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Frameworks for the go language: Frameworks are essential for the developer in the development of software. You can make simple, reliable, and efficient software by using the frameworks in the go language. The frameworks reduce the code typing for the developer in the go program without losing its performance. Thus, the deployment time of the software reduces when the developer uses the frameworks.

There are a lot of frameworks available for the go language; a few of them are given below:

Revel framework:

The Revel is one of the most usable frameworks by the developer in the go language. The Revel is a web framework that provides higher productivity for the go language. In comparing other frameworks, the developer can easily deploy his software by using the Revel framework. There are various useful features available in it, which make it more important for the developer.

Features of Revel framework:

There are a lot of features available in the revel framework. A few of them are given below:
Hot Code Reload:
The Revel provides a Hot Code Reload feature. It is an amazing feature of the Revel framework that has been provided to the developer. It provides the edit, saves, and refreshes mode for the convenience of the developer. The developer can edit the code and save it very easily. He can refresh it every time and see the change after each modification made in the source code. Revel framework also provides you the compilation feature, so you can easily compile the source code.
Comprehensive:
The revel framework has too many features. It is very comprehensive. The developer can also do the validation and parameter parsing in the go program. It also allows the developer to do the templating, caching, job running, and testing a framework. The developer can also do the Internationalization with your project very easily by using this framework.
Flow Control:
Flow control is an important feature of the Revel framework. It provides flow control in the go program. Revel framework is built around middleware that can be composed, are also known as filters. These filters are implemented near all request processing functions in the program. It provides the developer's freedom to replace the default filters with those filters that are custom in feature as per the user's requirement.
Migration friendly:
The revel framework is migration friendly. If an application is started, then don't be so sad; it is very easy to migrate to the revel framework. The developer can easily migrate to revel, just bypassing the path. Provide that mux path that you want to handle with the revel mux. Then the entire request for that path will pass through your HTTP muxer. This HTTP muxer is the same one that you created for your mux.
Reusable MVC Components:
It is one of the most important features of the revel framework. In the revel frameworks, the MVC components are reusable. The revel framework allows the developer to reuse the MVC components in the software development by using go language. The Revel has modules in its library. These modules are known as the reusable MVC components; you can use these modules at any place all over the project. These modules can be used multiple times. It makes frees the developer from copy and pastes operation. They don't need to copy the code and paste it into another place. Instead of this copy and paste, he can use the MVC components. The MVC stands for Model View Controller.
Go mod Ready:
Go mod is a tool of the go language which has built-in management dependency. The Revel framework allows the developer to create the Go mod tool to develop a project. This tool is a dependent tool related to built-in management.
Stateless:
It is also an important feature of the revel framework. The revel framework gives the primitive, which stores the web tier stateless position. It is specially used for predictable scaling in the development of a project.

So, these are the features that provide flexibility and extendibility in the revel framework. These features make this framework more useful and popular among all remaining frameworks of the go language.,

Beego framework:

When you create a web application, then a web application framework requires for you. These frameworks make it easy to develop software. The framework speeds up the process of development and makes frees the developer from writing large complex code. The framework helps a lot to the developer in the development process and helps in its quick deployment.

Beego is another framework that is most widely used in the world of web development. It is also one of the most liked frameworks that are used by the go developers. Beego has amazing features that support the developer in the development of a project.

Beego framework is a full-fledged MVC (model view controller) framework, and it has its library, ORM, and Web framework. The developer does not need to use third-party libraries.

Features of Beego framework:

Beego is one of the most popular frameworks only because of its useful and amazing features. There are many features available in Beego, which make it unique and the developer's first choice. Here, some main features of the Beego framework are given below:
Easy to use:
Beego framework is very easy to use. With the help of restful APIs, it makes easy to developer to work on Beego framework. It also supports the MVC model for the development of software. There are also some tools available in its library, which makes it easier to use this framework. These tools are known as bee tools. So, the restful APIs, its MVC model, and the bee tools make the framework easy to use and quickly deploy software.
Intelligent:
The routing and the monitoring feature provide the intelligence to the Beego framework. This framework can monitor the QPS memory and the usages of the CPU in the development process. It also checks the status of the goroutines. The Beego framework gives full authority to the developer to take full control of his online apps.
Modular:
The Beego framework has some useful built-in modules, which provide a solid foundation for any application type. These tools are session control, caching logging, configuration parsing, performance supervising, context handling, ORM supporting, and request simulating. These tools are very powerful and help the developer in the development process.
High Performance:
The Beego framework provides high performance in the development of a project. It handles the request with the help of the native go HTTP package. It is also able to get the efficient concurrency of the goroutines in the go program. Deployed products (software) from the Beego framework can handle the massive traffic as Beego is doing the same in many other productions.

Some more features are also which are useful in the development of a project. These features are:

1. Hot code Compile: The Beego framework has a hot code compilation, the same as the Revel framework. It provides the edit, saves, and compile mode for better convenience to the developer. He can compile these codes every time and check the errors after each modification made in the source code.

2. Automated Testing: Beego framework provides automated testing in the go program. The developers do not require extra effort in testing; it automatically does the developer's testing.

3. Auto packing and Deploying: Beego framework also provides the auto packing and deploying feature in developing a project.

4. The Beego framework provides a strong foundation for applications.

Martini framework:

It is another useful framework used for the go language. Martini framework is a very light framework, and Sinatra inspires it. Even it is an extremely light framework, but it is also very powerful in functionality. It was mainly designed for writing modular web applications and their services in the go language. Martini framework helps developers in quickly writing modular web applications or services in the go language.

The martini framework was developed especially for the go developers. There are many features available in this framework, which helps the go developers in the development of an application. Few features of this framework are given below:

1. The martini framework is extremely simple to use.

2. It has a non-intrusive design.

3. Martini framework plays very nice with the packages of the go languages.

4. It provides an awesome path matching in the development process.

5. It also provides efficient routing in the go applications.

6. The martini framework provides a modular design in the development process.

7. There are a lot of handlers and middleware are available, which can be used by the developer.

8. It is fully compatible with the HTTP handler function interface.

Note: Its developer no longer maintains the Martini framework means it is not getting any update at the current time; also, there is no enhancement in its feature.
Buffalo framework:

It is also an important framework for the go developers for building a new web application in the go language. Buffalo framework is a very simple framework, and it provides the fastest speed in the deployment of a project. Web applications can be developed very quickly with the help of this framework.

Whenever the developer starts a new project in the Buffalo framework, it provides a proper set-up to the developer. It provides a complete set to the developer from the front end to the back end in developing a project (web application).

Features of the Buffalo framework:

There are many features available in the Buffalo framework, which helps the developer in the development process. Some features of this framework are given below:

1. Easy to get started

2. Hot Reloading

3. Docker compatibility

4. Development productivity

Easy to get started with:
It is very easy to get started with the Buffalo framework for the development of a web application. The developer does not need to write heavy codes for the development of a project. Buffalo framework permits the developer to develop an app as quickly as possible. It gives full set-up to the developer for the development when he starts to build a new application.
Hot Reloading:
The buffalo framework provides a hot reloading feature for the developer, which performs auto-refresh after every modification in the program's source code. Dev Ops command will always keep an eye on you. go and .html files. Whenever you edit and modify these files, this framework will automatically rebuild and starts your binary for you by using this feature. You just need to run the Dev command to see the changes that you made in your program. Hot reloading is one of the most important features of the buffalo framework.
Docker Compatibility:
A docker is a container, which is used in the development and deployment of a project. The Buffalo framework is fully compatible with the docker container. It supports Docker and allows the developer to deploy the application very easily. The developer needs to write very few lines of code for deployment in the docker container. The compatibility allows the developer to develop the best quality app and the best production-grade in the Buffalo framework with Docker's beauty.
Development Productivity:
It is the key feature of the Buffalo framework. The building of an application with the buffalo framework is very easy. It provides the fastest production speed in comparison to a lot of other frameworks. It allows the developer to develop an application without any problem. It supports the developer from starting to end in the development process.

Goji framework:

Goji is another framework that is used to develop an application by using the go language. It is a very light weighted and fast framework. The main priority of the Goji framework is to provide composability and simplicity. This framework is a minimalistic HTTP request multiplexer nearly the same as net/http.ServeMux. The main function of this framework is to compare the incoming request with a list of registered patterns. After the comparison, it dispatches the result to that handler, which corresponds to the first matching pattern.

The Goji framework has Einhorn support. It provides web socket support to the developer in the development process; this support is only possible because it has Einhorn support. This framework has a wide range of functionality, and you can also use this framework in the production of software. It has served billions of requests for production from different organizations across the world.

Features of the Goji framework:

There are many useful features available, which will help the developer during the development process. Some features from them are given below:

1. The Goji framework is very simple and very easy to learn for new developers.

2. It provides the URL patterns to the developer in the project development.

3. It provides a middleware stack in the project development, and these middleware stacks are also re-configurable.

4. This framework uses the standard context to store the request scope values.

5. It provides a very graceful shutdown to the project.

6. The Goji framework has a large production rate.

Tiger Tonic framework:

Tiger Tonic is another framework available for the go language. The Drop wizard inspires this framework, and it is specially designed to develop JSON web services. It can also build high-performance REST APIs based on the principles of go language. It follows the Go language rules while developing the project and tries to keep its features orthogonal.

The drawback of the tiger tonic framework is its insufficiency. It is not fully sufficient to develop large size projects and back-end applications.

Gocraft framework:

Gocraft is another powerful framework available for developers in the go language. This framework provides scalability in the development of the project. This framework has a very fast routing process; it merges routing to the net or PHP packages in the standard library's development process.

Gocraft mainly acts as a Go mux and middleware package. It provides the casting and reflection strength to the developer in the project development and makes him capable of typing the source code statically.

The Gocraft framework also provides the facility to the developer to add the optional functions. He can do it with the help of built-in middleware. The developer can also add his written function.

The developer's always a main concern with the performance. This framework provides great performance in the development process, so this framework will always be the first choice for the developers in case of speed and performance. Writing the back-end codes in the development process is very easy in this framework.

Features of the Go craft framework:

There are a lot of amazing features available in it. These features will be very supportive to the developer and make it easy to write the codes when he uses the Gocraft framework to develop a project. Some useful features of the Gocraft frameworks are given below:

1. Super-fast and scalable: This one is the main feature of the Gocraft framework. It provides a super-fast development process and gives scalability to the program. Its routing performance is 0(log(N)), where N is the total number of routes.

2. Create your context: The Gocraft framework allows the developer to create his context in this framework. The developer can establish secure communication between the middleware and the handler with powerful static typing. If it will not find the handler, then it returns the 404-error message on the screen.

3. Middleware: Gocraft framework also has some built-in middleware, which provides additional functionality to the developer in the development process.

4. Easy and powerful routing: Routing is very easy in this framework. The developer can validate the path segments with the help of regular expressions.

5. Minimal: The Gocraft framework is minimal and light-weighted.

6. Nested routers, contexts, and middleware: The Gocraft framework provides the facility of nested routers, context, and middleware to develop an application.

These are the Go language frameworks, making it easy for the developer in the development process.

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Frameworks for go language - Tutorial And Example

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Frameworks for the go language: Frameworks are essential for the developer in the development of software. You can make simple, reliable, and efficient software by using the frameworks in the go language. The frameworks reduce the code typing for the developer in the go program without losing its performance.

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Maps in C++ are the containers associated with key and mapped values. By keys and mapped values, we mean that the maps are used to store elements formed by the combination of the keys and mapped values. In other words, maps are functions found in the Standard Template Library (STL) that store key-value pairs that are unique.

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In some cases, when we want an operation to continuously repeat again and again repetitively instead of musing commands multiple times, we can use Looping and Iteration.

For example, it becomes easy for a user to display hello word 100 times using a single perform operator instead of using display 100 times with these commands.
PERFORM COMMAND
SYNTAX =>

1)

2}

3}

4}

5}

6}
SAMPLE PROGRAM -
THIS IS A DEMO PROGRAM TO LEARN AND UNDERSTAND THE CONCEPT OF PERFORM CONDITIONAL OPERATOR AND HOW DIFFERENT TYPES OF PERFORM OPERATORS CAN BE USED TO LOOP.
THE OUTPUT WILL BE

Here in this program, we have assigned few variables with different values and later by manipulating the output using different perform conditions to clarify the different concepts related to INLINE LOOPS and how numerous ways a simple PERFORM can be used.

--------------------------
THE OUTPUT WILL BE

Here in this program, we have assigned few variables with different values and later by manipulating the output using different PERFORM conditions to clarify the different concepts related to OUTLINE LOOPS and how numerous ways a simple PERFORM can be used.
THE OUTPUT WILL BE

Here in this program, we have assigned few variables with different values and later by manipulating the output using different PERFORM conditions to clarify the different concepts related to multiple LOOPS and how numerous ways a simple PERFORM can be used.

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COBOL Iteration and Looping - Tutorial And Example

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In some cases, when we want an operation to continuously repeat again and again repetitively instead of musing commands multiple times, we can use Looping and Iteration. For example, it becomes easy for a user to display hello word 100 times using a single perform operator instead of using display 100 times with these commands.

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DAA: KMP Algorithm - Tutorial And Example

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DAA: KMP Algorithm with tutorial and examples on HTML, CSS, JavaScript, XHTML, Java, .Net, PHP, C, C++, Python, JSP, Spring, Bootstrap, jQuery, Interview Questions etc.

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The "case" or "switch" statement is available in various languages. The following is the syntax for the case statement:

Translation of Switch Statement

The translation scheme for the above code is shown below:
Code to evaluate E into T

When we see the switch keyword, two labels test and next and a temporary variable t are generated.

When we see the case keyword, a new label Li is created and entered into the symbol table. It is used to store the value Vi of the constant Li, or a pointer to the symbol table entry for Li is placed in the queue.

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Switch Case Statement Compiler Design - Tutorial And Example

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The "case" or "switch" statement is available in various languages. The following is the syntax for the case statement: The translation scheme for the above code is shown below: Code to evaluate E into T When we see the switch keyword, two labels test and next and a temporary variable t are generated.

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Optimization of Basic Blocks in Compiler Design

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Optimization of Basic Blocks in Compiler Design

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We can apply the optimization process on a basic block. While optimization, there is no need to change the set of expressions computed by the block.

The basic block optimization can be done in two ways:

Structure-Preserving Transformations

Algebraic Transformations

Structure-Preserving Transformations
The primary Structure-Preserving Transformation on basic blocks are as follows:

Common sub-expression elimination

Dead code elimination

Renaming of temporary variables

Interchange of two adjacent independent statements.

Common sub-expression elimination:
Suppose we have two expressions that compute the same values. In that case, we need to eliminate one of the expressions. This method is known as the common sub-expression elimination method.

This example shows that the second and fourth statements compute the same expression: c - d. So the basic block can be transformed as follows:
Dead code elimination:
Whenever a programmer writes a program, there is a possibility that the program may have some dead code. These dead codes are the result of some expression in the program. Generally, a programmer doesn't introduce dead code intentionally. The dead code may be a variable or the result of some expression computed by the programmer that may not have any further uses. By eliminating these useless things from a code, the code will get optimized.

A statement p = q + r appears in a block, and p is a dead symbol. It means that it will never be used subsequently so that we can eliminate this statement. This elimination does not have any impact on the values of the basic block.
Renaming of temporary variables:
Consider the statement x = a + b

The given statement's value is stored in the temporary variable x that can be changed to another temporary variable y and changes all uses of x to y.

This kind of transformation is also known as a normal-form block.
Interchange of two independent adjacent statements:
Suppose we have two statements as follows:

The given statement can be interchanged without affecting the value of the block when the value of p does not affect the value of q.
Algebraic Transformations:
We can also optimized the basic blocks using algebraic identities. For example, we may apply arithmetic identities, such as

Local reduction in strength is also another kind of algebraic transformation. In this optimization, a more expensive operator is replaced by a cheaper one.

EXPENSIVE CHEAPER

x^2 x * x

2 * x x + x

x/2 x * 0.5

The third class of optimizations is constant folding. In constant folding, the value of the constant expression is evaluated at compile-time, and their values replace constant expression. So, the expression 3 * 3 will be replaced by 9.

Sometimes unexpected common subexpression arose due to some relational operators like <, >, and =.

The relational operators such as < and = sometimes generate unexpected common subexpressions.

Sometimes associative rule may be applied to expose common sub expression. If the source code has the assignments:

a = b + c;

e = c + d+ b;

Then, the intermediate code may be generated as the following:

a = b + c

t = c + d

e = t + b

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Optimization of Basic Blocks in Compiler Design - Tutorial And Example

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We can apply the optimization process on a basic block. While optimization, there is no need to change the set of expressions computed by the block. The basic block optimization can be done in two ways: Structure-Preserving Transformations Algebraic Transformations Structure-Preserving Transformations The primary Structure-Preserving Transformation on basic blocks are as follows: Common sub-expression elimination Dead code elimination Renaming of temporary variables Interchange of two adjacent independent statements.

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The translation of conditional statements such as if-else statements and while-do statements is associated with Boolean expression's translation. The main use of the Boolean expression is the following:

Boolean expressions are used as conditional expressions in statements that alter the flow of control.

A Boolean expression can compute logical values, true or false.

Boolean expression is composed of Boolean operators like &&, ||, !, etc. applied to the elements that are Boolean or relational expressions. E1 rel E2 is the form of relational expressions.

Let us consider the following grammars:

B => B1 | | B2

B => B1 && B2 |

B => !B1

B => (B)

B => E1 rel E2

B => true

B => false

If we compute that B1 is true in the first expression, then the entire expression will be true. We don't need to compute B2. In the second expression, if B1 is false, then the entire expression is false.

The comparison operators <, <=, =, !=, >, or => is represented by rel.op.

We also assume that || and && are left-associative. || has the lowest precedence and then &&, and !.

B => B1 | | B2

B1.true = B.true B1.false = newlabel () B2.true = B.true B2.false = B.false B.code = B1.code || label(B1.false) || B2.code

B => B1 && B2

B1.true = newlabel () B1.false = B.false B2.true = B.true B2.false = B.false B.code = B1.code | | label( B1.true) | | B2.code

B => !B1

B1.true = B.false B1.false = B.true B.code = B1.code

B => E1 rel E2

B.code = E1.code | | E2.code | | gen('if' E1.addr rel.op E2.addr 'goto' B.true) | | gen('goto' B.false)

B => true

B.code = gen('goto' B.true )

B => false

B.code = gen('goto' B.false )

The below example can generate the three address code using the above translation scheme:

if ( x < 100 || x > 200 && x ! = y ) x = 0;

if x < 100 goto L2

goto L3

L3: if x > 200 goto L4

goto L1

L4: if x != y goto L 2

goto L1

L2: x = 0

L1:

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Boolean Expression in Compiler Design - Tutorial And Example

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The translation of conditional statements such as if-else statements and while-do statements is associated with Boolean expression's translation. The main use of the Boolean expression is the following: Boolean expressions are used as conditional expressions in statements that alter the flow of control. A Boolean expression can compute logical values, true or false.