Tutorial by Examples: b

The public keyword makes a class (including nested classes), property, method or field available to every consumer: public class Foo() { public string SomeProperty { get; set; } public class Baz { public int Value { get; set; } } } public class Bar() { publ...

There is already a function sum(). As a result, if we name a variable with the same name sum = 1+3; and if we try to use the function while the variable still exists in the workspace A = rand(2); sum(A,1) we will get the cryptic error: Subscript indices must either be real positive integer...

Download and install Visual Studio. Visual Studio can be downloaded from VisualStudio.com. The Community edition is suggested, first because it is free, and second because it involves all the general features and can be extended further. Open Visual Studio. Welcome. Go to File → New ...

Consider following DOM Structure <ul class="parentUl"> <li> Level 1 <ul class="childUl"> <li>Level 1-1 <span> Item - 1 </span></li> <li>Level 1-1 <span> Item - 2 </span></li&gt...

for is the only loop statement in go, so a basic loop implementation could look like this: // like if, for doesn't use parens either. // variables declared in for and if are local to their scope. for x := 0; x < 3; x++ { // ++ is a statement. fmt.Println("iteration", x) } //...

Breaking out of the loop and continuing to the next iteration is also supported in Go, like in many other languages: for x := 0; x < 10; x++ { // loop through 0 to 9 if x < 3 { // skips all the numbers before 3 continue } if x > 5 { // breaks out of the loop once x...

To delete a branch on the origin remote repository, you can use for Git version 1.5.0 and newer git push origin :<branchName> and as of Git version 1.7.0, you can delete a remote branch using git push origin --delete <branchName> To delete a local remote-tracking branch: git bra...

To find a match, the regex engine will consume characters one by one. When a partial match begins, the engine will remember the start position so it can go back in case the following characters don't complete the match. If the match is complete, the is no backtracking If the match isn't complete...

Backtracking can be caused by optional quantifiers or alternation constructs, because the regex engine will try to explore every path. If you run the regex a+b against aaaaaaaaaaaaaa there is no match and the engine will find it pretty fast. But if you change the regex to (aa*)+b the number of comb...

A flags-style enum value needs to be tested with bitwise logic because it may not match any single value. [Flags] enum FlagsEnum { Option1 = 1, Option2 = 2, Option3 = 4, Option2And3 = Option2 | Option3; Default = Option1 | Option3, } The Default value is actually a ...

XML is made of basic building blocks, which are: element text attributes comments processing instructions An element has angle brackets: <element/> <element>some content</element> An attribute appears in an opening element tag: <element attribute-name="...

docker run --restart=always -d <container> By default, Docker will not restart containers when the Docker daemon restarts, for example after a host system reboot. Docker provides a restart policy for your containers by supplying the --restart command line option. Supplying --restart=always ...

Const ForReading = 1 Const ForWriting = 2 Const ForAppending = 8 Sub FsoExample() Dim fso As Object ' declare variable Set fso = CreateObject("Scripting.FileSystemObject") ' Set it to be a File System Object ' now use it to check if a file exists Dim myFilePath A...

Const ForReading = 1 Const ForWriting = 2 Const ForAppending = 8 Sub ReadTextFileExample() Dim fso As Object Set fso = CreateObject("Scripting.FileSystemObject") Dim sourceFile As Object Dim myFilePath As String Dim myFileText As String myFilePath = &...

Sub CreateTextFileExample() Dim fso As Object Set fso = CreateObject("Scripting.FileSystemObject") Dim targetFile As Object Dim myFilePath As String Dim myFileText As String myFilePath = "C:\mypath\to\myfile.txt" Set targetFile = fso.CreateT...

Const ForReading = 1 Const ForWriting = 2 Const ForAppending = 8 Sub WriteTextFileExample() Dim oFso Set oFso = CreateObject("Scripting.FileSystemObject") Dim oFile as Object Dim myFilePath as String Dim myFileText as String myFilePath = "C:\my...

traverse_ executes an Applicative action for every element in a Foldable structure. It ignores the action's result, keeping only the side-effects. (For a version which doesn't discard results, use Traversable.) -- using the Writer applicative functor (and the Sum monoid) ghci> runWriter $ trave...

A new thread separate from the main thread's execution, can be created using Thread.new. thr = Thread.new { sleep 1 # 1 second sleep of sub thread puts "Whats the big deal" } This will automatically start the execution of the new thread. To freeze execution of the main Thread, ...

Any type can be declared as an array using either the dimension attribute or by just indicating directly the dimension(s) of the array: ! One dimensional array with 4 elements integer, dimension(4) :: foo ! Two dimensional array with 4 rows and 2 columns real, dimension(4, 2) :: bar ! Three...

fn main() { // Statically allocated string slice let hello = "Hello world"; // This is equivalent to the previous one let hello_again: &'static str = "Hello world"; // An empty String let mut string = String::new(); // An empty String ...