Tutorial by Examples: s

.gitignore ignores files locally, but it is intended to be committed to the repository and shared with other contributors and users. You can set a global .gitignore, but then all your repositories would share those settings. If you want to ignore certain files in a repository locally and not make t...

In Elixir, a common practice is to use anonymous functions. Creating an anonymous function is simple: iex(1)> my_func = fn x -> x * 2 end #Function<6.52032458/1 in :erl_eval.expr/5> The general syntax is: fn args -> output end For readability, you may put parenthesis around t...

create table empl ( name text primary key, boss text null references name on update cascade on delete cascade default null ); insert into empl values ('Paul',null); insert into empl values ('Luke','Paul'); insert into empl values ('Kate'...

Public Module Usage Public Sub LikeThis() Dim iCount As Integer Dim sCount As String iCount = 245 sCount = iCount.PadLeft(4, "0") Console.WriteLine(sCount) Console.ReadKey() End Sub End Module Public Module Padding <Extension> Pub...

A metatable defines a set of operations which alter the behaviour of a lua object. A metatable is just an ordinary table, which is used in a special way. local meta = { } -- create a table for use as metatable -- a metatable can change the behaviour of many things -- here we modify the 'tostrin...

Some metamethods don't have to be functions. To most important example for this is the __index metamethod. It can also be a table, which is then used as lookup. This is quite commonly used in the creation of classes in lua. Here, a table (often the metatable itself) is used to hold all the operation...

There are many more metamethods, some of them are arithmetic (e.g. addition, subtraction, multiplication), there are bitwise operations (and, or, xor, shift), comparison (<, >) and also basic type operations like == and # (equality and length). Lets build a class which supports many of these o...

There is a metamethod called __call, which defines the bevahiour of the object upon being used as a function, e.g. object(). This can be used to create function objects: -- create the metatable with a __call metamethod local meta = { __call = function(self) self.i = self.i + 1 e...

Perhaps the most important use of metatables is the possibility to change the indexing of tables. For this, there are two actions to consider: reading the content and writing the content of the table. Note that both actions are only triggered if the corresponding key is not present in the table. Re...

Sometimes, you don't want to trigger metamethods, but really write or read exactly the given key, without some clever functions wrapped around the access. For this, lua provides you with raw table access methods: -- first, set up a metatable that allows no read/write access local meta = { __i...

To create a background session // Swift: let mySessionID = "com.example.bgSession" let bgSessionConfig = NSURLSessionConfiguration.backgroundSessionConfigurationWithIdentifier(mySessionID) let session = NSURLSession(configuration: bgSessionConfig) // add tasks here //...

In C# 5.0 and earlier the developer could only suppress warnings by number. With the introduction of Roslyn Analyzers, C# needs a way to disable warnings issued from specific libraries. With C# 6.0 the pragma directive can suppress warnings by name. Before: #pragma warning disable 0501 C# 6.0: ...

Ionic Framework A Cross-platform mobile application development framework using Angular JS and Front End web technologies. Official website: http://ionicframework.com/ Documentation: http://ionicframework.com/docs/ Installation and Setup Installation Ionic required NPM(Node Package Manager) an...

import std.stdio; void main() { int[] arr = [1, 2, 3]; // concatenate arr ~= 4; writeln(arr); // [1, 2, 3, 4] // per element operations arr[] += 10 writeln(arr); // [11, 12, 13, 14] }

import std.stdio; void main() { int[] arr = [1, 2, 3, 4, 5]; auto arr2 = arr[1..$ - 1]; // .. is the slice syntax, $ represents the length of the array writeln(arr2); // [2, 3, 4] arr2[0] = 42; writeln(arr[1]); // 42 }

You can create a new branch and switch to it using git checkout -b AP-57 After you use git checkout to create a new branch, you will need to set that upstream origin to push to using git push --set-upstream origin AP-57 After that, you can use git push while you are on that branch.

import std.format; void main() { string s = "Name Surname 18"; string name, surname; int age; formattedRead(s, "%s %s %s", &name, &surname, &age); // %s selects a format based on the corresponding argument's type } Official documentatio...

To get template item by template Id. TemplateItem templateItem = Sitecore.Context.Database.GetTemplate(new ID("{11111111-1111-1111-1111-111111111111}"));

Input the name of the template to get the template by using GetTemplate Method. TemplateItem templateItem = Sitecore.Context.Database.GetTemplate("NameOfTheTemplate");

While you can create LaTeX documents using any editor and compiling using the console, there exist several plugins for widely used editors to simplify creating LaTeX documents, and there are specialized LaTeX editors. An exhaustive list of LaTeX editors is available on TeX.SE (the StackExchange site...