Tutorial by Examples: reat

Create password hashes using password_hash() to use the current industry best-practice standard hash or key derivation. At time of writing, the standard is bcrypt, which means, that PASSWORD_DEFAULT contains the same value as PASSWORD_BCRYPT. $options = [ 'cost' => 12, ]; $hashedPasswor...

Spoilers are used to hide text or images that would otherwise negatively impact another user's experience. They can be created using >! >!This is hidden until your cursor hovers on top of it This is hidden until your cursor hovers on top of it Note: This is not part of standard markup...

Markdown tables are physically represented using dash - for to separate the header row from the content ones and pipe | for columns. ColumnColumnCellCell is produced by Column | Column ------ | ------ Cell | Cell You can also populate a table in any way you want - LetterDigitCharactera4...

Declare a new variable with var, followed by a name, type, and value: var num: Int = 10 Variables can have their values changed: num = 20 // num now equals 20 Unless they're defined with let: let num: Int = 10 // num cannot change Swift infers the type of variable, so you don't always ha...

Node provides the module.exports interface to expose functions and variables to other files. The most simple way to do so is to export only one object (function or variable), as shown in the first example. hello-world.js module.exports = function(subject) { console.log('Hello ' + subject); }...

When an exception object is created (i.e. when you new it), the Throwable constructor captures information about the context in which the exception was created. Later on, this information can be output in the form of a stacktrace, which can be used to help diagnose the problem that caused the excep...

To add an image to a page, use the image tag. Image tags (img) do not have closing tags. The two main attributes you give to the img tag are src, the image source and alt, which is alternative text describing the image. <img src="images/hello.png" alt="Hello World"> Yo...

Create a snapshot of a whole database: mysqldump [options] db_name > filename.sql Create a snapshot of multiple databases: mysqldump [options] --databases db_name1 db_name2 ... > filename.sql mysqldump [options] --all-databases > filename.sql Create a snapshot of one or more tables...

This uses the Dropbox Python SDK to create a shared link for a file and also supplies a requested visibility and expiration in the settings: import datetime import dropbox dbx = dropbox.Dropbox("<ACCESS_TOKEN>") expires = datetime.datetime.now() + datetime.timedelta(days=30...

To create a variable in Python, all you need to do is specify the variable name, and then assign a value to it. <variable name> = <value> Python uses = to assign values to variables. There's no need to declare a variable in advance (or to assign a data type to it), assigning a value ...

This example shows the usage of the ILGenerator by generating code that makes use of already existing and new created members as well as basic Exception handling. The following code emits a DynamicAssembly that contains an equivalent to this c# code: public static class UnixTimeHelper { priva...

Branching in Subversion is very simple. In the simplest form, creating a new branch requires you to run the command against the remote repository's URLs. For example, let's create a new branch out of the mainline trunk: svn copy https://svn.example.com/svn/MyRepo/MyProject/trunk https://svn.example...

When you interact with the remote central repository using your private local workspace -- the working copy -- you can use repository-relative URL instead of direct URL to URL copy to create a new branch: svn copy "^/MyProject/trunk" "^/MyProject/branches/MyNewBranch" -m "C...

#include <lua.h> #include <lauxlib.h> #include <lualib.h> int main(void) { 5.1 /* Start by creating a new VM state */ lua_State *L = luaL_newstate(); /* Load standard Lua libraries: */ luaL_openlibs(L); 5.1 /* For older version of Lua use lua_open ins...

A CLOS class is described by: a name a list of superclasses a list of slots further options like documentation Each slot has: a name an initialization form (optional) an initialization argument (optional) a type (optional) a documentation string (optional) accessor, reader and/or wr...

Creating an empty table is as simple as this: local empty_table = {} You can also create a table in the form of a simple array: local numeric_table = { "Eve", "Jim", "Peter" } -- numeric_table[1] is automatically "Eve", numeric_table[2] is "Ji...

A database snapshot is a read-only, static view of a SQL Server database (the source database). It is similar to backup, but it is available as any other database so client can query snapshot database. CREATE DATABASE MyDatabase_morning -- name of the snapshot ON ( NAME=MyDatabase_data, -- l...

To create a UIImageView programmatically, all you need to do is create an instance of UIImageView: //Swift let imageView = UIImageView() //Objective-C UIImageView *imageView = [[UIImageView alloc] init]; You can set the size and position of the UIImageView with a CGRect: //Swift imageView...

In C++, threads are created using the std::thread class. A thread is a separate flow of execution; it is analogous to having a helper perform one task while you simultaneously perform another. When all the code in the thread is executed, it terminates. When creating a thread, you need to pass somet...

Apple's Reachability class periodically checks the network status and alerts observers to changes. Reachability *internetReachability = [Reachability reachabilityForInternetConnection]; [internetReachability startNotifier];