Tutorial by Examples: s

This message is sent to your window procedure when a window is being destroyed. It is sent after the window is removed from the screen. Most applications free any resources, like memory or handles, obtained in WM_CREATE. If you handle this message, return 0. LRESULT CALLBACK winproc(HWND hwnd, UINT...

Sent when an application's close button is clicked. Do not confuse this with WM_DESTROY which is sent when a window will be destroyed. The main difference lies in the fact that closing may be canceled in WM_CLOSE (think of Microsoft Word asking to save your changes), versus that destroying is when t...

This message is sent to the window's window procedure after it's size has changed. The most common reason for handling this message is to adjust the position of any child windows. For example, in Notepad, when the window is resized the child window (edit control) is also resized. Return 0 if you han...

SQL Server 2012 You can utilize the new function: FORMAT(). Using this you can transform your DATETIME fields to your own custom VARCHAR format. Example DECLARE @Date DATETIME = '2016-09-05 00:01:02.333' SELECT FORMAT(@Date, N'dddd, MMMM dd, yyyy hh:mm:ss tt') Monday, September 05, 2016 ...

When you have an input with well defined boundaries and are expecting more than one match in your string, you have two options: Using lazy quantifiers; Using a negated character class. Consider the following: You have a simple templating engine, you want to replace substrings like $[foo] whe...

In comparison to regular classes – case classes notation provides several benefits: All constructor arguments are public and can be accessed on initialized objects (normally this is not the case, as demonstrated here): case class Dog1(age: Int) val x = Dog1(18) println(x.age) // 18 (success!...

[^0-9a-zA-Z] This will match all characters that are neither numbers nor letters (alphanumerical characters). If the underscore character _ is also to be negated, the expression can be shortened to: [^\w] Or: \W In the following sentences: Hi, what's up? I can't wait for 2017!...

[^0-9] This will match all characters that are not ASCII digits. If Unicode digits are also to be negated, the following expression can be used, depending on your flavor/language settings: [^\d] This can be shortened to: \D You may need to enable Unicode character properties support expl...

To get version 5394 use: svn co --revision r5394 https://svn.example.com/svn/MyRepo/MyProject/trunk Or the shorter version: svn co -r 5394 https://svn.example.com/svn/MyRepo/MyProject/trunk Or by using pegged revisions: svn co https://svn.example.com/svn/MyRepo/MyProject/trunk@5394 If al...

Dynamic scoping means that variable lookups occur in the scope where a function is called, not where it is defined. $ x=3 $ func1 () { echo "in func1: $x"; } $ func2 () { local x=9; func1; } $ func2 in func1: 9 $ func1 in func1: 3 In a lexically scoped language, func1 would alway...

If you have an instance of a generic type but for some reason don't know the specific type, you might want to determine the generic arguments that were used to create this instance. Let's say someone created an instance of List<T> like that and passes it to a method: var myList = new List&lt...

SequenceEqual is used to compare two IEnumerable<T> sequences with each other. int[] a = new int[] {1, 2, 3}; int[] b = new int[] {1, 2, 3}; int[] c = new int[] {1, 3, 2}; bool returnsTrue = a.SequenceEqual(b); bool returnsFalse = a.SequenceEqual(c);

Suppose we want to receive a function as a parameter, we can do it like this: function foo(otherFunc: Function): void { ... } If we want to receive a constructor as a parameter: function foo(constructorFunc: { new() }) { new constructorFunc(); } function foo(constructorWithParams...

The current version of JQuery Mobile is 1.4.5 and can be downloaded here: https://jquerymobile.com/ Download the zip file and extract all files. Create a library (or lib) folder inside of your application (inside the www folder). Create a jquery-mobile folder inside the lib folder (I've named ...

local Class = {} -- objects and classes will be tables local __meta = {__index = Class} -- ^ if an instance doesn't have a field, try indexing the class function Class.new() -- return setmetatable({}, __meta) -- this is shorter and equivalent to: local new_instance = {} setmetatabl...

bsort :: Ord a => [a] -> [a] bsort s = case bsort' s of t | t == s -> t | otherwise -> bsort t where bsort' (x:x2:xs) | x > x2 = x2:(bsort' (x:xs)) | otherwise = x:(bsort' (x2:xs)) bsort' s = s

The type constructor for lists in the Haskell Prelude is []. The type declaration for a list holding values of type Int is written as follows: xs :: [Int] -- or equivalently, but less conveniently, xs :: [] Int Lists in Haskell are homogeneous sequences, which is to say that all elements mus...

To process lists, we can simply pattern match on the constructors of the list type: listSum :: [Int] -> Int listSum [] = 0 listSum (x:xs) = x + listSum xs We can match more values by specifying a more elaborate pattern: sumTwoPer :: [Int] -> Int sumTwoPer [] = 0 sumTwoPer (x1...

pip doesn't current contain a flag to allow a user to update all outdated packages in one shot. However, this can be accomplished by piping commands together in a Linux environment: pip list --outdated --local | grep -v '^\-e' | cut -d = -f 1 | xargs -n1 pip install -U This command takes all pa...

pip doesn't current contain a flag to allow a user to update all outdated packages in one shot. However, this can be accomplished by piping commands together in a Windows environment: for /F "delims= " %i in ('pip list --outdated --local') do pip install -U %i This command takes all pa...