Tutorial by Examples: e

An easing causes some variable to change unevenly over a duration. "variable" must be able to be expressed as a number, and can represent a remarkable variety of things: an X-coordinate, a rectangle's width, an angle of rotation, the red component of an R,G,B color. anything that c...

Introduces a case label of a switch statement. The operand must be a constant expression and match the switch condition in type. When the switch statement is executed, it will jump to the case label with operand equal to the condition, if any. char c = getchar(); bool confirmed; switch (c) { c...

Arrays are zero-based, that is the index always starts at 0 and ends with index array length minus 1. Thus the following code will not output the first element of the array and will output garbage for the final value that it prints. #include <stdio.h> int main(void) { int x = 0; ...

Less doesn't put any restrictions on the number of times the parent selector (&) can be used in a complex selector and so, we can use it more than once like in the below examples to select sibling elements without the need to repeat the selector. .demo { border: 1px solid black; /* add borde...

The following snippet replaces all Attributes called PreviousAttribute by an Attribute called ReplacementAttribute for an entire solution. The sample manually searches the Syntax tree and replaces all affected nodes. static async Task<bool> ModifySolution(string solutionPath) { ...

The following snippet replaces all Attributes called "PreviousAttribute" by an Attribute called "ReplacementAttribute" for an entire solution. The sample manually uses a SyntaxRewriter to exchange the attributes. /// <summary> /// The CSharpSyntaxRewriter allows to rewrit...

C11 The function specifier _Noreturn was introduced in C11. The header <stdnoreturn.h> provides a macro noreturn which expands to _Noreturn. So using _Noreturn or noreturn from <stdnoreturn.h> is fine and equivalent. A function that's declared with _Noreturn (or noreturn) is not allowe...

Sometimes a poorly designed 3rd-party library will write unwanted diagnostics to System.out or System.err streams. The recommended solutions to this would be to either find a better library or (in the case of open source) fix the problem and contribute a patch to the developers. If the above solu...

Function calls as f(a) always imply a sequence point between the evaluation of the arguments and the designator (here f and a) and the actual call. If two such calls are unsequenced, the two function calls are indeterminately sequenced, that is, one is executed before the other, and order is unspeci...

Detailed instructions on getting vsto set up or installed.

Most PRAGMA statements affect only the current database connection, which means that they have to be re-applied whenever the database has been opened. However, the following PRAGMAs write to the database file, and can be executed at any time (but in some cases, not inside a transaction): applica...

An XSLT processor is necessary in order to perform any XSLT transformation. It can usually be installed via system's package manager. E.g. in Debian it can be installed with: sudo apt-get install xsltproc

Jumps to the end of the smallest enclosing loop. int sum = 0; for (int i = 0; i < N; i++) { int x; std::cin >> x; if (x < 0) continue; sum += x; // equivalent to: if (x >= 0) sum += x; }

C++11 Yields the type of its operand, which is not evaluated. If the operand e is a name without any additional parentheses, then decltype(e) is the declared type of e. int x = 42; std::vector<decltype(x)> v(100, x); // v is a vector<int> If the operand e is a class member...

In a switch statement, introduces a label that will be jumped to if the condition's value is not equal to any of the case labels' values. char c = getchar(); bool confirmed; switch (c) { case 'y': confirmed = true; break; case 'n': confirmed = false; break; default: ...

A named style requires the x:Key property to be set and applies only to elements that explicitly reference it by name: <StackPanel> <StackPanel.Resources> <Style x:Key="MyTextBlockStyle" TargetType="TextBlock"> <Setter Property=&qu...

An implicit style applies to all elements of a given type within scope. An implicit style can omit x:Key since it is implicitly the same as the style's TargetType property. <StackPanel> <StackPanel.Resources> <Style TargetType="TextBlock"> <...

It is common to need a base style that defines properties/values shared between multiple styles belonging to the same control, especially for something like TextBlock. This is accomplished by using the BasedOn property. Values are inherited and then can be overridden. <Style x:Key="BaseText...

A PDF document may contain the following standard types of signatures: Any number of approval signatures in signature form fields. At most one certification signature in a signature form field. It enables the author to specify what changes shall be permitted to be made to the document and what c...

In the Adobe technical white paper Adobe Acrobat 9 Digital Signatures, Changes and Improvements, especially its section "Allowed and disallowed changes", Adobe clarifies the allowed changes (as seen by Acrobat 9 and up) that can be made to a certified or signed document without invalidatin...