Tutorial by Examples: ed

If you have a greedy match as the first quantifier, the whole RE will be greedy, If you have non-greedy match as the first quantifier, the whole RE will be non-greedy. set mydata { Device widget1: port: 156 alias: input2 Device widget2: alias: input1 Device widget3: port: 238 alias...

A bit field is a variable that holds various boolean states as individual bits. A bit on would represent true, and off would be false. In the past bit fields were routinely used as they saved memory and reduced processing load. Though the need to use bit field is no longer so important they do offer...

RenderScript is a framework to allow high performance parallel computation on Android. Scripts you write will be executed across all available processors (e.g. CPU, GPU etc) in parallel allowing you to focus on the task you want to achieve instead of how it is scheduled and executed. Scripts are wr...

First, add Fresco to your build.gradle as shown in the Remarks section: If you need additional features, like animated GIF or WebP support, you have to add the corresponding Fresco artifacts as well. Fresco needs to be initialized. You should only do this 1 time, so placing the initialization in y...

Consider following is our function call. FindArea(120, 56); In this our first argument is length (ie 120) and second argument is width (ie 56). And we are calculating the area by that function. And following is the function definition. private static double FindArea(int length, int width) ...

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...

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...

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...

The specification says: A byte range digest shall be computed over a range of bytes in the file, that shall be indicated by the ByteRange entry in the signature dictionary. This range should be the entire file, including the signature dictionary but excluding the signature value itself (the Conte...

This script demonstrates how to receive complicated GUI events from different controls in the same event callback function. We'll be using two ListView controls for that. Now every time an action is detected on one of those ListView controls, we want a precise description of what happened and have ...

It is possible that the client browser does not support Javascript or have Javascript execution disabled, perhaps due to security reasons. To be able to tell users that a script is supposed to execute in the page, the <noscript> tag can be used. The content of <noscript> is displayed whe...

An unsigned JWT has the header value alg: none and an empty JWS (signature) component: eyJhbGciOiJub25lIn0 .eyJpc3MiOiJqb2UiLA0KICJleHAiOjEzMDA4MTkzODAsDQogImh0dHA6Ly9leGFtcGxlLmNvbS9pc19yb290Ijp0cnVlfQ . The trailing dot indicates that the signature is empty. Header { "alg": &q...

A signed JWT includes a Base64 Url Safe encoded signature as the third component. The algorithm used to generate the signature is indicated in the header. eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9 .eyJzdWIiOiJKb2huIERvZSIsImFkbWluIjp0cnVlLCJpYXQiOjE0NzAzNTM5OTQsImV4cCI6MTQ3MDM1NzYyNywianRpIjoiNmU0MDRiY...

To generalize type_trait creation:based on SFINAE there are experimental traits detected_or, detected_t, is_detected. With template parameters typename Default, template <typename...> Op and typename ... Args: is_detected: alias of std::true_type or std::false_type depending of the validi...

Classes, structs, enums and all their methods are internal by default. This means they can be only accessed from the same module. The test cases are in a different target an this means they are in a different module. To be able to access the method you want to test, you need to import the module to ...

C99 C99 introduced the concept of designated initializers. These allow you to specify which elements of an array, structure or union are to be initialized by the values following. Designated initializers for array elements For a simple type like plain int: int array[] = { [4] = 29, [5] = 31, [1...

With IpRateLimit middleware you can set multiple limits for different scenarios like allowing an IP or IP range to make a maximum number of calls in a time interval like per second, 15 minutes, etc. You can define these limits to address all requests made to an API or you can scope the limits to eac...

With ClientRateLimit middleware you can set multiple limits for different scenarios like allowing a Client to make a maximum number of calls in a time interval like per second, 15 minutes, etc. You can define these limits to address all requests made to an API or you can scope the limits to each URL...