Tutorial by Topics: ng

{ -code- } stopped { -error- }{ -no-error- } ifelse % error catching frame $error /errorname get % stackunderflow typecheck rangecheck etc $error /newerror get % bool. put false to deactivate error $error /ostack get % copy of operand stack at point of error errordict /stackoverf...

unittest { ... } - a block that is only run in "unittesting" mode assert(<expression that evaluates to a boolean>, <optional error message>)

@ExceptionHandler(ExceptionToBeHandled.class) @ExceptionHandler({ExceptionToBeHandled.class, AnotherExceptionToBeHandled.class})

Spring Boot makes it easy to create Spring-powered, production-grade applications and services with absolute minimum fuss. It favors convention over configuration. Spring Data JPA, part of the larger Spring Data family, makes it easy to implement JPA based repositories. It makes it easier to build ...

There are several reason to invalidate a JWT token before its expiration time: account deleted/blocked/suspended, password or permissions changed, user logged out by admin. JWT is self-contained, signed and stored outside of the server context, so revoking a token is not a simple action.

git flow <subcommand> git flow init git flow [feature|release|hotfix] [start|finish] SubcommandDetailsinitInitialize a new git repo with support for the branching model.featureManage your feature branches.releaseManage your release branches.hotfixManage your hotfix branches. gitf...

Asset catalogs are way to manage multiple resolutions of iOS image assets. In order to display optimal images, iOS uses 1x, 2x, and 3x versions of each image according to the device's screen density. The 1x version is only for very old, non-retina devices so it isn't necessary for apps only suppor...

Instrumentation getInstrumentation() UIDevice UiDevice.getInstance(Instrumentation instrumentation) boolean UIDevice.pressHome() boolean UIDevice.pressBack() boolean UIDevice.pressRecentApps() void UIDevice.wakeUp() boolean UIDevice.swipe(int startX, int startY, int endX, int endY, int steps...

ParameterDetailsusernameThe name of the user. Do not use capital letters, do not use dots, do not end it in dash, it must not include colons, no special characters. Cannot start with a number. You cannot remove a logged in user To modify any user but your own, you need root privileges

if (condition) { ... } if (condition) { ... } else { ... } if (condition) { ... } else if (condition) { ... } else { ... } // Braces are optional for single line statements if (condition) ... else if (condition) ... else ... switch (expression) { case pattern: ... default: ... } condition ?...