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What is the use case of noop [:] in bash?
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It's there more for historical reasons. The colon builtin : is exactly equivalent to true. It's traditional to use true when the return value is important, for example in an infinite loop:
while true; do
echo 'Going on for...
Laravel redirect back to original destination after login
...t the time of this answer there was no official support from the framework itself. Nowadays you can use the method pointed out by bgdrl below this method: (I've tried updating his answer, but it seems he won't accept)
On auth filter:
// redirect the user to "/login"
// and stores the url being acc...
Forward declaration of nested types/classes in C++
I recently got stuck in a situation like this:
7 Answers
7
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How can I create a temp file with a specific extension with .NET?
I need to generate a unique temporary file with a .csv extension.
17 Answers
17
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Performance difference between IIf() and If
... foo = If(result, "Alternative")
The first is basically C#'s ternary conditional operator and the second is its coalesce operator (return result unless it’s Nothing, in which case return "Alternative"). If has thus replaced IIf and the latter is obsolete.
Like in C#, VB's conditional If operato...
What is the difference between JDK and JRE?
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The JRE is the Java Runtime Environment. It is a package of everything necessary to run a compiled Java program, including the Java Virtual Machine (JVM), the Java Class Library, the java command, and other infrastructure. However, it cannot be used to create new pr...
WebSockets vs. Server-Sent events/EventSource
...E connections can only push data to the browser. Online stock quotes, or twitters updating timeline or feed are good examples of an application that could benefit from SSE.
In practice since everything that can be done with SSE can also be done with Websockets, Websockets is getting a lot more atte...
Dashed line border around UIView
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You can set the border with this pattern using Layer and Bezier path like below examples.
Objective-C
CAShapeLayer *yourViewBorder = [CAShapeLayer layer];
yourViewBorder.strokeColor = [UIColor blackColor].CGColor;
yourViewBorder.fillColor = nil;
y...
Pointer vs. Reference
...d be better practice when giving a function the original variable to work with:
12 Answers
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How do I maintain the Immersive Mode in Dialogs?
How do I maintain the new Immersive Mode when my activities display a custom Dialog?
7 Answers
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