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What and where are the stack and heap?
...set aside as scratch space for a thread of execution. When a function is called, a block is reserved on the top of the stack for local variables and some bookkeeping data. When that function returns, the block becomes unused and can be used the next time a function is called. The stack is always ...
Command line for looking at specific port
...ic port from the Windows command line? I know I can use netstat to examine all ports but netstat is slow and looking at a specific port probably isn't.
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C++ new int[0] — will it allocate memory?
... When the value of the expression in a direct-new-declarator is zero, the allocation function is called to allocate an array with no elements.
From 3.7.3.1/2
The effect of dereferencing a pointer returned as a request for zero size is undefined.
Also
Even if the size of the space reques...
Which kind of pointer do I use when?
Ok, so the last time I wrote C++ for a living, std::auto_ptr was all the std lib had available, and boost::shared_ptr was all the rage. I never really looked into the other smart pointer types boost provided. I understand that C++11 now provides some of the types boost came up with, but not all ...
What are the implications of using “!important” in CSS? [duplicate]
...e more specific a selector is, the more importance is added to it. This usually coincides with how often the selected element occurs. For example:
button {
color: black;
}
button.highlight {
color: blue;
font-size: 1.5em;
}
button#buyNow {
color: green;
font-size: 2em;
}
...
Can someone explain in simple terms to me what a directed acyclic graph is?
...t a directed acyclic graph is? I have looked on Wikipedia but it doesn't really make me see its use in programming.
13 Answ...
How to pause a YouTube player when hiding the iframe?
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The easiest way to implement this behaviour is by calling the pauseVideo and playVideo methods, when necessary. Inspired by the result of my previous answer, I have written a pluginless function to achieve the desired behaviour.
The only adjustments:
I have added a functio...
Does name length impact performance in Redis?
I like to use verbose names in Redis, for instance set-allBooksBelongToUser:$userId .
4 Answers
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How do I get the fragment identifier (value after hash #) from a URL?
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To be honest, IE8 is so insecure, all the payment gateways basically is going to drop any browser not supporting TLS 1.2 next week (30 June 2018), you will not be able to do payments from them at all. So that makes all these old crappy browsers useless for an...
List of Stored Procedures/Functions Mysql Command Line
...ill show you the definition of a procedure. And
help show
will show you all the available options for the show command.
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