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What is the difference between :first-child and :first-of-type?
... finally understand. If I wanted the first div under a div element I would call div:first-of-type, because there could be non-div elements above it. It was a little confusing, but I understand now. This is an excellent and very informative post. Thank you and your help is greatly appreciated.
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Is 'switch' faster than 'if'?
... retq
.LBB0_1:
jmpq *.LJTI0_0(,%rax,8)
jmp void call<0u>() # TAILCALL
jmp void call<1u>() # TAILCALL
jmp void call<2u>() # TAILCALL
jmp void call<3u>() # TAILCALL
jmp vo...
Should I Dispose() DataSet and DataTable?
...e both implement IDisposable, so, by conventional best practices, I should call their Dispose() methods.
10 Answers
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Can dplyr package be used for conditional mutating?
... edited Feb 12 at 13:34
alan ocallaghan
2,36899 silver badges2626 bronze badges
answered Oct 8 '16 at 18:22
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Ignore mouse interaction on overlay image
...nd-image:url(../img/reflection.png);
background-repeat:no-repeat;
width: 195px;
pointer-events:none;
}
pointer-events attribute works pretty good and is simple.
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What is a 'Closure'?
...ope when the function was first defined to still be in scope when we later call the function, even if we call the function in a completely different context.
For example
Here's a really simple example in JavaScript that illustrates the point:
outer = function() {
var a = 1;
var inner = functi...
What do 'real', 'user' and 'sys' mean in the output of time(1)?
... the process.
Real is wall clock time - time from start to finish of the call. This is all elapsed time including time slices used by other processes and time the process spends blocked (for example if it is waiting for I/O to complete).
User is the amount of CPU time spent in user-mode code (out...
How to call an external command?
How do you call an external command (as if I'd typed it at the Unix shell or Windows command prompt) from within a Python script?
...
Interface Builder: What are the UIView's Layout iOS 6/7 Deltas for?
...ke your job a bit easier if you fall into this niche category, and they've called this iOS 6/7 Deltas.
Ok then, what does it do?
Whilst the label in Interface Builder is a bit unclear as to what 'Delta' means in this context, the code contained in the .xib file that corresponds to this feature is ...
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...