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What is the function of the push / pop instructions used on registers in x86 assembly?
... 0xdeadbeef ; push a value to the stack
pop eax ; eax is now 0xdeadbeef
; swap contents of registers
push eax
mov eax, ebx
pop ebx
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How do I check if an HTML element is empty using jQuery?
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I do not know why but method from this answer: if($.trim($("selector").html())=='') worked. .is(':empty') did not!
– Zeljko Miloradovic
Jun 8 '18 at 17:48
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Removing first x characters from string?
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@jamylak does it work, now , if so do you need to downvote?
– U10-Forward
Jan 29 at 1:36
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How does the compilation/linking process work?
... output of the preprocessor. The compiler parses the pure C++ source code (now without any preprocessor directives) and converts it into assembly code. Then invokes underlying back-end(assembler in toolchain) that assembles that code into machine code producing actual binary file in some format(ELF,...
How to join two sets in one line without using “|”
... id(c) == id(a). Even if a was destroyed, c wouldn't have been. Also, c is now set([1, 2, 3, 4]), so @jorgenkg's comment is correct.
– johndodo
Jan 19 '18 at 10:07
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CSS disable text selection
...t: none;-moz-user-select: none;-ms-user-select: none;user-select: none;}
now you can enable input and text-area enable
input, textarea{
-webkit-touch-callout:default;
-webkit-user-select:text;
-khtml-user-select: text;
-moz-user-select:text;
-ms-user-select:text;
user-select:text;}
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load and execute order of scripts
There are so many different ways to include JavaScript in a html page. I know about the following options:
4 Answers
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Why is an int in OCaml only 31 bits?
Haven't seen this "feature" anywhere else. I know that the 32nd bit is used for garbage collection. But why is it that way only for ints and not for the other basic types?
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Selecting only numeric columns from a data frame
...de
## nums <- sapply(x, is.numeric)
For a more idiomatic modern R I'd now recommend
x[ , purrr::map_lgl(x, is.numeric)]
Less codey, less reflecting R's particular quirks, and more straightforward, and robust to use on database-back-ended tibbles:
dplyr::select_if(x, is.numeric)
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Best way to test for a variable's existence in PHP; isset() is clearly broken
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Ah ha! NOW you're talkin'! How would you do that for, say, class properties?
– chazomaticus
Jan 6 '09 at 21:23
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