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Understanding CUDA grid dimensions, block dimensions and threads organization (simple explanation) [
How are threads organized to be executed by a GPU?
2 Answers
2
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What's the difference between VARCHAR and CHAR?
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VARCHAR is variable-length.
CHAR is fixed length.
If your content is a fixed size, you'll get better performance with CHAR.
See the MySQL page on CHAR and VARCHAR Types for a detailed explanation (be sure to also read the comments).
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Why is using “for…in” for array iteration a bad idea?
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for (var i = 0; i < a.length; i++) {
// Iterate over numeric indexes from 0 to 5, as everyone expects.
console.log(a[i]);
}
/* Will display:
undefined
undefined
undefined
undefined
undefined
5
*/
can sometimes be totally different from the other:
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is there a Java equivalent to null coalescing operator (??) in C#? [duplicate]
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Sadly - no. The closest you can do is:
int y = (x != null) ? x : -1;
Of course, you can wrap this up in library methods if you feel the need to (it's unlikely to cut down on length much), but at the syntax level there isn't anything more succinct available.
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How to calculate the number of occurrence of a given character in each row of a column of strings?
I have a data.frame in which certain variables contain a text string. I wish to count the number of occurrences of a given character in each individual string.
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Determine which element the mouse pointer is on top of in JavaScript
...mentFromPoint which does what it sounds like.
What we need is to find the x and y coords of the mouse and then call it using those values:
var x = event.clientX, y = event.clientY,
elementMouseIsOver = document.elementFromPoint(x, y);
document.elementFromPoint
jQuery event object
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Can C++ code be valid in both C++03 and C++11 but do different things?
...ll now implicitly move them when possible.
On the negative side, several examples are listed in the appendix C of the standard. Even though there are many more negative ones than positive, each one of them is much less likely to occur.
String literals
#define u8 "abc"
const char* s = u8"def"; // Pr...
How to determine if one array contains all elements of another array
... @Chris - You could try using Array#uniq for that. With Holger Just's example, it would be (a2.uniq - a1.uniq).empty?
– Nick
Dec 4 '12 at 17:07
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Array slicing in Ruby: explanation for illogical behaviour (taken from Rubykoans.com)
I was going through the exercises in Ruby Koans and I was struck by the following Ruby quirk that I found really unexplainable:
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Is it possible to install APK file if more than one emulators/devices are connected [duplicate]
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yes, the number you are getting after executing adb devices
– Mohammed Azharuddin Shaikh
Aug 25 '11 at 7:09
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