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Pick a random element from an array
...array selection:
let array = ["Frodo", "sam", "wise", "gamgee"]
let randomIndex = Int(arc4random_uniform(UInt32(array.count)))
print(array[randomIndex])
The castings are ugly, but I believe they're required unless someone else has another way.
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How can I declare and define multiple variables in one line using C++?
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int column = 0, row = 0, index = 0;
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Uppercase Booleans vs. Lowercase in PHP
...e
case-insensitive.
So yeah, true === TRUE and false === FALSE.
Personally, however, I prefer TRUE over true and FALSE over false for readability reasons. It's the same reason for my preference on using OR over or or ||, and on using AND over and or &&.
The PSR-2 standard requires true...
When are C++ macros beneficial? [closed]
...ode fragments. Thus you can define a foreach macro:
#define foreach(list, index) for(index = 0; index < list.size(); index++)
And use it as thus:
foreach(cookies, i)
printf("Cookie: %s", cookies[i]);
Since C++11, this is superseded by the range-based for loop.
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How can I make SQL case sensitive string comparison on MySQL?
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@adjwilli If the column was a part of an index, you will suffer a performance hit on queries reliant on that index. To maintain performance, you need to actually alter the table.
– dshin
Sep 19 '13 at 18:50
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Return index of greatest value in an array
...y the best way, since it’s reliable and works on old browsers:
function indexOfMax(arr) {
if (arr.length === 0) {
return -1;
}
var max = arr[0];
var maxIndex = 0;
for (var i = 1; i < arr.length; i++) {
if (arr[i] > max) {
maxIndex = i;
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Email validation using jQuery
...ming more common this regex may need modifying .systems and .poker etc are all valid TLDs now but would fail the regex check
– Liath
Sep 5 '14 at 7:35
3
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How to replace NaN values by Zeroes in a column of a Pandas Dataframe?
... Thanks. Is my understanding correct that in that answer an "indexer that sets" is the outermost indexing operation (executed just before the assignment. So any assignment that only uses a single indexer is guaranteed to be safe, making your code safe?
– max
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How can I remove a character from a string using Javascript?
... one instance of r in the string.
However, it is always the character at index 4 (so the 5th character).
18 Answers
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Is PHP compiled or interpreted?
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He means the utility called php (or on windows php.exe) is compiled.
– sepp2k
Oct 3 '09 at 20:02
7
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