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Test if lists share any items in python
... generally the fastest.
There are four common ways to test if two lists a and b share any items. The first option is to convert both to sets and check their intersection, as such:
bool(set(a) & set(b))
Because sets are stored using a hash table in Python, searching them is O(1) (see here for...
How to call C from Swift?
...ion, which can be used as a little explanation, on how to bridge between C and Swift:
main.swift
import Foundation
var output: CInt = 0
getInput(&output)
println(output)
UserInput.c
#include <stdio.h>
void getInput(int *output) {
scanf("%i", output);
}
cliinput-Bridging-Heade...
How to get position of a certain element in strings vector, to use it as an index in ints vector?
...C++11 you can use std::distance in place of subtraction for both iterators and pointers:
ptrdiff_t pos = distance(Names.begin(), find(Names.begin(), Names.end(), old_name_));
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Can I try/catch a warning?
I need to catch some warnings being thrown from some php native functions and then handle them.
11 Answers
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Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)
...so force using a socket with the socket parameter (-S with /usr/bin/mysql) and force TCP/IP by providing a port (-P with /usr/bin/mysql.)
– Kaoru
Jun 1 '14 at 11:17
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Count cells that contain any text
... edited Jul 15 '18 at 17:48
Andy
15.6k88 gold badges4646 silver badges6868 bronze badges
answered Oct 5 '12 at 13:21
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SELECT INTO using Oracle
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I though SELECT INTO was part of the Standard. Did Oracle do something strange here or was it never part of the standard?
– Robert Gould
Feb 12 '10 at 7:21
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Android: Rotate image in imageview by an angle
...wing code to rotate a image in ImageView by an angle. Is there any simpler and less complex method available.
25 Answers
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What is the difference between RegExp’s exec() function and String’s match() function?
...ch, in array form.
}
// No more matches.
String.match does this for you and discards the captured groups.
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iOS start Background Thread
... is responsible for setting up the new thread's autorelease pool, run loop and other configuration details – see "Using NSObject to Spawn a Thread" in Apple's Threading Programming Guide.
You'd probably be better off using Grand Central Dispatch, though:
dispatch_async(dispatch_get_global_queue(...