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Objective-C: Property / instance variable in category
...untime.h>
static void *MyClassResultKey;
@implementation MyClass
- (NSString *)test {
NSString *result = objc_getAssociatedObject(self, &MyClassResultKey);
if (result == nil) {
// do a lot of stuff
result = ...;
objc_setAssociatedObject(self, &MyClassResultKey, result, O...
How to connect to LocalDB in Visual Studio Server Explorer?
...aldb) or cannot find any provider in Server Explorer to accept connection string like (localdb)\v11.0;Integrated Security=true; I've seen this asked several places in StackOverflow but no answer works or marked as answer. Please help, this doesn't have to be this frustrating!
...
How to set text color to a text view programmatically [duplicate]
... the alpha is completely white - that is, no transparency). "#bdbdbd" is a string that is parsed to the same integer when passed into the function parseColor.
– Jave
Jul 23 '17 at 10:55
...
How to sort an array by a date property
...
Simplest Answer
array.sort(function(a,b){
// Turn your strings into dates, and then subtract them
// to get a value that is either negative, positive, or zero.
return new Date(b.date) - new Date(a.date);
});
More Generic Answer
array.sort(function(o1,o2){
if (sort_o1_bef...
How is an HTTP POST request made in node.js?
...OST request to the Google Compiler API:
// We need this to build our post string
var querystring = require('querystring');
var http = require('http');
var fs = require('fs');
function PostCode(codestring) {
// Build the post string from an object
var post_data = querystring.stringify({
'...
How can I escape white space in a bash loop list?
...doesn't contain the space character. Turn off globbing (set -f) to prevent strings containing glob characters such as [], * or ? from being expanded:
# this is unsafe (but less unsafe than it would be without the following precautions)
(
IFS=$'\n' # split only on newlines
set -f # disable glob...
Why should I capitalize my SQL keywords? [duplicate]
Simple question. I personally find a string of lowercase characters to be more readable than a string of uppercase characters. Is some old/popular flavor of SQL case-sensitive or something?
...
What is the difference between os.path.basename() and os.path.dirname()?
...ile name: here, 'foo.bar', and os.path.dirname(file_name) returns an empty string: ''.
– jkdev
Nov 26 '18 at 20:47
...
Raise warning in Python without interrupting program
... @Tomas Novotny you can capture stdout and stderr, then check that the strings issued by your warning are found within.
– wheaties
Oct 8 '10 at 15:33
16
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How do DATETIME values work in SQLite?
... dates and times as TEXT, REAL, or INTEGER values:
TEXT as ISO8601 strings ("YYYY-MM-DD HH:MM:SS.SSS").
REAL as Julian day numbers, the number of days since noon in Greenwich on November 24, 4714 B.C. according to the proleptic Gregorian calendar.
INTEGER as Unix Time, the number of se...