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Split value from one field to two
... last name and the first name of users. Is it possible to split those into 2 fields memberfirst , memberlast ?
13 Answer...
Find nearest latitude/longitude with an SQL query
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219
SELECT latitude, longitude, SQRT(
POW(69.1 * (latitude - [startlat]), 2) +
POW(69.1 * ...
How do I know that the UICollectionView has been loaded completely?
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62
// In viewDidLoad
[self.collectionView addObserver:self forKeyPath:@"contentSize" options:NSKeyV...
Quick and easy file dialog in Python?
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208
Tkinter is the easiest way if you don't want to have any other dependencies.
To show only the ...
How to read multiple text files into a single RDD?
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edited Aug 21 '19 at 23:06
ChrisWue
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Get exit code of a background process
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12 Answers
12
Active
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Why can I change value of a constant in javascript
...nst x = {};
x.foo = 'bar';
console.log(x); // {foo : 'bar'}
x.foo = 'bar2';
console.log(x); // {foo : 'bar2'}
and this:
const y = [];
y.push('foo');
console.log(y); // ['foo']
y.unshift("foo2");
console.log(y); // ['foo2', 'foo']
y.pop();
console.log(y); // ['foo2']
but neither of...
How to automatically generate N “distinct” colors?
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82
You can use the HSL color model to create your colors.
If all you want is differing hues (likel...
Why is reading lines from stdin much slower in C++ than Python?
...ed together. For example:
int myvalue1;
cin >> myvalue1;
int myvalue2;
scanf("%d",&myvalue2);
If more input was read by cin than it actually needed, then the second integer value wouldn't be available for the scanf function, which has its own independent buffer. This would lead to unexp...
Is there a good reason I see VARCHAR(255) used so often (as opposed to another length)?
...tiple courses, books, and jobs, I have seen text fields defined as VARCHAR(255) as kind of the default for "shortish" text. Is there any good reason that a length of 255 is chosen so often, other than being a nice round number ? Is it a holdout from some time in the past when there was a good rea...