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Swift make method parameter mutable?
...passing in a pointer.
func reduceToZero(_ x: inout Int) {
while (x != 0) {
x = x-1
}
}
var a = 3
reduceToZero(&a)
print(a) // will print '0'
This can be particularly useful in recursion.
Apple's inout declaration guidelines can be found here.
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Error: could not find function … in R
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10 Answers
10
Active
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scale Image in an UIButton to AspectFit?
...ze.width;
CGFloat targetHeight = targetSize.height;
CGFloat scaleFactor = 0.0;
CGFloat scaledWidth = targetWidth;
CGFloat scaledHeight = targetHeight;
CGPoint thumbnailPoint = CGPointMake(0.0,0.0);
if (!CGSizeEqualToSize(imageSize, targetSize)) {
CGFloat widthFactor = targetWidth / width...
Constructing pandas DataFrame from values in variables gives “ValueError: If using all scalar values
...t;>> df = pd.DataFrame({'A': [a], 'B': [b]})
>>> df
A B
0 2 3
or use scalar values and pass an index:
>>> df = pd.DataFrame({'A': a, 'B': b}, index=[0])
>>> df
A B
0 2 3
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Get mouse wheel events in jQuery?
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JasCav
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answered Nov 18 '11 at 22:19
Darin DimitrovDarin Dimitrov
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Getting “Lock wait timeout exceeded; try restarting transaction” even though I'm not using a transac
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Jeff Tian
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answered Apr 29 '11 at 20:54
MarkRMarkR
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Fixed page header overlaps in-page anchors
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170
I had the same problem.
I solved it by adding a class to the anchor element with the topbar heig...
How do you add a Dictionary of items into another Dictionary
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shucaoshucao
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How do I calculate the date in JavaScript three months prior to today?
... works for January. Run this snippet:
var d = new Date("January 14, 2012");
console.log(d.toLocaleDateString());
d.setMonth(d.getMonth() - 3);
console.log(d.toLocaleDateString());
There are some caveats...
A month is a curious thing. How do you define 1 month? 30 days? Most peo...
How to get the file name from a full path using JavaScript?
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edited Nov 30 '11 at 3:45
mikeschuld
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