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How to change colors of a Drawable in Android?
...er( 0xffff0000, Mode.MULTIPLY ). This would set white pixels to red but I don't think it would affect the transparent pixels.
See Drawable#setColorFilter
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Will strlen be calculated multiple times if used in a loop condition?
... that the value won't change, but I personally wouldn't rely on that.
I'd do something like
for (int i = 0, n = strlen(ss); i < n; ++i)
or possibly
for (int i = 0; ss[i]; ++i)
as long as the string isn't going to change length during the iteration. If it might, then you'll need to either c...
Git diff to show only lines that have been modified
When I do a git diff, it shows lines that have been added:
7 Answers
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Pick a random value from an enum?
...is caching the result of values() because each call copies an array. Also, don't create a Random every time. Keep one. Other than that what you're doing is fine. So:
public enum Letter {
A,
B,
C,
//...
private static final List<Letter> VALUES =
Collections.unmodifiableList(Arra...
Runnable with a parameter?
...r a "Runnable that accepts a parameter" although I know that such runnable doesn't really exist.
7 Answers
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History or log of commands executed in Git
Is there a way I can keep track of commands I used in Git under Windows? I want to view all the commands that I have applied on my repository.
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Can you nest html forms?
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I agree with the answer, but to ask another, why not? Why does HTML not allow for nesting forms? To me, it appears to be a limitation that we would be better off without. There are many examples where using nested forms would be easier to program (i.e. using an upload photo form wit...
Performance surprise with “as” and nullable types
...ing or conversion occurs, all machine code is inline and takes but about a dozen instructions. This needed to be really efficient back in .NET 1.0 when boxing was common.
Casting to int? takes a lot more work. The value representation of the boxed integer is not compatible with the memory layout ...
node.js child process - difference between spawn & fork
This might seem like a basic question, but I could not find any documentation :
3 Answers
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Is there a standard sign function (signum, sgn) in C/C++?
...t (or T) rather than an int, which seems wasteful.
Works for ints, floats, doubles, unsigned shorts, or any custom types constructible from integer 0 and orderable.
Fast! copysign is slow, especially if you need to promote and then narrow again. This is branchless and optimizes excellently
Standards...