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Efficient string concatenation in C++
I heard a few people expressing worries about "+" operator in std::string and various workarounds to speed up concatenation. Are any of these really necessary? If so, what is the best way to concatenate strings in C++?
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How to set tint for an image view programmatically in android?
....setColorFilter(ContextCompat.getColor(context, R.color.COLOR_YOUR_COLOR), android.graphics.PorterDuff.Mode.MULTIPLY);
For Vector Drawable
imageView.setColorFilter(ContextCompat.getColor(context, R.color.COLOR_YOUR_COLOR), android.graphics.PorterDuff.Mode.SRC_IN);
UPDATE:
@ADev has newer soluti...
What is the PostgreSQL equivalent for ISNULL()
...ited Jan 14 '12 at 2:28
Erwin Brandstetter
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answered Feb 6 '10 at 20:02
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How to set background color of an Activity to white programmatically?
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Get a handle to the root layout used, then set the background color on that. The root layout is whatever you called setContentView with.
setContentView(R.layout.main);
// Now get a handle to any View contained
// within the ...
How to place two divs next to each other?
...pper div to contain both the floated children, or it will think it's empty and not put the border around them
Floating both divs:
#wrapper {
width: 500px;
border: 1px solid black;
overflow: hidden; /* add this to contain floated children */
}
#first {
width: 300px;
float:left; ...
What does “DAMP not DRY” mean when talking about unit tests?
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It's a balance, not a contradiction
DAMP and DRY are not contradictory, rather they balance two different aspects of a code's maintainability. Maintainable code (code that is easy to change) is the ultimate goal here.
DAMP (Descriptive And Meaningful Phrases) promo...
Relative paths based on file location instead of current working directory [duplicate]
...o is get the absolute path of the script (available via ${BASH_SOURCE[0]}) and then use this to get the parent directory and cd to it at the beginning of the script.
#!/bin/bash
parent_path=$( cd "$(dirname "${BASH_SOURCE[0]}")" ; pwd -P )
cd "$parent_path"
cat ../some.text
This will make your s...
How to handle multiple heterogeneous inputs with Logstash?
Let's say you have 2 very different types of logs such as technical and business logs and you want:
3 Answers
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Deleting an object in java?
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So I should make all of my textviews and imagebuttons null in the onPause?
– Ruchir Baronia
Jan 10 '16 at 0:44
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How to put a label on an issue in GitHub if you are not a contributor / owner?
I've submitted an issue for a project on GitHub which is not mine and I'm not a contributor, but I cannot find a way to label my issue. Is there a way for me to label it, or is this only available for contributors?
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