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std::unique_lock or std::lock_guard?
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The difference is that you can lock and unlock a std::unique_lock. std::lock_guard will be locked only once on construction and unlocked on destruction.
So for use case B you definitely need a std::unique_lock for the condition variable. In case A it depends ...
Is AsyncTask really conceptually flawed or am I just missing something?
...nnot believe that a class that flawed in design made it into the framework and no-one is talking about it, so I guess I just must be missing something.
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Simple argparse example wanted: 1 argument, 3 results
...tiny beginner brain to grasp right now. I don't need to do math on the command line or meddle with formatting lines on the screen or change option characters. All I want to do is "If arg is A, do this, if B do that, if none of the above show help and quit" .
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Renaming a virtualenv folder without breaking it
I've created folder and initialized a virtualenv instance in it.
10 Answers
10
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What is the best way to compare floats for almost-equality in Python?
...nown that comparing floats for equality is a little fiddly due to rounding and precision issues.
15 Answers
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How to extract the first two characters of a string in shell scripting?
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Probably the most efficient method, if you're using the bash shell (and you appear to be, based on your comments), is to use the sub-string variant of parameter expansion:
pax> long="USCAGol.blah.blah.blah"
pax> short="${long:0:2}" ; echo "${short}"
US
This will set short to be the f...
What is the rationale behind having companion objects in Scala?
...eton) for a class is needed? Why would I want to create a class, say Foo and also create a companion object for it?
7 Ans...
Override valueof() and toString() in Java enum
...d (getEnum in the sample code below) which returns the value that you need and change your client to use this method instead.
public enum RandomEnum {
StartHere("Start Here"),
StopHere("Stop Here");
private String value;
RandomEnum(String value) {
this.value = value;
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Can I extend a class using more than 1 class in PHP?
...nd it for use in production, one can use ReflectionClass to access private and protected methods.
– Denis V
Dec 18 '13 at 19:21
2
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How do I efficiently iterate over each entry in a Java Map?
If I have an object implementing the Map interface in Java and I wish to iterate over every pair contained within it, what is the most efficient way of going through the map?
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