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What does “var FOO = FOO || {}” (assign a variable or an empty object to that variable) mean in Java
...g the global object.
The reason why it's used is so that if you have two (or more) files:
var MY_NAMESPACE = MY_NAMESPACE || {};
MY_NAMESPACE.func1 = {
}
and
var MY_NAMESPACE = MY_NAMESPACE || {};
MY_NAMESPACE.func2 = {
}
both of which share the same namespace it then doesn't matter in which ...
Use space as a delimiter with cut command
...ut of a command aligning some columns with spaces. (and the google search for that lead me here)
In this case a single cut command is not sufficient, and you need to use:
tr -s ' ' | cut -d ' ' -f 2
Or
awk '{print $2}'
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Is it safe to get values from a java.util.HashMap from multiple threads (no modification)?
... construction of the HashMap and any reading threads that may access it before it is fully constructed. Most of the discussion is about what happens to the state of the map object, but this is irrelevant since you never modify it - so the only interesting part is how the HashMap reference is publish...
Initialize class fields in constructor or at declaration?
...0.0…).
Prefer initialization in declaration if you don't have a constructor parameter that changes the value of the field.
If the value of the field changes because of a constructor parameter put the initialization in the constructors.
Be consistent in your practice (the most important rule).
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'adb' is not recognized as an internal or external command, operable program or batch file
I am trying to run google map v2 on emulator, I am following this tutorial.
When I was trying to install required apk file on emulator, I am getting below error.
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How can I check the system version of Android?
...droid.os.Build.VERSION.
CODENAME: The current development codename, or the string "REL" if this is a release build.
INCREMENTAL: The internal value used by the underlying source control to represent this build.
RELEASE: The user-visible version string.
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What is AppDomain? [duplicate]
What is an AppDomain ? What are the benefits of AppDomains or why
Microsoft brought the concept of AppDomains, what was the problem without AppDomains?
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When should I choose Vector in Scala?
It seems that Vector was late to the Scala collections party, and all the influential blog posts had already left.
6 Answ...
PHP append one array to another (not array_push or +)
...g like:
$merge = $a + $b;
// $merge now equals array('a','b')
Will not work, because the + operator does not actually merge them. If they $a has the same keys as $b, it won't do anything.
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How to import a jar in Eclipse
How do I import a jar in Eclipse?
9 Answers
9
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