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Validating URL in Java
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For the benefit of the community, since this thread is top on Google when searching for
"url validator java"
Catching exceptions is expensive, and should be avoided when possible. If you just want to verify your String is a valid URL, you can us...
Linq to Entities join vs groupjoin
...t a GroupJoin is? How is it different from a regular inner Join ? Is it commonly used? Is it only for method syntax? What about query syntax? A c# code example would be nice.
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What is the difference between CascadeType.REMOVE and orphanRemoval in JPA?
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How do you append to an already existing string?
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How do you set the text in an NSTextField?
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How should I read a file line-by-line in Python?
... value-based way to the contents of a file, but managing file handles is a completely separate task. Squashing both, invisibly, into one action, is surprising to humans who read the code and makes it more difficult to reason about program behavior.
Other languages have essentially come to the same...
Which is generally best to use — StringComparison.OrdinalIgnoreCase or StringComparison.InvariantCul
...elp you decide which is best to use in your situation.
From MSDN's "New Recommendations for Using Strings in Microsoft .NET 2.0"
Summary: Code owners previously using the InvariantCulture for string comparison, casing, and sorting should strongly consider using a new set of String overloads in ...
What exactly does the “u” do? “git push -u origin master” vs “git push origin master”
...es not tell me, either. Please
specify which branch you want to use on the command line and
try again (e.g. 'git pull <repository> <refspec>').
See git-pull(1) for details.
If you often merge with the same branch, you may want to
use something like the following in your configuration fi...
How can you diff two pipelines in Bash?
...ff two pipelines without using temporary files in Bash? Say you have two command pipelines:
3 Answers
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Understanding the Event Loop
... Then who is going to keep working on setTimeout while other requests keep coming and get executed.
There's only 1 thread in the node process that will actually execute your program's JavaScript. However, within node itself, there are actually several threads handling operation of the event loop m...