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JavaScript check if variable exists (is defined/initialized)
Which method of checking if a variable has been initialized is better/correct?
(Assuming the variable could hold anything (string, int, object, function, etc.))
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What are unit tests, integration tests, smoke tests, and regression tests?
What are unit tests, integration tests, smoke tests, and regression tests? What are the differences between them and which tools can I use for each of them?
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Is there a way that I can check if a data attribute exists?
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edited Aug 22 '18 at 12:53
James McCormack
8,75233 gold badges4444 silver badges5353 bronze badges
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Why CancellationToken is separate from CancellationTokenSource?
...or a rationale of why .NET CancellationToken struct was introduced in addition to CancellationTokenSource class. I understand how the API is to be used, but want to also understand why it is designed that way.
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O(nlogn) Algorithm - Find three evenly spaced ones within binary string
I had this question on an Algorithms test yesterday, and I can't figure out the answer. It is driving me absolutely crazy, because it was worth about 40 points. I figure that most of the class didn't solve it correctly, because I haven't come up with a solution in the past 24 hours.
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chrome undo the action of “prevent this page from creating additional dialogs”
...re-enable alerting for debugging. Of course I can close the tab and reload it but Is there a better way?
7 Answers
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What does the Java assert keyword do, and when should it be used?
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edited Sep 2 '15 at 16:25
answered May 3 '10 at 14:14
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Multi-Line Comments in Ruby?
...ine comments.
The =begin and =end must be at the beginning of the line or
it will be a syntax error.
=end
puts "Hello world!"
<<-DOC
Also, you could create a docstring.
which...
DOC
puts "Hello world!"
"..is kinda ugly and creates
a String instance, but I know one guy
with a Smalltalk bac...
What's the equivalent of use-commit-times for git?
...of files on my local and on my server to be in sync. This is accomplished with Subversion by setting use-commit-times=true in the config so that the last modified of each file is when it was committed.
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Is putting a div inside an anchor ever correct?
...o forth, even entire sections, so long as there is no interactive content within (e.g. buttons or other links)".
HTML 4.01 specifies that <a> elements may only contain inline elements. A <div> is a block element, so it may not appear inside an <a>.
Of course you are at liberty to ...