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How to check null objects in jQuery
...a false value, so the elem.length expression evaluates to false - in other words, there is no need for the '!= 0' part
– James
Jan 25 '09 at 15:06
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How can we match a^n b^n with Java regex?
...The anchor ensures that there aren't any extra b's in the string; in other words, that in fact we have anbn.
Here's the finalized pattern, with additional test cases, including one that's 10,000 characters long:
$tests = array(
'aaa', 'aaab', 'aaaxb', 'xaaab', 'b', 'abbb', 'aabb', 'aaabbbbb', 'aaa...
Using the “start” command with parameters passed to the started program
...am files\Microsoft Virtual PC\Virtual PC.exe" -pc MY-PC -launch
In other words, give it an empty title before the name of the program to fake it out.
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Create two blank lines in Markdown
...ss today with &Newline; , with two trailing spaces, in both HTML and Word, which is what I need right now :-)
– Mike M
Aug 29 at 23:59
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Ruby on Rails generates model field:type - what are the options for field:type?
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(It's not the model name that's the issue, it's the word model as referring to the generator. rails g model Product … is fine.)
– Asherah
Jan 16 '14 at 1:41
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MongoDB Aggregation: How to get total records count?
...s now a new aggregation pipeline operator named 'facet' which in their own words:
Processes multiple aggregation pipelines within a single stage on the same set of input documents. Each sub-pipeline has its own field in the output document where its results are stored as an array of documents.
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'npm' is not recognized as internal or external command, operable program or batch file
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For Windows users: A picture tells a thousand words
Refrence: npm not recognized as internal or external command
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Java abstract interface
...s in interfaces may go away.
Assuming =0 got replaced by the abstract keyword, I suspect that abstract was at some point mandatory for interface methods!
Related article: Java: Abstract interfaces and abstract interface methods
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Automatic exit from bash shell script on error [duplicate]
...ls is part of the
command list immediately following a while or until keyword,
part of the test following the if or elif reserved words, part
of any command executed in a && or || list except the command
following the final && or ||, any command in a pipeline but
the last, ...
postgresql - sql - count of `true` values
...ll return null, so it should be COALESCE(sum(...),0) for you, or, in other words, count() is better,
– Daniel
Mar 22 '11 at 21:38
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