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Is double square brackets [[ ]] preferable over single square brackets [ ] in Bash?
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[[ has fewer surprises and is generally safer to use. But it is not portable - POSIX doesn't specify what it does and only some shells support it (beside bash, I heard ksh supports it too). For example, you can do
[[ -e $b ]]
to test whether a ...
Can I initialize a C# attribute with an array or other variable number of arguments?
...mple from a row test in our unit tests that tests a variable number of command line options;
[Row( new[] { "-l", "/port:13102", "-lfsw" } )]
public void MyTest( string[] args ) { //... }
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Get exit code of a background process
I have a command CMD called from my main bourne shell script that takes forever.
12 Answers
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How do I choose a HTTP status code in REST API for “Not Ready Yet, Try Again Later”? [closed]
...t generates all the blobs for all the thingies. Thingy 1234 already exists and its data, other than the blob, is already available. The server hasn't got to generating thingy 1234's blob yet.
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Do browsers send “\r\n” or “\n” or does it depend on the browser?
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The HTTP and MIME specs specify that header lines must end with \r\n, but they aren't clear (some would argue that it isn't clear if they are clear) about what to do with the contents of a TEXTAREA. (See, for instance, this thread fro...
Is there any way to enforce typing on NSArray, NSMutableArray, etc.?
... experience with Java shows that type variables improve code comprehension and make more refactorings possible.
– tgdavies
Nov 4 '10 at 16:52
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.NET WPF Remember window size between sessions
...ifferent type or structure will be needed.
Initialise the first two to 0 and the second two to the default size of your application, and the last one to false.
Create a Window_OnSourceInitialized event handler and add the following:
this.Top = Properties.Settings.Default.Top;
this.Left = Propert...
Redis is single-threaded, then how does it do concurrent I/O?
...pends on how you define concurrency.
In server-side software, concurrency and parallelism are often considered as different concepts. In a server, supporting concurrent I/Os means the server is able to serve several clients by executing several flows corresponding to those clients with only one com...
“static const” vs “#define” vs “enum”
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It depends on what you need the value for. You (and everyone else so far) omitted the third alternative:
static const int var = 5;
#define var 5
enum { var = 5 };
Ignoring issues about the choice of name, then:
If you need to pass a pointer around, you must use (1).
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How can I list ALL DNS records?
... example, to reduce the size of the response).
An AXFR is a zone transfer and is likely what you want. However, these are typically restricted and not available unless you control the zone. You'll usually conduct a zone transfer directly from the authoritative server (the @ns1.google.com below) and...