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Shell script - remove first and last quote (") from a variable
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There's a simpler and more efficient way, using the native shell prefix/suffix removal feature:
temp="${opt%\"}"
temp="${temp#\"}"
echo "$temp"
${opt%\"} will remove the suffix " (escaped with a backslash to prevent shell interpretation).
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How can I scale an image in a CSS sprite
...an you please tell me if it is possible/how I can crop off a smaller image and then scale the cropped off region before I lay it out?
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What is difference between width, innerWidth and outerWidth, height, innerHeight and outerHeight in
... to see what is the difference, but they display me same results for width and height.
6 Answers
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#pragma mark in Swift?
...ons of my code in the symbol navigator. Since this is a C preprocessor command, it's not available in Swift. Is there a stand-in for this in Swift, or do I have to use ugly comments?
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How to make a node.js application run permanently?
On a Debian server, I installed Node.js. I understand how to launch an app from putty with this command line:
19 Answers
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What exactly is an Assembly in C# or .NET?
...on a given machine. That compiled code will also be stored in the assembly and reused on subsequent calls.
The assembly can also contain resources like icons, bitmaps, string tables and so on. Furthermore, the assembly also contains metadata in the assembly manifest - information like version numbe...
Decode Base64 data in Java
...eConverter has static methods that make this easy. See parseBase64Binary() and printBase64Binary().
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Manually raising (throwing) an exception in Python
...catch this')
raise Exception('This is the exception you expect to handle')
except Exception as error:
print('Caught this error: ' + repr(error))
>>> demo_bad_catch()
Caught this error: ValueError('Represents a hidden bug, do not catch this',)
Problem 2: Won't catch
A...
How good is Java's UUID.randomUUID?
I know that randomized UUIDs have a very, very, very low probability for collision in theory, but I am wondering, in practice, how good Java's randomUUID() is in terms of not having collision? Does anybody have any experience to share?
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What are the best practices for JavaScript error handling?
I'm looking to start making my JavaScript a bit more error proof, and I'm finding plenty of documentation on using try , catch , finally , and throw , but I'm not finding a ton of advice from experts on when and where to throw errors.
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