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Test for non-zero length string in Bash: [ -n “$var” ] or [ “$var” ]
...lumn 1b), the variable content is seen as a string and not evaluated.
The errors in columns 3a and 5a are caused by the fact that the variable value includes a space and the variable is unquoted. Again, as shown in columns 3b and 5b, [[ evaluates the variable's contents as a string.
Correspondingl...
git-checkout older revision of a file under a new name
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Hmm, with colon I see this error, so I thought that the colon was a mistake. Yes it seems like colon is the way to go, but how do I resolve this? prompt> git show HEAD^:main.cpp fatal: ambiguous argument 'HEAD^:main.cpp': unknown revision or path n...
Can I use Objective-C blocks as properties?
...al places use a type def
typedef void(^MyCompletionBlock)(BOOL success, NSError *error);
@property (nonatomic) MyCompletionBlock completion;
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Why doesn't Dictionary have AddRange?
...of the collection is left unchanged. As AddRange can fail due to duplicate errors, the way to keep its behavior consistent with Add would be to also make it atomic by throwing an exception on any duplicate, and leave the state of the original dictionary as unchanged.
As an API consumer, it would be...
How to write binary data to stdout in python 3?
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Programs using this can't be tested in IDLE 3: AttributeError: 'PseudoOutputFile' object has no attribute 'buffer'
– Damian Yerrick
May 18 '17 at 18:55
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How do you turn off version control in android studio?
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Thanks a ton , i was getting some errors with git and i'm just learning stuff and did;nt need Version control after all
– Sainath S.R
Dec 28 '14 at 9:58
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GCC -fPIC option
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Yes, building a shared library that isn't PIC could be an error.
– John Zwinck
Mar 15 '11 at 12:31
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How can I get the full object in Node.js's console.log(), rather than '[Object]'?
...ike it would occur with DOM objects, for example. Stringify will throw an "Error: Converting circular structure to JSON".
– Ignacio Lago
Jan 17 '14 at 16:47
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What is an idempotent operation?
...dempotent. E.g. discard(x) is idempotent, but pop() is not. It's all about error recovery.
– Andreas
Apr 27 '16 at 15:27
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git branch -d gives warning
...to origin/master. Later I did git pull origin on master branch. Still same error. Isn't this bug in GH ?
– vikramvi
Mar 8 '18 at 11:06
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