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How to check whether a variable is a class or not?
I was wondering how to check whether a variable is a class (not an instance!) or not.
9 Answers
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Getting hold of the outer class object from the inner class object
I have the following code. I want to get hold of the outer class object using which I created the inner class object inner . How can I do it?
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Implementation difference between Aggregation and Composition in Java
I'm aware of the conceptual differences between Aggregation and Composition. Can someone tell me the implementation difference in Java between them with examples?
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Cleaner way to update nested structures
Say I have got following two case class es:
7 Answers
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How do you validate a URL with a regular expression in Python?
...pp Engine. I'm incredibly new to Python and have been beating my head against the following problem for the past 3 days.
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What is a Python egg?
I'm new to Python and am just trying to understand how its packages work. Presumably "eggs" are some sort of packaging mechanism, but what would be a quick overview of what role they play and may be some information on why they're useful and how to create them?
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How do I export UIImage array as a movie?
... initWithURL:
[NSURL fileURLWithPath:somePath] fileType:AVFileTypeQuickTimeMovie
error:&error];
NSParameterAssert(videoWriter);
NSDictionary *videoSettings = [NSDictionary dictionaryWithObjectsAndKeys:
AVVideoCodecH264, AVVideoCodecKey,
[NSNumber numberWithInt:640], AVVideoWidth...
Storing money in a decimal column - what precision and scale?
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Never say never: sometimes money amounts are pro rata'd and need to add up again later. Example: dividing total dividend (relatively small) dibided by number of shares in issue (relatively small) to give net per share. Sometimes float rounds bett...
What is the difference between PS1 and PROMPT_COMMAND
...AND expression. It includes PS1 so that this variable is re-evaluated each time the PROMPT_COMMAND variable is evaluated.
PROMPT_COMMAND='RET=$?;\
BRANCH="";\
ERRMSG="";\
if [[ $RET != 0 ]]; then\
ERRMSG=" $RET";\
fi;\
if git branch &>/dev/null; then\
BRANCH=$(git branch 2&...
Format output string, right alignment
I am processing a text file containing coordinates x, y, z
7 Answers
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