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Difference between map and collect in Ruby?
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Ruby provides an alias for programmers from the Smalltalk world to feel more at home.
Why is there a different implementation for arrays and enums? An enum is a generalized iteration structure, which means that there is no way in which Ruby can predict what the next element can be (you can def...
What is the proper way to check for null values?
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How to convert DateTime to VarChar
...ARCHAR to CHAR. See this post (stackoverflow.com/questions/59667/…) for more details. Essentially, there are 2 bytes of overhead involved in VARCHAR vs CHAR. In this scenario, we know that your string will always be 10 characters, so CHAR is appropriate.
– Will Ediger
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IPC performance: Named Pipe vs Socket
... on how well everything else is written), but end up with code that spends more time blocking for an IPC reply than it does doing useful work. Sure, non-blocking schemes help this, but those can be tricky. Spending years bringing old code into the modern age, I can say, the speedup is almost nil in ...
How to show a dialog to confirm that the user wishes to exit an Android Activity?
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Fastest way to find second (third…) highest/lowest value in vector or column
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Reverse colormap in matplotlib
...ted) have a colors attribute. Reversing LinearSegmentedColormaps is a bit more complex. (You need to reverse every item in the _segmentdata dict.)
– Joe Kington
Jun 15 '13 at 21:22
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How to save a plot as image on the disk?
... have to explicitly print the plot. See this answer that explains this in more detail and also links to the R FAQ: ggplot's qplot does not execute on sourcing
2. I'm currently looking at a plot on my screen and I want to copy it 'as-is' to disk.
dev.print(pdf, 'filename.pdf')
This should copy...
Random alpha-numeric string in JavaScript? [duplicate]
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How do I get the full path to a Perl script that is executing?
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