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How to jump directly to a column number in Vim
...nough to provide me the exact crash coordinates in the form of line number and column number. However I can't find a way to directly jump to the column number, even though I can jump to the line so easily.
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Why is it impossible to build a compiler that can determine if a C++ function will change the value
...er any given program will terminate. This is known as the halting problem, and it's one of those things that's not computable.
To be clear, you can write a compiler that can determine that a function does change the variable in some cases, but you can't write one that reliably tells you that the fu...
What is the relative performance difference of if/else versus switch statement in Java?
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That's micro optimization and premature optimization, which are evil. Rather worry about readabililty and maintainability of the code in question. If there are more than two if/else blocks glued together or its size is unpredictable, then you may high...
Passing command line arguments to R CMD BATCH
.... I am now at the point where I would like to pass an argument to the command, but am having some issues getting it working. If I do R CMD BATCH my_script.R blabla then blabla becomes the output file, rather than being interpreted as an argument available to the R script being executed.
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Search for selection in vim
I use vim and vim plugins for visual studio when writing C++. Often, I find myself wanting to search for a string within a function, for example every call to object->public_member.memberfunc() .
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How to use stringstream to separate comma separated strings [duplicate]
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Why do you guys always use std:: and full namespaces instead of using namespace? Is there specific reasoning for this? I just always find it as a very noisy and had-to-read syntax.
– Dmitry Gusarov
Oct 14 '19 at 2:45
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When to use nil, blank, empty? [duplicate]
Is there any guidelines on how to differentiate between .nil? , .blank? and .empty? ?
4 Answers
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How to check if an email address exists without sending an email?
...determine if a recipient actually exists:
You can connect to the server, and issue a VRFY command. Very few servers support this command, but it is intended for exactly this. If the server responds with a 2.0.0 DSN, the user exists.
VRFY user
You can issue a RCPT, and see if the mail is rejected...
What is the difference between a map and a dictionary?
... values. Isn't a dictionary the same? What is the difference between a map and a dictionary 1 ?
11 Answers
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Plotting a list of (x, y) coordinates in python matplotlib
...t is making two plots, where the index of the list gives the x-coordinate, and the first plot's y values are the a s in the pairs and the second plot's y values are the b s in the pairs.
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