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how to use sed, awk, or gawk to print only what is matched?
I see lots of examples and man pages on how to do things like search-and-replace using sed, awk, or gawk.
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Passing an array as a function parameter in JavaScript
I'd like to call a function using an array as parameters:
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Can a class member function template be virtual?
I have heard that C++ class member function templates can't be virtual. Is this true?
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Add a common Legend for combined ggplots
..._point(position=position_jitter(w=0.04,h=0.02),size=1.8)
#extract legend
#https://github.com/hadley/ggplot2/wiki/Share-a-legend-between-two-ggplot2-graphs
g_legend<-function(a.gplot){
tmp <- ggplot_gtable(ggplot_build(a.gplot))
leg <- which(sapply(tmp$grobs, function(x) x$name) == "gui...
Why use pointers? [closed]
...this is a really basic question, but I've just started with some basic C++ programming after coding a few projects with high-level languages.
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Sass combining parent using ampersand (&) with type selectors
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As Kumar points out, this has been possible since Sass 3.3.0.rc.1 (Maptastic Maple).
The @at-root directive causes one or more rules to be emitted at the root of the document, rather than being nested beneath their parent selector...
How can I see what has changed in a file before committing to git?
I've noticed that while working on one or two tickets, if I step away, I'm not sure what I worked on, what changed, etcetera.
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How do I “git blame” a deleted line?
...to give it a try, then don't wait any longer and let me know how it goes.
https://github.com/eantoranz/difflame
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Does Java support default parameter values?
...found is how Java handles it (that is, with overloading instead of default parameters).
For constructors, See Effective Java: Programming Language Guide's Item 1 tip (Consider static factory methods instead of constructors) if the overloading is getting complicated. For other methods, renaming some...
Python, compute list difference
In Python, what is the best way to compute the difference between two lists?
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