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Can't find a “not equal” css attribute selector
...v foo="z">ZZZ</div>
div:not([foo='']) will select both the first and second div elements. If you only want div elements that have an attribute foo that is set to an empty string, you should use:
div[foo]:not([foo=''])
If you want all elements with attribute foo that is neither y nor z, y...
How to document Ruby code?
...ur documentation for the RDoc processor, which can find your documentation and generate HTML from it. You've put your comment in the right place for that, but you should have a look at the RDoc documentation to learn about the kinds of tags that RDoc knows how to format. To that end, I'd reformat yo...
Using git commit -a with vim
...ile with :q while in the normal mode.
You can combine both these actions and do Esc:wqEnter to save the commit and quit vim.
As an alternate to the above, you can also press ZZ while in the normal mode, which will save the file and exit vim. This is also easier for some people as it's the same ke...
Get the first N elements of an array?
...c", "d", "e");
$output = array_slice($input, 0, 3); // returns "a", "b", and "c"
There is only a small issue
If the array indices are meaningful to you, remember that array_slice will reset and reorder the numeric array indices. You need the preserve_keys flag set to trueto avoid this. (4th par...
Java: Literal percent sign in printf statement
I'm trying to add an actual percent sign into a printf statement in Java and I'm getting the error:
3 Answers
...
Use didSelectRowAtIndexPath or prepareForSegue method for UITableView?
I'm using storyboards and I have a UITableView. I have a segue setup that pushes from my table to the detail VC. But which method should I use to handle this? I'll have to pass a couple objects to the detail view. But do I use didSelectRowAtIndex or -(void)prepareForSegue:(UIStoryboardSegue *...
How do you plot bar charts in gnuplot?
...ata.dat' every 2::1 using 1:2 with boxes ls 2
If you want to be tricky and use some neat gnuplot tricks:
Gnuplot has psuedo-columns that can be used as the index to color:
plot 'data.dat' using 1:2:0 with boxes lc variable
Further you can use a function to pick the colors you want:
mycolo...
Printing newlines with print() in R
.../program F=filename")
File not supplied.
Usage: ./program F=filename>
and
> cat("File not supplied.\nUsage: ./program F=filename","\n")
File not supplied.
Usage: ./program F=filename
>
The reason print() doesn't do what you want is that print() shows you a version of the object from th...
Git Ignores and Maven targets
... man page. The pattern */target/* should ignore any directory named target and anything under it. Or you may try */target/** to ignore everything under target.
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Undoing a git bisect mistake
I'm doing a non-automated git bisect via command line. All is going well until I accidentally hit return on the wrong line in my command history, and rather than running the test, I run 'git bisect good' (or bad). Oops - I don't yet know if this commit should be marked good or bad, yet that's what I...