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How can I repeat a character in Bash?
...ay matter with large repeat counts).
Summary:
If your repeat count is small, say up to around 100, it's worth going with the Bash-only solutions, as the startup cost of external utilities matters, especially Perl's.
Pragmatically speaking, however, if you only need one instance of repeating ch...
Distinct() with lambda?
...
IEnumerable<Customer> filteredList = originalList
.GroupBy(customer => customer.CustomerId)
.Select(group => group.First());
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Is there a standardized method to swap two variables in Python?
...his tuple object have still been made, but it doesn't matter, Python internally knows where it is
then, the left-hand side is evaluated, that is to say the tuple is assigned to the left-hand side
as the left-hand side is composed of two identifiers, the tuple is unpacked in order that the first ide...
git add, commit and push commands in one?
...ing off of @Gavin's answer:
Making lazygit a function instead of an alias allows you to pass it an argument. I have added the following to my .bashrc (or .bash_profile if Mac):
function lazygit() {
git add .
git commit -a -m "$1"
git push
}
This allows you to provide a commit message...
Open a file with su/sudo inside Emacs
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My point was really that you pay the cost for the first opened file, and not for any of the others.
– EfForEffort
Jun 13 '13 at 15:02
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Find Results not displaying Results
...ws displays summary information, but not the actual lines matched. This is all my Find Results window displays:
7 Answers
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Vim search and replace selected text
...
This quick and simple mapping search for visually highlighted text (without over-writing the h register) and without using the terminal dependant + register:
" search for visually hightlighted text
vnoremap <c-f> y<ESC>/<c-r>"<CR>
If you do...
Deep null checking, is there a better way?
...'d say
cake?.frosting?.berries?.loader
and the compiler would generate all the short-circuiting checks for you.
It didn't make the bar for C# 4. Perhaps for a hypothetical future version of the language.
Update (2014):
The ?. operator is now planned for the next Roslyn compiler release. Note ...
CSS background image alt attribute
This is one I have not had to tackle before. I need to use alt tags on all images in a site including those used by CSS background-image attribute.
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Under what circumstances are linked lists useful?
...he new Thread Pool, (with the local "queues" implemented as stacks, essentially). (The other main supporting structure being ConcurrentQueue<T>.)
The new Thread Pool in turn provides the basis for the work scheduling of the new
Task Parallel Library.
So they can certainly be useful - a link...