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How to delete multiple buffers in Vim?
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tmux doesn't bind <C-a> by default, but if you configured it to e.g. use <C-a> instead of <C-b> to emulate screen, you should also configure it to map, for example, <C-a>a to pass a <C-a> through to the program running inside...
Running code in main thread from another thread
...our background thread does not have (or need) a Context object
(suggested by @dzeikei):
// Get a handler that can be used to post to the main thread
Handler mainHandler = new Handler(Looper.getMainLooper());
Runnable myRunnable = new Runnable() {
@Override
public void run() {....} // Thi...
'transform3d' not working with position: fixed children
...that info..... I guess I got the equivalent to the mathematical answer: "by definition" :)
– Juan Carlos Moreno
Mar 16 '13 at 6:41
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How do I ignore a directory with SVN?
...set svn:ignore dirname .
If you have multiple things to ignore, separate by newlines in the property value. In that case it's easier to edit the property value using an external editor:
svn propedit svn:ignore .
share
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Disable/enable an input with jQuery?
...fficient because it has to select * then loop over each element and filter by tagname - if you pass the 4 tagname selectors directly it is MUCH faster. Also, :input is not a standard CSS selector, so any performance gains that are possible from querySelectorAll are lost
– gnar...
How to save and restore multiple different sessions in Vim?
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Ooo, and I almost forgot you can load it back by typing: gvim -S ~/mysession.vim
– Benj
Oct 29 '09 at 10:01
1
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Add custom messages in assert?
Is there a way to add or edit the message thrown by assert? I'd like to use something like
8 Answers
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Ruby: Easiest Way to Filter Hash Keys?
...dated.
I'm adding an update here to help others avoid getting sidetracked by this answer like I did.
As the other answer mentions, Ruby >= 2.5 added the Hash#slice method which was previously only available in Rails.
Example:
> { one: 1, two: 2, three: 3 }.slice(:one, :two)
=> {:one=>...
Cast List to List
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@RobertNoack: What do you mean by "the object reference"? The object reference of each element is the same, but that's not the same as casting the list reference itself. Suppose you could cast the reference, so that you had a reference of compile-time type...
Counting the number of elements with the values of x in a vector
... length, which represents how many times that value appeared in sequence.
By combining rle with sort, you have an extremely fast way to count the number of times any value appeared. This can be helpful with more complex problems.
Example:
> numbers <- c(4,23,4,23,5,43,54,56,657,67,67,435,45...