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Display filename before matching line
...ith the built-in Mac grep (2.5.1-FreeBSD). But to use the alternative grep from Homebrew, another way is to run brew install grep and then just use ggrep. No need to modify PATH.
– wonderlr
Jun 4 '19 at 16:11
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Getting indices of True values in a boolean list
...
For huge lists, it'd be better to use itertools.compress:
>>> from itertools import compress
>>> list(compress(xrange(len(t)), t))
[4, 5, 7]
>>> t = t*1000
>>> %timeit [i for i, x in enumerate(t) if x]
100 loops, best of 3: 2.55 ms per loop
>>> %timei...
How can I recover a lost commit in Git?
...y dropped a commit I should have kept when rebasing. This totally saved me from redo-ing a couple hours worth of work.
– josephting
Jan 10 '19 at 6:30
41
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Could not execute editor
...regard to option -f,
For the GUI version, Vim will not fork and detach from the shell it was started in. ... This option should be used when Vim is executed by a program that will wait for the edit session to finish (e.g. mail).
Well I'm not using a GUI version, that I know of. I'm running git...
Convert a list to a dictionary in Python
...ike the following, which doesn't make any temporary lists like the above.
from itertools import izip
i = iter(a)
b = dict(izip(i, i))
In Python 3 you could also use a dict comprehension, but ironically I think the simplest way to do it will be with range() and len(), which would normally be a cod...
How to get file_get_contents() to work with HTTPS?
...t and it still doesn't work. And allow_url_fopen. Only non https urls work from localhost.
– Curtis
Dec 24 '19 at 4:55
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Is right click a Javascript event?
...themselves, browsers set a property to the event object that is accessible from the event handling function:
document.body.onclick = function (e) {
var isRightMB;
e = e || window.event;
if ("which" in e) // Gecko (Firefox), WebKit (Safari/Chrome) & Opera
isRightMB = e.whic...
Replace whitespaces with tabs in linux
...e beginning with number 0 (e.g. 0 1 2), then the line will be ommitted from the result.
– Nikola Novak
Jun 29 '14 at 18:13
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access denied for load data infile in MySQL
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@Stewart, please remove 'local' from the above command. Later mysql versions do not seem to support this flag when global variable 'local_infile' variable is set to 'ON' (as below). The command will therefore, be; mysql> load data infile 'home/data.txt'...
Why is typeof null “object”?
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From the MDN page about the behaviour of the typeof operator:
null
// This stands since the beginning of JavaScript
typeof null === 'object';
In the first implementation of JavaScript, JavaScript values were represented ...