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Retain cycle on `self` with blocks
...nswered Dec 4 '10 at 8:14
Lily BallardLily Ballard
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Python list subtraction operation
... [1,2] you will get empty list. [1,1,2,2] - [2] gives [1,1] So it is not really list substraction, it is more like "List from List X without elements from set Y".
– Alfred Zien
Feb 6 '16 at 10:25
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How to get a Fragment to remove itself, i.e. its equivalent of finish()?
...er {
// onCreate etc
@Override
public void onFragmentSuicide(String tag) {
// Check tag if you do this with more than one fragmen, then:
getSupportFragmentManager().popBackStack();
}
}
public interface SuicidalFragmentListener {
void onFragmentSuicide(String ta...
How can Perl's print add a newline by default?
...necessarily verbose. There's no need to separate the newline into its own string. This is sufficient.
print "hello.\n";
This realization will probably make your coding easier in general.
In addition to using use feature "say" or use 5.10.0 or use Modern::Perl to get the built in say feature, I...
How to send an email with Gmail as provider using Python?
...smtp.gmail.com:587')
server.ehlo()
server.starttls()
Also you should really create From:, To: and Subject: message headers, separated from the message body by a blank line and use CRLF as EOL markers.
E.g.
msg = "\r\n".join([
"From: user_me@gmail.com",
"To: user_you@gmail.com",
"Subject:...
is there a css hack for safari only NOT chrome?
...3 (early 2020 Update) *
PLEASE PLEASE -- If you are having trouble, and really want to get help or help others by posting a comment about it, Post Your Browser and Device (MacBook/IPad/etc... with both browser and OS version numbers!)
Claiming none of these work is not accurate (and actually not ev...
What's the 'environment' task in Rake?
...pers, etc. Without the :environment, you won't have access to any of those extras.
Also => :environment itself does not make available any environment-related variables, e.g. environment, @environment, RAILS_ENV, etc.
sh...
How do I make a textarea an ACE editor?
...y', 'hidden'); to textarea.css('display', 'none'); otherwise I was getting extra blank space on the screen
– Nick Goloborodko
Jul 21 '14 at 7:46
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Get file size, image width and height before upload
...ileReader API
In case you need images sources as long Base64 encoded data strings
<img src="data:image/png;base64,iVBORw0KGg... ...lF/++TkSuQmCC=">
const EL_browse = document.getElementById('browse');
const EL_preview = document.getElementById('preview');
const readImage = file ...
Static classes and methods in coffeescript
...roLourenço Seems that a CoffeeScript class is a "static block" (with some extra stuff): jsfiddle.net/ambiguous/ap72ckax
– mu is too short
Oct 12 '17 at 17:59
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