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How can I run an external command asynchronously from Python?
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Cdleary is absolutely correct, it should be mentioned that communicate and wait do block, so only do it when you are waiting for things to shut down. (Which you should really do to be well-behaved)
– Ali Afshar
Mar 11 '09 at 22:29
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How to break out from a ruby block?
...is in a loop without terminating the loop. To do that, I made the block a one-iteration loop:
for b in 1..2 do
puts b
begin
puts 'want this to run'
break
puts 'but not this'
end while false
puts 'also want this to run'
end
Hope this helps the next googler ...
MySQL case insensitive select
Can anyone tell me if a MySQL SELECT query is case sensitive or case insensitive by default? And if not, what query would I have to send so that I can do something like:
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Why are dashes preferred for CSS selectors / HTML attributes?
...m the DOM anyway, which makes the whole dot notation rather useless. Which one would you prefer?
var firstName = $('#first-name');
var firstName = document.querySelector('#first-name');
var firstName = document.forms[0].first_name;
I find the two first options much more preferable, especially sin...
javax vs java package
...: While an official explanation (the search orbfish suggested didn't yield one in the first page or so) is no doubt about "core" vs "extension", I still suspect that in many cases the decision for any particular package has an historical reason behind it too. Is java.beans really that "core" to Java...
Auto detect mobile browser (via user-agent?) [closed]
... suits your case), like
RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} (OneMobileUserAgent|AnotherMobileUserAgent|...)
RewriteRule (.*) mobile/$1
which would move, for example, requests to http://domain/index.html to http://domain/mobile/index.html
If you don't like the approach of having a s...
MySql Table Insert if not exist otherwise update
...ERT ... ON DUPLICATE KEY UPDATE on tables against a table having more than one unique or primary key. Taken from MySQL documentation: In addition, beginning with MySQL 5.5.24, an INSERT ... ON DUPLICATE KEY UPDATE statement against a table having more than one unique or primary key is also marked a...
Should struct definitions go in .h or .c file?
... of struct s in headers and just declarations—is there any advantage to one method over the other?
6 Answers
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Random string generation with upper case letters and digits
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Answer in one line:
''.join(random.choice(string.ascii_uppercase + string.digits) for _ in range(N))
or even shorter starting with Python 3.6 using random.choices():
''.join(random.choices(string.ascii_uppercase + string.digits, k=...
Code for a simple JavaScript countdown timer?
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Spot on, as you said that's the one and only way to do it right!
– mcella
Oct 23 '14 at 14:42
3
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