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Hidden Features of MySQL
...e number of concurrent connections. The default value is 100 connections (151 since 5.0) - very small.
Note:
connections take memory and your OS might not be able to handle a lot of connections.
MySQL binaries for Linux/x86 allow you to have up to 4096 concurrent connections, but self compiled ...
Sleep until a specific time/date
....g. this syntax:
current_epoch=$(date +%s.%N)
target_epoch=$(date -d "20:25:00.12345" +%s.%N)
sleep_seconds=$(echo "$target_epoch - $current_epoch"|bc)
sleep $sleep_seconds
Note that macOS / OS X does not support precision below seconds, you would need to use coreutils from brew instead → se...
Merge multiple lines (two blocks) in Vim
... that's not what you want.
If you want to do this with just Ex commands
:5,8del | let l=split(@") | 1,4s/$/\=remove(l,0)/
will transform
work it
make it
do it
makes us
harder
better
faster
stronger
~
into
work it harder
make it better
do it faster
makes us stronger
~
UPDATE: An answe...
Installing Bootstrap 3 on Rails App
...
Patricio Sard
1,69322 gold badges1515 silver badges4444 bronze badges
answered Aug 22 '13 at 4:06
hawkhawk
5,260...
Modular multiplicative inverse function in Python
...ome point.
– Thomas
Nov 4 '14 at 13:59
1
...
Running a command in a Grunt Task
...
105
Alternatively you could load in grunt plugins to help this:
grunt-shell example:
shell: {
ma...
Alternatives to gprof [closed]
...|
edited Jan 18 '11 at 16:59
Peter Mortensen
26.5k2121 gold badges9292 silver badges122122 bronze badges
...
Print new output on same line [duplicate]
...rd:
>>> for i in range(1, 11):
... print(i, end='')
...
12345678910>>>
Note that you'll have to print() the final newline yourself. BTW, you won't get "12345678910" in Python 2 with the trailing comma, you'll get 1 2 3 4 5 6 7 8 9 10 instead.
...
Stretch background image css?
...er;
}
Works in:
Safari 3+
Chrome Whatever+
IE 9+
Opera 10+ (Opera 9.5 supported background-size but not the keywords)
Firefox 3.6+ (Firefox 4 supports non-vendor prefixed version)
In addition you can try this for an IE solution
filter: progid:DXImageTransform.Microsoft.AlphaImageLoader(src...
Detect blocked popup in Chrome
... thing you can do is wrap your test in a setTimeout() and give the popup 3-5 seconds to complete loading before running the test. It's not perfect, but it should work at least 95% of the time.
Here's the code I use for cross-browser detection, without the Chrome part.
function _hasPopupBlocker(pop...