大约有 40,000 项符合查询结果（耗时：0.0396秒） [XML]
Flexbox and Internet Explorer 11 (display:flex in ?)
...="Content-Type" content="text/html; charset=UTF-8" >
<title>Flex Test</title>
<style>
html, body {
margin: 0px;
padding: 0px;
height: 100vh;
}
.main {
display: -webkit-flex;
display: flex;
-ms-flex-direction: row;
flex-direction: row;
...
Multiple Updates in MySQL
...ql warnings into runtime exceptions in your app.
I made some performance tests for three of suggested variants, including the INSERT ... ON DUPLICATE KEY UPDATE variant, a variant with "case / when / then" clause and a naive approach with transaction. You may get the python code and results here. ...
Read String line by line
...ce I was especially interested in the efficiency angle, I created a little test class (below). Outcome for 5,000,000 lines:
Comparing line breaking performance of different solutions
Testing 5000000 lines
Split (all): 14665 ms
Split (CR only): 3752 ms
Scanner: 10005
Reader: 2060
As usual, exact t...
How does PHP 'foreach' actually work?
...lways unset the next element, rather than the current one.
Examples: Your test cases
The three aspects described above should provide you with a mostly complete impression of the idiosyncrasies of the foreach implementation and we can move on to discuss some examples.
The behavior of your test c...
How to switch position of two items in a Python list?
...
you can use for example:
>>> test_list = ['title', 'email', 'password2', 'password1', 'first_name',
'last_name', 'next', 'newsletter']
>>> reorder_func = lambda x: x.insert(x.index('password2'), x.pop(x.index('password2')+1))
&...
How to run the sftp command with a password from Bash script?
...password not saved in .bash_history or similar by doing the following:
vi test_script.sh
Add the following to your file:
#!/bin/sh
HOST=<yourhostname>
USER=<someusername>
PASSWD=<yourpasswd>
cd <base directory for your put file>
lftp<<END_SCRIPT
open sftp://$HOST
...
Postgres: clear entire database before re-creating / re-populating from bash script
...elations found in the restore file. This means that if you add a table for testing, then want to remove it (to synchronise with the production DB for example), it will not be removed.
– ianaré
Aug 16 '12 at 16:19
...
WKWebView not loading local files under iOS 8
...-around here. IMO code shown in https://github.com/shazron/WKWebViewFIleUrlTest is full of unrelated details most people are probably not interested in.
The work-around is 20 lines of code, error handling and comments included, no need of a server :)
func fileURLForBuggyWKWebView8(fileURL: URL) th...
Count all occurrences of a string in lots of files with grep
...one shows the relevant files and then the total count of matches: grep -rc test . | awk -F: '$NF > 0 {x+=$NF; $NF=""; print} END{print "Total:",x}'
– Yaron
Sep 6 '17 at 11:40
...
C# “as” cast vs classic cast [duplicate]
...application domain semantics more naturally), readability and openness to testing are far weightier design objectives, because we're saving expensive developer time here, versus the nanoseconds that it takes to assemble a stack trace, etc.
– Evgeni Sergeev
Mar...