大约有 5,600 项符合查询结果（耗时：0.0278秒） [XML]
Rearrange columns using cut
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What version? perl -ae print works as cat for me
– pwes
Jan 20 '17 at 12:33
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How to extract the first two characters of a string in shell scripting?
...rom a file
To leave first two chars, just remove columns starting from 3
cat file | colrm 3
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What does “Object reference not set to an instance of an object” mean? [duplicate]
...for myPet == null... AND for myPet.PetType == null
if ( myPet.PetType == "cat" ) <--- fall down go boom!
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Convert timestamp to date in MySQL query
... up as 2018-Nov-6. You may be looking for '%Y-%m-%d' as you'd format it in PHP (date('Y-m-d',$row->user_created_at)) - this (both variants, SQL and PHP) shows up as 2018-11-06
– Chris S.
Nov 7 '18 at 9:19
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How to select rows that have current day's timestamp?
... in the index anyway. So, it doesn't hurt to explicitly add it (and it may catch some optimizer blind spots). It's certainly not relevant in this case/query.
– ypercubeᵀᴹ
Nov 5 '13 at 12:52
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Heroku push rejected, no Cedar-supported app detected
... missing some key file that it uses to identify your app (and its type).
php: index.php
python: requirements.txt
ruby: Gemfile # note the capitalization
node: package.json
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Bash ignoring error for a particular command
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The solution:
particular_script || true
Example:
$ cat /tmp/1.sh
particular_script()
{
false
}
set -e
echo one
particular_script || true
echo two
particular_script
echo three
$ bash /tmp/1.sh
one
two
three will be never printed.
Also, I want to add that when pipefai...
Adding header for HttpURLConnection
...e use headers. I have to validate some credentials from android I am using php on xammp. how should i go for it. as i don't know how to write php code with headers
– Pankaj Nimgade
Feb 17 '15 at 8:00
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Getting the last argument passed to a shell script
...=$BASH_ARGV # official built-in (but takes more typing :)
That's it.
$ cat lastarg
#!/bin/bash
# echo the last arg given:
_last=${!#}
echo $_last
_last=$BASH_ARGV
echo $_last
for x; do
echo $x
done
Output is:
$ lastarg 1 2 3 4 "5 6 7"
5 6 7
5 6 7
1
2
3
4
5 6 7
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“elseif” syntax in JavaScript
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@JayK: Haha.. PHP has elseif, perl has elsif (I think), and Python has elif.. that kind of annoyed me at first, but... I guess it's kind of cute. It does serve a slight purpose in Python and PHP though, because it wouldn't work with their ...