大约有 42,000 项符合查询结果(耗时:0.0712秒) [XML]
Returning a boolean from a Bash function
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338
Use 0 for true and 1 for false.
Sample:
#!/bin/bash
isdirectory() {
if [ -d "$1" ]
then...
Requests — how to tell if you're getting a 404
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320
Look at the r.status_code attribute:
if r.status_code == 404:
# A 404 was issued.
Demo:...
What exactly does the post method do?
... Yair Kukielka
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answered Dec 12 '12 at 12:56
TalhaTalha
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Store select query's output in one array in postgres
...dited Oct 26 '17 at 16:59
user8839064
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answered Jun 19 '11 at 11:46
Denis de BernardyDenis d...
How do I load an HTML page in a using JavaScript?
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edited Jan 21 '19 at 13:14
Neuron
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answered J...
SQL how to increase or decrease one for a int column in one command
...gahooagahooa
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32
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How can you tell when a layout has been drawn?
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396
You can add a tree observer to the layout. This should return the correct width and height. on...
How to access a mobile's camera from a web app?
...LittleBobbyTables - Au Revoir
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answered Nov 21 '12 at 8:56
AshishAshish
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Can you put two conditions in an xslt test attribute?
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phihagphihag
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a...
What is the easiest way to duplicate an activerecord record?
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To get a copy, use the clone (or dup for rails 3.1+) method:
# rails < 3.1
new_record = old_record.clone
#rails >= 3.1
new_record = old_record.dup
Then you can change whichever fields you want.
ActiveRecord overrides the built-in Object#clone to give you a new ...
