大约有 19,024 项符合查询结果（耗时：0.0280秒） [XML]
Check Whether a User Exists
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I suggest to use id command as it tests valid user existence wrt passwd file entry which is not necessary means the same:
if [ `id -u $USER_TO_CHECK 2>/dev/null || echo -1` -ge 0 ]; then
echo FOUND
fi
Note: 0 is root uid.
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How to convert a string to lower or upper case in Ruby
...Very similar to the patch @fakeleft referenced, and I have it in my .irbrc file. I monkey patch Object and create #own_methds with this: (obj.methods - obj.class.superclass.instance_methods).sort
– mlambie
Feb 3 '13 at 18:34
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How to determine the screen width in terms of dp or dip at runtime in Android?
I need to code the layout of the android widgets using dip/dp (in java files). At runtime if I code,
int pixel=this.getWindowManager().getDefaultDisplay().getWidth() ;
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execJs: 'Could not find a JavaScript runtime' but execjs AND therubyracer are in Gemfile
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In your gemfile add:
gem 'execjs'
gem 'therubyracer', :platforms => :ruby
For more details:
ExecJS and could not find a JavaScript runtime
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Fastest way to implode an associative array with keys
... $request_str=print_r($_REQUEST,true); // flatten array for log file
– zzapper
Jan 8 '13 at 10:46
2
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How to change title of Activity in Android?
...et system handle the rest (not dynamic) then do like this in your manifest file:
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
and...
Python 2.7 getting user input and manipulating as string without quotations
... approach would be to treat the user input (from sys.stdin) like any other file. Try
import sys
sys.stdin.readline()
If you want to keep it short, you can use raw_input which is the same as input but omits the evaluation.
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When converting a project to use ARC what does “switch case is in protected scope” mean?
...an into the same issue. It is a horrible error message and a bug has been filed (which will be fixed in a future version of the compiler) to correct it. But, yes, the scoping rules within case statements in C are really very... odd.
– bbum
Sep 27 '11 at 4:12...
how to override action bar back button in android?
... the "android:parentActivityName=".MainActivity" section from the manifest file.
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passport.js passport.initialize() middleware not in use
... it still throws this error. I updated my question with the new express.js file/
– Naor
May 28 '13 at 6:17
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