大约有 45,000 项符合查询结果（耗时：0.0561秒） [XML]
Check if EditText is empty. [closed]
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For validating EditText use EditText#setError method for show error and for checking empty or null value use inbuilt android class TextUtils.isEmpty(strVar) which return true if strVar is null or zero length
EditText etUserName = (EditText) findViewById(R.id...
Rails respond_with: how does it work?
...r json: resource
elsif request.post? or request.put?
if resource.errors.any?
render json: {:status => 'failed', :errors => resource.errors}
else
render json: {:status => 'created', :object => resource}
end
end
end
end
While there may be some ...
How do I redirect to the previous action in ASP.NET MVC?
...rer is NULL when I was in the some page and want to get to view I know got error just by entering URL in address bar. Why when I enter URL in Address Bar it can't determine UrlReferrer?
– QMaster
Jan 7 '15 at 12:27
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How can I install pip on Windows?
...'t have a C/C++ compiler installed and configured, you'll see this cryptic error message.
Error: Unable to find vcvarsall.bat
You can fix that by installing a C++ compiler such as MinGW or Visual C++. Microsoft actually ships one specifically for use with Python. Or try Microsoft Visual C++ Co...
Finding last occurrence of substring in string, replacing that
...ly like this solution but having replacements=None parameter seems like an error to me because if the parameter is omitted the function will give an error (tried in Python 2.7). I would suggest either remove the default value, set it to -1 (for unlimited replacements) or better make it replacements=...
How do I find out my MySQL URL, host, port and username?
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I am getting "ERROR 1146 (42S02): Table 'performance_schema.session_variables' doesn't exist"
– Mark A
Apr 6 '17 at 19:08
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When do I use fabs and when is it sufficient to use std::abs?
... That's weird. Your call should've been ambiguous (and thus an error) right?
– Nick
Jan 12 '13 at 15:57
Sh...
How to get sp_executesql result into a variable?
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Oops, my bad. There was an error in my 2nd select, which meant it was returning zero rows. This method works great, and doesn't require a temp table!
– Mike Causer
May 3 '12 at 6:10
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Android 'Unable to add window — token null is not for an application' exception
...opics/ui/dialogs.html#CustomDialog) for creating a custom dialog have this error. Context mContext = getApplicationContext(); Dialog dialog = new Dialog(mContext); Your fix leads to Dialog dialog = new Dialog(this); Which works! Thanks
– bnieland
Sep 21 '1...
How to cherry-pick from a remote branch?
...elopment branch, I have to use the merge commit hash to avoid "bad object" error.
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