大约有 2,600 项符合查询结果（耗时：0.0200秒） [XML]
@UniqueConstraint annotation in Java
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I'm currently using play framework too with hibernate and JPA 2.0 annotation and this model works without problems
@Entity
@Table(uniqueConstraints={@UniqueConstraint(columnNames = {"id_1" , "id_2"})})
public class class_name {
@Id
@GeneratedValue
public Long id;
@NotNull
pub...
How to change Git log date formats
...r --date=rfc2822) shows timestamps in RFC 2822 format,
often found in E-mail messages.
--date=short shows only date but not time, in YYYY-MM-DD format.
--date=raw shows the date in the internal raw git format %s %z format.
--date=default shows timestamps in the original timezone
(either commi...
Bootstrap datepicker hide after selection
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If it's any help to anyone, the Version 2.0 of the bootstrap datepicker no longer works with the accepted answer.
Here's how I got it working on mine:
$('yourpickerid').datepicker({
format: 'dd/mm/yyyy',
}).on('changeDate', function(e){
$(this).datepicker...
Remove unused imports in Android Studio
... Well... I pressed this combination using the Android Studio version 2.0 and worked for me. The control + option + O key worked too (I noticed right now), so, forget my last comment and try this combination.
– Filipe Brito
Apr 20 '16 at 17:59
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Android Google Maps v2 - set zoom level for myLocation
...ewLatLngZoom(new LatLng(location.getLatitude(), location.getLongitude()), 12.0f));
}
}
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How to give System property to my test via Gradle and -D
...dle itself adds when testing; you can see the code here: github.com/CLOVIS-AI/wildfyre-java/blob/master/src/main/java/…
– CLOVIS
Jan 12 '19 at 15:30
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Django ModelForm: What is save(commit=False) used for?
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As a "real example", consider a user model where the email address and the username are always the same, and then you could overwrite your ModelForm's save method like:
class UserForm(forms.ModelForm):
...
def save(self):
# Sets username to email before saving
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“Instantiating” a List in Java? [duplicate]
...rrayList<T>();
This is in contrast with .NET, where, since version 2.0, List<T> is the default implementation of the IList<T> interface.
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Do sealed classes really offer performance Benefits?
...lization optimization for sealed classes and methods, improving IronPython 2.0 pystone performance by 4%. Other programs can expect similar improvement [Rodrigo].". Sealed classes can improve performance, but as always, it depends on situation.
– Smilediver
Nov...
np.mean() vs np.average() in Python NumPy?
...7]
f = np.ma.masked_greater(g,5)
np.average(f)
Out: 34.0
np.mean(f)
Out: 2.0
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