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@UniqueConstraint annotation in Java
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427
To ensure a field value is unique you can write
@Column(unique=true)
String username;
The @...
How can I make an svg scale with its parent container?
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469
To specify the coordinates within the SVG image independently of the scaled size of the image,...
Copying text outside of Vim with set mouse=a enabled
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14 Answers
14
Active
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What is the correct syntax of ng-include?
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edited Mar 10 '15 at 11:04
matthias krull
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answe...
Interface/enum listing standard mime-type constants
...l Bourque
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answered Feb 24 '12 at 0:08
Fabian BarneyFabian Barney
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How to convert / cast long to String?
...ing.valueOf(date);
If your Long might be null and you don't want to get a 4-letter "null" string, you might use Objects.toString, like: String s = Objects.toString(date, null);
EDIT:
You reverse it using Long l = Long.valueOf(s); but in this direction you need to catch NumberFormatException
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Can table columns with a Foreign Key be NULL?
...d (0.01 sec)
INSERT INTO child (id, parent_id) VALUES (2, 1);
-- ERROR 1452 (23000): Cannot add or update a child row: a foreign key
-- constraint fails (`t/child`, CONSTRAINT `child_ibfk_1` FOREIGN KEY
-- (`parent_id`) REFERENCES `parent` (`id`))
The first insert will pass because we insert a...
Height of status bar in Android [duplicate]
... the status bar depends on the screen size, for example in a device
with 240 X 320 screen size the status bar height is 20px, for a device with 320 X 480 screen size the status bar height is 25px, for a device with 480 x 800 the status bar height must be 38px
so i recommend to use this script to ...
How do you express binary literals in Python?
... express binary literals using the prefix 0b or 0B:
>>> 0b101111
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You can also use the new bin function to get the binary representation of a number:
>>> bin(173)
'0b10101101'
Development version of the documentation: What's New in Python 2.6
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Duplicate ID, tag null, or parent id with another fragment for com.google.android.gms.maps.MapFragme
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The answer Matt suggests works, but it cause the map to be recreated and redrawn, which isn't ...