大约有 37,000 项符合查询结果（耗时：0.0647秒） [XML]
JQuery find first parent element with specific class prefix
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answered Sep 17 '11 at 20:38
Matt BallMatt Ball
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sqlalchemy IS NOT NULL select
...b. If the target is None, produces a IS NOT NULL.
or use isnot() (new in 0.7.9):
Implement the IS NOT operator.
Normally, IS NOT is generated automatically when comparing to a value of None, which resolves to NULL. However, explicit usage of IS NOT may be desirable if comparing to boolean...
Specifying colClasses in the read.csv
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answered May 10 '10 at 18:36
George DontasGeorge Dontas
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How can I determine if a String is non-null and not only whitespace in Groovy?
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tim_yatestim_yates
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How to define @Value as optional
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answered Jul 8 '16 at 16:05
Andy BrownAndy Brown
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What integer hash function are good that accepts an integer hash key?
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edited Mar 21 '09 at 22:53
Svante
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PowerShell script not accepting $ (dollar) sign
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answered Oct 23 '09 at 18:23
Shankar R10NShankar R10N
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npm install vs. update - what's the difference?
...in package.json:
{
"name": "my-project",
"version": "1.0", // install update
"dependencies": { // ------------------
"already-installed-versionless-module": "*", // ignores "1.0" -> "1.1"
"already...
git: switch branch without detaching head
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edited May 5 '14 at 16:40
user456814
answered Jan 22 '09 at 23:44
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How to export plots from matplotlib with transparent background?
...e keyword argument transparent=True to save the image as a png file.
In [30]: x = np.linspace(0,6,31)
In [31]: y = np.exp(-0.5*x) * np.sin(x)
In [32]: plot(x, y, 'bo-')
Out[32]: [<matplotlib.lines.Line2D at 0x3f29750>]
In [33]: savefig('demo.png', transparent=True)
Result:
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