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Is explicitly closing files important?
...of course for this magic to work the object must have the especial methods __enter__ and __exit__, in the latter the object do the close and any other cleanup stuff that need to be done at the end of the with statement...
– Copperfield
Mar 26 '16 at 13:02
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How to launch Safari and open URL from iOS app
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@g_fred. Why would he not be able to include a Swift version?
– ericgu
Mar 24 '15 at 13:21
2
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Equivalent to 'app.config' for a library (DLL)
... is very important to read the appcfg values, the file name should be "DLL_NAME.DLL.CONFIG"
– SaddamBinSyed
Dec 10 '17 at 5:33
2
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Getting All Variables In Scope
...omething along the lines of what KennyTM pointed out (for (var propName in ____)) since that will tell you what's available on various objects provided to you (this and arguments; if you're not sure what arguments they give you, you can find out via the arguments variable that's implicitly defined f...
How does collections.defaultdict work?
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Is it functionally different than using d.get(key, default_val) ?
– Ambareesh
May 1 '19 at 1:31
35
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Get img thumbnails from Vimeo?
...ic video,
use the following url:
http://vimeo.com/api/v2/video/video_id.output
video_id The ID of the video you want information for.
output Specify the
output type. We currently offer JSON,
PHP, and XML formats.
So getting this URL http://vimeo.com/api/v2/video/6271487.xml
...
Best way to test if a row exists in a MySQL table
...ng':
SELECT * FROM test WHERE texte LIKE '%something%' LIMIT 1 with
mysql_num_rows() : 0.039061069488525s. (FASTER)
SELECT count(*) as count FROM test WHERE text LIKE '%something% :
16.028197050095s.
SELECT EXISTS(SELECT 1 FROM test WHERE text LIKE '%something%') :
0.87045907974243s.
SELECT EXIS...
How to detect if app is being built for device or simulator in Swift
...ect iOS on a desktop architecture like follows
#if (arch(i386) || arch(x86_64)) && os(iOS)
...
#endif
After Swift 4.1 version
Latest use, now directly for all in one condition for all types of simulators need to apply only one condition -
#if targetEnvironment(simulator)
// ...
What is the difference between linear regression and logistic regression?
...gistic regression was introduced.
Source: http://gerardnico.com/wiki/data_mining/simple_logistic_regression
Outcome
In linear regression, the outcome (dependent variable) is continuous.
It can have any one of an infinite number of possible values.
In logistic regression, the outcome (dependen...
How to detect a Christmas Tree? [closed]
...ert rgb image (uint, 0-255) to hsv (float, 0.0-1.0)
hsvimg = colors.rgb_to_hsv(rgbimg.astype(float)/255)
# Initialize binary thresholded image
binimg = np.zeros((rgbimg.shape[0], rgbimg.shape[1]))
# Find pixels with hue<0.2 or hue>0.95 (red or yellow) and saturation/value
...