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Can someone explain __all__ in Python?
...oo:
$ cat > run.py
from main import *
foo()
bar()
main() # expected to error here, not exported
$ python run.py
Traceback (most recent call last):
File "run.py", line 4, in <module>
main() # expected to error here, not exported
NameError: name 'main' is not defined
...
Linux: compute a single hash for a given folder & contents?
...to/folder -type f -print0 | sort -z | xargs -0 sha1sum | sha1sum
And, finally, if you also need to take account of permissions and empty directories:
(find path/to/folder -type f -print0 | sort -z | xargs -0 sha1sum;
find path/to/folder \( -type f -o -type d \) -print0 | sort -z | \
xargs -0...
How to link to apps on the app store
...wController.loadProduct(withParameters: parameters) { [weak self] (loaded, error) -> Void in
if loaded {
// Parent class of self is UIViewContorller
self?.present(storeViewController, animated: true, completion: nil)
}
}
}
private func productViewContro...
MySQL > Table doesn't exist. But it does (or it should)
...se that uses InnoDB tables, you will get this crazy 'table does not exist' error mentioned above.
The issue is that you need the ib* files in the root of the MySQL datadir (e.g. ibdata1, ib_logfile0 and ib_logfile1).
When I copied those it worked for me.
...
possible EventEmitter memory leak detected
...How can you debug "Warning: Possible EventEmitter memory leak detected. 11 error listeners added. Use emitter.setMaxListeners() to increase limit". What should we be looking for?
– Phil
Oct 18 '16 at 6:44
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使用App Inventor扩展实现多点触控：Scale Detector · App Inventor 2 中文网
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使用App Inventor扩展实现多点触控：Scale Detector
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草稿（9 月 13 日）：构建扩展需要 App Inventor Extensions 功能，该功能尚未合并到 App Inventor 版本中。 但是你可以使用...
How to get Bitmap from an Uri?
...wallpaper size). getBitmap() calls decodeStream() which fails with the OOM error from stackoverflow.com/questions/2220949/handling-large-bitmaps. Any other advice? MediaStore.Images.Thumbnails.getThumbnail() apparently does not take a contentURI.
– pjv
Jun 3 '1...
Newline in JLabel
...
@NitinBansal Actually it's recommended in the new version of HTML to leave it as <br>. It's called a void tag. <br /> still works for backwards compatibility.
– gsingh2011
Apr 27 '12 at 3:50
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Detect the Internet connection is offline?
...: To put the entire application in an "offline" state may lead to a lot of error-prone work of handling state.. wireless connections may come and go, etc. So your best bet may be to just fail gracefully, preserve the data, and alert the user.. allowing them to eventually fix the connection problem ...
PHP DOMDocument loadHTML not encoding UTF-8 correctly
...
The workaround is very simple:
If you try the default, you will get the error you described
$str = $dom->saveHTML(); // saves incorrectly
All you have to do is save as follows:
$str = $dom->saveHTML($dom->documentElement); // saves correctly
This line of code will get your UTF-8 ch...