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How can I get list of values from dict?
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A slightly "better" link (to a specific spot on the page you posted): docs.python.org/2/library/stdtypes.html#dict.values
– mgilson
Apr 26 '13 at 3:46
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Python regular expressions return true/false
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Match objects are always true, and None is returned if there is no match. Just test for trueness.
if re.match(...):
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Clear variable in python
...ing a variable to null in PHP gives you similar behaviour in most cases as if you hadn't defined it in the first place. A value of None in Python is quite different from an undefined variable. None is quite like most other incarnations of null, however (until we get into more arcane details, at leas...
Detect permission of camera in iOS
... authStatus = [AVCaptureDevice authorizationStatusForMediaType:mediaType];
if(authStatus == AVAuthorizationStatusAuthorized) {
// do your logic
} else if(authStatus == AVAuthorizationStatusDenied){
// denied
} else if(authStatus == AVAuthorizationStatusRestricted){
// restricted, normally won'...
rmagick gem install “Can't find Magick-config”
...stalling, or even Ruby itself.
Do you have apt installed on your machine? If not, I'd recommend installing it, because it's a quick and easy way to get a lot of development libraries.
If you see people suggest installing "libmagick9-dev", that's an apt package that you'd install with:
$ sudo apt-...
Efficiently test if a port is open on Linux?
...output connection
exec 6<&- # close input connection
To determine if someone is listening, attempt to connect by loopback. If it fails, then the port is closed or we aren't allowed access. Afterwards, close the connection.
Modify this for your use case, such as sending an email, exiting t...
Draw multi-line text to Canvas
...enient in case text doesn't have any line breaks at start or we don't know if it has them...
– Ewoks
Apr 18 '12 at 14:39
6
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Link to reload current page
...n also use .. to refer to the folder above the current path, for instance, if you have this file structure:
page1.html
folder1
page2.html
You can then in page2.html write:
<a href="../page1.html">link to page 1</a>
EDIT:
I'm not sure if the behaviour has changed or if it was a...
Generate list of all possible permutations of a string
...= *b;
*b = temp;
}
void print(char *a, int i, int n) {
int j;
if(i == n) {
printf("%s\n", a);
} else {
for(j = i; j <= n; j++) {
swap(a + i, a + j);
print(a, i + 1, n);
swap(a + i, a + j);
}
}
}
int main(void) {
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URLEncoder not able to translate space character
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This behaves as expected. The URLEncoder implements the HTML Specifications for how to encode URLs in HTML forms.
From the javadocs:
This class contains static methods for
converting a String to the
application/x-www-form-urlencoded MIME
format.
and from the HTML Specification...