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Django set field value after a form is initialized
...e after the form was submitted, you can use something like:
if form.is_valid():
form.cleaned_data['Email'] = GetEmailString()
Check the referenced docs above for more on using cleaned_data
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Replace a string in shell script using a variable
...anded for clarity from previous answers:
# create some variables
str="someFileName.foo"
find=".foo"
replace=".bar"
# notice the the str isn't prefixed with $
# this is just how this feature works :/
result=${str//$find/$replace}
echo $result
# result is: someFileName.bar
str="someFileName.s...
Are “while(true)” loops so bad? [closed]
...
or if you're convinced you know how long the longest line of text in your file is, you can do
#include <stdio.h>
char buffer[BUF_SIZE];
while (fgets(buffer, BUF_SIZE, stdin)) {
//do something with the line
}
If you're testing to see whether your user entered a quit command, it's easy to ...
Tri-state Check box in HTML?
...efines a property for checkboxes called indeterminate
See w3c reference guide. To make checkbox appear visually indeterminate set it to true:
element.indeterminate = true;
Here is Janus Troelsen's fiddle. Note, however, that:
The indeterminate state cannot be set in the HTML markup, it can onl...
How do I do redo (i.e. “undo undo”) in Vim?
... you just need to do
later 9999999d
(assuming that you first edited the file at most 9999999 days ago), or, if you remember the difference between current undo state and needed one, use Nh, Nm or Ns for hours, minutes and seconds respectively. + :later N<CR> <=> Ng+ and :later Nf for ...
Why use def main()? [duplicate]
... of foo.py
print __name__
if __name__ == '__main__':
print 'XXXX'
A file foo.py can be used in two ways.
imported in another file : import foo
In this case __name__ is foo, the code section does not get executed and does not print XXXX.
executed directly : python foo.py
...
How do I make a branch point at a specific commit? [duplicate]
...on the release branch." The workspace is maybe cluttered with half changed files that represent work-in-progress and we really don't want to touch and mess with. We'd just like git to flip a few pointers to keep track of the current state and put that release branch back how it should be.
Create a ...
Count occurrences of a char in a string using Bash
...
@HattrickNZ Then use: $(grep -o "$needle" < filename | wc -l)
– hek2mgl
Sep 11 '14 at 8:26
13
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How to set gradle home while importing existing project in Android studio
...ed/android-studio/gradle/gradle-x.y.z (x.y.z is the version, so check your filesystem for the exact path).
If you intend on doing gradle development outside Android Studio or want a different version, you can download it separately and point it at that path, but if you only want to get Android Stud...
JavaScript moving element in the DOM
...y, you'll need to use different selectors since the divs will retain their ids as they are moved around.
$(function() {
setInterval( function() {
$('div:first').insertAfter($('div').eq(2));
$('div').eq(1).insertBefore('div:first');
}, 3000 );
});
...