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How can I get the button that caused the submit from the form submit event?
...document.activeElement);
if (
/* there is an activeElement at all */
$btn.length &&
/* it's a child of the form */
$form.has($btn) &&
/* it's really a submit element */
$btn.is('button[type="submit"], input[type="submit"], input...
No Main() in WPF?
...
The Main() method is created automatically.
If you want to provide your own you have to (tested in VS2013 and VS2017):
Right-click App.xaml in the solution explorer, select Properties
Change 'Build Action' to 'Page' (initial value is 'ApplicationDefinition')
...
Overlaying histograms with ggplot2 in R
...istogram(alpha = 0.2)
is telling ggplot to construct one histogram using all the values in f0 and then color the bars of this single histogram according to the variable utt.
What you want instead is to create three separate histograms, with alpha blending so that they are visible through each oth...
MySQL DISTINCT on a GROUP_CONCAT()
...d Jun 21 '10 at 9:47
Daniel Vassallo
301k6666 gold badges475475 silver badges424424 bronze badges
answered Jun 21 '10 at 9:41
...
Android: Create spinner programmatically from array
I'm all new to Android and I'm trying to create a spinner programmatically and feeding it with data from an array, but Eclipse gives me a warning that I can't handle.
...
What's the difference between fill_parent and wrap_content?
... value:
android:layout_width="100dp"
android:layout_height="200dp"
Generally that is not as good, though, because it is not as flexible for different sized devices. After you have understood wrap_content and match_parent, the next thing to learn is layout_weight.
See also
What does android:lay...
Emulating a do-while loop in Bash
...ing different, only that true is not a built-in in Bash. It's a program usually found in /bin.
– Fleshgrinder
Feb 12 at 22:07
1
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File content into unix variable with newlines
...
The assignment does not remove the newline characters, it's actually the echo doing this. You need simply put quotes around the string to maintain those newlines:
echo "$testvar"
This wil give the result you want. See the following transcript for a demo:
pax> cat num1.txt ; x=$(cat...
Why is conversion from string constant to 'char*' valid in C but invalid in C++
....
As of C++11, the implicit conversion that had been deprecated was officially removed, so code that depends on it (like your first example) should no longer compile.
You've noted one way to allow the code to compile: although the implicit conversion has been removed, an explicit conversion still ...
Is there a way of having git show lines added, lines changed and lines removed?
...
If all of your files are staged for commit, to see the --numstat go like this:
git diff --numstat HEAD~
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