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How to get the raw value an field?
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Track all pressed keys based on their key codes
I suppose one could listen to the keyup events and keep an array of all characters entered, based on their keycodes. But it's a pretty tedious task and probably prone to bugs.
http://unixpapa.com/js...
sqlalchemy IS NOT NULL select
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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to_string is not a member of std, says g++ (mingw)
...t a patch to make it work with MinGW.
This issue has been fixed in MinGW-w64 distros higher than GCC 4.8.0 provided by the MinGW-w64 project. Despite the name, the project provides toolchains for 32-bit along with 64-bit. The Nuwen MinGW distro also solves this issue.
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Using two values for one switch case statement
...pression. The following code example, ,
displays the number of the month based on the value of the String
named month:
public class StringSwitchDemo {
public static int getMonthNumber(String month) {
int monthNumber = 0;
if (month == null) {
return monthNumbe...
Get selected value in dropdown list using JavaScript
...ect fields using JavaScript.
Source Link
Working Javascript & jQuery Demo
<select id="Ultra" onchange="run()"> <!--Call run() function-->
<option value="0">Select</option>
<option value="8">text1</option>
<option value="5">text2&l...
Checking if a string can be converted to float in Python
...f you cared about performance (and I'm not suggesting you should), the try-based approach is the clear winner (compared with your partition-based approach or the regexp approach), as long as you don't expect a lot of invalid strings, in which case it's potentially slower (presumably due to the cost ...
Resetting generator object in Python
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Hank Gay
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answered Aug 13 '09 at 11:18
nosklonosk...
Adding git branch on the Bash command prompt
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164
git 1.9.3 or later: use __git_ps1
Git provides a shell script called git-prompt.sh, which incl...
Python (and Python C API): __new__ versus __init__
...xample that would hopefully make the difference clear:
a = Shape(sides=3, base=2, height=12)
b = Shape(sides=4, length=2)
print(a.area())
print(b.area())
# I want `a` and `b` to be an instances of either of 'Square' or 'Triangle'
# depending on number of sides and also the `.area()` method to do t...
PostgreSQL error: Fatal: role “username” does not exist
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Use the operating system user postgres to create your database - as long as you haven't set up a database role with the necessary privileges that corresponds to your operating system user of the same name (h9uest in your case):
sudo -u postgres -i
As recommended here or here.
Th...