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What exactly do “IB” and “UB” mean?
...ur code less portable.
UB: Undefined Behaviour. The standard does not specify how a program invoking undefined behaviour should behave. Also known as "nasal demons" because theoretically it could make demons fly out of your nose.
Using undefined behaviour is nearly always a bad idea. Even if it se...
PHP - Move a file into a different folder on the server
...ebsite to delete their images off the server after they have uploaded them if they no longer want them. I was previously using the unlink function in PHP but have since been told that this can be quite risky and a security issue. (Previous code below:)
...
Value Change Listener to JTextField
...sertUpdate(DocumentEvent e) {
warn();
}
public void warn() {
if (Integer.parseInt(textField.getText())<=0){
JOptionPane.showMessageDialog(null,
"Error: Please enter number bigger than 0", "Error Message",
JOptionPane.ERROR_MESSAGE);
}
}
});
...
How should strace be used?
...ant to be bothered to really go through it.
Also, useful for your own code if you don't feel like opening up GDB, but are just interested in understanding external interaction.
A good little introduction
I ran into this intro to strace use just the other day: strace hello world
...
Replace console output in Python
I'm wondering how I could create one of those nifty console counters in Python as in certain C/C++-programs.
10 Answers
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Is there a way to ignore header lines in a UNIX sort?
...te a subshell, wrapping up the stdout so you can pipe it or redirect it as if it had come from a single command.
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How can I find the first occurrence of a sub-string in a python string?
So if my string is "the dude is a cool dude".
I'd like to find the first index of 'dude':
5 Answers
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How to hide Bootstrap modal with javascript?
... window, use the browser's console to try
$('#myModal').modal('hide');
If it works (and the modal closes) then you know that your close Javascript is not being sent from the server to the browser correctly.
If it doesn't work then you need to investigate further on the client what is happening....
Is there documentation for the Rails column types?
...pending on DBMS)
Use for comments, blog posts, etc. General rule of thumb: if it's captured via textarea, use Text. For input using textfields, use string.
Integer:
Whole numbers
Float:
Decimal numbers stored with floating point precision
Precision is fixed, which can be problematic for some c...
How can I select item with class within a DIV?
... @czupe: no, while the context-selector approach is written differently jQuery implements, internally, the same $('#mydiv').find('.myclass'); approach as used in the first code snippet. Incidentally: '...select every id=mydiv'? There should only ever be one use of a given id in a page ...