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JavaScript file upload size validation
...ed by some modern browsers, the File API. It can be used for this purpose, and it's easy to test whether it's supported and fall back (if necessary) to another mechanism if it isn't.
Here's a complete example:
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-type" conte...
How does a “stack overflow” occur and how do you prevent it?
How does a stack overflow occur and what are the best ways to make sure it doesn't happen, or ways to prevent one, particularly on web servers, but other examples would be interesting as well?
...
In Python, how do I create a string of n characters in one line of code?
...e same letter 10 times:
string_val = "x" * 10 # gives you "xxxxxxxxxx"
And if you want something more complex, like n random lowercase letters, it's still only one line of code (not counting the import statements and defining n):
from random import choice
from string import ascii_lowercase
n = ...
Best way to remove an event handler in jQuery?
...nto the text box that this input-image is paired with, I setup an event handler for the input-image . Then when the user clicks the image , they get a little popup to add some notes to the data.
...
What is a void pointer in C++? [duplicate]
...ollowing:
It is dealing in unformatted memory. This is what operator new and malloc return: a pointer to a block of memory of a certain size. Since the memory does not have a type (because it does not have a properly constructed object in it yet), it is typeless. IE: void.
It is an opaque handle; ...
What does the keyword Set actually do in VBA?
... A VB object reference is not quite the same as a C pointer. And there is no equivalent of "&i" in VB.
– Tomalak
Dec 8 '08 at 14:02
10
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How do I determine k when using k-means clustering?
I've been studying about k-means clustering , and one thing that's not clear is how you choose the value of k. Is it just a matter of trial and error, or is there more to it?
...
Which icon sizes should my Windows application's icon include?
I have a Windows application which will run in Windows XP and newer (i.e. Vista/7). According to the Vista UI Guidelines , the standard sizes are 16x16, 32x32, 48x48, 256x256 (XP standard sizes do not include the 256x256 icon). In addition to those sizes, I also have 96x96 and 128x128 (and could cr...
html select option separator
...
The disabled option approach seems to look the best and be the best supported. I've also included an example of using the optgroup.
optgroup (this way kinda sucks):
<select>
<optgroup>
<option>First</option>
</optgroup>
...
Javascript trick for 'paste as plain text` in execCommand
I have a basic editor based on execCommand following the sample introduced here. There are three ways to paste text within the execCommand area:
...