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Regex lookahead for 'not followed by' in grep
...more powerful tool than the standard grep. You need a PCRE-enabled grep.
If you have GNU grep, the current version supports options -P or --perl-regexp and you can then use the regex you wanted.
If you don't have (a sufficiently recent version of) GNU grep, then consider getting ack.
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Disabled form inputs do not appear in the request
....2 in the HTML 4 spec:
Read-only elements receive focus but cannot be modified by the user.
Read-only elements are included in tabbing navigation.
Read-only elements are successfully posted.
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How to display loading message when an iFrame is loading?
I have an iframe that loads a third party website which is extremely slow to load.
9 Answers
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Find where python is installed (if it isn't default dir)
Python is on my machine, I just don't know where, if I type python in terminal it will open Python 2.6.4, this isn't in it's default directory, there surely is a way of finding it's install location from here?
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Why use a READ UNCOMMITTED isolation level?
... the theory is scary. But
here's what I think: "In theory there
is no difference between theory and
practice. In practice there is."
I would never recommend using nolock
as a general "good for what ails you"
snake oil fix for any database
deadlocking problems you may have. You
sho...
Why would one omit the close tag?
...you are implementing some kind payment gateway, and redirect user to a specific URL after successful confirmation by the payment processor. If some kind of PHP error, even a warning, or an excess line ending happens, the payment may remain unprocessed and the user may still seem unbilled. This is al...
Can I serve multiple clients using just Flask app.run() as standalone?
...tly pass threaded=True to enable this behaviour.
For example, you can do
if __name__ == '__main__':
app.run(threaded=True)
to handle multiple clients using threads in a way compatible with old Flask versions, or
if __name__ == '__main__':
app.run(threaded=False, processes=3)
to tell W...
How to convert an object to a byte array in C#
...r code and send to it the object that you need to convert to a byte array. If you need convert the byte array to an object again you can use the function below:
// Convert a byte array to an Object
public static Object ByteArrayToObject(byte[] arrBytes)
{
using (var memStream = new MemoryStream...
What is the best JavaScript code to create an img element
... old versions of KHTML don't create a proper DOM Node with new Image(), so if you want to be fully backwards compatible use something like:
// IEWIN boolean previously sniffed through eg. conditional comments
function img_create(src, alt, title) {
var img = IEWIN ? new Image() : document.creat...
When to use std::begin and std::end instead of container specific versions [duplicate]
Are there any general preferences or rules that explain when container specific versions of begin and end should be used instead of free functions std::begin and std::end ?
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