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How to raise a ValueError?
...trates how to raise a ValueError the way you want. By-the-way, I think find_last(), find_last_index(), or something simlar would be a more descriptive name for this function. Adding to the possible confusion is the fact that Python already has a container object method named __contains__() that does...
What is the $? (dollar question mark) variable in shell scripting? [duplicate]
...al Parameters" http://pubs.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html#tag_18_05_02 :
? Expands to the decimal exit status of the most recent pipeline (see Pipelines).
man bash "Special Parameters":
The shell treats several parameters specially. These parameters may only be refe...
Ruby: Easiest Way to Filter Hash Keys?
...with just the choices in it.
choices = params.select { |key, value| key.to_s.match(/^choice\d+/) }
or you can use delete_if and modify the existing Hash e.g.
params.delete_if { |key, value| !key.to_s.match(/choice\d+/) }
or if it is just the keys and not the values you want then you can do:
p...
How to install both Python 2.x and Python 3.x in Windows
...I need to use the Python Imaging Library (PIL), ImageMagick, and wxPython, all of which require Python 2.x.
18 Answers
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C# Entity-Framework: How can I combine a .Find and .Include on a Model Object?
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I would really recommend using the latter (SingleOrDefault), ToList will retrieve all entries first and then select one
– Sander Rijken
Sep 8 '11 at 13:51
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Get file size, image width and height before upload
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when the value of i is alerted in the callback function reader.onload it shows a random increment! e.g. for 4 files the value as alerted was 0 3 2 1 . Can any one explain that?
– freerunner
Mar 2 '14 at 11:16
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What is the difference between log4net and ELMAH?
...,error) with log4net but store it in ELMAH nuget.org/packages/elmahappender_log4net_1.2.10
– Sturla
Feb 18 '14 at 16:21
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Draw in Canvas by finger, Android
...ur onDraw() you draw the paths using the paint of your choice. You should call invalidate() to refresh the view.
To choose options you can click menu and choose the options.
The below can be used as a reference. You can modify the below according to your needs.
public class FingerPaintActivity ex...
UITableView - change section header color
...lor:[UIColor clearColor]];
return headerView;
}
Swift:
func tableView(_ tableView: UITableView!, viewForHeaderInSection section: Int) -> UIView!
{
let headerView = UIView(frame: CGRect(x: 0, y: 0, width: tableView.bounds.size.width, height: 30))
if (section == integerRepresentingYourSect...
URL-parameters and logic in Django class-based views (TemplateView)
...re using a TemplateView which means that you would do the logic in your get_context_data override.
– Ngenator
Apr 2 '13 at 12:58
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