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Step-by-step debugging with IPython
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You can use IPython's %pdb magic. Just call %pdb in IPython and when an error occurs, you're automatically dropped to ipdb. While you don't have the stepping immediately, you're in ipdb afterwards.
This makes debugging individual functions easy, as you can just lo...
How to edit log message already committed in Subversion?
...way to edit the log message of a certain revision in Subversion? I accidentally wrote the wrong filename in my commit message which could be confusing later.
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What are the differences between Abstract Factory and Factory design patterns?
...le the desired object
instantiation.
The quote assumes that an object is calling its own factory method here. Therefore the only thing that could change the return value would be a subclass.
The abstract factory is an object that has multiple factory methods on it. Looking at the first half of your...
What is the best Distributed Brute Force countermeasure?
...so far I'm winning (so to speak). But I've run into a pretty non-trivial challenge (one that most auth libraries miss entirely, but I insist on handling it properly): how to deal intelligently with large-scale, distributed, variable-username brute-force attacks .
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How to initialize log4j properly?
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Log4j by default looks for a file called log4j.properties or log4j.xml on the classpath.
You can control which file it uses to initialize itself by setting system properties as described here (Look for the "Default Initialization Procedure" section).
For ex...
Adding the “Clear” Button to an iPhone UITextField
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func clear_btn(box_is : UITextField){
box_is.clearButtonMode = .always
if let clearButton = box_is.value(forKey: "_clearButton") as? UIButton {
let templateImage = clearButton.imageView?.image?.withRenderingMode(.alway...
What resources exist for Database performance-tuning? [closed]
...tabase, this guide may also help.
http://download.oracle.com/docs/cd/B28359_01/server.111/b28274/toc.htm
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Split string, convert ToList() in one line
...ers
.Split(',')
.Where(x => int.TryParse(x, out _))
.Select(int.Parse)
.ToList();
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How to select label for=“XYZ” in CSS?
... or some other structural way), sadly.
(I'm assuming that the template {t _your_email} will fill in a field with id="email". If not, use a class instead.)
Note that if the value of the attribute you're selecting doesn't fit the rules for a CSS identifier (for instance, if it has spaces or brackets...
How to remove not null constraint in sql server using query
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or you can do : alter table table_name modify column_name type(30) NULL. 30 being the size of your column type, example: varchar(30)
– nr5
Sep 19 '12 at 18:11
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