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Why is semicolon allowed in this python snippet?
...needs this semi-colon thing, but somebody thought it would be nice to have and added it to the language.
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Best practices for catching and re-throwing .NET exceptions
What are the best practices to consider when catching exceptions and re-throwing them? I want to make sure that the Exception object's InnerException and stack trace are preserved. Is there a difference between the following code blocks in the way they handle this?
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how to implement a pop up dialog box in iOS
... say display a custom UI in your UIAlertView, you can subclass UIAlertView and put in custom UI components in the init method. If you want to respond to a button press after a UIAlertView appears, you can set the delegate above and implement the - (void)alertView:(UIAlertView *)alertView clickedButt...
What is Virtual DOM?
.... It uses a concept called "the Virtual DOM," which I didn't really understand.
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How to vertically center content with variable height within a div?
...ll. Also, I would love a solution with no, or very little use of CSS hacks and/or non-semantic markup.
9 Answers
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How do I enable EF migrations for multiple contexts to separate databases?
...ecause the Configuration.cs file already exists. If you rename that class and file, you should be able to run that 2nd Enable-Migrations, which will create another Configuration.cs.
You will then need to specify which configuration you want to use when updating the databases.
Update-Database -Con...
Is std::vector so much slower than plain arrays?
...d::vector is "implemented as an array," blah blah blah. Today I went down and tested it, and it seems to be not so:
22 Ans...
How can I test a Windows DLL file to determine if it is 32 bit or 64 bit? [duplicate]
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Gory details
A DLL uses the PE executable format, and it's not too tricky to read that information out of the file.
See this MSDN article on the PE File Format for an overview. You need to read the MS-DOS header, then read the IMAGE_NT_HEADERS structure. This contains the I...
How can I time a code segment for testing performance with Pythons timeit?
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You can use time.time() or time.clock() before and after the block you want to time.
import time
t0 = time.time()
code_block
t1 = time.time()
total = t1-t0
This method is not as exact as timeit (it does not average several runs) but it is straightforward.
time.time...
Change / Add syntax highlighting for a language in Sublime 2/3
.... For example, the JavaScript.tmLanguage file assigns the scopes source.js and variable.language.js to the this keyword. Since Sublime Text 3 is using the .sublime-package zip file format to store all the default settings it's not very straightforward to edit the individual files.
Unfortunately, no...