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Why do people write the #!/usr/bin/env python shebang on the first line of a Python script?
It seems to me like the files run the same without that line.
21 Answers
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How to split a dos path into its components in Python
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I've been bitten loads of times by people writing their own path fiddling functions and getting it wrong. Spaces, slashes, backslashes, colons -- the possibilities for confusion are not endless, but mistakes are easily made anyway. So I'm a stickler...
Which is more efficient, a for-each loop, or an iterator?
...does depend on the underlying structure. And as a side note, iterating HashSets is also very expensive (much more than an Array List), so avoid those like the plague (if you can).
– Leo
Sep 26 '14 at 11:42
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How do I find the length of an array?
Is there a way to find how many values an array has? Detecting whether or not I've reached the end of an array would also work.
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What is the best method of handling currency/money?
I'm working on a very basic shopping cart system.
13 Answers
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How do I select an entire row which has the largest ID in the table?
...ign key, in which case it may not be unique. I did some benchmarking using set profiling = 1; ...; show profiles and it appears our solutions have the same performance using MySQL. For my own knowledge, do you know what DBMS has poorer performance for subselects?
– unutbu
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How to convert int to NSString?
...atter. This will add thousands separators, and will honor the localization settings for the user:
NSInteger n = 10000;
NSNumberFormatter *formatter = [[NSNumberFormatter alloc] init];
formatter.numberStyle = NSNumberFormatterDecimalStyle;
NSString *string = [formatter stringFromNumber:@(n)];
In t...
Automatic Preferred Max Layout Width is not available on iOS versions prior to 8.0
...te 3:
This warning can also be triggered by labels that have numberOfLines set to anything but 1 if your deployment target is set to 7.1. This is completely reproducible with new single-view project.
Steps to Reproduce:
Create a new single-view, objective-c project
Set the Deployment Target to 7...
How to compile a 32-bit binary on a 64-bit linux machine with gcc/cmake
...create a 32 bit target - it would just add -m32 to the CFLAGS, probably by setting CMAKE_REQUIRED_FLAGS.
– caf
Aug 13 '09 at 22:55
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Is there a command line utility for rendering GitHub flavored Markdown?
I'm wondering if there is a command line utility for taking a GitHub flavored Markdown file and rendering it to HTML.
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