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Calling a base class's classmethod in Python
...asses, which derive from object. (at least in Python 2, but in Py3 I think all classes are new-style, IIRC) Otherwise you have to do Base.do(self, ...), I think, thereby hard-coding the name of the superclass.
– David Z
Jun 11 '14 at 19:29
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Draw line in UIView
...re are no errors - I wrote it without Xcode):
UIView *lineView = [[UIView alloc] initWithFrame:CGRectMake(0, 200, self.view.bounds.size.width, 1)];
lineView.backgroundColor = [UIColor blackColor];
[self.view addSubview:lineView];
[lineView release];
// You might also keep a reference to this view
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How to JSON serialize sets?
...s.
As shown in the json module docs, this conversion can be done automatically by a JSONEncoder and JSONDecoder, but then you would be giving up some other structure you might need (if you convert sets to a list, then you lose the ability to recover regular lists; if you convert sets to a dictionar...
target=“_blank” vs. target=“_new”
...or window when the user clicks on the link.
Using target="_new" is technically invalid according to the specifications, but as far as I know every browser will behave the same way:
it will search for a tab or window with the context name "_new"
if a "_new" tab/window is found, then the URL is loa...
Access an arbitrary element in a dictionary in Python
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for a non-destructive popitem you can make a (shallow) copy: key, value = dict(d).popitem()
– Pelle
Jan 31 '18 at 10:35
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List of special characters for SQL LIKE clause
What is the complete list of all special characters for a SQL (I'm interested in SQL Server but other's would be good too) LIKE clause?
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Calculating a directory's size using Python?
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This walks all sub-directories; summing file sizes:
import os
def get_size(start_path = '.'):
total_size = 0
for dirpath, dirnames, filenames in os.walk(start_path):
for f in filenames:
fp = os.path.join(di...
Rails :include vs. :joins
...de functionality was changed with Rails 2.1. Rails used to do the join in all cases, but for performance reasons it was changed to use multiple queries in some circumstances. This blog post by Fabio Akita has some good information on the change (see the section entitled "Optimized Eager Loading")....
Determine command line working directory when running node bin script
I am creating a node command line interface. It is installed globally and uses a bin file to execute.
5 Answers
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Mailto links do nothing in Chrome but work in Firefox?
...omputer. I know at work, it will run thunderbird; if they have outlook installed it may run outlook, etc. Personally, it did not run gmail by default, I had to set it up that way.
– kennypu
Jul 14 '13 at 1:55
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