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How to use a custom comparison function in Python 3?
...cipe give me a workaround, but I think I am going to lose some performance by passing all the comparison operators < > = to middle man, since my original custom sort is written in C , it had around 1/2x speed of default sort.
– YOU
Mar 28 '10 at 5:26
...
How does the vim “write with sudo” trick work?
...cified file(s) and also sends it to standard output, which can be captured by the next piped command.
For example, in ps -ax | tee processes.txt | grep 'foo', the list of processes will be written to a text file and passed along to grep.
+-----------+ tee +------------+
| ...
CSS performance relative to translateZ(0)
... the performance gain in 'tricking' the GPU to think that an element is 3D by using transform: translateZ(0) to speed up animations and transitions. I was wondering if there are implications to using this transform in the following manner:
...
How can I make a UITextField move up when the keyboard is present - on starting to edit?
...not needed.)
The standard way to prevent the TextFields from being covered by the keyboard is to move the view up/down whenever the keyboard is shown.
Here is some sample code:
#define kOFFSET_FOR_KEYBOARD 80.0
-(void)keyboardWillShow {
// Animate the current view out of the way
if (self...
What can I do to resolve a “Row not found or changed” Exception in LINQ to SQL on a SQL Server Compa
...ining "WHERE [title] IS NULL", to make sure the title has not been changed by someone else.
LINQ looks up the properties of
[title] in the mapping.
LINQ will find [title] NOT NULLable.
Since [title] is NOT NULLable, by
logic it never could be NULL!
So, optimizing the query, LINQ
replaces it with "wh...
Multiple glibc libraries on a single host
...es child processes, the value of LD_LIBRARY_PATH will usually be inherited by them, but if they're not also compiled to use the newer glibc (for example, if they're stock binaries like bash), they won't launch.
– HighCommander4
Jun 5 '16 at 2:22
...
Flatten nested dictionaries, compressing keys
...n a nested list, you just have to do the extra work for iterating the dict by key/value, creating new keys for your new dictionary and creating the dictionary at final step.
import collections
def flatten(d, parent_key='', sep='_'):
items = []
for k, v in d.items():
new_key = paren...
Map Tiling Algorithm
...ow, looking at one edge tile we can determine which way the boundary turns by looking at its four closest neighbour tiles. Marking an edge tile with X just as above we have the following six different cases.
These cases are used to determine the corresponding smoothing tile and we can number the ...
Algorithm for creating a school timetable
...pressed and implied: will be satisfied fully. Therefore we help ourselves by:
Defining and ranking all known constraints
Reducing the problem space, by manually, providing a set of additional constraints.This may seem counter-intuitive but for example by providing an initial, partially filled sch...
How to set a value of a variable inside a template code?
...s a regular expression to parse tag contents.
try:
# Splitting by None == splitting by spaces.
tag_name, arg = token.contents.split(None, 1)
except ValueError:
raise template.TemplateSyntaxError, "%r tag requires arguments" % token.contents.split()[0]
m = re.searc...