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What's the u prefix in a Python string?
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That was a fun read! Thanks! Article is 17 years old and it's still accurate. Wow.
– Kerwin Sneijders
Feb 28 at 11:08
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Use of alloc init instead of new
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Very old question, but I've written some example just for fun — maybe you'll find it useful ;)
#import "InitAllocNewTest.h"
@implementation InitAllocNewTest
+(id)alloc{
NSLog(@"Allocating...");
return [super alloc];
}
-(id)init{
NSLog(@"Initializing...");
retur...
Why does overflow:hidden not work in a ?
...n:relative and negative margin should do the trick!
Here is a screenshot:
https://flic.kr/p/nvRs4j
<body>
<!-- SOME CSS -->
<style>
.cropped-table-cells,
.cropped-table-cells tr td {
margin:0px;
padding:0px;
border-collapse:collapse;
}
.cr...
rreplace - How to replace the last occurrence of an expression in a string?
... = s.rsplit(old, occurrence)
... return new.join(li)
...
>>> s
'1232425'
>>> rreplace(s, '2', ' ', 2)
'123 4 5'
>>> rreplace(s, '2', ' ', 3)
'1 3 4 5'
>>> rreplace(s, '2', ' ', 4)
'1 3 4 5'
>>> rreplace(s, '2', ' ', 0)
'1232425'
...
How to copy a collection from one database to another in MongoDB
....
You could do something like:
db.<collection_name>.find().forEach(function(d){ db.getSiblingDB('<new_database>')['<collection_name>'].insert(d); });
Please note that with this, the two databases would need to share the same mongod for this to work.
Besides this, you can do a...
Are +0 and -0 the same?
... Actually, this behavior models limit calculation in math. For example function 1/x has a value infinity in 0, however, it is separated if we are approaching 0 from the positive of negative side; in the former, the result is +inf, in the latter, -inf.
– Agoston Horvath
...
Weighted random numbers
..., you remove it, you will probably want a custom algorithm.
Will's answer https://stackoverflow.com/a/1761646/837451 avoids this overhead but will be slower to draw from than the C++11 because it can't use binary search.
To see that it does this, you can see the relevant lines (/usr/include/c++/5...
How to set the matplotlib figure default size in ipython notebook?
...
123
I believe the following work in version 0.11 and above. To check the version:
$ ipython --ver...
Suppress warning messages using mysql from within Terminal, but password written in bash script
... edited Aug 4 at 7:44
coding is fun
35677 silver badges1515 bronze badges
answered Apr 8 '14 at 9:34
David Goo...
Is there a Python Library that contains a list of all the ascii characters?
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If you want all printable characters:
>>> string.printable
'0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ!"#$%&\'()*+,-./:;?@[\\]^_`{|}~ \t\n\r\x0b\x0c'
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