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What is the most efficient way to create a dictionary of two pandas Dataframe columns?
... comparion (using Wouter's method)
In [6]: df = pd.DataFrame(randint(0,10,10000).reshape(5000,2),columns=list('AB'))
In [7]: %timeit dict(zip(df.A,df.B))
1000 loops, best of 3: 1.27 ms per loop
In [8]: %timeit pd.Series(df.A.values,index=df.B).to_dict()
1000 loops, best of 3: 987 us per loop
...
jQuery document.createElement equivalent?
...benchmark, and here are roughly the results of repeating the above options 100,000 times:
jQuery 1.4, 1.5, 1.6
Chrome 11 Firefox 4 IE9
<div> 440ms 640ms 460ms
<div></div> 420ms 650ms 480ms
createElement 100ms 180ms 300m...
How to input a regex in string.replace?
...gt; and then there are cases ... where the<[99> number ranges from 1-100</[99>.
and there are many other lines in the txt files
with<[3> such tags </[3>"""
result = pattern.sub("", subject)
print(result)
If you want to learn more about regex I recomend to read Regular Ex...
Difference between “process.stdout.write” and “console.log” in node.js?
...
TK-421TK-421
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How do I calculate tables size in Oracle
...m(bytes)/1024/1024) Meg,
ROUND( ratio_to_report( sum(bytes) ) over () * 100) Percent
FROM
(SELECT segment_name table_name, owner, bytes
FROM dba_segments
WHERE segment_type IN ('TABLE', 'TABLE PARTITION', 'TABLE SUBPARTITION')
UNION ALL
SELECT i.table_name, i.owner, s.bytes
FROM dba_indexes ...
When to use std::forward to forward arguments?
...SBKerrek SB
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Python 3.x rounding behavior
...l('1') to quantize(decimal.Decimal('0.00') if you want to round to nearest 100s such as for money.
– Igor
Feb 1 '17 at 18:14
...
Why doesn't GCC optimize a*a*a*a*a*a to (a*a*a)*(a*a*a)?
... the obvious answer is to precompute it once (Knuth provides a table up to 100) and use that hardcoded table (that's what gcc does internally for powi).
– Marc Glisse
Jan 31 '13 at 19:11
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How much does it cost to develop an iPhone application? [closed]
...
1007
votes
I'm one of the developers for Twitterrific and to be honest, I can't tell ...
Storing Data in MySQL as JSON
... who spends way too much time on stack exchange? When I have a record with 100 fields that I want to store and I only need to search on 3 or 4 of the fields, creating a table with 100 fields is nonsensical. You can store a customer record with his entire address book stored in 1 field in JSON, and j...