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Using LIMIT within GROUP BY to get N results per group?
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Reference: mod_rewrite, URL rewriting and “pretty links” explained
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To understand what mod_rewrite does you first need to understand how a web server works. A web...
jquery live hover
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jQuery 1.4.1 now supports "hover" for live() events, but only with one event handler function:
$("table tr").live("hover",
function () {
});
Alternatively, you can provide two functions, one for mouseenter and one for mouseleav...
Is there an opposite of include? for Ruby Arrays?
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Evenly space multiple views within a container view
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So my approach allows you to do this in interface builder. What you do is create 'spacer views'...
Are there pronounceable names for common Haskell operators? [closed]
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Here is how I pronounce them:
>>= bind
>> then
*> then
-> ...
Find column whose name contains a specific string
...list of column names that match:
import pandas as pd
data = {'spike-2': [1,2,3], 'hey spke': [4,5,6], 'spiked-in': [7,8,9], 'no': [10,11,12]}
df = pd.DataFrame(data)
spike_cols = [col for col in df.columns if 'spike' in col]
print(list(df.columns))
print(spike_cols)
Output:
['hey spke', 'no', ...
How to compare strings ignoring the case
...or casecmp. It returns 0 if two strings are equal, case-insensitively.
str1.casecmp(str2) == 0
"Apple".casecmp("APPLE") == 0
#=> true
Alternatively, you can convert both strings to lower case (str.downcase) and compare for equality.
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image processing to improve tesseract OCR accuracy
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