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What's the difference between getPath(), getAbsolutePath(), and getCanonicalPath() in Java?
... It's not a canonical path.
A canonical path is always an absolute path.
Converting from a path to a canonical path makes it absolute (usually tack on the current working directory so e.g. ./file.txt becomes c:/temp/file.txt). The canonical path of a file just "purifies" the path, removing and re...
Google Maps V3 - How to calculate the zoom level for a given bounds
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How can this be right if it doesn't take latitude into account? Near the equator it should be fine but the scale of the map at a given zoom level changes depending on the latitude!
– Eyal
May 17 '12 at 8:19
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Change values while iterating
...variable is present)
array or slice a [n]E, *[n]E, or []E index i int a[i] E
So, range uses a[i] as its second value for arrays/slices, which effectively means that the
value is copied, making the original value untouchable.
This behavior is demonstrated by the following cod...
Lazy Method for Reading Big File in Python?
...ne by line was not an option, but I still needed to process it row by row.
Converting'|' to '\n' before processing was also out of the question, because some of the fields of this csv contained '\n' (free text user input).
Using the csv library was also ruled out because the fact that, at least in e...
Delaying AngularJS route change until model loaded to prevent flicker
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Could someone help me convert this answer to the app.controller('MyCtrl') format? jsfiddle.net/5usya/1 didn't work for me.
– user1071182
Apr 15 '13 at 3:03
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Add unique constraint to combination of two columns
I have a table and, somehow, the same person got into my Person table twice. Right now, the primary key is just an autonumber but there are two other fields that exist that I want to force to be unique.
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add a string prefix to each value in a string column using Pandas
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If you load you table file with dtype=str
or convert column type to string df['a'] = df['a'].astype(str)
then you can use such approach:
df['a']= 'col' + df['a'].str[:]
This approach allows prepend, append, and subset string of df.
Works on Pandas v0.23.4, v0.24.1. ...
error: Unable to find vcvarsall.bat
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You can also wheel convert ....exe these installers and then install them with pip whenever you like.
– Zooba
Sep 29 '14 at 22:27
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WaitAll vs WhenAll
...is an overstatement, and it's important to understand how async operations interact with threads.
– Jon Skeet
Jan 18 '15 at 11:47
7
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Python progression path - From apprentice to guru
...nd challenging. An URL shortener? Sure, I can do that. Oh, I learnt how to convert numbers from one base to another as a side effect!
This is valid whatever your skill level. You never stop learning. By actively coding in your spare time you will, with little additional effort, come to understand t...