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Is there shorthand for returning a default value if None in Python? [duplicate]
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123
return "default" if x is None else x
try the above.
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Changing column names of a data frame
...k it was asked for data.frame, not data.table
– Helix123
Apr 16 '15 at 19:15
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What is more efficient: Dictionary TryGetValue or ContainsKey+Item?
...tual entry location. The Item property actually has nearly identical code functionality as TryGetValue, except that it will throw an exception instead of returning false.
Using ContainsKey followed by the Item basically duplicates the lookup functionality, which is the bulk of the computation in t...
Fragment lifecycle - which method is called upon show / hide?
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Similar to activity lifecycle, Android calls onStart() when fragment becomes visible. onStop()...
Android Studio - How to Change Android SDK Path
...atforms etc under C:\android-sdk)
5. Click OK to save changes
6. Have fun!
Following steps were for older versions(<1.0) of Android Studio
4. In the middle column Click on Android SDK (with Android icon) OR click + on the top if you don't see an entry with Android icon.
5. Change SDK Ho...
How to suppress scientific notation when printing float values?
...s really what you want? I don't: >>> print('{:f}'.format(0.000000123)) 0.000000
– duality_
May 22 '18 at 10:06
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Java: parse int value from a char
...n be converted into int(0 to 9), e.g., '5'-'0' gives int 5.
String str = "123";
int a=str.charAt(1)-'0';
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What are the differences between virtual memory and physical memory?
...l memory address. Imagine software had spat out an address of 45 with data 123, and OS had stored it in location 2012 and created an entry in the map, mapping 45 to 2012. If the software is now moved in memory, what used to be at location 2012 will no longer be at 2012, but in a new location, and OS...
In Perl, how can I read an entire file into a string?
...ed at once. It's just not a scalable solution. You might also find it more fun to use the standard Tie::File module, or the DB_File module's $DB_RECNO bindings, which allow you to tie an array to a file so that accessing an element the array actually accesses the corresponding line in the file.
You...
Find nearest latitude/longitude with an SQL query
...ING distance < 29 and distance > 28
ORDER BY distance LIMIT 0, 20;
https://developers.google.com/maps/articles/phpsqlsearch_v3#creating-the-map
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