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What is the significance of load factor in HashMap?
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The documentation explains it pretty well:
An instance of HashMap has two parameters that affec...
How can I check whether a numpy array is empty or not?
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You can always take a look at the .size attribute. It is defined as an integer, and is zero (0)...
Alternate output format for psql
I am using PostgreSQL 8.4 on Ubuntu. I have a table with columns c1 through cN . The columns are wide enough that selecting all columns causes a row of query results to wrap multiple times. Consequently, the output is hard to read.
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What is the difference between a generative and a discriminative algorithm?
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13 Answers
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Is there a short cut for going back to the beginning of a file by vi editor?
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After opening a file using vi
1) You can press Shift + g to go the end of the file
and
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What's the difference between ASCII and Unicode?
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ASCII defines 128 characters, which map to the numbers 0–127. Unicode defines (less than) 221 characters, which, similarly, map to numbers 0–221 (though not all numbers are currently assigned, and some are reserved).
Unicode is a supe...
Performing Breadth First Search recursively
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setState vs replaceState in React.js
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With setState the current and previous states are merged. With replaceState, it throws out th...
Django Forms: if not valid, show form with error message
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edited Apr 15 at 14:19
melwil
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Getting the name of the currently executing method
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Thread.currentThread().getStackTrace() will usually contain the method you’re calling it fro...