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What is the difference between map and flatMap and a good use case for each?
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KeyValuePair VS DictionaryEntry
...enerical?
– Mauro Sampietro
Nov 30 '16 at 16:28
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What are the Ruby File.open modes and options?
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edited Apr 23 '16 at 21:46
Casimir et Hippolyte
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How to comment out a block of Python code in Vim
...ng).
– Rishabh Manocha
Apr 1 '10 at 16:14
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@rishabh-manocha: use visual block (Ctrl-V) to selec...
Check/Uncheck checkbox with JavaScript (jQuery or vanilla)?
... use attr or prop ?
– Black
Aug 30 '16 at 7:31
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Apparently .checked = true/false doesn't trigge...
How to create full compressed tar file using Python?
...ient).
– Brōtsyorfuzthrāx
Jan 30 '16 at 6:50
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Easily measure elapsed time
...e the answer
– Ferenc Dajka
Oct 25 '16 at 13:17
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To run this you have to add the #include <c...
converting double to integer in java
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– Nelda.techspiress
May 11 '17 at 15:16
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SQLAlchemy: how to filter date field?
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answered Jan 17 '12 at 16:54
vanvan
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How to encrypt/decrypt data in php?
...for this post we will be using AES-256-CBC which has a fixed block size of 16 bytes and a key size of either 16, 24 or 32 bytes.
Encryption key
A good encryption key is a binary blob that's generated from a reliable random number generator. The following example would be recommended (>= 5.3):
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