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Fundamental difference between Hashing and Encryption algorithms
...ed length (or smaller length) output. It can be anything from a simple crc32, to a full blown cryptographic hash function such as MD5 or SHA1/2/256/512. The point is that there's a one-way mapping going on. It's always a many:1 mapping (meaning there will always be collisions) since every functio...
Pointer to pointer clarification
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Forget for a second about the pointing analogy. What a pointer really contains is a memory addr...
How to check if a char is equal to an empty space?
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Nikita RybakNikita Rybak
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List all environment variables from the command line
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1381
Just do:
SET
You can also do SET prefix to see all variables with names starting with prefi...
Where and why do I have to put the “template” and “typename” keywords?
... type, it will be a multiplication. So the C++ Standard says at paragraph (3/7):
Some names denote types or templates. In general, whenever a name is encountered it is necessary to determine whether that name denotes one of these entities before continuing to parse the program that contains it. ...
How do you change the datatype of a column in SQL Server?
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573
ALTER TABLE TableName
ALTER COLUMN ColumnName NVARCHAR(200) [NULL | NOT NULL]
EDIT
As noted N...
Should functions return null or an empty object?
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Why in C++ do we use DWORD rather than unsigned int? [duplicate]
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edited May 23 '17 at 12:02
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answered Jun 8 '10 at 6:46
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How to pinch out in iOS simulator when map view is only a portion of the screen?
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You can move the two gray circles that represent your fingers around the screen by holding Optio...
How can I monitor the thread count of a process on linux?
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I believe you should subtract 1 from it because it prints a line like USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMA...