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How is a CRC32 checksum calculated?
... Polynomial of (W)idth 4 : 10011
Message after appending W zeros : 11010110110000
Now we divide the augmented Message by the Poly using CRC arithmetic. This is the same division as before:
1100001010 = Quotient (nobody cares about the quotient)
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Which is faster/best? SELECT * or SELECT column1, colum2, column3, etc
...pecially if the SQL is in a stored procedure.
– Eric Z Beard
Sep 15 '08 at 23:22
4
While what Jon...
How do negative margins in CSS work and why is (margin-top:-5 != margin-bottom:5)?
....o.v.
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Can you do this HTML layout without using tables?
...BrandtGregor Brandt
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A proper wrapper for console.log with correct line number?
...telix
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What is the exact problem with multiple inheritance?
...s A:
at offset 0 ... "abc" ... 4 byte int field
at offset 4 ... "xyz" ... 8 byte double field
at offset 12 ... "speak" ... 4 byte function pointer
class B:
at offset 0 ... "foo" ... 2 byte short field
at offset 2 ... 2 bytes of alignment padding
at offset 4 ... "bar" ... 4 b...
Detecting 'stealth' web-crawlers
...man
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Sort Go map values by keys
... be the same from one iteration
to the next. Since Go 1 the runtime randomizes map iteration order, as
programmers relied on the stable iteration order of the previous
implementation. If you require a stable iteration order you must
maintain a separate data structure that specifies that order.
Here...
MySQL: Transactions vs Locking Tables
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Why 0 is true but false is 1 in the shell?
...formation about the failure - why it happened, how to fix it, etc. Having zero mean 'success' and non-zero mean failure lets you can check pretty easily for success, and investigate the particular error for more details if you want to. A lot of APIs and frameworks have a similar convention - funct...