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Manually raising (throwing) an exception in Python
...error: ValueError('Represents a hidden bug, do not catch this',)
Problem 2: Won't catch
And more specific catches won't catch the general exception:
def demo_no_catch():
try:
raise Exception('general exceptions not caught by specific handling')
except ValueError as e:
pri...
PHP append one array to another (not array_push or +)
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12 Answers
12
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Which cryptographic hash function should I choose?
...flaw that allows collisions to be found in theoretically far less than the 2^80 steps a secure hash function of its length would require. The attack is continually being revised and currently can be done in ~2^63 steps - just barely within the current realm of computability. For this reason NIST is ...
The key must be an application-specific resource id
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Robby PondRobby Pond
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Equivalent of .try() for a hash to avoid “undefined method” errors on nil? [duplicate]
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12 Answers
12
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What is the good python3 equivalent for auto tuple unpacking in lambda?
Consider the following python2 code
8 Answers
8
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What is the maximum number of characters that nvarchar(MAX) will hold?
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Max. capacity is 2 gigabytes of space - so you're looking at just over 1 billion 2-byte characters that will fit into a NVARCHAR(MAX) field.
Using the other answer's more detailed numbers, you should be able to store
(2 ^ 31 - 1 - 2) / 2 = ...
Read first N lines of a file in python
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249
Python 2
with open("datafile") as myfile:
head = [next(myfile) for x in xrange(N)]
print ...
Convert Float to Int in Swift
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322
You can convert Float to Int in Swift like this:
var myIntValue:Int = Int(myFloatValue)
printl...
Printing everything except the first field with awk
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92
Assigning $1 works but it will leave a leading space: awk '{first = $1; $1 = ""; print $0, first...