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How to change identity column values programmatically?
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40
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How to generate all permutations of a list?
...ow it works, here's one nice approach, taken from http://code.activestate.com/recipes/252178/:
def all_perms(elements):
if len(elements) <=1:
yield elements
else:
for perm in all_perms(elements[1:]):
for i in range(len(elements)):
# nb element...
What does character set and collation mean exactly?
...t is a set of symbols
and encodings. A collation is a set of
rules for comparing characters in a
character set. Let's make the
distinction clear with an example of
an imaginary character set.
Suppose that we have an alphabet with
four letters: 'A', 'B', 'a', 'b'. We
give each lett...
How do I parse a string to a float or int?
...ed Dec 19 '08 at 1:54
Harley HolcombeHarley Holcombe
145k1515 gold badges6666 silver badges6262 bronze badges
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What is the meaning of #XXX in code comments?
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XXX in a comment is usually a heads-up. It could be:
Something that's not implemented completely correctly.
Something that should be fixed later on.
Highlighting a possible problem spot.
Something you're not sure about, a question.
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How to import the class within the same directory or sub directory?
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Difference between getAttribute() and getParameter()
...rs. Those passed from the client to the server. For example http://example.com/servlet?parameter=1. Can only return String
getAttribute() is for server-side usage only - you fill the request with attributes that you can use within the same request. For example - you set an attribute in a servlet, an...
How do I query if a database schema exists
... edited May 23 '17 at 10:31
Community♦
111 silver badge
answered Oct 22 '08 at 14:44
bdukesbdukes
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Hidden features of Eclipse [closed]
...'t forget Ctrl+Shift+L, which displays a list of all the keyboard shortcut combinations (just in case you forget any of those listed here).
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edited Nov 29 '11 at 12:40
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