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How does password salt help against a rainbow table attack?
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How to serialize Joda DateTime with Jackson JSON processor?
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This has become very easy with Jackson 2.0 and the Joda module.
ObjectMapper mapper = new ObjectMapper();
mapper.registerModule(new JodaModule());
Maven dependency:
<dependency>
<groupId>com.fasterxml.jackson.datatype</groupId>
<artifac...
Is iterating ConcurrentHashMap values thread safe?
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Will
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answered Sep 22 '10 at 11:17
WaldheinzWaldheinz...
Is it possible to implement a Python for range loop without an iterator variable?
...d by Ryan. It can mess up your interpreter.
>>> for _ in xrange(10): pass
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>>> _
9
>>> 1+2
3
>>> _
9
And according to Python grammar, it is an acceptable variable name:
identifier ::= (letter|"_") (letter | digit | "_")*
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How do I “commit” changes in a git submodule? [duplicate]
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430
A submodule is its own repo/work-area, with its own .git directory.
So, first commit/push your ...
How to create a backup of a single table in a postgres database?
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edited Jun 22 at 6:30
James
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answered Sep 10 '10 at 7:39
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Is there a git-merge --dry-run option?
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edited Dec 1 '17 at 10:17
Community♦
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answered Feb 1 '09 at 19:57
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'sudo gem install' or 'gem install' and gem locations
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edited Nov 6 '15 at 16:20
the Tin Man
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ans...
Do the parentheses after the type name make a difference with new?
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In C++1998 there are 2 types of initialization: zero and default
In C++2003 a 3rd type of initialization, value initialization was added.
Assume:
struct A { int m; }; // POD
struct B { ~B(); int m; }; // non-POD, compiler generated default ctor
struct C { C() : m() {}; ~C(); int m; }; // non-P...