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What's the difference between lists enclosed by square brackets and parentheses in Python?
... = {}
>>> z[x] = 3
>>> z
{(1, 2): 3}
>>> z[y] = 4
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: unhashable type: 'list'
Note that, as many people have pointed out, you can add tuples together. For example:
>>>...
Why can't enum's constructor access static fields?
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answered Jan 14 '09 at 17:50
Jon SkeetJon Skeet
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When do I need to use AtomicBoolean in Java?
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It doesn't look like a real-world example - other thread can see true when initialize() haven't been completed. So, it works only if other t...
Catch-22 prevents streamed TCP WCF service securable by WIF; ruining my Christmas, mental health
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+50
WCF has ...
“Debug only” code that should run only when “turned on”
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145
An instance variable would probably be the way to do what you want. You could make it static to...
await vs Task.Wait - Deadlock?
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Mario Sannum
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answered Oct 30 '12 at 14:19
Stephen ClearyStephen Cleary
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What's the (hidden) cost of Scala's lazy val?
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edited Feb 20 '14 at 20:33
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an...
.net implementation of bcrypt
...ely used?
– Gareth
May 17 '09 at 6:54
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The reason I thought about using BCrypt was because of th...
jQuery selectors on custom data attributes using HTML5
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4 Answers
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Sharing src/test classes between modules in a multi-module maven project
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154
Your Consumer project depends upon your Data project, therefore we are happy that Data must be b...