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Transactions in REST?
...ate a transaction as an object. This could contain all the data you know already, and put the transaction in a pending state.
POST /transfer/txn
{"source":"john's account", "destination":"bob's account", "amount":10}
{"id":"/transfer/txn/12345", "state":"pending", "source":...}
Once you have thi...
Difference between __str__ and __repr__?
...t be, but yeah)
__repr__ goal is to be unambiguous
__str__ goal is to be readable
Container’s __str__ uses contained objects’ __repr__
Default implementation is useless
This is mostly a surprise because Python’s defaults tend to be fairly useful. However, in this case, having a default for ...
What specific productivity gains do Vim/Emacs provide over GUI text editors?
...o the editor can be extended in whatever ways you need. Tons of scripts already written and downloadable.
If you look closely enough, you'll find that even features that other editors also have, Vim often does better. All editors have syntax highlighting, but Vim has a syntax file for nearly eve...
How to write the Fibonacci Sequence?
... yield cur
for i in SubFib(10, 200):
print i
My hint is to learn to read what you need. Project Euler (google for it) will train you to do so :P
Good luck and have fun!
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How to declare a structure in a header that is to be used by multiple files in c?
...ame names), and none has drawbacks I know of, so using the same name makes reading simpler if you don't use C separate "namespaces" for structs and other symbols.
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Instance variables vs. class variables in Python
...-common use case is methods. It isn't uncommon to use class attributes for read-only constants that instances need to know (though the only benefit to this is if you also want access from outside the class), but you should certainly be cautious about storing any state in them, which is seldom what y...
Why does casting int to invalid enum value NOT throw exception?
...s are often used as flags:
[Flags]
enum Permission
{
None = 0x00,
Read = 0x01,
Write = 0x02,
}
...
Permission p = Permission.Read | Permission.Write;
The value of p is the integer 3, which is not a value of the enum, but clearly is a valid value.
I personally would rather have seen ...
How to prevent Browser cache for php site
..., I can highly recommend grabbing a copy of HTTP: The Definitive Guide and reading the chapter on Caching. Also the RFCs, but reading those is a distinct skill. ("Connection: close" is a hilarious foot-shot to include, disabling efficient pipelining of requests, or will do nothing, but I suspect PHP...
What are the big improvements between guava and apache equivalent libraries?
...he code is full of best practices and useful patterns to make the API more readable, discoverable, performant, secure, thread-safe...
Having read Effective Java (awesome book BTW), I see these patterns everywhere in the code:
factory methods (such as ImmutableList.copyOf())
builder pattern (Immut...
Explanation of strong and weak storage in iOS5
... understanding the difference between strong and weak storage. I have read the documentation and other SO questions, but they all sound identical to me with no further insight.
...