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What are some common uses for Python decorators? [closed]
... Possibly justified, but decorators are inherently confusing, esp. to first-year noobs who come behind you and try to mod your code. Avoid this with simplicity: just have do_something() enclose its code in a block under 'with lock:' and everyone can clearly see your purpose. Decorato...
Parsing IPv6 extension headers containing unknown extensions
...ermediate proxy modified TCP headers without knowledge of an encapsulating ESP header?) Simplicity beats "extensible" in this case!
– jman
Jul 8 '13 at 4:08
...
Is it bad practice to make a setter return “this”?
... lots of nulls or default values, and it gets hard to know which value corresponds to what)
Several overloaded constructors (downside: gets unwieldy once you have more than a few)
Factory/static methods (downside: same as overloaded constructors - gets unwieldy once there is more than a few)
If yo...
HTTP GET request in JavaScript?
...alse for synchronous request
xmlHttp.send( null );
return xmlHttp.responseText;
}
However, synchronous requests are discouraged and will generate a warning along the lines of:
Note: Starting with Gecko 30.0 (Firefox 30.0 / Thunderbird 30.0 / SeaMonkey 2.27), synchronous requests on the...
std::wstring VS std::string
... the C++ program contains implementation-defined behavior as to whether olè is encoded as UTF-8 or not. Further more, the reason you cannot natively stream wchar_t * to std::cout is because the types are incompatible resulting in an ill-formed program and it has nothing to do with the use of encod...
Separation of JUnit classes into special test package?
... this scheme too), it also doesn't allow to test visibility automatically, esp. if you use TDD and let your IDE generate needed method stubs. It may generate them with package-private visibility (NetBeans, I'm looking at you), which makes your test pass perfectly (after you actually put implementati...
I've found my software as cracked download on Internet, what to do?
...property to illegal duplication/usage of your IP.
– Lèse majesté
Aug 24 '10 at 2:41
30
There ar...
IN vs OR in the SQL WHERE Clause
...ty point of view), when there are less values to be compared.
IN is useful esp. when you have a dynamic source, with which you want values to be compared.
Another alternative is to use a JOIN with a temporary table.
I don't think performance should be a problem, provided you have necessary indexes....
List comprehension rebinds names even after scope of comprehension. Is this right?
...on
requires a separate execution frame.
Thus, generator expressions
(especially if they iterate over a
short sequence) were less efficient
than list comprehensions.
However, in Python 3, we decided to
fix the "dirty little secret" of list
comprehensions by using the same
impleme...
Read a text file using Node.js?
...ing a file named on the command-line; there are obviously many subtleties (esp. performance) that are beyond the scope of this question.
– maerics
Feb 7 '12 at 5:33
...