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Best practice for Python assert
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To be able to automatically throw an error when x become less than zero throughout the function. You can use class descriptors. Here is an example:
class LessThanZeroException(Exception):
pass
class variable(object):
def __init__(self, value=0):
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Undo git reset --hard with uncommitted files in the staging area
...it. But I knew the commit hash, so I was able to do git cherry-pick COMMIT_HASH to restore it.
I did this within a few minutes of losing the commit, so it may work for some of you.
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Why would a JavaScript variable start with a dollar sign? [duplicate]
...ful.
– pedromanoel
Jan 28 '14 at 11:05
10
Thumbs up for the $. But underscores in variable names ...
C++及Windows异常处理(try，catch; __try,__finally, __except) - C/C++ - ...
...har* n, const char* a)
{ p = fopen(n,a); if (p==0) throw Open_error(errno); }
File_handle(FILE* pp)
{ p = pp; if (p==0) throw Open_error(errno); }
~File_handle() { fclose(p); }
operator FILE*() { return p; }
// ...
};
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If my interface must return Task what is the best way to have a no-operation implementation?
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Recently encountered this and kept getting warnings/errors about the method being void.
We're in the business of placating the compiler and this clears it up:
public async Task MyVoidAsyncMethod()
{
await Task.CompletedTask;
}
This brings together the b...
android studio 0.4.2: Gradle project sync failed error
After updating to 0.4.2 I get this error when opening a project:
'Gradle project sync failed. Basic functionality (e.g. editing, debugging) will not work proprerly'
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SQLAlchemy: print the actual query
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answered May 23 '14 at 18:05
zzzeekzzzeek
58k1818 gold badges167167 silver badges169169 bronze badges
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What would a “frozen dict” be?
...rom putting a mutable list as a value, in which case hashing will throw an error. There's nothing necessarily wrong with that, but users should be aware. Another thing: This hashing algorithm is poorly chosen, very prone to hash collisions. For example {'a':'b'} hashes the same as {'b':'a'} and {'a'...
In which scenario do I use a particular STL container?
...s, because sequential access is precisely what a list does. Rather glaring error there.
– underscore_d
Nov 28 '15 at 13:01
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Iteration over std::vector: unsigned vs signed index variable
...s a type, a variable (member) or a function (method). We get the following error with gcc:
In member function ‘void MyClass<T>::myMethod()’:
error: expected `;' before ‘it’
error: ‘it’ was not declared in this scope
In member function ‘void MyClass<T>::sort() [with T = MyC...