大约有 43,000 项符合查询结果（耗时：0.0276秒） [XML]
How to track untracked content?
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You have added vendor/plugins/open_flash_chart_2 as “gitlink” entry, but never defined it as a submodule. Effectively you are using the internal feature that git submodule uses (gitlink entries) but you are not using the submodule feature itself.
You pr...
C++ compiling on Windows and Linux: ifdef switch [duplicate]
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use:
#ifdef __linux__
//linux code goes here
#elif _WIN32
// windows code goes here
#else
#endif
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Elegant Python function to convert CamelCase to snake_case?
...se
import re
name = 'CamelCaseName'
name = re.sub(r'(?<!^)(?=[A-Z])', '_', name).lower()
print(name) # camel_case_name
If you do this many times and the above is slow, compile the regex beforehand:
pattern = re.compile(r'(?<!^)(?=[A-Z])')
name = pattern.sub('_', name).lower()
To handle mor...
Two way/reverse map [duplicate]
...ic that you want. Here's a basic example:
class TwoWayDict(dict):
def __setitem__(self, key, value):
# Remove any previous connections with these values
if key in self:
del self[key]
if value in self:
del self[value]
dict.__setitem__(self,...
How to sort two lists (which reference each other) in the exact same way
... of 10000 random ints): %timeit index = range(len(l1)); index.sort(key=l1.__getitem__); map(l1.__getitem__, index); map(l2.__getitem__, index) 100 loops, best of 3: 8.04 ms per loop (vs 9.17 ms, 9.07 ms for senderle's timits)
– Quantum7
Aug 12 '13 at 21:35
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Stop pip from failing on single package when installing with requirements.txt
...optional dependencies:
#!/bin/sh
while read dependency; do
dependency_stripped="$(echo "${dependency}" | sed -e 's/^[[:space:]]*//' -e 's/[[:space:]]*$//')"
# Skip comments
if [[ $dependency_stripped == \#* ]]; then
continue
# Skip blank lines
elif [ -z "$dependency_str...
Calling a function of a module by using its name (a string)
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Assuming module foo with method bar:
import foo
method_to_call = getattr(foo, 'bar')
result = method_to_call()
You could shorten lines 2 and 3 to:
result = getattr(foo, 'bar')()
if that makes more sense for your use case.
You can use getattr in this fashion on class insta...
Rolling median algorithm in C
...r statistic trees!!!
These have two critical operations:
iter = tree.find_by_order(value)
order = tree.order_of_key(value)
See libstdc++ manual policy_based_data_structures_test (search for "split and join").
I have wrapped the tree for use in a convenience header for compilers supporting c++0x...
Swift equivalent for MIN and MAX macros
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With Swift 5, max(_:_:) and min(_:_:) are part of the Global Numeric Functions. max(_:_:) has the following declaration:
func max<T>(_ x: T, _ y: T) -> T where T : Comparable
You can use it like this with Ints:
let maxInt = max(5,...
Why return NotImplemented instead of raising NotImplementedError
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It's because __lt__() and related comparison methods are quite commonly used indirectly in list sorts and such. Sometimes the algorithm will choose to try another way or pick a default winner. Raising an exception would break out of the s...