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How do I change the working directory in Python?
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cdunn2001's lightweight decorator-based answer is the ideal approach for modern Python. The above answer demonstrates why. Never call os.chdir() outside of a context manager, unless you think you know what you're doing. (You probably don't.)
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Rolling or sliding window iterator?
...op(0) from the list and append() the new item.
Here is an optimized deque-based implementation patterned after your original:
from collections import deque
def window(seq, n=2):
it = iter(seq)
win = deque((next(it, None) for _ in xrange(n)), maxlen=n)
yield win
append = win.append...
How to detect the current OS from Gradle
...current()
As of mid 2015, Peter Kahn's answer is still valid. Environment-based profile activation is still something done relatively easier in Maven. But keep in mind that org.apache.tools.ant.taskdefs.condition.Os.isFamily is not exclusive in the sense that if it returns true with one particular ...
Find a file in python
...leAttributesW(unicode(path)) & FILE_ATTRIBUTE_REPARSE_POINT)
def find(base, filenames):
hits = []
def find_in_dir_subdir(direc):
content = scandir(direc)
for entry in content:
if entry.name in filenames:
hits.append(os.path.join(direc, entry....
Calculate the date yesterday in JavaScript
...((new Date()).valueOf() - 1000*60*60*24);
this creates a new date object based on the value of "now" as an integer which represents the unix epoch in milliseconds subtracting one day.
Two days ago:
var twoDaysAgo = new Date((new Date()).valueOf() - 1000*60*60*24*2);
An hour ago:
var oneHourAg...
how to get request path with express req object
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Warning: This is a misleading answer, based on the OP question. This will also return the query string (e.g. ?a=b&c=5) if it was present. See expressjs.com/en/api.html#req.originalUrl
– Ciabaros
May 29 '19 at 14:32
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What is the gain from declaring a method as static
...inally better at most, since the code does not need to do dynamic dispatch based on the type.
However, a much stronger argument against refactoring into static methods is that currently using static is considered bad practice. Static methods / variables do not integrate well into an object oriente...
What is a clean, pythonic way to have multiple constructors in Python?
...w__.
This could be used if the type of initialization cannot be selected based on the type of the constructor argument, and the constructors do not share code.
Example:
class MyClass(set):
def __init__(self, filename):
self._value = load_from_file(filename)
@classmethod
de...
When to use IList and when to use List
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It's always best to use the lowest base type possible. This gives the implementer of your interface, or consumer of your method, the opportunity to use whatever they like behind the scenes.
For collections you should aim to use IEnumerable where possible. Thi...
What is the use of the @Temporal annotation in Hibernate?
...th temporal data, you might want to describe the expected precision in database. Temporal data can have DATE, TIME, or TIMESTAMP precision (i.e., the actual date, only the time, or both). Use the @Temporal annotation to fine tune that.
The temporal data is the data related to time. For example, in ...