大约有 23,000 项符合查询结果（耗时：0.0347秒） [XML]
What does the “yield” keyword do?
...i)
0
1
4
Everything you can use "for... in..." on is an iterable; lists, strings, files...
These iterables are handy because you can read them as much as you wish, but you store all the values in memory and this is not always what you want when you have a lot of values.
Generators
Generators ar...
Is there a way to squash a number of commits non-interactively?
...elif [ -z "$commitMsg" ]
then
echo "Invalid commit message. Make sure string is not empty"
else
echo "...input looks good"
echo "...proceeding to squash"
git reset --soft HEAD~$squashCount
git commit -m "$commitMsg"
echo "...done"
fi
echo
exit 0
Then to hook up that squas...
Is there a Python function to determine which quarter of the year a date is in?
...le of a function that gets a datetime.datetime object and returns a unique string for each quarter:
from datetime import datetime, timedelta
def get_quarter(d):
return "Q%d_%d" % (math.ceil(d.month/3), d.year)
d = datetime.now()
print(d.strftime("%Y-%m-%d"), get_q(d))
d2 = d - timedelta(90)
...
How do I check what version of Python is running my script?
...
This information is available in the sys.version string in the sys module:
>>> import sys
Human readable:
>>> print(sys.version) # parentheses necessary in python 3.
2.5.2 (r252:60911, Jul 31 2008, 17:28:52)
[GCC 4.2.3 (Ubuntu 4.2.3-2ubuntu7)]...
How do I dump the data of some SQLite3 tables?
...ch I can import into almost everything
.mode csv
-- use '.separator SOME_STRING' for something other than a comma.
.headers on
.out file.csv
select * from MyTable;
If you want to reinsert into a different SQLite database then:
.mode insert <target_table_name>
.out file.sql
select * fro...
log4net not working
... If the xml snippet is in it's own file, you'll need to use the .Configure(string) overload that takes the path to the file. Without this call (or apparently the assembly level attribute mentioned by Kirk Woll), then log4net won't be logging at all.
If you believe this is all done, and log4net shou...
Xcode 5 & Asset Catalog: How to reference the LaunchImage?
...
- (NSString *)splashImageNameForOrientation:(UIInterfaceOrientation)orientation {
CGSize viewSize = self.view.bounds.size;
NSString* viewOrientation = @"Portrait";
if (UIDeviceOrientationIsLandscape(orientation)) {
...
ASP.NET MVC controller actions that return JSON or partial html
...at then evaluates the Json object returned.
If you want to return a plain string, you can just use the ContentResult:
public ActionResult SomeActionMethod() {
return Content("hello world!");
}
ContentResult by default returns a text/plain as its contentType.
This is overloadable so you can a...
Bash script absolute path with OS X
... @FPereira Generating program code from unescaped user-supplied string is never a good idea. '' is not bullet-proof. It breaks if $0 contains a single quote, for instance. A very simple example: try your version in /tmp/'/test.sh, and call /tmp/'/test.sh by its full path.
...
Import a module from a relative path
...spect to the import list. 2) The 1st value, [0], in the tuple is an empty string. The 2nd, [1], shows the file name. I am guessing that the first should be the path... Any ideas?
– Adam Lewis
Jan 17 '12 at 5:38
...