大约有 46,000 项符合查询结果(耗时:0.0968秒) [XML]
Matplotlib Legends not working
...uple of line objects, no matter how many are actually created from the command. Without the comma, "plot1" and "plot2" are tuples instead of line objects, making the later call to plt.legend() fail.
The comma implicitly unpacks the results so that instead of a tuple, "plot1" and "plot2" automatica...
What is a proper naming convention for MySQL FKs?
... users(user_id);
I try to stick with the same field names in referencing and referenced tables, as in user_id in the above example. When this is not practical, I also append the referenced field name to the foreign key name.
This naming convention allows me to "guess" the symbolic name just by l...
What is `params.require(:person).permit(:name, :age)` doing in Rails 4?
...tionController::Parameters, which provides several methods such as require and permit.
The require method ensures that a specific parameter is present, and if it's not provided, the require method throws an error. It returns an instance of ActionController::Parameters for the key passed into requi...
Adding System.Web.Script reference in class library
...
It's the year 2017, we're still in VS 2005 and this answer just saved my bacon. To infinity, and beyond!
– Trasiva
Sep 19 '17 at 19:57
...
What is the purpose of @SmallTest, @MediumTest, and @LargeTest annotations in Android?
I'm new to Android and I've seen example code using these annotations. For example:
3 Answers
...
Timertask or Handler
Let's say that I want to perform some action every 10 seconds and it doesn't necessarily need to update the view.
3 Answer...
Using Moq to determine if a method is called
It is my understanding that I can test that a method call will occur if I call a higher level method, i.e.:
3 Answers
...
Is there a way to make a link clickable in the OSX Terminal?
...
Before OSX Lion:
cmd+shift+double-click on a URL in Terminal.app and it will open in the default program.
OSX Lion:
cmd+double-click (otherwise you will enter fullscreen mode).
share
|
i...
How can I wrap or break long text/word in a fixed width span?
...
Here is a reference table in case you need white-space and wrapping: css-tricks.com/almanac/properties/w/whitespace
– Hritik
Jul 4 at 16:52
add a comment
...
Python : List of dict, if exists increment a dict value, if not append a new dict
...en easier:
from collections import defaultdict # available in Python 2.5 and newer
urls_d = defaultdict(int)
for url in list_of_urls:
urls_d[url] += 1
If you access the defaultdict using a key, and the key is not already in the defaultdict, the key is automatically added with a default valu...
