大约有 20,000 项符合查询结果（耗时：0.0293秒） [XML]
Pretty Printing a pandas dataframe
...f you're not using Jupyter for some reason, e.g. you want to do some quick testing on the console, you can use the DataFrame.to_string method, which works from -- at least -- Pandas 0.12 (2014) onwards.
import pandas as pd
matrix = [(1, 23, 45), (789, 1, 23), (45, 678, 90)]
df = pd.DataFrame(matri...
How can I get the iOS 7 default blue color programmatically?
...
@AndreyTarantsov from a quick test it seems to work fine. From the UIVIew documentation: "Manipulations to your application’s user interface must occur on the main thread. Thus, you should always call the methods of the UIView class from code running in...
Set the selected index of a Dropdown using jQuery
... Also in 2015, I have no problem with prop('selectedIndex', ...); (tested with Chrome & Firefox) changing the selection.
– Lambart
Sep 22 '15 at 23:15
...
How to tell if a browser is in “quirks” mode?
...quirks can be found here
Try sticking the following line in your HTML for testing (very bad javascript behavious I'm passing on here - sorry...make sure this never goes live :)
<a href="javascript:alert(document.compatMode);">What mode am I?</a>
...
compareTo() vs. equals()
When testing for equality of String 's in Java I have always used equals() because to me this seems to be the most natural method for it. After all, its name already says what it is intended to do. However, a colleague of mine recently told me had been taught to use compareTo() == 0 instead of ...
How to get record created today by rails activerecord?
...point for doing in a way you can manipulate time. For instance, if you are testing, you will probably manipulate time and then the first option won't work. You want to avoid that kind of future possible failure that will probably take some debug time.
– lucasarruda
...
Android read text raw resource file
...) throws IOException {
return getResource(id, this);
}
or from a test case, add
public byte[] getResource(int id) throws IOException {
return getResource(id, getContext());
}
And watch your error handling - don't catch and ignore exceptions when your resources must exist or som...
Getting file names without extensions
...e any actual IO call. How much it impacts performance? i can't say without testing. But i assume it's not that great
– fjch1997
Oct 19 '17 at 19:20
|
...
How do I turn a C# object into a JSON string in .NET?
...
My testing showed that Newtonsoft is slower than JavaScriptSerializer class. (.NET 4.5.2)
– nemke
Sep 28 '15 at 11:34
...
Best way to compare dates in Android
...date in a String format to the current date. This is how I did it (haven't tested, but should work), but am using deprecated methods. Any good suggestion for an alternative? Thanks.
...