大约有 44,000 项符合查询结果（耗时：0.0742秒） [XML]
Loading basic HTML in Node.js
...
I just found one way using the fs library. I'm not certain if it's the cleanest though.
var http = require('http'),
fs = require('fs');
fs.readFile('./index.html', function (err, html) {
if (err) {
throw err;
}
http.createServer(function(request, re...
How to add pandas data to an existing csv file?
I want to know if it is possible to use the pandas to_csv() function to add a dataframe to an existing csv file. The csv file has the same structure as the loaded data.
...
Combine two or more columns in a dataframe into a new column with a new name
For example if I have this:
8 Answers
8
...
what's the correct way to send a file from REST web service to client?
I've just started to develop REST services, but I've come across a difficult situation: sending files from my REST service to my client. So far I've gotten the hang of how to send simple data types (strings, integers, etc) but sending a file is a different matter since there are so many file formats...
Why should I use var instead of a type? [duplicate]
...eneration of developers wouldn't stop complaining about it. My defense was if they had read and understood the code it didn't make any difference.I think it actually make things easier; if you refactor code and the types change you don't have to update your references to the whatever you've refactor...
How to combine paths in Java?
...you should use a class which is designed to represent a file system path.
If you're using Java 7 or Java 8, you should strongly consider using java.nio.file.Path; Path.resolve can be used to combine one path with another, or with a string. The Paths helper class is useful too. For example:
Path pa...
remove None value from a list without removing the 0 value
...t;>> L = [0, 23, 234, 89, None, 0, 35, 9]
>>> [x for x in L if x is not None]
[0, 23, 234, 89, 0, 35, 9]
Just for fun, here's how you can adapt filter to do this without using a lambda, (I wouldn't recommend this code - it's just for scientific purposes)
>>> from operator ...
Adjusting the Xcode iPhone simulator scale and size [duplicate]
...xel Accurate: Resizes your simulator to actual (Physical) device's pixels, if your mac system display screen size (pixel) supports that much high resolution, else this option will remain disabled.
Tip: rotate simulator ( ⌘ + ← or ⌘ + → ), if Pixel Accurate is disabled. It may be enabled (...
How to send an object from one Android Activity to another using Intents?
...
If you're just passing objects around then Parcelable was designed for this. It requires a little more effort to use than using Java's native serialization, but it's way faster (and I mean way, WAY faster).
From the docs, a ...
How do you convert epoch time in C#?
...Offset2 = DateTimeOffset.FromUnixTimeMilliseconds(epochMilliseconds);
And if you need the DateTime object instead of DateTimeOffset, then you can call the DateTime property
DateTime dateTime = dateTimeOffset .DateTime;
sha...