大约有 13,922 项符合查询结果(耗时:0.0393秒) [XML]

https://stackoverflow.com/ques... 

How to define multiple CSS attributes in jQuery?

...ltiple CSS properties, then use the following: .css({ 'font-size' : '10px', 'width' : '30px', 'height' : '10px' }); NB! Any CSS properties with a hyphen need to be quoted. I've placed the quotes so no one will need to clarify that, and the code will be 100% functional. ...
https://stackoverflow.com/ques... 

How to deal with page breaks when printing a large HTML table

...t; <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Test</title> <style type="text/css"> table { page-break-inside:auto } tr { page-break-inside:avoid; page-break-after:auto } thead { display:table-header-grou...
https://stackoverflow.com/ques... 

Add new attribute (element) to JSON object using JavaScript

... yet to be turned into the object it represents. To add a property to an existing object in JS you could do the following. object["property"] = value; or object.property = value; If you provide some extra info like exactly what you need to do in context you might get a more tailored answer....
https://stackoverflow.com/ques... 

Sending an HTTP POST request on iOS

... The following code describes a simple example using POST method.(How one can pass data by POST method) Here, I describe how one can use of POST method. 1. Set post string with actual username and password. NSString *post = [NSString stringWithFormat:@"User...
https://stackoverflow.com/ques... 

Why is transposing a matrix of 512x512 much slower than transposing a matrix of 513x513?

After conducting some experiments on square matrices of different sizes, a pattern came up. Invariably, transposing a matrix of size 2^n is slower than transposing one of size 2^n+1 . For small values of n , the difference is not major. ...
https://stackoverflow.com/ques... 

Pandas aggregate count distinct

...>>> df.groupby("date").agg({"duration": np.sum, "user_id": lambda x: x.nunique()}) duration user_id date 2013-04-01 65 2 2013-04-02 45 1 share ...
https://stackoverflow.com/ques... 

Python: using a recursive algorithm as a generator

... def getPermutations(string, prefix=""): if len(string) == 1: yield prefix + string else: for i in xrange(len(string)): for perm in getPermutations(string[:i] + string[i+1:], prefix+string[i]): yield perm ...
https://stackoverflow.com/ques... 

Rails: select unique values from a column

...rks only on "top level" queries, like above. Doesn't work on collection proxies ("has_many" relations, for example). Address.distinct.pluck(:city) # => ['Moscow'] user.addresses.distinct.pluck(:city) # => ['Moscow', 'Moscow', 'Moscow'] In this case, deduplicate after the query user.address...
https://stackoverflow.com/ques... 

Generating a random password in php

...s 1): function randomPassword() { $alphabet = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890'; $pass = array(); //remember to declare $pass as an array $alphaLength = strlen($alphabet) - 1; //put the length -1 in cache for ($i = 0; $i < 8; $i++) { $n = ra...
https://stackoverflow.com/ques... 

Convert pem key to ssh-rsa format

...eygen): -m key_format Specify a key format for the -i (import) or -e (export) conversion options. The supported key formats are: “RFC4716” (RFC 4716/SSH2 public or private key), “PKCS8” (PEM PKCS8 public key) or “PEM” (PEM public key). The default conversion format is “RFC4716”...