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How to remove all rows in a numpy.ndarray that contain non-numeric values
Basically, I'm doing some data analysis. I read in a dataset as a numpy.ndarray and some of the values are missing (either by just not being there, being NaN , or by being a string written " NA ").
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Get PHP class property by string
...ho $obj->$prop;
Or, if you have control over the class, implement the ArrayAccess interface and just do this
echo $obj['Name'];
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What are the differences between ArrayList and Vector?
What are the differences between the two data structures ArrayList and Vector , and where should you use each of them?
7...
How can I get query string values in JavaScript?
...essary, one single function to split up the parameters into an associative-array style object is enough. If you're not working with the HTML 5 History API, this is only necessary once per page load. The other suggestions here also fail to decode the URL correctly.
var urlParams;
(window.onpopstate...
开源邮件传输代理软件 -- Postfix 介绍 - 开源 & Github - 清泛网 - 专注C/C++及内核技术
...投递代理procmail。在流行的linux发行版本RedHat中，我们就使用procmail作为最终的本地投递代理。
远程投递代理SMTP进程根据收件人地址查询一个SMTP服务器列表，按照顺序连接每一个SMTP服务器，根据性能对该表进行排序。在系统负...
What is the difference between typeof and instanceof and when should one be used vs. the other?
...nceof RegExp; // true
typeof /regularexpression/; // object
[] instanceof Array; // true
typeof []; //object
{} instanceof Object; // true
typeof {}; // object
And the last one is a little bit tricky:
typeof null; // object
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Socket.IO - how do I get a list of connected sockets/clients?
... Socket.IO 0.7 you have a clients method on the namespaces, this returns a array of all connected sockets.
API for no namespace:
var clients = io.sockets.clients();
var clients = io.sockets.clients('room'); // all users from room `room`
For a namespace
var clients = io.of('/chat').clients();
va...
clear javascript console in Google Chrome
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console.log(new Array(24 + 1).join('\n') does the same thing, but it's much shorter. :)
– nyuszika7h
Feb 2 '11 at 15:08
1...
How to get key names from JSON using jq
...on",
"appname",
"build-date",
"version"
]
UPDATE: To create a BASH array using these keys:
Using BASH 4+:
mapfile -t arr < <(jq -r 'keys[]' ms.json)
On older BASH you can do:
arr=()
while IFS='' read -r line; do
arr+=("$line")
done < <(jq 'keys[]' ms.json)
Then print it...
Is Fortran easier to optimize than C for heavy calculations?
...ounterpart after optimization. Why so? If you write values into the output array, you may change the values of matrix. After all, the pointers could overlap and point to the same chunk of memory (including the int pointer!). The C compiler is forced to reload the four matrix values from memory for a...