大约有 40,000 项符合查询结果（耗时：0.0617秒） [XML]
Getting an “ambiguous redirect” error
...ly the same error:
$ echo hello >
bash: syntax error near unexpected token `newline`
$ echo hello > ${NONEXISTENT}
bash: ${NONEXISTENT}: ambiguous redirect
$ echo hello > "${NONEXISTENT}"
bash: : No such file or directory
Adding quotes around the variable seems to be a good way to deal...
What is the difference between LL and LR parsing?
...string, whereas LR parsers begin at the target string and try to arrive back at the start symbol.
An LL parse is a left-to-right, leftmost derivation. That is, we consider the input symbols from the left to the right and attempt to construct a leftmost derivation. This is done by beginning at the...
What is the difference between a static and a non-static initialization code block
My question is about one particular usage of static keyword. It is possible to use static keyword to cover a code block within a class which does not belong to any function. For example following code compiles:
...
Inline SVG in CSS
...
Yes, it is possible. Try this:
body { background-image:
url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='10' height='10'><linearGradient id='gradient'><stop offset='10%' stop-color='%23F00'/><stop offset='90%'...
Multiple linear regression in Python
...
sklearn.linear_model.LinearRegression will do it:
from sklearn import linear_model
clf = linear_model.LinearRegression()
clf.fit([[getattr(t, 'x%d' % i) for i in range(1, 8)] for t in texts],
[t.y for t in texts])
T...
How do you do natural logs (e.g. “ln()”) with numpy in Python?
... edited Sep 25 '13 at 14:03
Hooked
65.2k3434 gold badges159159 silver badges232232 bronze badges
answered May 15 '12 at 1:41
...
Is there a way to iterate over a range of integers?
...ondering if there is a way to iterate over a range of numbers, something like this:
11 Answers
...
Vagrant's port forwarding not working [closed]
...mall problem at the end of the Getting Started guide for vagrant . I'm working on a CentOS basebox that has Apache2 running (provisioning via Puppet). I've set up port forwarding for web requests using the following line in Vagrantfile :
...
How to create a simple map using JavaScript/JQuery [duplicate]
...ence/Global_Objects/Map
var map = new Object(); // or var map = {};
map[myKey1] = myObj1;
map[myKey2] = myObj2;
function get(k) {
return map[k];
}
//map[myKey1] == get(myKey1);
share
|
impro...
Changing element style attribute dynamically using JavaScript
...n property names. If you were setting, border or something single-worded like that instead, your code would work just fine.
However, the thing you need to remember for padding-top, and for any hyphenated attribute name, is that in javascript, you remove the hyphen, and make the next letter uppercas...