大约有 15,900 项符合查询结果（耗时：0.0174秒） [XML]
How to write a multidimensional array to a text file?
...works fine
import numpy as np
x = np.arange(20).reshape((4,5))
np.savetxt('test.txt', x)
While the same thing would fail (with a rather uninformative error: TypeError: float argument required, not numpy.ndarray) for a 3D array:
import numpy as np
x = np.arange(200).reshape((4,5,10))
np.savetxt('tes...
In PHP, can you instantiate an object and call a method on the same line?
...ose names won't conflict.
So, if you declared a class like this :
class Test {
public function __construct($param) {
$this->_var = $param;
}
public function myMethod() {
return $this->_var * 2;
}
protected $_var;
}
You can then declare a function that r...
jQuery counting elements by class - what is the best way to implement this?
...cript>
</head>
<body>
<p class="red">Test</p>
<p class="red">Test</p>
<p class="red anotherclass">Test</p>
<p class="red">Test</p>
<p class="red">Test</p>
<p class="...
Logic to test that 3 of 4 are True
...u want to use this logic in a programming language, my suggestion is
bool test(bool a, bool b, bool c, bool d){
int n1 = a ? 1 : 0;
int n2 = b ? 1 : 0;
int n3 = c ? 1 : 0;
int n4 = d ? 1 : 0;
return n1 + n2 + n3 + n4 == 3;
}
Or if you want, you can put all of these in a singl...
What guidelines for HTML email design are there? [closed]
...'t even think about flash, Javascript, SVG, canvas, or anything like that.
Test, a lot. Make sure you test in a recent Outlook (things have changed a lot! It now uses Word as its HTML rendering engine, and it's crippled: Word 2007 HTML/CSS support). Gmail is pretty finicky also. Surprisingly Yahoo's...
Exact time measurement for performance testing [duplicate]
...ong seed = Environment.TickCount;
//use the second Core/Processor for the test
Process.GetCurrentProcess().ProcessorAffinity = new IntPtr(2);
//prevent "Normal" Processes from interrupting Threads
Process.GetCurrentProcess().PriorityClass = ProcessPriorityClass.High;
//prevent "Normal" Threads fr...
Fastest method to replace all instances of a character in a string [duplicate]
What is the fastest way to replace all instances of a string/character in a string in JavaScript? A while , a for -loop, a regular expression?
...
What Automatic Resource Management alternatives exist for Scala?
...xpression:
import resource._
for(input <- managed(new FileInputStream("test.txt")) {
// Code that uses the input as a FileInputStream
}
2) Monadic-style
import resource._
import java.io._
val lines = for { input <- managed(new FileInputStream("test.txt"))
val bufferedRead...
What's the best way to detect a 'touch screen' device using JavaScript?
...
Modernizr does not test for touch screens. It tests for the existence of touch events in the browser. See the "Misc Tests" section in the docs: modernizr.com/docs/#features-misc
– Harry Love
Jan 24 '12 at ...
form_for with nested resources
...5/nesting-resources
Interestingly, I just learned that most people's unit-tests are not actually testing all paths. When people follow jamisbuck's suggestion, they end up with two ways to get at nested resources. Their unit-tests will generally get/post to the simplest:
# POST /comments
post :crea...