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Does JavaScript have a built in stringbuilder class?
...cked the performance on http://jsperf.com/javascript-concat-vs-join/2.
The test-cases concatenate or join the alphabet 1,000 times.
In current browsers (FF, Opera, IE11, Chrome), "concat" is about 4-10 times faster than "join".
In IE8, both return about equal results.
In IE7, "join" is about 100 ...
How do I use reflection to invoke a private method?
...rivate set; }
void incr(int value) { count += value; }
}
[Test]
public void making_questionable_life_choices()
{
Counter c = new Counter ();
c.call ("incr", 2); // "incr" is private !
c.call ("incr", 3);
Assert.AreEqual (5, c.count...
What's the fastest way to convert String to Number in JavaScript?
...as I know.
Number(x);
parseInt(x, 10);
parseFloat(x);
+x;
By this quick test I made, it actually depends on browsers.
http://jsperf.com/best-of-string-to-number-conversion/2
Implicit marked the fastest on 3 browsers, but it makes the code hard to read… So choose whatever you feel like it!
...
How do I copy to the clipboard in JavaScript?
...ity prompts.
Text is read from the DOM and placed on the clipboard.
During testing ~April 2015 only Internet Explorer was noted as displaying permissions prompts whilst writing to the clipboard.
Overriding the copy event
See Clipboard API documentation on Overriding the copy event.
Allows you to ...
Check string for palindrome
...the end is done.
public static void main(String[] args) {
for (String testStr : Arrays.asList("testset", "none", "andna", "haah", "habh", "haaah")) {
System.out.println("testing " + testStr + " is palindrome=" + isPalindrome(testStr));
}
}
public static boolean isPalindrome(String ...
创建自定义 TinyWebDB 服务 · App Inventor 2 中文网
...multi-player games).
By default, the TinyWebDB component stores data on a test service provided by App Inventor, http://tinywebdb.appinventor.mit.edu/ . This service is helpful for testing, but it is shared by all App Inventor users, and it has a limit of 1000 entries. If you use it, your data will...
Java 8 NullPointerException in Collectors.toMap
...ault non-overloaded version instead. Maybe merge is faster, but I have not tested.
– Brett Ryan
Oct 19 '15 at 12:59
1
...
How to reference generic classes and methods in xml documentation
...t completely resolves.
If the method in the OP were in a namespace called Test, the completely resolved link to the method shown would be:
<see cref="M:Test.FancyClass`1.FancyMethod``1(`0)"/>
As you may be able to work out, there should only be one backtick before the number of class type p...
How to test if list element exists?
I would like to test if an element of a list exists, here is an example
7 Answers
7
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Python's time.clock() vs. time.time() accuracy?
...me() but exists also with time.clock(), so you should never run one timing test only, but always run a series of test and look at mean/variance of the times.
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