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Run Java Code Online [closed]
...ne is the best site for the online code running, debugging and it provides extra performance stats also.
Without Sign Up, you can run code upto of maximum 5 sec, and for signup, upto a max of 15 sec. And for Signup, the code management and history is also too good.
However, it has some maximum am...
Detect if an element is visible with jQuery [duplicate]
...l Irish at Google, we identified some cases where we could skip a bunch of extra work when custom selectors like :visible are used many times in the same document. That particular case is up to 17 times faster now!
Keep in mind that even with this improvement, selectors like :visible and :hidden can...
Overloading member access operators ->, .*
...ow is pointing at."
Bruce Eckel: Thinking CPP Vol-one : operator->
The extra functionality is provided for convenience, so you do not have to call
a->->func();
You can simply do:
a->func();
That makes operator -> different from the other operator overloads.
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How to override trait function and call it from the overridden function?
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An alternative approach if interested - with an extra intermediate class to use the normal OOO way. This simplifies the usage with parent::methodname
trait A {
function calc($v) {
return $v+1;
}
}
// an intermediate class that just uses the trait
class I...
How to find the size of localStorage
...s the length of the key itself.
Each length is multiplied by 2 because the char in javascript stores as UTF-16 (occupies 2 bytes)
P.P.S. Should work both in Chrome and Firefox.
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二维码的生成细节及原理 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...映射成一个字符索引表。如下所示：（其中的SP是空格，Char是字符，Value是其索引值） 编码的过程是把字符两两分组，然后转成下表的45进制，然后转成11bits的二进制，如果最后有一个落单的，那就转成6bits的二进制。而编码模...
How to create a drop-down list?
...n = findViewById(R.id.spinner1);
//create a list of items for the spinner.
String[] items = new String[]{"1", "2", "three"};
//create an adapter to describe how the items are displayed, adapters are used in several places in android.
//There are multiple variations of this, but this is the basic var...
innerText vs innerHTML vs label vs text vs textContent vs outerText
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text and label remove extra spaces. I got these results when querying options in a dropdown:
e.textContent = "A B C D "
e.text = "A B C D"
e.label = "A B C D"
s...
How does git store files?
... gc --aggressive uses value 250, which makes it run very slow, but provide extra compression for history data.
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Center/Set Zoom of Map to cover all visible Markers?
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An extra tip for anyone interested. You can define a padding by using fitBounds(bounds, int) which will allow you to have a little space between the markers and the map edges (or less space if you need). See Documentation
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