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Fastest way to determine if an integer's square root is an integer
I'm looking for the fastest way to determine if a long value is a perfect square (i.e. its square root is another integer):
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Am I immoral for using a variable name that differs from its type only by case?
... data types.
Person person = new Person(); // okay
int Int = 42; // pure evil
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String to object in JS
...console.log(obj.path); // will print /img/filename.jpg
REMEMBER: eval is evil! :D
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How to create a memory leak in Java?
...t (way too many industry popular libraries).
ThreadLocal caches; those are evil in many cases. I am sure everyone has seen quite a bit of simple caches based on ThreadLocal, well the bad news: if the thread keeps going more than expected the life the context ClassLoader, it is a pure nice little lea...
How Do I Convert an Integer to a String in Excel VBA?
...ng was not found.
But adding an empty string to the value works, too.
Dim Test As Integer, Test2 As Variant
Test = 10
Test2 = Test & ""
//Test2 is now "10" not 10
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When are C++ macros beneficial? [closed]
...cros.
Anyway, macros are very useful when used correctly. Macros are not evil -- their misuse is evil.
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RegEx to exclude a specific string constant [duplicate]
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(?!^ABC$)(^.*$)
If this does not work in your editor, try this. It is tested to work in ruby and javascript:
^((?!ABC).)*$
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Is there any way to call a function periodically in JavaScript?
...f strings that will be "evaled" to those functions.
// example 1
function test() {
alert('called');
}
var interval = setInterval(test, 10000);
Or:
// example 2
var counter = 0;
var interval = setInterval(function() { alert("#"+counter++); }, 5000);
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Strangest language feature
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Semicolon insertion is one of the most evil parts of JavaScript.
– user240438
Jan 5 '10 at 1:17
231
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Adding a background image to a element
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Use like ..
<div style="background-image: url(../images/test-background.gif); height: 200px; width: 400px; border: 1px solid black;">Example of a DIV element with a background image:</div>
<div style="background-image: url(../images/test-background.gif); height: 200px;...