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Java: How to get input from System.console()
...Console class to get input from user but a null object is returned when I call System.console() . Do I have to change anything before using System.console?
...
What is stdClass in PHP?
... class, kind of like Object in Java or object in Python (Edit: but not actually used as universal base class; thanks @Ciaran for pointing this out).
It is useful for anonymous objects, dynamic properties, etc.
An easy way to consider the StdClass is as an alternative to associative array. See thi...
How do I check if file exists in jQuery or pure JavaScript?
...n('HEAD', url, false);
http.send();
return http.status!=404;
}
Small changes and it could check for status HTTP status code 200 (success), instead.
EDIT 2: Since sync XMLHttpRequest is deprecated, you can add a utility method like this to do it async:
function executeIfFileExist(src, cal...
Getting attribute using XPath
...
you can use:
(//@lang)[1]
these means you get all attributes nodes with name equal to "lang" and get the first one.
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Moving decimal places over in a double
...
which prints:
12.34
This works because Double.toString(d) performs a small amount of rounding on your behalf, but it is not much. If you are wondering what it might look like without rounding:
System.out.println(new BigDecimal(0.1));
System.out.println(new BigDecimal(x));
prints:
0.100000000...
img tag displays wrong orientation
... Why in the world do images even have orientation metadata? If you really wanted to rotate the picture then wouldn't you just shift around the pixels and swap the width for the height?
– Jack Giffin
Oct 29 '17 at 1:02
...
How to turn a String into a JavaScript function call? [duplicate]
...eId) {}. Once we have a reference to a function inside a variable, we can call this function by "calling the variable", i.e. fn(t.parentNode.id), which equals clickedOnItem(t.parentNode.id), which was what the OP wanted.
More full example:
/* Somewhere: */
window.settings = {
/* [..] Other setti...
TypeError: 'module' object is not callable
...>
This is what the error message means:
It says module object is not callable, because your code is calling a module object. A module object is the type of thing you get when you import a module. What you were trying to do is to call a class object within the module object that happens to have ...
Does .NET provide an easy way convert bytes to KB, MB, GB, etc.?
...}
And here's the original implementation I suggested, which may be marginally slower, but a bit easier to follow:
static readonly string[] SizeSuffixes =
{ "bytes", "KB", "MB", "GB", "TB", "PB", "EB", "ZB", "YB" };
static string SizeSuffix(Int64 value, int decimalPlaces = 1)
{...
Javascript AES encryption [closed]
...'s a demonstration page that uses slowAES.
slowAES was easy to use. Logically designed. Reasonable OO packaging. Supports knobs and levers like IV and Encryption mode. Good compatibility with .NET/C#. The name is tongue-in-cheek; it's called "slow AES" because it's not implemented in C++. But...