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Why does Clojure have “keywords” in addition to “symbols”?
... Clojure documentation for Keywords and Symbols.
Keywords are symbolic identifiers that evaluate to themselves. They provide very fast equality tests...
Symbols are identifiers that are normally used to refer to something else. They can be used in program forms to refer to function paramete...
Run java jar file on a server as background process
... Thanks Anton,currntly im stopping the server by killing the process id.i don't think it's best practice.is thery command to to stop the server?
– Bernad Ali
Aug 25 '12 at 5:01
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How to get Vim to highlight non-ascii characters?
...NonPrintable()
setlocal enc=utf8
if search('[^\x00-\xff]') != 0
call matchadd('Error', '[^\x00-\xff]')
echo 'Non printable characters in text'
else
setlocal enc=latin1
echo 'All characters are printable'
endif
endfunction
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Is there an Eclipse line-width marker?
...t is a vertical line to be drawn in the editor showing where the max line width while I am typing, not just when I run the formmater. I know this feature is available in some capacity because it is displayed in the code formatter property page.
...
Callback functions in Java
Is there a way to pass a call back function in a Java method?
17 Answers
17
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Check if a value is an object in JavaScript
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@Tresdin The best way is to run Object.prototype.toString.call(yourVar), being yourVar what you need to inspect. In case of arrays, Object.prototype.toString.call([1,2]) returns [object Array]
– Jose Rui Santos
Feb 25 '16 at 9:48
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Any reason not to use '+' to concatenate two strings?
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@martineau I think he means dynamically generating and append()ing strings to a list.
– Peter C
Apr 6 '12 at 16:17
5
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Why not infer template parameter from constructor?
...rs would require allowing non-specialized declarations without constructor calls, as in your second line. I.e., MyClass *pm here would be invalid for the same reason that a function declared template <typename T> void foo(); can't be called without explicit specialization.
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Javascript what is property in hasOwnProperty?
...rty returns a boolean value indicating whether the object on which you are calling it has a property with the name of the argument. For example:
var x = {
y: 10
};
console.log(x.hasOwnProperty("y")); //true
console.log(x.hasOwnProperty("z")); //false
However, it does not look at the prototype...
Where does Chrome store extensions?
...ome/Default/Extensions/
if you go to chrome://extensions you'll find the "ID" of each extension. That is going to be a directory within Extensions directory. It is there you'll find all of the extension's files.
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