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How do you check if a JavaScript Object is a DOM Object?
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This might be of interest:
function isElement(obj) {
try {
//Using W3 DOM2 (works for FF, Opera and Chrome)
return obj instanceof HTMLElement;
}
catch(e){
//Browsers not supporting W3 DOM2 don't have HTMLElem...
Inner class within Interface
Is it possible to create an inner class within an interface?
If it is possible why would we want to create an inner class like that since
we are not going to create any interface objects?
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What does $$ mean in the shell?
...name in a shell for temp files was to use a double dollar sign ( $$ ). This does produce a number that varies from time to time... but if you call it repeatedly, it returns the same number. (The solution is to just use the time.)
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Batch file to delete files older than N days
...and others that required installing extra command line utilities to accomplish the task.
23 Answers
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Is #pragma once part of the C++11 standard?
...e standard and portable way to avoid multiple header inclusions in C++ was/is to use the #ifndef - #define - #endif pre-compiler directives scheme also called macro-guard scheme (see code snippet below).
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What new capabilities do user-defined literals add to C++?
...terals which will allow the introduction of new literal syntax based on existing literals ( int , hex , string , float ) so that any type will be able to have a literal presentation.
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Make xargs execute the command once for each line of input
...e command exactly once for each line of input given?
It's default behavior is to chunk the lines and execute the command once, passing multiple lines to each instance.
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python: How do I know what type of exception occurred?
... catch generic exceptions, but no one seems to want to tell you why, which is essential to understanding when you can break the "rule". Here is an explanation. Basically, it's so that you don't hide:
the fact that an error occurred
the specifics of the error that occurred (error hiding antipatter...
How is the default max Java heap size determined?
...+PrintFlagsFinal -version | grep HeapSize
I believe the resulting output is in bytes.
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What is the difference between and ?
What is the difference between <html lang="en"> and <html lang="en-US"> ? What other values can follow the dash?
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