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Why can't variable names start with numbers?
I was working with a new C++ developer a while back when he asked the question: "Why can't variable names start with numbers?"
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What are the differences between NP, NP-Complete and NP-Hard?
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I assume that you are looking for intuitive definitions, since the technical definitions require quite some time to understand. First of all, let's remember a preliminary needed concept to understand those definitions.
Decision problem: A problem with a ...
Representing null in JSON
What is the preferred method for returning null values in JSON? Is there a different preference for primitives?
7 Answers
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Regular Expression to find a string included between two characters while EXCLUDING the delimiters
...asy done", LOL! :) Regular expressions always give me headache, I tend to forget them as soon as I find the ones that solve my problems. About your solutions: the first works as expected, the second doesn't, it keeps including the brackets. I'm using C#, maybe the RegEx object has its own "flavour"...
What is the JavaScript convention for no operation?
What is the JavaScript convention for no operation? Like a Python pass command.
6 Answers
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Calling Python in Java?
...ng if it is possible to call python functions from java code using jython, or is it only for calling java code from python?
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Is False == 0 and True == 1 an implementation detail or is it guaranteed by the language?
...ue == 1 , in Python (assuming that they are not reassigned by the user)? For instance, is it in any way guaranteed that the following code will always produce the same results, whatever the version of Python (both existing and, likely, future ones)?
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How to check whether a string is Base64 encoded or not
I want to decode a Base64 encoded string, then store it in my database. If the input is not Base64 encoded, I need to throw an error.
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How to loop through array in jQuery?
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(Update: My other answer here lays out the non-jQuery options much more thoroughly. The third option below, jQuery.each, isn't in it though.)
Four options:
Generic loop:
var i;
for (i = 0; i < substr.length; ++i) {
// do something with `substr[i]`
}
or in ES2015+:
for (let i = ...
Does a finally block always run?
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from the Sun Tutorials
Note: If the JVM exits while the try
or catch code is being executed, then
the finally block may not execute.
Likewise, if the thread executing the
try or catch code is interrupted or
killed, the finally ...