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What does this symbol mean in JavaScript?
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See the documentation on MDN about expressions and operators and statements.
Basic keywords and general expressions
this keyword:
How does the "this" keyword work?
var x = function() vs. function x() — Function declaration syntax
var functionName = function() {} vs functio...
When to use os.name, sys.platform, or platform.system?
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Dived a bit into the source code.
The output of sys.platform and os.name are determined at compile time. platform.system() determines the system type at run time.
sys.platform is specified as a compiler define during the build configuration.
os.name checks whether certain os spec...
Sorting a vector of custom objects
How does one go about sorting a vector containing custom (i.e. user defined) objects.
Probably, standard STL algorithm sort along with a predicate (a function or a function object) which would operate on one of the fields (as a key for sorting) in the custom object should be used.
Am I on the ...
Creating a “logical exclusive or” operator in Java
Java has a logical AND operator.
Java has a logical OR operator.
Java has a logical NOT operator.
17 Answers
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Is There a Better Way of Checking Nil or Length == 0 of a String in Ruby?
...s there a better way than the following to check to see if a string is nil OR has a length of 0 in Ruby?
16 Answers
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Regular expression to match numbers with or without commas and decimals in text
...ne are perfect yet. The problem I have is that the numbers in my text may or may not have decimals and commas. For example:
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Jackson serialization: ignore empty values (or null)
I'm currently using jackson 2.1.4 and I'm having some trouble ignoring fields when I'm converting an object to a JSON string.
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How to find the lowest common ancestor of two nodes in any binary tree?
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Nick Johnson is correct that a an O(n) time complexity algorithm is the best you can do if you have no parent pointers.) For a simple recursive version of that algorithm see the code in Kinding's post which runs in O(n) time.
But keep in min...
Regex exactly n OR m times
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There is no single quantifier that means "exactly m or n times". The way you are doing it is fine.
An alternative is:
X{m}(X{k})?
where m < n and k is the value of n-m.
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REST URI convention - Singular or plural name of resource while creating it
...ve observed that in some RESTful services they use different resource URI for update/get/delete and Create. Such as
22 Answ...