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What is the reason behind cbegin/cend?
I wonder why cbegin and cend were introduced in C++11?
7 Answers
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Javascript object Vs JSON
...worth noting that a key in JSON must be enclosed in double quotes.
If I convert the above object to JSON using var jSonString = JSON.stringify(testObject);, what is the difference between the 2 (JS obj and JSON)?
JSON is a data interchange format. It's a standard which describes how ordered lis...
Condition within JOIN or WHERE
...u only those records that have an order dated later than May 15, 2009 thus converting the left join to an inner join.
The second will give those records plus any customers with no orders. The results set is very different depending on where you put the condition. (Select * is for example purposes on...
What does the “map” method do in Ruby?
...example:
names = ['danil', 'edmund']
# here we map one array to another, convert each element by some rule
names.map! {|name| name.capitalize } # now names contains ['Danil', 'Edmund']
names.each { |name| puts name + ' is a programmer' } # here we just do something with each element
The output:...
What is the difference between atomic / volatile / synchronized?
...return counter++;
}
It basically reads value from memory, increments it and puts back to memory. This works in single thread but nowadays, in the era of multi-core, multi-CPU, multi-level caches it won't work correctly. First of all it introduces race condition (several threads can read the value...
How to use null in switch
... Integer or other Wrapper class, because of unboxing. But what about enums and strings? Why can't they be null?
– Luan Nico
Nov 2 '13 at 11:20
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JSON Array iteration in Android/Java
I am building an android app that needs to download and synchronise with an online database, I am sending my query from the app to a php page which returns the relevant rows from a database in JSON format.
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How to get whole and decimal part of a number?
Given, say, 1.25 - how do I get "1" and ."25" parts of this number?
16 Answers
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How does comparison operator works with null int?
I am starting to learn nullable types and ran into following behavior.
4 Answers
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Randomize a List
What is the best way to randomize the order of a generic list in C#? I've got a finite set of 75 numbers in a list I would like to assign a random order to, in order to draw them for a lottery type application.
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