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Can two Java methods have same name with different return types? [duplicate]
...name, the same type parameters (if any) (§8.4.4), and, after adapting the formal parameter types of N to the the type parameters of M, the same formal parameter types.
If both methods has different parameter types (so, they have different signature), then it is possible. It is called overloading....
How do I send a POST request as a JSON?
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If you don't specify the header, it will be the default application/x-www-form-urlencoded type.
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Maximum value for long integer
...here is no explicitly defined limit. The amount of available address space forms a practical limit.
(Taken from this site). See the docs on Numeric Types where you'll see that Long integers have unlimited precision. In Python 2, Integers will automatically switch to longs when they grow beyond their...
Specifying rails version to use when creating a new application
...N = '2.1.2' unless defined? RAILS_GEM_VERSION
or use the "rails" command form the version you want anyway.
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MySQL - UPDATE query based on SELECT Query
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The first form (update with join) is going to be a lot more efficient than the second. The first would do a single join, whereas the second would execute the select query for every row of tableA.
– ColinM
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How can I detect if the user is on localhost in PHP?
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Yeah, this is bad advice and in its current form and needs to be edited - or downvoted.
– Pekka
Aug 3 '13 at 8:40
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In an array of objects, fastest way to find the index of an object whose attributes match a search
...ly, the hash function I provide is not valid for all cases since '_' could form part of your values but it is just a quick example you can figure out different hash methods.
– Pablo Francisco Pérez Hidalgo
Sep 5 '14 at 10:12
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How to print last two columns using awk
...at the two examples of computing the field index in the spec both use that form: $(NF-1) and $(NF+2). Then there's the "Expressions in awk" section, which lists $expr as having [much] higher precedence than expr - expr. Since NF is an expression itself, $NF-1 should evaluate to ($NF)-1. Even IF, aft...
One-liner to take some properties from object in ES 6
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This is a convenient form of omit, but not pick
– kirilloid
May 11 '17 at 10:56
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What is the use of ByteBuffer in Java? [closed]
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The ByteBuffer class is important because it forms a basis for the use of channels in Java. ByteBuffer class defines six categories of operations upon byte buffers, as stated in the Java 7 documentation:
Absolute and relative get and put methods that read and wri...