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How do I define a method which takes a lambda as a parameter in Java 8?
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Lambdas are purely a call-site construct: the recipient of the lambda does not need to know that a Lambda is involved, instead it accepts an Interface with the appropriate method.
In other words, you define or use a functional interface (i.e. an ...
Gradle alternate to mvn install
...al()
}
dependencies {
compile "foo:sdk:1.0"
}
$sdk> gradle install
$example> gradle build
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Is returning null bad design? [closed]
... I were to define a method in Java that returned a Collection I would typically prefer to return an empty collection (i.e. Collections.emptyList()) rather than null as it means my client code is cleaner; e.g.
Collection<? extends Item> c = getItems(); // Will never return null.
for (Item ite...
rails simple_form - hidden field - create?
... then just use Rails' hidden_field form builder since Simple Form inherits all the form builder methods.
– scarver2
Nov 4 '14 at 1:18
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Check whether a string contains a substring
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This way is especially preferrable, when you are searching using a variable - this way you won't have to double-escape characters (in this variable string), that are special for regular expressions (like :).
– evgeny9
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What is the difference between 'content' and 'text'
...ose that there would be a difference for a non-text response. But where is all this documented? Note that the linked document does state:
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Rails 3 datatypes?
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Here are all the Rails3 (ActiveRecord migration) datatypes:
:binary
:boolean
:date
:datetime
:decimal
:float
:integer
:primary_key
:references
:string
:text
:time
:timestamp
Source
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How to show current year in view?
...ht it might come handy for those who want to look at benchmark results for all the suggested solutions.
require 'benchmark'
n = 500000
Benchmark.bm do |x|
x.report { n.times do ; Date.today.year; end }
x.report { n.times do ; Date.current.year; end }
x.report { n.times do ; Time.current.year...
Difference between “on-heap” and “off-heap”
...y point to). This is important because a direct ByteBuffer (the ByteBuffer.allocateDirect kind, not the MMap kind) will be collected by the GC and when it gets collected it's Deallocater will get triggered, effectively collecting the unmanaged memory as well.
– Nitsan Wakart
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Git Gui: Perpetually getting “This repository currently has approximately 320 loose objects.”
...od disk space utilization and good operating performance.
--aggressive
Usually git gc runs very quickly while providing good disk space utilization and performance. This option will cause git gc to more aggressively optimize the repository at the expense of taking much more time. The effects of thi...