abstract class Object

Overview

Object is the base type of all Crystal objects.

Defined in:

crystal_on_steroids/dig.cr
crystal_on_steroids/object.cr
crystal_on_steroids/to_query.cr

Instance Method Summary

Instance Method Detail

def blank? #

An object is blank if it's false, empty, or an empty string. For example, false, "", nil, [], and {} are all blank.

@return [true, false]

source: Rails ActiveSupport


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def dig?(index, *keys) #

Retrieves the value object corresponding to the each key objects repeatedly. The type needs to implement #[]? method to works.

h = { foo: {bar: {baz: 5}}}

h.dig?(:foo, :bar, :baz)           #=> 5
h.dig?(:foo, :blah)                #=> nil

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def dig? #

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def in?(another_object) #

Returns true if this object is included in the argument. Argument must be any object which responds to #include?. Usage:

characters = ["Konata", "Kagami", "Tsukasa"]
"Konata".in?(characters) # => true

source: Rails ActiveSupport


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def presence #

Returns the receiver if it's present otherwise returns nil. object.presence is equivalent to

object.present? ? object : nil

@return [Object]

source: Rails ActiveSupport


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def presence_in(another_object) #

Returns the receiver if it's included in the argument otherwise returns nil. Argument must be any object which responds to #include?. Usage:

params[:bucket_type].presence_in %w( project calendar )

source: Rails ActiveSupport


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def present? #

An object is present if it's not blank.

@return [true, false]

source: Rails ActiveSupport


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def to_param #

Alias for to_s


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def to_query(key) #

Converts an object into a string suitable for use as a URL query string, using the given key as the param name.


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def to_query #

Converts an object into a string suitable for use as a URL query string, no key provided


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