Class: RedShift::DVector
- Includes:
- Enumerable
- Defined in:
- ext/redshift/dvector/dvector.rb
Overview
A linear collection of objects, like Array.
Intended primarily for access from C code, using the inline rs_dv_push() and rs_dv_pop() functions.
Implements some of the same methods as Array, but not all.
Like an Array, a DVector grows implicitly as elements are pushed. But unlike an Array, a DVector shrinks only explicitly. This is to minimize realloc() calls when a DVector rapidly grows and shrinks.
Class Method Summary collapse
Instance Method Summary collapse
- #==(other) ⇒ Object
- #_dump_data ⇒ Object
- #_load_data(from_array) ⇒ Object
- #dup ⇒ Object
- #each ⇒ Object
- #eql?(other) ⇒ Boolean
- #hash ⇒ Object
-
#initialize(elts = nil) ⇒ DVector
constructor
A new instance of DVector.
- #inspect ⇒ Object
- #length ⇒ Object (also: #size)
- #pop ⇒ Object
- #push(*args) ⇒ Object (also: #<<)
- #to_a ⇒ Object
- #to_s ⇒ Object
Constructor Details
#initialize(elts = nil) ⇒ DVector
Returns a new instance of DVector.
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# File 'ext/redshift/dvector/dvector.rb', line 23 def initialize(elts=nil) push(*elts) if elts end |
Class Method Details
.[](*elts) ⇒ Object
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# File 'ext/redshift/dvector/dvector.rb', line 19 def self.[](*elts) new elts end |
Instance Method Details
#==(other) ⇒ Object
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# File 'ext/redshift/dvector/dvector.c', line 121
static VALUE dv_method_equal(VALUE self, VALUE other)
{
RS_DVector *dv1, *dv2;
if (self == other) return Qtrue;
if (CLASS_OF(self) != CLASS_OF(other)) return Qfalse;
Data_Get_Struct(self, RS_DVector, dv1);
Data_Get_Struct(other, RS_DVector, dv2);
if (dv1->len != dv2->len) return Qfalse;
if (dv1->len == 0) return Qtrue;
return rb_exec_recursive(recursive_equal, self, other);
}
|
#_dump_data ⇒ Object
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# File 'ext/redshift/dvector/dvector.c', line 193
static VALUE dv_method_dump_data(VALUE self)
{
RS_DVector *dv;
Data_Get_Struct(self, RS_DVector, dv);
return dv->ptr ? rb_ary_new4(dv->len, dv->ptr) : rb_ary_new();
}
|
#_load_data(from_array) ⇒ Object
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# File 'ext/redshift/dvector/dvector.c', line 200
static VALUE dv_method_load_data(VALUE self, VALUE from_array)
{
long i;
RS_DVector *dv;
Data_Get_Struct(self, RS_DVector, dv);
for (i=0; i < RARRAY_LEN(from_array); i++) {
rs_dv_push(dv, RARRAY_PTR(from_array)[i]);
}
return self;
}
|
#dup ⇒ Object
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# File 'ext/redshift/dvector/dvector.rb', line 30 def dup self.class.new to_a end |
#each ⇒ Object
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# File 'ext/redshift/dvector/dvector.c', line 76
static VALUE dv_method_each(VALUE self)
{
long i;
RS_DVector *dv;
Data_Get_Struct(self, RS_DVector, dv);
RETURN_ENUMERATOR(self, 0, 0);
for (i=0; i < dv->len; i++) {
rb_yield(dv->ptr[i]);
}
return self;
}
|
#eql?(other) ⇒ Boolean
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# File 'ext/redshift/dvector/dvector.c', line 152
static VALUE dv_method_eql(VALUE self, VALUE other)
{
RS_DVector *dv1, *dv2;
if (self == other) return Qtrue;
if (CLASS_OF(self) != CLASS_OF(other)) return Qfalse;
Data_Get_Struct(self, RS_DVector, dv1);
Data_Get_Struct(other, RS_DVector, dv2);
if (dv1->len != dv2->len) return Qfalse;
if (dv1->len == 0) return Qtrue;
return rb_exec_recursive(recursive_eql, self, other);
}
|
#hash ⇒ Object
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# File 'ext/redshift/dvector/dvector.c', line 188
static VALUE dv_method_hash(VALUE self)
{
return rb_exec_recursive(recursive_hash, self, 0);
}
|
#inspect ⇒ Object
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# File 'ext/redshift/dvector/dvector.rb', line 27 def inspect; to_a.inspect; end |
#length ⇒ Object Also known as: size
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# File 'ext/redshift/dvector/dvector.c', line 98
static VALUE dv_method_length(VALUE self)
{
RS_DVector *dv;
Data_Get_Struct(self, RS_DVector, dv);
return INT2NUM(dv->len);
}
|
#pop ⇒ Object
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# File 'ext/redshift/dvector/dvector.c', line 67
static VALUE dv_method_pop(VALUE self)
{
RS_DVector *dv;
Data_Get_Struct(self, RS_DVector, dv);
return rs_dv_pop(dv);
}
|
#push(*args) ⇒ Object Also known as: <<
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# File 'ext/redshift/dvector/dvector.c', line 53
static VALUE dv_method_push(int argc, VALUE *argv, VALUE self)
{
int i;
RS_DVector *dv;
Data_Get_Struct(self, RS_DVector, dv);
for (i = 0; i < argc; i++) {
rs_dv_push(dv, argv[i]);
}
return self;
}
|
#to_a ⇒ Object
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# File 'ext/redshift/dvector/dvector.c', line 91
static VALUE dv_method_to_a(VALUE self)
{
RS_DVector *dv;
Data_Get_Struct(self, RS_DVector, dv);
return dv->ptr ? rb_ary_new4(dv->len, dv->ptr) : rb_ary_new();
}
|
#to_s ⇒ Object
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# File 'ext/redshift/dvector/dvector.rb', line 28 def to_s; to_a.to_s; end |