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extra-object
extra-object
has
Function has
has
(
x
:
object
, k
:
string
)
:
boolean
Check if object has a key.
Returns
[k, *] ∈ x?
Parameters
x:
object
an object
k:
string
search key
Returns
boolean
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extra-
object
entry
has
Key
key
length
subset
Combine
Function
Compare
Function
End
Function
Entries
Lists
Map
Function
Process
Function
Read
Function
Reduce
Function
Test
Function
cartesian
Product
chunk
compare
concat
concat$
count
count
As
difference
difference$
drop
drop$
entries
every
filter
filter$
filter
At
filter
At$
find
find
All
flat
flat
Map
for
Each
from
Entries
from
Lists
get
get
All
get
Path
has
has
Entry
has
Path
has
Subset
has
Value
head
intersection
intersection$
intersection
Keys
is
is
Disjoint
is
Empty
is
Equal
join
keys
map
map$
max
max
Entry
min
min
Entry
partition
partition
As
random
Entry
random
Key
random
Subset
range
range
Entries
reduce
reject
reject$
reject
At
reject
At$
remove
remove$
remove
Path$
search
search
All
search
Value
search
Value
All
set
set$
set
Path$
size
some
subsets
swap
swap$
symmetric
Difference
symmetric
Difference$
tail
take
take$
union
union$
union
Keys
values
zip
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Check if object has a key.
Returns
[k, *] ∈ x?