JQ Cheat Sheet
by Orabig via cheatography.com/55627/cs/14790/
Basic filters
. IDentity
.foo
.foo?
Value of "๎fo
๎
o" key
.[] .
[]?
Array iterator. Produce each element of
an input array, or each value of an
object
.[n]n element of an array (n can be
negative : -1 -> last elemen๎t...)
.
[n:m]
Array slice : array containing n
(inclu๎sive) to m (exclu๎sive) elements
A,BProduces output of filter A then B (both
A and B are fed with the same input)
A|BOutput of A is sent to B's input
( A ) Grouping operator
Types and Values
[ ], { } Array (resp. Object)
constr๎uction
.. Recursive descent
+ - * / % Basic arithmetic / string
/ array / object
operators
length string / array / object
length
keys | keys_unsorted The sorted๎/un๎sorted set
of the input object keys.
has( KEY ) Whether the input
object as the given
KEY.
in( A ) Whether the input key
is in the given A object.
map ( A ) Run the A filter for each
element of the input
array. Equivalent to [.[] |
A]
Types and Values (cont)
map_va๎lues(
A )
Run the A filter for each
element of the input object.
Equivalent to .[] |=A
del ( x ) Removes a key and its value
from an object
select ( foo ) Produces input unchanged if
foo is true for that input.
type Returns the type of its
argument as a string.
arrays,
objects,
iterables,
booleans,
numbers,
normals,
finites,
strings,
nulls, values,
scalars
These built-ins select only
inputs that are arrays, objects,
iterables (arrays or objects),
booleans, numbers, normal
numbers, finite numbers,
strings, null, non-null values,
and non-it๎era๎bles,
respec๎tively.
empty Produces no output.
$__loc__ Produces an object with a โfileโ
key and a โlineโ key
add Produces the summed
elements of the input array
any, any( foo
)
Produces true if any of the
elements of the input array
(resp foo) is true
all, all( foo ) Produces true if all of the
elements of the input array
(resp foo) is true
range( [from
;] upto [; by] )
Produces a range of numbers
(upto is exclusive)
Types and Values (cont)
floor, sqrt Returns the floor (resp square
root) of its numeric input
tonumber Converts into to number
infinite, nan,
isinfi๎nite,
isnan,
isfinite,
isnormal
Returns true depending of the
input
sort |
sort_by( foo
)
Sorts the input array (null < false
< true < numbers < strings <
arrays < objects)
group_by(
foo )
Groups the elements of the
input array having the same foo
value into separate arrays
(sorted by foo values)
min | max |
min_by( foo
) |
max_by๎(fo
o)
Finds the minimum (resp
maximum) element of the input
array
unique,
unique_by(
foo )
Produces an array of unique
element of the input array.
reverse Reverses an array
contains(
foo )
Produces true if foo is
completely contained within the
input.
indices( foo
)
Outputs an array containing the
indices in . where foo occurs.
inside( foo ) produce true if the input is
completely contained within foo
combin๎ation
s
Production all combin๎ations of
an array
By Orabig
cheatography.com/orabig/
Published 5th March, 2018.
Last updated 5th March, 2018.
Page 1 of 2.
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