September 2017 Update

Task/Apply-a-callback-to-an-array/Jq/apply-a-callback-to-an-array-1.jq

@@ -0,0 +1,14 @@
+# Illustration of map/1 using the builtin filter: exp
+map(exp)  # exponentiate each item in the input list
+
+# A compound expression can be specified as the argument to map, e.g.
+map( (. * .) + sqrt ) # x*x + sqrt(x)
+
+# The compound expression can also be a composition of filters, e.g.
+map( sqrt|floor )     # the floor of the sqrt
+
+# Array comprehension
+reduce .[] as $n ([]; . + [ exp ])
+
+# Elementwise operation
+ [.[] + 1 ]   # add 1 to each element of the input array

Task/Apply-a-callback-to-an-array/Jq/apply-a-callback-to-an-array-2.jq

@@ -0,0 +1,3 @@
+$ jq -c ' [.[] + 1 ]'
+[0, 1 , 10]
+[1,2,11]