Standard Library
hex comes with a standard library providing common functionality implemented in hex itself.
At present, it only comprises utils.hex, a collection of common utility symbols, which is distributed
in .hbx format along with the hex executable.
To pre-load this file, you can start hex like this:
hex -l utils.hbxStandard Utilities (utils.hex)
This file contains a collection of standardized utility symbols extending the native symbols of the hex programming language.
Input/Output Symbols↑
These additional symbols are used for input and output operations.
dputs Symbol↑
a → a
Duplicates and prints the top item on the stack followed by a new line.
Control Flow Symbols↑
These symbols are used for controlling the flow of execution in a program.
unless Symbol↑
q1 q2 → *
If q1 pushes $0 on the stack, dequotes q2.
when Symbol↑
q1 q2 → *
If q1 pushes $1 on the stack, dequotes q2.
Quotation Symbols↑
These additional symbols are used for manipulating quotations.
cons Symbol↑
a q1 → q2
Prepends a to the beginning of q1.
each Symbol↑
q1 q2 → *
Applies q2 to each element of q1.
filter Symbol↑
q1 q2→ q3
Returns q3 containing only the elements of q1 that satisfy q2.
max Symbol↑
q → a
Pushes the maximum item of q on the stack.
min Symbol↑
q → a
Pushes the minimum item of q on the stack.
pop Symbol↑
q1 → q2
Removes the last item at the end of q1.
push Symbol↑
q1 a → q2
Appends a to the end of q1.
rem Symbol↑
q1 i → q2
Removes the item at index i of q1.
reverse Symbol↑
q1 → q2
Reverses the order of the items in a quotation.
set Symbol↑
q1 a i → q2
Sets the item at index i of q1 to a.
sort Symbol↑
q1 q2 → q3
Sorts the items of q1 based on the comparison quotation q2 (must push $0 or $1 on the stack).
swons Symbol↑
q1 a → q2
Prepends a to the beginning of q1.
times Symbol↑
q i → *
Execute quotation q i times.
uncons Symbol↑
q1 → a q2
Removes the first item from q1 and pushes it on the stack along with q2 containing the rest of the items of q1.
unswons Symbol↑
q1 → q2 a
Removes the first item from q1 and pushes it on the stack along with q2 containing the rest of the items of q1.
Stack Management Symbols↑
These additional symbols are used for manipulating the stack.
dip Symbol↑
a1 (a2) → a2 a1
Dequotes the first item on the stack and restores the second item on top.
over Symbol↑
a1 a2 → a1 a2 a1
Copies the second item on the stack and pushes it on top
String Symbols↑
These additional symbols are used for manipulating strings.
begins Symbol↑
s1 s2 → s3
Pushes $1 on the stack if s1 begins with s2, or $0 otherwise.
ends Symbol↑
s1 s2 → s3
Pushes $1 on the stack if s1 ends with s2, or $0 otherwise.
fmt Symbol↑
s1 q → s2
Substitutes ${0} to ${9} placeholders in s1 with items in q.
gsub Symbol↑
s1 s2 s3 → s4
Replaces all occurrences of s2 with s3 in s1.
slice Symbol↑
s1 i1 i2 → s2
Extracts the portion of the string between indices i1 and i2.