% | ( <a> <b> -- <c> ) Modulo two numeric values. In standard notation: a % b = c |
* | ( <a> <b> -- <c> ) Multiply two numeric values. |
+ | ( <a> <b> -- <c> ) Add two numeric values. |
- | ( <a> <b> -- <c> ) Subtract two numeric values. In standard notation: a - b = c |
... | ( <original> -- ? ) Unpack a quote. |
.s | ( -- ) Print the state of the process: all available values. |
/ | ( <a> <b> -- <c> ) Divide two numeric values. In standard notation: a / b = c |
: | ( ... [<name>] -- ) Bind variables to a quote of names. |
abs | ( <a> -- <b> ) Determine the absolute value of a number. |
alias | ( <prevname> <newname> -- ) Alias a new command from another, copying the description of the previous command. |
and | ( <a> <b> -- <bool> ) Determine if two values are both truthy. |
any? | ( <original> <condition> -- <bool> ) Determine whether any value in a quote passes a condition. Stops at the first truthy result. |
anything? | ( -- <bool> ) True if any value is present. |
appendf | ( <contents> <filename> -- ) Write a string to a file. If a file previously existed, the new content will be appended. |
args | ( -- [<arg>] ) Produce the arguments provided to the process when it was launched. |
assert-true | ( <cond> <message> -- ) Naive assertion that requires a condition to be truthy. If falsy, it will print a message to standard error and fail with an exit code of 1. |
cd | ( <dirname> -- ) Change the process's working directory. |
chars | ( <string> -- [<substring>] ) Splits a string into individual characters, where a character is a single byte. (Not friendly to UTF-8 runes.) |
concat | ( [<a>] [<b>] -- [<c>] ) Concatenate two quotes. Values are coerced into quotes. (For String concatenation, see join.) |
contains? | ( <haystack> <needle> -- <bool> ) With Strings, determine if a string contains a substring. With quotes, determine if a quote contains a value. |
cwd | ( -- <dirname> ) Produce the current working directory. |
def | ( <action> <name> -- ) Define a command. |
def! | ( <action> <name> -- ) Defines a new command. If nested, any commands or variables defined will be available in the calling scope. |
def-usage | ( <name> <description> -- ) Define the usage notes of a given command. |
def? | ( <name> -- <bool> ) Determine whether a command is defined. |
define | ( <action> <description> <name> -- ) Define a command with a description. |
defs | ( -- [<name>] ) Produce a quote of all defined commands. |
deq | ( [<a>] -- <b> [<c>] ) Dequeue the first value from a quote. |
divisor? | ( <a> <b> -- <bool> ) Determine if a number a is evenly divisible by number b. |
do | ( <action> -- ? ) Execute an action. |
do! | ( <action> -- ? ) Execute an action. If nested, any commands or variables defined will be available in the calling scope. |
do!? | ( <action> <condition> -- ? ) Conditionally execute an action. If nested, any commands or variables defined will be available in the calling scope. |
do? | ( <action> <condition> -- ? ) Conditionally execute an action. |
doin | ( <context> <action> -- ) Execute an action in a context. |
downcase | ( <string> -- <lower> ) Convert a string to its lowercase form. |
drop | ( <a> -- ) Drop the most recent value. |
dup | ( <a> -- <a> <a> ) Duplicate the most recent value. |
each | ( [<a>] <action> -- ) Perform a given action with each value in a quote. |
ends-with? | ( <string> <suffix> -- <bool> ) Determine if a string ends with a suffix. |
enl | ( -- ) Print a newline to standard error. |
enq | ( <a> [<b>] -- [<c>] ) Enqueue a value into a quote as its new first value. |
ep | ( <a> -- ) Print the most recent value to standard error. |
epl | ( <a> -- ) Print the most recent value and a newline to standard error. |
epls | ( [<a>] -- ) Print the values of the most recent quote, each followed by a newline, to standard error. |
eprint | ( <a> -- ) Print the most recent value to standard error. |
eprintln | ( <a> -- ) Print the most recent value and a newline to standard error. |
eprintlns | ( [<a>] -- ) Print the values of the most recent quote, each followed by a newline, to standard error. |
eq? | ( <a> <b> -- <bool> ) Determine if two values are equal. Works for most types with coersion. |
eval | eval |
even? | ( <a> -- <bool> ) Determine if a number is even. |
exec | ( <process> -- ) Execute a child process (from a String). When successful, returns stdout as a string. When unsuccessful, prints the child's stderr to stderr, and returns boolean false. |
exit | ( <exitcode> -- ) Exit with the specified exit code. |
filter | ( <original> <condition> -- <preserved> ) Require some condition of all values in a quote. Truthy results are preserved, and falsy results are not. |
first | ( [<a>] -- <b> ) The first element of a quote. |
green | ( -- ) Print a control character for green and bold (for the colorblind) to standard output and standard error. |
gt? | ( <a> <b> -- <bool> ) Determine if a value is greater than another. In standard notation: a > b |
gte? | ( <a> <b> -- <bool> ) Determine if a value is greater-than/equal-to another. In standard notation: a ≧ b |
help | ( -- ) Print commands and their usage |
inspire | ( -- <wisdom> ) Get inspiration. |
interactive? | ( -- <bool> ) Determine if the input mode is interactive (a TTY) or not. |
join | ( [<substring>] <delim> -- <string> ) Join strings with a delimiter. |
last | ( [<a>] -- <b> ) The last element of a quote. |
len | ( <a> -- <length> ) The length of a string or quote. (Always 1 for single values.) |
lines | ( <string> -- [<substring>] ) Splits a string on newlines. |
ls | ( -- [<filename>] ) Produce a quote of files and directories in the process's working directory. |
lt? | ( <a> <b> -- <bool> ) Determine if a value is less than another. In standard notation: a < b |
lte? | ( <a> <b> -- <bool> ) Determine if a value is less-than/equal-to another. In standard notation: a ≦ b |
map | ( <original> <action> -- <transformed> ) Apply an action to all values in a quote. |
nand | ( <a> <b> -- <bool> ) Determine if two values are not both truthy. |
neq? | ( <a> <b> -- <bool> ) Determine if two values are unequal. |
nl | ( -- ) Print a newline to standard output. |
nor | ( <a> <b> -- <bool> ) Determine if neither of two values are truthy. |
norm | ( -- ) Print a control character to reset any styling to standard output and standard error. |
not | ( <a> -- <bool> ) Determine the inverse truthiness of a value. |
odd? | ( <a> -- <bool> ) Determine if a number is odd. |
or | ( <a> <b> -- <bool> ) Determine if either of two values are truthy. |
p | ( <a> -- ) Print the most recent value to standard output. |
parse-csv | ( <string> -- [[<cells>]] ) Naive conversion of a raw string in comma-separated value (CSV) format to a quote of lines of cells |
pl | ( <a> -- ) Print the most recent value and a newline to standard output. |
pls | ( [<a>] -- ) Print the values of the most recent quote, each followed by a newline, to standard output. |
pop | ( [<a>] -- [<b>] <c> ) Pop the last value from a quote. |
print | ( <a> -- ) Print the most recent value to standard output. |
println | ( <a> -- ) Print the most recent value and a newline to standard output. |
printlns | ( [<a>] -- ) Print the values of the most recent quote, each followed by a newline, to standard output. |
procname | ( -- <name> ) Produce the name of the current process. This can be used, for example, to get the name of a shebang script. |
push | ( [<a>] <b> -- [<c>] ) Push a value into a quote as its new last value. |
pwd | ( -- ) Print the current working directory to standard output. |
quit | ( -- ) Quit. Prints a warning if there are any values left on stack. |
quote | ( <a> -- [<a>] ) Quote a value. |
quote-all | ( ? -- [<?>] ) Quote all current context. |
rand | ( -- <a> ) Produces a random integer. |
read-line | ( -- <line> ) Read a string from standard input until newline. |
read-lines | ( -- [<line>] ) Read strings, separated by newlines, from standard input until EOF. (For example: until ctrl+d in a unixy system, or until a pipe is closed.) |
readf | ( <filename> -- <contents> ) Read a file's contents as a string. |
red | ( -- ) Print a control character for red to standard output and standard error. |
repl | repl |
rev | ( <original> -- <reversed> ) Reverse a quote or string. Other types are unmodified. |
rot | ( <a> <b> <c> -- <c> <a> <b> ) Rotate the three most recent values. |
shebang-args | shebang-args |
sort | ( [<a>] -- [<b>] ) Sort a list of values. When values are of different type, they are sorted in the following order: bool, int, float, string, command, deferred command, quote. |
split | ( <string> <delim> -- [<substring>] ) Split a string on all occurrences of a delimiter. |
starts-with? | ( <string> <prefix> -- <bool> ) Determine if a string starts with a prefix. |
status | ( -- ) Print the state of the process: all available values. |
swap | ( <a> <b> -- <b> <a> ) Swap the two most recent values. |
times | ( <action> <n> -- ? ) Perform a given action n times. |
to-bool | ( <a> -- <bool> ) Coerce a value to a boolean. |
to-cmd | ( <a> -- <cmd> ) Coerce a value to a command. |
to-def | ( <a> -- <def> ) Coerce a value to a deferred command. (Read as "definition" or "deferred".) |
to-float | ( <a> -- <float> ) Coerce a value to a floating-point number. |
to-int | ( <a> -- <int> ) Coerce a value to an integer. |
to-quote | ( <a> -- [<a>] ) Coerce value to a quote. To quote a quote, use quote. |
to-string | ( <a> -- <string> ) Coerce a value to a string. |
undef? | ( <name> -- <bool> ) Determine whether a command is undefined. |
unlines | ( [<substring>] -- <string> ) Joins strings with newlines. |
unquote | ( <original> -- ? ) Unpack a quote. |
unwords | ( [<substring>] -- <string> ) Joins strings with spaces. |
upcase | ( <string> -- <upper> ) Convert a string to its uppercase form. |
usage | ( <name> -- <description> ) Print the usage notes of a given command. |
version | ( -- <version> ) Produce the version of dt in use. |
while | ( <action> <cond> -- ? ) Perform an action while the condition is truthy. |
words | ( <string> -- [<substring>] ) Splits a string on spaces. |
writef | ( <contents> <filename> -- ) Write a string as a file. If a file previously existed, it will be overwritten. |