| % | ( <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 coercion. |
| 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 Unix-like 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. |