Trident Help

RPN Power 48 manual · Chapter 13 of 19

Strings

Type text, join strings, take parts, reverse, and convert between text and numbers.

13.1Type a string#

A string is text between double quotes. Right shift 7 types the quotes. Lock alpha to type letters; press ◀ before a letter for lowercase. Numbers and symbols are typed with their normal keys when alpha is off.

Example 13.1

Type a string

  1. Right shift 7, lock alpha, type Hello, unlock, close, ENTER.

    ▶" "7ααMODE◀F5◀PREVNXT◀PREVNXT◀SYMB'α▶7ENTER
Result of the example "Type a string" The display shows: RAD { HOME } / 6: / 5: / 4: / 3: / 2: / 1: "Hello".
You should see"Hello"

13.2The STR menu#

STR page 1. The display shows: RAD { HOME } / 6: / 5: / 4: / 3: / 2: / 1: / →STR STR→ SIZE SUB POS HEAD .
STR page 1.
STR page 2. The display shows: RAD { HOME } / 6: / 5: / 4: / 3: / 2: / 1: / TAIL NUM CHR OBJ→ REVLI →TAG .
STR page 2.
CommandWhat it does
→STRTurn any object into a string.
STR→Turn a string into the object it describes.
SIZENumber of characters.
SUBA part of the string (string, first, last).
POSPosition of one string inside another.
HEAD, TAILFirst character; everything after it.
NUM, CHRCharacter code of the first character; the character for a code.
REVLISTReverse.
→TAG, DTAGAdd or remove a tag.
Example 13.2

Length of a string

  1. SIZE is the third key.

    ▶" "7ααMODE◀F5◀PREVNXT◀PREVNXT◀SYMB'α▶7ENTER▶STRVARF3
Result of the example "Length of a string" The display shows: RAD { HOME } / 6: / 5: / 4: / 3: / 2: / 1: 5 / →STR STR→ SIZE SUB POS HEAD .
You should see1: 5
Example 13.3

First character

  1. HEAD is the sixth key.

    ▶" "7ααMODE◀F5◀PREVNXT◀PREVNXT◀SYMB'α▶7ENTER▶STRVARF6
Result of the example "First character" The display shows: RAD { HOME } / 6: / 5: / 4: / 3: / 2: / 1: "H" / →STR STR→ SIZE SUB POS HEAD .
You should see"H"
Example 13.4

All but the first character

  1. TAIL is the first key of page 2.

    ▶" "7ααMODE◀F5◀PREVNXT◀PREVNXT◀SYMB'α▶7ENTER▶STRVARNXTF1
Result of the example "All but the first character" The display shows: RAD { HOME } / 6: / 5: / 4: / 3: / 2: / 1: "ello" / TAIL NUM CHR OBJ→ REVLI →TAG .
You should see"ello"
Example 13.5

Reverse a string

  1. REVLIST is the fifth key of page 2.

    ▶" "7ααMODE◀F5◀PREVNXT◀PREVNXT◀SYMB'α▶7ENTER▶STRVARNXTF5
Result of the example "Reverse a string" The display shows: RAD { HOME } / 6: / 5: / 4: / 3: / 2: / 1: "olleH" / TAIL NUM CHR OBJ→ REVLI →TAG .
You should see"olleH"
Example 13.6

Part of a string

  1. Type "abc", then 2 and 3, press SUB.

    ▶" "7αα◀F1◀F2◀F3α▶7ENTER2ENTER3ENTER▶STRVARF4
Result of the example "Part of a string" The display shows: RAD { HOME } / 6: / 5: / 4: / 3: / 2: / 1: "bc" / →STR STR→ SIZE SUB POS HEAD .
You should see"bc"
Example 13.7

Character code

  1. NUM gives 72 for H.

    ▶" "7ααMODEα▶7ENTER▶STRVARNXTF2
Result of the example "Character code" The display shows: RAD { HOME } / 6: / 5: / 4: / 3: / 2: / 1: 72 / TAIL NUM CHR OBJ→ REVLI →TAG .
You should see1: 72
Example 13.8

Character from a code

  1. CHR turns 65 into A.

    65▶STRVARNXTF3
Result of the example "Character from a code" The display shows: RAD { HOME } / 6: / 5: / 4: / 3: / 2: / 1: "A" / TAIL NUM CHR OBJ→ REVLI →TAG .
You should see"A"

13.3Join strings and values#

Example 13.9

Join two strings

  1. Type two strings and press +.

    ▶" "7ααMODE◀F5◀PREVNXT◀PREVNXT◀SYMB'α▶7ENTER▶" "7ααDEL◀SYMB'◀ACOSCOS◀PREVNXT◀F4α▶7ENTER+
Result of the example "Join two strings" The display shows: RAD { HOME } / 6: / 5: / 4: / 3: / 2: / 1: "HelloWorld".
You should see"HelloWorld"
Example 13.10

Join a number to a string

  1. Type 3 and a string, add.

    3ENTER▶" "7αα◀F1α▶7ENTER+
Result of the example "Join a number to a string" The display shows: RAD { HOME } / 6: / 5: / 4: / 3: / 2: / 1: "3a".
You should see"3a"

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