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BUILT-IN MATHEMATICA SYMBOL

StringReplacePart

replaces the characters at positions m through n in

inserts copies of

at several positions.

replaces characters at positions

through

StringReplacePart uses position specifications in the form returned by StringPosition. »

When a list of is given, its length must be the same as the length of the list of positions. »

When multiple positions are given, all refer to the original , before any replacements have been done.

Replace characters 2 through 5 with a new string:

Replace several sequences of characters with a new string:

Replace characters 2 through 5 with a new string:

Out[1]=

Replace several sequences of characters with a new string:

Out[1]=

Negative positions count from the end:

Replace two sequences of characters with two new strings:

Simulating a multiway system

The evolution of a multiway system:

This is equivalent to StringReplace:

Replacing with an empty string is equivalent to StringDrop:

StringReplacePart can drop several sequences of characters at a time:

Use position

to insert at position n, without overwriting anything:

StringInsert can do the same:

The position specifications are not allowed to overlap: