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How to iterate through two arrays in zsh?
Say I have two arrays in zsh with the same unknown # of elements and each of them containing a list of paths, e.g. I would like to iterate through both arrays simultaneously with a common index, so that I can do something like:
Is it possible to iteration with index in zsh?
Iteration with index does not work for the zsh. For the educational purpose, I use the variables INDEX_START and INDEX_OFFSET to accomplish identical results. To compare the two outputs, if your eye doesn’t see the difference ＼ ٩ ( ᐛ )و /／.
How are array subscripts defined in zsh Stack Exchange?
Section 15.2.1 “Array Subscripts” says that arrays can be index with [exp] (where exp is a numeric expression) and that elements start at index 1 (0 if KSH_ARRAYS is set). Section 14.3 “Parameter Expansion” says that the syntax $ {#array_name} will expand to the number of elements of an array.
What are the advantages of using zsh over Bash 3?
One of the advantages of zsh over bash 3 is the support of “associative arrays,” a data structure known as hash tables or dictionaries in other languages. In associative arrays, you can store a piece of data, or value with an identifying ‘key’. For example, the associative array userinfo has multiple values, each identified with a key:
How to declare a variable as an associative array in zsh?
In zsh, before you can use a variable as an associative array, you have to declare it as one with This will tell the shell that the userinfo variable is an associative array. You can also use typeset -A as an alternative syntax. You can verify the type of the variable:
How are for loops used in Bash and zsh?
Ksh, bash and zsh have an alternate form of for: for ( (i = 0; i < 42; i++)); do somecommand; done, which mimics the for loops of languages like Pascal or C, to enumerate integers. Other exotic forms that exist in zsh are specific to zsh (but often inspired by csh).