76 lines
1.7 KiB
Markdown
76 lines
1.7 KiB
Markdown
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-----
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isHidden: false
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menupriority: 1
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kind: article
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created_at: 2011-09-27T15:15:23+02:00
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title: Higher order function in zsh
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author_name: Yann Esposito
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author_uri: yannesposito.com
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# tags:
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-----
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<%= blogimage("main.png","Title image") %>
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begindiv(intro)
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<%= tldr %> some simple implementation of higher order function for zsh.
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enddiv
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<code class="zsh">
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# for each directory in projects dir
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for toProject in /path/to/projects/*(/N); do
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# toProject is /path/to/projects/foo
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# project become foo (:t for tail)
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project=${toProject:t}
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for toResource in $toProject/resources/*.gif(.N); do
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convert $toResource ${toResource:r}.png
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\rm -f $toResource
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done
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done
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</code>
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<code class="zsh">
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gif_to_png() { convert $1 ${1:r}.png && \rm -f $1 }
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handle_resources() { map gif_to_png $1/resources/*.gif(.N) }
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map handle_resources /path/to/projects/*(/N)
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</code>
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<code class="zsh">
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for toProject in Projects/*; do
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project=$toProject:t
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if print -- project | grep -v s >/dev/null
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then
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print $project
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for toResource in $toProject/*(.N); do
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if print -- ${toResource:t} | grep $project >/dev/null; then
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print -- "X $toResource"
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fi
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done
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fi
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done
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</code>
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After =>
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<code class="zsh">
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contain_no_s() { print $1 | grep -v s }
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function verify_file_name {
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local project=$1:t
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contains_project_name() { print $1:t | grep $project }
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map "print -- X" $(filter contains_project_name $1/*(.N))
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}
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map show_project_matchin_file $( filter contain_no_s Projects/* )
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</code>
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Also, the first verstion is a bit easier to read.
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But the second one is clearly far superior in architecture.
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Why?
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