There’s a meme going around where people show their “utilities”.\u00c2\u00a0 Little snippets of code that follows them from place to place and from program to program.\u00c2\u00a0 So here’s one of mine that I’ve been using in one form or another for a long, long time.\u00c2\u00a0 All it does is take a file and optional comment string – open the file, read the lines into an array, and optionally remove lines with the comment string then return the array.\u00c2\u00a0 It’s super easy to do without a helper function, but I do it so often that the one line it takes (two if you count the include or require) is worth it.<\/p>\n
This is *actual* code here, I haven’t cleaned it up at all.<\/p>\n
#readlines(‘filename’); will return an array of the contents of a file. No newlines present, but some minimal
\nerror checking.
\nsub readlines
\n{
\nmy $filename=shift;
\nmy $skip =shift;
\nif(! -e $filename) {die(“File $filename doesn’t exist”);}
\nopen(F,$filename)
\nor die(“Couldn’t open file $filename for reading: $!”);
\nmy @lines=<F>;
\nclose(F) or die (“Couldn’t close file $filename: $!”);
\nchomp(@lines);
\nif($skip)
\n{
\nmy @retary=();
\nforeach my $line(@lines)
\n{
\n$line=~s\/^(.*?)$skip.*\/$1\/;
\nif(!$line){next;}
\npush(@retary,$line);
\n}
\n@lines=@retary;
\n}
\nreturn @lines;
\n}<\/p>\n","protected":false},"excerpt":{"rendered":"
There’s a meme going around where people show their “utilities”.\u00c2\u00a0 Little snippets of code that follows them from place to place and from program to program.\u00c2\u00a0 So here’s one of mine that I’ve been using in one form or another for a long, long time.\u00c2\u00a0 All it does is take a file and optional comment […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[10],"_links":{"self":[{"href":"http:\/\/www.imaginarybillboards.com\/index.php?rest_route=\/wp\/v2\/posts\/22"}],"collection":[{"href":"http:\/\/www.imaginarybillboards.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.imaginarybillboards.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.imaginarybillboards.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.imaginarybillboards.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=22"}],"version-history":[{"count":1,"href":"http:\/\/www.imaginarybillboards.com\/index.php?rest_route=\/wp\/v2\/posts\/22\/revisions"}],"predecessor-version":[{"id":49,"href":"http:\/\/www.imaginarybillboards.com\/index.php?rest_route=\/wp\/v2\/posts\/22\/revisions\/49"}],"wp:attachment":[{"href":"http:\/\/www.imaginarybillboards.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=22"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.imaginarybillboards.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=22"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.imaginarybillboards.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=22"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}