Case-insensitive regex
You can specify “i” in the Regex operator, but what about the Filter operator and String Regex module?
Simple. Just prefix your regex with (?i) — this makes the match case-insensitive for the remainder of the string.
plumber!s toolbox
tips, tricks, techniques, and tools for yahoo! pipes
by alex ibrado
by alex ibrado
Apr 15
Parameter reuse
It may not be immediately obvious, but you can wire the output of various Inputs and Builders as many times as you need.
Apr 14
Counter (for loop)
A loop that counts from A to B is quite useful for the times when you need to repeat a certain operation X times.
This module is similar to Mauricio Scheffer’s, but uses an internal string for the number source instead of pulling in a CSV file from a remote host. By default, it’s limited to a max of 1000 loops as well, but you can just add more numbers.
To use this, clone it and drag into your editor from “My pipes” into a Loop where you embed your desired action. The counter is accessible as “item.i”. Note that the silly “+ 0” loop is a workaround for a bug in the String Tokenizer, where it tokenizes 0 to an empty string.
Here’s a bash one-liner to make more numbers. Just copy and paste the values into the String Builder.
limit=2000; (for ((i=0;i < $limit; ++i)); do echo -n $i; if [ $i -ne (( $limit-1 )) ]; echo -n , ’ ) > $limit-numbers.csv
Feed switch
You can use this technique for any problem that requires runtime modification of the pipe output, for instance, when you use a feed with embeddable gadgets.
In this example, you can exclude descriptions (excerpts) by specifying an xd parameter value of 1.
