Last Updated: July 8, 2019

Swap Assignment Macro

Macro Monday – a new macro to dig into every Monday!

It’s a common idiom to swap things around in your code, either swapping the position of two function arguments, or changing the assignment o variable around in a save and restore operation. This is not often done, bu when you need to do it, this macro will save you a lot of time… I end up using this macro around once per day.


Given this piece of JavaScript assignment code:

window.myvariable = window.somefield;

when you select this piece of code and invoke the macro, you’d get the code
assignment swapped into this:

window.somefield = window.myvariable;

Another use case is to swap the position of function arguments:

def myfunction(arg1, arg2):
print(arg1, arg2)
myfunction("one", "two")

If you select arg1, arg2, or select “one”, “two” and run the macro you’d
swap those arguments around:

def myfunction(arg2, arg1):
print(arg2, arg1)
myfunction("two", "one")


To install the macro simply hit the download button below, then drag the downloaded file into your Komodo toolbox.

To use the macro, make an editor selection and then invoke the macro – by double-clicking on the macro in the toolbox, using the Invoke Tool (Ctrl+Shift+K) to search/execute “swap assignment”, or assigning your own keybinding to the macro.

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Related Materials

  • Komodo Developer Extension
    • play around with JavaScript or Python code in the context of the Komodo window
  • Komodo Macro API
    • to programatically interact with the Komodo editor – available to both
      Python and Javascript
  • Editor API
    • the Komodo editor provides a wrapper around the Scintilla API
Todd Whiteman

Todd Whiteman

Todd Whiteman is the Development Lead for Komodo IDE. He works adeptly with Mozilla, Python and JavaScript to ensure that Komodo IDE is the IDE of choice for development teams. Todd has been working on Komodo IDE for nearly 6 years, adding components such as the Vi Key Bindings, Distributed Source Code Control, 64-bit Linux builds as well as Remote SSH support into Komodo IDE.