4 ms·A lot of this depends on what level of proficiency you're talking about.by Retra 12y agoA lot of this depends on what level of proficiency you're talking about.gaius 12y agoAnyone familiar with any ALGOL-derived language could be productive, at a commercial level, in any other in a matter of days. Probably less these days with easily searchable API docs.walshemj 12y agoAgreed back in the 80's I picked up PL/1G in a few days