From: pdahorek@... Date: 2019-02-22T15:51:36+00:00 Subject: [ruby-core:91610] [Ruby trunk Bug#15616] Chained destructive methods fail when using +@to unfreeze a frozen string Issue #15616 has been updated by ahorek (Pavel Rosick�). ``` +foo.gsub!("bar", "car") ``` stands for ``` +(foo.gsub!("bar", "car")) ``` and because foo is frozen, you'll get an error, see #15606 try this ``` foo = "bar".freeze foo = (+foo).gsub!("bar", "car") ``` or ``` foo = "bar".freeze foo = foo.gsub("bar", "car") ``` ---------------------------------------- Bug #15616: Chained destructive methods fail when using +@ to unfreeze a frozen string https://bugs.ruby-lang.org/issues/15616#change-76877 * Author: cianooooo (Cian O) * Status: Open * Priority: Normal * Assignee: * Target version: * ruby -v: 2.6.1 * Backport: 2.4: UNKNOWN, 2.5: UNKNOWN, 2.6: UNKNOWN ---------------------------------------- Using the +@ syntax to unfreeze a string does not work when chaining destructive methods Consider the following; ``` ruby foo = "bar".freeze +foo.gsub!("bar", "car") ``` This raises; ``` ruby FrozenError: can't modify frozen String ``` However, I would have expected this to work since +@ should return a duplicated mutable string. -- https://bugs.ruby-lang.org/ Unsubscribe: