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Does “use strict” in the constructor extend to prototype methods?

javascript,strict,use-strict

No. Strict mode does extend to all descendant (read: nested) scopes, but since your fetch function is not created inside the constructor it is not inherited. You would need to repeat the directive in each of the prototype methods. Privileged methods in contrast would be in strict mode when the...

Is there a systematic way to check for `strict refs`?

perl,reference,use-strict

Because Perl is untyped (a variable can potentially hold either a reference or non-reference), this can only be checked at run time. Consider: use strict; # Usage: foo(HASHREF) sub foo { print $_[0]{name}, "\n" if int(rand(2)); } my $var = int(rand(2)) ? { name => "Hello" } : "World"; #...

Why is “use strict” still a string literal? [duplicate]

javascript,ecmascript-5,use-strict

Compatibility across all browsers and JS runtime engines. E.g., http://ejohn.org/blog/ecmascript-5-strict-mode-json-and-more/ No new syntax is introduced in order to enable strict mode. This is huge. This means that you can turn strict mode on in your scripts – today – and it’ll have, at worst, no side effect in old browsers....

“use strict” inheritance / scope

javascript,use-strict

Quoting MDN on strict mode, To invoke strict mode for an entire script, put the exact statement "use strict"; (or 'use strict';) before any other statements. concatenating strict and non-strict scripts is problematic. It is thus recommended that you enable strict mode on a function-by-function basis. So putting it at...

“use strict;” line in perl causing a simple print script to fail to run

perl,internal-server-error,use-strict

Always check the error log in situations like this. Let it tell you what's wrong. There are at least three likely possibilities: The script is not executable, and so will not run. (unix specific) #!/usr/bin/perl does not exist and so can't be executed. Your @INC is messed up some how,...