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Re^3: Modification of a read-only value attempted

by roboticus (Chancellor)
on Nov 27, 2012 at 13:48 UTC ( #1005859=note: print w/replies, xml ) Need Help??


in reply to Re^2: Modification of a read-only value attempted
in thread Modification of a read-only value attempted

panku:

You can change $c=1000. What you can't do is change 99 to 1000. When you use $c=1000, it tells perl that $c is no longer pointing to a reference to the constant 99, but is now containing the value 1000. When you use $$c=1000, you're telling perl to change the thing $c points to to 1000. But $c points to the constant value 99. Perl is telling you that it refuses to break the time-space continuum by making 99 be 1000.

...roboticus

When your only tool is a hammer, all problems look like your thumb.

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[choroba]: Isn't Using PerlPod Creatively rather a meditation?
[choroba]: I don't see a question
[1nickt]: ugh, I stuck my head in the bass bin for 30 seconds on a dare at Ted Nugent at Hammersmith Odeon. Yes, I am 40% deaf now.
[johngg]: My daughter is incredibly jealous of my wife who got to see The Clash at Brixton many years ago. They went to see The Vaccines there recently.
[1nickt]: But the bands are even louder! I saw Spearhead (Michael Franti) at an outdoor show and had to walk a mile away to not feel pain in my chest! Babies were crying ... I asked the sound engineer why it was necessary to have the bass so loud and he laughed...
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Discipulus feels the same jealousity of the johngg's daughter
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