Content added Content deleted
m (order change for correct questions) |
m (revized quiz) |
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| Line 151: | Line 151: | ||
|type="()"} |
|type="()"} |
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- a = 4 |
- a = 4 |
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|| This defines <code>a</code> globally - not locally. |
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- do a = 4 end |
- do a = 4 end |
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|| This defines <code>a</code> globally (not locally), and within a scope block. |
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+ local a = 4 |
+ local a = 4 |
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- local a = "4" |
- local a = "4" |
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|| This defines <code>a</code> locally, but as "4" (a string), not 4 (a number). |
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{Defining variables in the local scope is always preferred |
{Defining variables in the local scope is always preferred |
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| Line 159: | Line 162: | ||
+ TRUE |
+ TRUE |
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- FALSE |
- FALSE |
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|| Always defining variables in the local scope is less memory intensive and makes you less prone to mistakes |
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{What will the following code print? <syntaxhighlight lang="lua" line="1"> |
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local hello = "Hello world!" |
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print(hello) |
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</syntaxhighlight> |
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|type="()"} |
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- hello |
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+ Hello world! |
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- "Hello world!" |
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- 'hello' |
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{Consider the following code: <syntaxhighlight lang="lua" line="1"> |
{Consider the following code: <syntaxhighlight lang="lua" line="1"> |
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local b = 2 |
local b = 2 |
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local |
local p = 3 |
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do |
do |
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b = 5 |
b = 5 |
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print( |
print(p) |
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end |
end |
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| Line 172: | Line 187: | ||
</syntaxhighlight> |
</syntaxhighlight> |
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The code will print out: |
The code will print out: |
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|type="()"} |
|type="()" coef="2"} |
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- 5, then 2 |
- 5, then 2 |
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|| You seem to have mixed up the variables. |
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- 2, then 3 |
- 2, then 3 |
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|| You seem to have mixed up the variables. |
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- 3, then 5 |
- 3, then 5 |
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|| <code>b</code> is equal to 5 only in the scope block; not outside of it. |
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+ 3, then 2 |
+ 3, then 2 |
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| Line 194: | Line 212: | ||
If the output of the code was '''54''' and '''24'''. |
If the output of the code was '''54''' and '''24'''. |
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|type="{}"} |
|type="{}" coef="4"} |
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First missing line: { print(c) } |
First missing line: { print(c) } |
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Second missing line: { c=24|s=24|local c = 24|local c=24|local s = 24|local s=24 } |
Second missing line: { c=24|s=24|local c = 24|local c=24|local s = 24|local s=24 } |
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