From while to for: Difference between revisions
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<slidy theme="aa" /> | <slidy theme="aa" /> | ||
== from while... == | |||
<source lang="javascript"> | |||
c=0; | |||
while (c<10) { | |||
ctx.fillRect(0, c*10, 10, 10); | |||
c++; | |||
} | |||
</source> | |||
<source lang="javascript"> | |||
c=0; | |||
while (c<10) { | |||
ctx.fillRect(0, c*10, 10, 10); | |||
c+=1; | |||
} | |||
</source> | |||
<source lang="javascript"> | <source lang="javascript"> | ||
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while (c<10) { | while (c<10) { | ||
ctx.fillRect(0, c*10, 10, 10); | ctx.fillRect(0, c*10, 10, 10); | ||
c+ | c=c+1; | ||
} | } | ||
</source> | </source> | ||
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A [[wikipedia:Stack (abstract_data_type)|stack]] is an often used idea/data structure. It's based on a system used in cafeterias where food trays could be "pushed on", and "popped off" a spring loaded system for use. | A [[wikipedia:Stack (abstract_data_type)|stack]] is an often used idea/data structure. It's based on a system used in cafeterias where food trays could be "pushed on", and "popped off" a spring loaded system for use. | ||
[[File:426893 2967152131801 1051608913 2875355 1878017031 n.jpg]] | |||
http://s.ecrater.com/stores/242163/4f24ed6ed9ebd_242163n.jpg | http://s.ecrater.com/stores/242163/4f24ed6ed9ebd_242163n.jpg | ||
[[Category:Slidy Presentations]] | |||
Latest revision as of 14:26, 1 October 2012
<slidy theme="aa" />
from while...
c=0;
while (c<10) {
ctx.fillRect(0, c*10, 10, 10);
c++;
}
c=0;
while (c<10) {
ctx.fillRect(0, c*10, 10, 10);
c+=1;
}
c=0;
while (c<10) {
ctx.fillRect(0, c*10, 10, 10);
c=c+1;
}
... to for
for (c=0; c<10; c++) {
ctx.fillRect(0, c*10, 10, 10);
}
from while to for
c=0;
while (c<10) {
ctx.fillRect(0, c*10, 10, 10);
c++;
}
for (c=0; c<10; c++) {
ctx.fillRect(0, c*10, 10, 10);
}
translate, rotate
https://developer.mozilla.org/en-US/docs/Canvas_tutorial/Transformations
stack
A stack is an often used idea/data structure. It's based on a system used in cafeterias where food trays could be "pushed on", and "popped off" a spring loaded system for use.
