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This commit is contained in:
Ilya Kantor 2016-03-06 00:59:16 +03:00
parent 811a6c7920
commit 98c987e794
84 changed files with 826 additions and 880 deletions

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@ -1,13 +1,17 @@
Потому что `i` никогда не станет равным `10`.
That's because `i` would never equal `10`.
Запустите, чтобы увидеть *реальные* значения `i`:
Run it to see the *real* values of `i`:
```js run
var i = 0;
let i = 0;
while (i < 11) {
i += 0.2;
if (i > 9.8 && i < 10.2) alert( i );
}
```
Ни одно из них в точности не равно `10`.
None of them is exactly `10`.
Such things happen because of the precision losses when adding fractions like `0.2`.
Conclusion: evade equality checks when working with decimal fractions.

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@ -2,12 +2,12 @@ importance: 4
---
# Бесконечный цикл по ошибке
# An occasional infinite loop
Этот цикл - бесконечный. Почему?
This loop is infinite. It never ends. Why?
```js
var i = 0;
let i = 0;
while (i != 10) {
i += 0.2;
}