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minor fixes

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This commit is contained in:
Ilya Kantor 2020-09-23 12:42:10 +03:00
parent c48c52cb81
commit e61bfa2631
1 changed files with 3 additions and 3 deletions
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1-js/06-advanced-functions/03-closure/10-make-army/solution.md
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@ -88,7 +88,7 @@ Let's examine what exactly happens inside `makeArmy`, and the solution will beco
Here `let j = i` declares an "iteration-local" variable `j` and copies `i` into it. Primitives are copied "by value", so we actually get an independent copy of `i`, belonging to the current loop iteration. Here `let j = i` declares an "iteration-local" variable `j` and copies `i` into it. Primitives are copied "by value", so we actually get an independent copy of `i`, belonging to the current loop iteration.
The shooters work correctly, because, the value of `i` now lives a little bit closer. Not in `makeArmy()` Lexical Environment, but in the Lexical Environment that corresponds the current loop iteration: The shooters work correctly, because the value of `i` now lives a little bit closer. Not in `makeArmy()` Lexical Environment, but in the Lexical Environment that corresponds the current loop iteration:
![](lexenv-makearmy-while-fixed.svg) ![](lexenv-makearmy-while-fixed.svg)
@ -117,11 +117,11 @@ Let's examine what exactly happens inside `makeArmy`, and the solution will beco
army[5](); // 5 army[5](); // 5
``` ```
That's essentially the same, because, `for` on each iteration generates a new lexical environment, with its own variable `i`. So `shooter` generated in every iteration references its own `i`, from that very iteration. That's essentially the same, because `for` on each iteration generates a new lexical environment, with its own variable `i`. So `shooter` generated in every iteration references its own `i`, from that very iteration.
![](lexenv-makearmy-for-fixed.svg) ![](lexenv-makearmy-for-fixed.svg)
Now, as you've put so much effort into reading this, and the final recipe is so simple - just use `for`, you may wonder -\- was it worth that? Now, as you've put so much effort into reading this, and the final recipe is so simple - just use `for`, you may wonder -- was it worth that?
Well, if you could easily answer the question, you wouldn't read the solution. So, hopefully this task must have helped you to understand things a bit better. Well, if you could easily answer the question, you wouldn't read the solution. So, hopefully this task must have helped you to understand things a bit better.