Merge pull request #472 from benhjames/gender-neutral-pronouns

Use gender neutral pronouns

Author: iliakan

1-js/02-first-steps/04-variables/article.md

@@ -247,7 +247,7 @@ const myBirthday = '18.04.1982';
 myBirthday = '01.01.2001'; // error, can't reassign the constant!
 ```
 
-When a programmer is sure that the variable should never change, he can use `const` to guarantee it, and also to clearly show that fact to everyone.
+When a programmer is sure that the variable should never change, they can use `const` to guarantee it, and also to clearly show that fact to everyone.
 
 
 ### Uppercase constants

1-js/02-first-steps/12-while-for/6-repeat-until-correct/task.md

@@ -4,7 +4,7 @@ importance: 5
 
 # Repeat until the input is correct
 
-Write a loop which prompts for a number greater than `100`. If the visitor enters another number -- ask him to input again.
+Write a loop which prompts for a number greater than `100`. If the visitor enters another number -- ask them to input again.
 
 The loop must ask for a number until either the visitor enters a number greater than `100` or cancels the input/enters an empty line.
 

1-js/02-first-steps/16-javascript-specials/article.md

@@ -103,15 +103,15 @@ More in: <info:variables> and <info:types>.
 We're using a browser as a working environment, so basic UI functions will be:
 
 [`prompt(question[, default])`](mdn:api/Window/prompt)
-: Ask a `question`, and return either what the visitor entered or `null` if he pressed "cancel".
+: Ask a `question`, and return either what the visitor entered or `null` if they pressed "cancel".
 
 [`confirm(question)`](mdn:api/Window/confirm)
 : Ask a `question` and suggest to choose between Ok and Cancel. The choice is returned as `true/false`.
 
 [`alert(message)`](mdn:api/Window/alert)
 : Output a `message`.
 
-All these functions are *modal*, they pause the code execution and prevent the visitor from interacting with the page until he answers.
+All these functions are *modal*, they pause the code execution and prevent the visitor from interacting with the page until they answer.
 
 For instance:
 

1-js/03-code-quality/04-ninja-code/article.md

@@ -34,7 +34,7 @@ i = i ? i < 0 ? Math.max(0, len + i) : i : 0;
 
 Cool, right? If you write like that, the developer who comes across this line and tries to understand what is the value of `i` is going to have a merry time. Then come to you, seeking for an answer.
 
-Tell him that shorter is always better. Initiate him into the paths of ninja.
+Tell them that shorter is always better. Initiate them into the paths of ninja.
 
 ## One-letter variables
 
@@ -45,11 +45,11 @@ completed.
 
 Another way to code faster is to use single-letter variable names everywhere. Like `a`, `b` or `c`.
 
-A short variable disappears in the code like a real ninja in the forest. No one will be able to find it using "search" of the editor. And even if someone does, he won't be able to "decipher" what the name `a` or `b` means.
+A short variable disappears in the code like a real ninja in the forest. No one will be able to find it using "search" of the editor. And even if someone does, they won't be able to "decipher" what the name `a` or `b` means.
 
 ...But there's an exception. A real ninja will never use `i` as the counter in a `"for"` loop. Anywhere, but not here. Look around, there are many more exotic letters. For instance, `x` or `y`.
 
-An exotic variable as a loop counter is especially cool if the loop body takes 1-2 pages (make it longer if you can). Then if someone looks deep inside the loop, he won't be able to quickly figure out that the variable named `x` is the loop counter.
+An exotic variable as a loop counter is especially cool if the loop body takes 1-2 pages (make it longer if you can). Then if someone looks deep inside the loop, they won't be able to quickly figure out that the variable named `x` is the loop counter.
 
 ## Use abbreviations
 
@@ -153,7 +153,7 @@ function ninjaFunction(elem) {
 }
 ```
 
-A fellow programmer who wants to work with `elem` in the second half of the function will be surprised... Only during the debugging, after examining the code he will find out that he's working with a clone!
+A fellow programmer who wants to work with `elem` in the second half of the function will be surprised... Only during the debugging, after examining the code they will find out that he's working with a clone!
 
 Deadly effective even against an experienced ninja. Seen in code regularly.
 
@@ -204,7 +204,7 @@ There are functions that look like they don't change anything. Like `isReady()`,
 
 **A really beautiful trick is to add a "useful" action to them, besides the main task.**
 
-The expression of dazed surprise on the face of your colleague when he sees a function named `is..`, `check..` or `find...` changing something -- will definitely broaden your boundaries of reason.
+The expression of dazed surprise on the face of your colleague when they see a function named `is..`, `check..` or `find...` changing something -- will definitely broaden your boundaries of reason.
 
 **Another way to surprise is to return a non-standard result.**
 
@@ -228,7 +228,7 @@ Additional actions should not be obvious from the function name. A true ninja co
 
 **Joining several actions into one protects your code from reuse.**
 
-Imagine, another developer wants only to check the email, and not output any message. Your function  `validateEmail(email)` that does both will not suit him. So he won't break your meditation by asking anything about it.
+Imagine, another developer wants only to check the email, and not output any message. Your function  `validateEmail(email)` that does both will not suit them. So they won't break your meditation by asking anything about it.
 
 ## Summary
 

1-js/03-code-quality/06-polyfills/article.md

@@ -19,7 +19,7 @@ Here Babel comes to the rescue.
 
 Actually, there are two parts in Babel:
 
-1. First, the transpiler program, which rewrites the code. The developer runs it on his own computer. It rewrites the code into the older standard. And then the code is delivered to the website for users. Modern project build system like [webpack](http://webpack.github.io/) or [brunch](http://brunch.io/) provide means to run transpiler automatically on every code change, so that doesn't involve any time loss from our side.
+1. First, the transpiler program, which rewrites the code. The developer runs it on their own computer. It rewrites the code into the older standard. And then the code is delivered to the website for users. Modern project build system like [webpack](http://webpack.github.io/) or [brunch](http://brunch.io/) provide means to run transpiler automatically on every code change, so that doesn't involve any time loss from our side.
 
 2. Second, the polyfill.
 

1-js/05-data-types/02-number/article.md

@@ -201,7 +201,7 @@ Strange! What is it then if not `0.3`?
 alert( 0.1 + 0.2 ); // 0.30000000000000004
 ```
 
-Ouch! There are more consequences than an incorrect comparison here. Imagine you're making an e-shopping site and the visitor puts `$0.10` and `$0.20` goods into his chart. The order total will be `$0.30000000000000004`. That would surprise anyone.
+Ouch! There are more consequences than an incorrect comparison here. Imagine you're making an e-shopping site and the visitor puts `$0.10` and `$0.20` goods into their chart. The order total will be `$0.30000000000000004`. That would surprise anyone.
 
 But why does this happen?
 

1-js/05-data-types/03-string/article.md

@@ -451,7 +451,7 @@ Let's recap these methods to avoid any confusion:
 ```smart header="Which one to choose?"
 All of them can do the job. Formally, `substr` has a minor drawback: it is described not in the core JavaScript specification, but in Annex B, which covers browser-only features that exist mainly for historical reasons. So, non-browser environments may fail to support it. But in practice it works everywhere.
 
-The author finds himself using `slice` almost all the time.
+The author finds themself using `slice` almost all the time.
 ```
 
 ## Comparing strings

1-js/05-data-types/04-array/article.md

@@ -369,7 +369,7 @@ It's rarely used, because square brackets `[]` are shorter. Also there's a trick
 
 If `new Array` is called with a single argument which is a number, then it creates an array *without items, but with the given length*.
 
-Let's see how one can shoot himself in the foot:
+Let's see how one can shoot themself in the foot:
 
 ```js run
 let arr = new Array(2); // will it create an array of [2] ?

1-js/05-data-types/07-map-set-weakmap-weakset/article.md

@@ -47,7 +47,7 @@ For instance:
 ```js run
 let john = { name: "John" };
 
-// for every user, let's store his visits count
+// for every user, let's store their visits count
 let visitsCountMap = new Map();
 
 // john is the key for the map
@@ -332,7 +332,7 @@ That's useful for situations when we have a main storage for the objects somewhe
 
 Let's look at an example.
 
-For instance, we have code that keeps a visit count for each user. The information is stored in a map: a user is the key and the visit count is the value. When a user leaves, we don't want to store his visit count anymore.
+For instance, we have code that keeps a visit count for each user. The information is stored in a map: a user is the key and the visit count is the value. When a user leaves, we don't want to store their visit count anymore.
 
 One way would be to keep track of leaving users and clean up the storage manually:
 

1-js/06-advanced-functions/09-call-apply-decorators/04-throttle/task.md

@@ -22,7 +22,7 @@ So we'll assign `throttle(update, 100)` as the function to run on each mouse mov
 
 Visually, it will look like this:
 
-1. For the first mouse movement the decorated variant passes the call to `update`. That's important, the user sees our reaction to his move immediately.
+1. For the first mouse movement the decorated variant passes the call to `update`. That's important, the user sees our reaction to their move immediately.
 2. Then as the mouse moves on, until `100ms` nothing happens. The decorated variant ignores calls.
 3. At the end of `100ms` -- one more `update` happens with the last coordinates. 
 4. Then, finally, the mouse stops somewhere. The decorated variant waits until `100ms` expire and then runs `update` runs with last coordinates. So, perhaps the most important, the final mouse coordinates are processed.