some further modifications and replace the author

Author: szabgab

perl-hashes.tt

@@ -3,7 +3,7 @@
 =indexes hash, key, value, associative, %, =>, fat arrow, fat comma
 =status show
 =books beginner_book
-=author leprevost
+=author szabgab
 =index 1
 =archive 1
 =feed 1
@@ -13,28 +13,28 @@
 =abstract start
 
 In this article of the <a href="/perl-tutorial">Perl Tutorial</a>
-we are going to learn about one of the powerful tools in Perl programming: <b>hashes</b>.
-Some times called associative arrays, dictionaries or maps, hashes are one of the data structures available in Perl.
+we are going to learn about <b>hashes</b>, one of the powerful parts of Perl.
+
+Some times called associative arrays, dictionaries, or maps; hashes are one of the data structures available in Perl.
 
 =abstract end
 
 A hash is an un-ordered group of key-value pairs. The keys are unique strings. The values are scalar values.
-Each value can be either a number, a string or a reference. (We'll learn about references later, but those allow
-us to build multi-dimensional data structures.
+Each value can be either a number, a string, or a reference. We'll learn about references later.
 
 Hashes, like other Perl variables, are declared using the <hl>my</hl> keyword. The variable name is preceded by the
-percentage (<hl>%</hl>) symbol.
+percentage (<hl>%</hl>) sign.
 
 It's a little mnemonic trick to help you remind about the key-value structure.
 
 Some people think that hashed are like arrays (the old name 'associative array' also indicates this, and in some other
-languages like PHP, there is no difference between the two), but there are two major differences between arrays and
-hashes. Arrays are ordered, and you access an element of an array using its numerical index.
+languages, such as PHP, there is no difference between arrays and hashes.), but there are two major differences between arrays
+and hashes. Arrays are ordered, and you access an element of an array using its numerical index.
 Hashes are un-ordered and you access a value using a key which is a string.
 
 Each hash key is associated with a single <b>value</b> and the keys are all unique inside a single hash structure.
-That means no repetitive keys are allowed. (If you want to have more than one values for a key, you'll will need to wait
-a bit till we reach the references.)
+That means no repetitive keys are allowed. (If you really, really want to have more than one values for a key,
+you'll will need to wait a bit till we reach the references.)
 
 Let's see some code now:
 
@@ -44,9 +44,9 @@ Let's see some code now:
 my %color_of;
 </code>
 
-<h2>Insert element in a hash</h2>
+<h2>Insert a key-value pair into a hash</h2>
 
-Insert a key-value pair: In this case 'apple' is the key and 'red' is the associated value.
+In this case 'apple' is the key and 'red' is the associated value.
 
 <code lang="perl">
 $color_of{'apple'} = 'red';
@@ -66,12 +66,12 @@ Actually, if the key is a simple string, you could leave out the quotes even whe
 $color_of{apple} = 'red';
 </code>
 
-As you can see above, when accessing a specific key-value pair, we used the <hl>$</hl> symbol (and not the % symbol)
-because we are accessing a single value which is a <b>scalar</b>.
+As you can see above, when accessing a specific key-value pair, we used the <hl>$</hl> sign (and not the % sign)
+because we are accessing a single value which is a <b>scalar</b>. The key is placed in curly braces.
 
-<h2>Fetch and element of a hash</h2>
+<h2>Fetch an element of a hash</h2>
 
-Quite similar to the way we inserted an element we can also fetch the value of an element.
+Quite similar to the way we inserted an element, we can also fetch the value of an element.
 
 <code lang="perl">
 print $color_of{apple};
@@ -104,9 +104,9 @@ my %color_of = (
 );
 </code>
 
-This is called the <b>fat arrow</b> or <b>fat comma</b>, and it is used to indicate pairs of elements.
-The first name fat arrow will be clear once we see the the other arrow (->) used in Perl.
-The name fat comma is used, because these arrows are basically the same as commas. So we could have written this too:
+<hl>=></hl> is called the <b>fat arrow</b> or <b>fat comma</b>, and it is used to indicate pairs of elements.
+The first name, fat arrow, will be clear once we see the the other, thinner arrow (->) used in Perl.
+The name fat comma comes from the fact that these arrows are basically the same as commas. So we could have written this too:
 
 <code lang="perl">
 my %color_of = (
@@ -116,7 +116,8 @@ my %color_of = (
 );
 </code>
 
-Actually the fat comma allows you to leave out the quotes on the left-hand side writing like this:
+Actually, the fat comma allows you to leave out the quotes on the left-hand side makig the code cleaner
+and more readable.
 
 <code lang="perl">
 my %color_of = (
@@ -126,7 +127,6 @@ my %color_of = (
 );
 </code>
 
-
 <h2>Assignment to a hash element</h2>
 
 Let's see what happens when we assign another value to an existing key:
@@ -136,7 +136,7 @@ $color_of{apple} = "green";
 print $color_of{apple};     # green
 </code>
 
-The assignment changed the value associated with the <hl>apple</hl> key. Remember, keys are unique and each key has a
+The assignment changed the value associated with the <b>apple</b> key. Remember, keys are unique and each key has a
 single value.
 
 <h2>Iterating over hashes</h2>
@@ -171,4 +171,10 @@ You can get it by placing the <hl>keys</hl> function in scalar context.
 print scalar keys %hash;
 </code>
 
+<h2>Thanks</h2>
+
+The first edition of this article was written by <a href="http://www.leprevost.com.br/">Felipe da Veiga Leprevost</a> who also makes the
+<a href="http://br.perl5maven.com/">Portuguese translation</a> of the Perl Maven articles.
+
+