Merge 295fe153ad into 1fd64e478a

Hello, I've added a small blockquote below the description to indicate that this method of accessing an indefinite number of function arguments has been superseded by the use of the spread operator via rest parameters for ES6+ compatibility.

README.md

@@ -10,7 +10,7 @@ pairing with smart people at Hashrocket.
 
 For a steady stream of TILs, [sign up for my newsletter](https://crafty-builder-6996.ck.page/e169c61186).
 
-_1580 TILs and counting..._
+_1581 TILs and counting..._
 
 See some of the other learning resources I work on:
 - [Ruby Operator Lookup](https://www.visualmode.dev/ruby-operators)
@@ -899,6 +899,7 @@ See some of the other learning resources I work on:
 - [Timestamp Functions](postgres/timestamp-functions.md)
 - [Toggling The Pager In PSQL](postgres/toggling-the-pager-in-psql.md)
 - [Track psql History Separately Per Database](postgres/track-psql-history-separately-per-database.md)
+- [Trim Leading And Trailing Space From String](postgres/trim-leading-and-trailing-space-from-string.md)
 - [Truncate All Rows](postgres/truncate-all-rows.md)
 - [Truncate Tables With Dependents](postgres/truncate-tables-with-dependents.md)
 - [Turning Timing On](postgres/turn-timing-on.md)

javascript/accessing-arguments-to-a-function.md

@@ -5,6 +5,8 @@ an array-like object with all of the arguments to the function. Even if not
 all of the arguments are referenced in the function signature, they can
 still be accessed via the `arguments` object.
 
+> For ES6+ compatibility, the `spread` operator used via [rest parameters](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Functions/rest_parameters) is preferred over the `arugments` object when accessing an abritrary number of function arguments.
+
 ```javascript
 function argTest(one) {
   console.log(one);

postgres/trim-leading-and-trailing-space-from-string.md

@@ -0,0 +1,58 @@
+# Trim Leading And Trailing Space From String
+
+PostgreSQL has a bunch of [string
+functions](https://www.postgresql.org/docs/current/functions-string.html),
+including several for doing various string trimming.
+
+We can use the simplest form of `trim` to remove leading and trailing space
+characters from a string.
+
+```sql
+> select trim('  Taco Cat ');
++----------+
+| btrim    |
+|----------|
+| Taco Cat |
++----------+
+```
+
+The syntax for calling `trim` is a bit odd relative to other PostgreSQL
+functions and functions in other languages. Here is the "grammar" as described
+in the docs:
+
+```
+trim ( [ LEADING | TRAILING | BOTH ] [ characters text ] FROM string text ) → text
+```
+
+We pick `leading`, `trailing`, or `both`, with `both` being the default. Then
+we specify the character(s) we want to remove. This is also optional, the
+default being the space character. Then we say `from` what string we want to
+trim those characters.
+
+Here we remove all sequential spaces from `both` ends of the given string:
+
+```sql
+> select trim(both from '  Taco Cat ');
++----------+
+| btrim    |
+|----------|
+| Taco Cat |
++----------+
+```
+
+To further demonstrate how `trim` works, here we remove all sequences made up
+of any of spaces, uppercase `T`, and lowercase `t` from `both` ends of the
+string:
+
+```sql
+> select trim(both ' Tt' from '  Taco Cat ');
++--------+
+| btrim  |
+|--------|
+| aco Ca |
++--------+
+```
+
+Notice that in all the above examples the column name of the result is `btrim`.
+That's probably because `btrim` (_trim both ends_) is being called under the
+hood for the `both` option.