Tutorial by Examples: e

Using a single set of .col-md-* grid classes, you can create a basic grid system that starts out stacked on mobile devices and tablet devices (the extra small to small range) before becoming horizontal on desktop (medium) devices. Place grid columns in any .row. <div class="row"> ...

Turn any fixed-width grid layout into a full-width layout by changing your outermost .container to .container-fluid. <div class="container-fluid"> <div class="row"> ... </div> </div>

Don't want your columns to simply stack in smaller devices? Use the extra small and medium device grid classes by adding .col-xs-* .col-md-* to your columns. See the example below for a better idea of how it all works. <!-- Stack the columns on mobile by making one full-width and the other half-...

Build on the previous example by creating even more dynamic and powerful layouts with tablet .col-sm-* classes. <div class="row"> <div class="col-xs-12 col-sm-6 col-md-8">.col-xs-12 .col-sm-6 .col-md-8</div> <div class="col-xs-6 col-md-4">...

With the four tiers of grids available you're bound to run into issues where, at certain breakpoints, your columns don't clear quite right as one is taller than the other. To fix that, use a combination of a .clearfix and our responsive utility classes. <div class="row"> <div ...

Move columns to the right using .col-md-offset-* classes. These classes increase the left margin of a column by * columns. For example, .col-md-offset-4 moves .col-md-4 over four columns. <div class="row"> <div class="col-md-4">.col-md-4</div> <div cla...

To nest your content with the default grid, add a new .row and set of .col-sm-* columns within an existing .col-sm-* column. Nested rows should include a set of columns that add up to 12 or fewer (it is not required that you use all 12 available columns). <div class="row"> <di...

Easily change the order of our built-in grid columns with .col-md-push-* and .col-md-pull-* modifier classes. <div class="row"> <div class="col-md-9 col-md-push-3">.col-md-9 .col-md-push-3</div> <div class="col-md-3 col-md-pull-9">.col-md-...

In addition to prebuilt grid classes for fast layouts, Bootstrap includes Less variables and mixins for quickly generating your own simple, semantic layouts. Variables Variables determine the number of columns, the gutter width, and the media query point at which to begin floating columns. We use ...

Regex to match postcodes in UK The format is as follows, where A signifies a letter and 9 a digit: FormatCoverageExampleCellCellAA9A 9AAWC postcode area; EC1–EC4, NW1W, SE1P, SW1EC1A 1BBA9A 9AAE1W, N1C, N1PW1A 0AXA9 9AA, A99 9AAB, E, G, L, M, N, S, WM1 1AE, B33 8THAA9 9AA, AA99 9AAAll other postco...

Possessive quantifiers are another class of quantifiers in many regex flavours that allow backtracking to, effectively, be disabled for a given token. This can help improve performance, as well as preventing matches in certain cases. The class of possessive quantifiers can be distinguished from laz...

You should make sure that module DBI has been installed on your pc, then follow the bellow steps: use DBI module in your perl script use DBI; Declare some primary parameters my $driver = "MyDriver"; my $database = "DB_name"; my $dsn = "DBI:$driver:dbname=$datab...

The following is a simple example Perl test script, that gives some structure to allow for testing of other methods in the class/package under test. The script produces standard output with simple "ok" / "not ok" text, which is called TAP (Test Anything Protocol). Typically the...

If you'd like to start implementing best practices, for yourself or your team, then Perl::Critic is the best place to start. The module is based on the Perl Best Practices book by Damien Conway and does a fairly good job implementing the suggestions made therein. Note: I should mention (and Conwa...

Install DateTime on your PC and then use it in perl script: use DateTime; Create new current datetime $dt = DateTime->now( time_zone => 'Asia/Ho_Chi_Minh'); Then you can access elements's values of date and time: $year = $dt->year; $month = $dt->month; $day = $dt->day; $...

Set single element: $dt->set( year => 2016 ); Set many elements: $dt->set( year => 2016, 'month' => 8); Add duration to datetime $dt->add( hour => 1, month => 2) Datetime subtraction: my $dt1 = DateTime->new( year => 2016, month => 8, ...

#!/usr/bin/env perl use Dancer2; get '/' => sub { "Hello World!" }; dance;

#!/usr/bin/perl use Term::ANSIColor; print color("cyan"), "Hello", color("red"), "\tWorld", color("green"), "\tIt's Me!\n", color("reset");

Time::Piece is available in perl 5 after version 10 use Time::Piece; my $date = localtime->strftime('%m/%d/%Y'); print $date; Output 07/26/2016

perl -Mojo -E 'p("http://localhost:3000" => form => {Input_Type => "XML", Input_File => {file => "d:/xml/test.xml"}})' File d:/xml/test.xml will be uploaded to server which listen connections on localhost:3000 (Source) In this example: -Mmodule execu...