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How does one use rescue in Ruby without the begin and end block
... Also, class definitions, module definitions and (I think) do/end block literals form implicit exception blocks.
– Jörg W Mittag
Oct 22 '11 at 11:25
...
Vim multiline editing like in sublimetext?
... the Windows compatibility layer.
The normal shortcut for entering Visual-Block mode is <C-v>.
Others have dealt with recording macros, here are a few other ideas:
Using only visual-block mode.
Put the cursor on the second word:
asd |a|sd asd asd asd;
asd asd asd asd asd;
asd asd asd asd...
How to concatenate strings in twig
...oncat('http://', app.request.host) }}:
In src/AppBundle/Twig/AppExtension.php
<?php
namespace AppBundle\Twig;
class AppExtension extends \Twig_Extension
{
/**
* {@inheritdoc}
*/
public function getFunctions()
{
return [
new \Twig_SimpleFunction('conca...
Regular expression for a hexadecimal number?
...
If you're using Perl or PHP, you can replace
[0-9a-fA-F]
with:
[[:xdigit:]]
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How to place two divs next to each other?
...fix hack, it's technical term is that when used like this it creates a new block formatting context
– clairesuzy
Apr 27 '11 at 12:35
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What to do with “Unexpected indent” in python?
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Python uses spacing at the start of the line to determine when code blocks start and end. Errors you can get are:
Unexpected indent. This line of code has more spaces at the start than the one before, but the one before is not the start of a subblock (e.g. if/while/for statement). All lines ...
When to use lambda, when to use Proc.new?
....new is surprising. However when you consider that Proc.new behaves like a block this is not surprising as that is exactly how blocks behave. lambas on the other hand behave more like methods.
This actually explains why Procs are flexible when it comes to arity (number of arguments) whereas lambdas...
How to display Base64 images in HTML?
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If you have PHP on the back-end, you can use this code:
$image = 'http://images.itracki.com/2011/06/favicon.png';
// Read image path, convert to base64 encoding
$imageData = base64_encode(file_get_contents($image));
// Format the image...
Reset/remove CSS styles for element only
... For example, if an author specifies all: initial on an element it will
block all inheritance and reset all properties, as if no rules
appeared in the author, user, or user-agent levels of the cascade.
This can be useful for the root element of a "widget" included in a
page, which does n...
When to use margin vs padding in CSS [closed]
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The vertical margins only collapse for block elements. For inline block elements the margins are added both vertically and horizontally. So I am not sure that it is an issue that horizontal margins don't collapse on block elements since they fill their container a...