This should work fine: {{ ‘http://’ ~ app.request.host }} To add a filter – like ‘trans’ – in the same tag use {{ (‘http://’ ~ app.request.host) | trans }} As Adam Elsodaney points out, you can also use string interpolation, this does require double quoted strings: {{ “http://#{app.request.host}” }}
Parameters in calls to functions in PowerShell (all versions) are space-separated, not comma separated. Also, the parentheses are entirely unneccessary and will cause a parse error in PowerShell 2.0 (or later) if Set-StrictMode -Version 2 or higher is active. Parenthesised arguments are used in .NET methods only. function foo($a, $b, $c) { “a: $a; b: … Read more
To escape %, you will need to double it up: %%.
It’s shorthand for tags.map(&:name.to_proc).join(‘ ‘) If foo is an object with a to_proc method, then you can pass it to a method as &foo, which will call foo.to_proc and use that as the method’s block. The Symbol#to_proc method was originally added by ActiveSupport but has been integrated into Ruby 1.8.7. This is its implementation: class … Read more
There is a list of characters that separate tokens in BASH. These characters are called metacharacters and they are |, &, ;, (, ), <, >, space and tab. On the other hand, curly braces ({ and }) are just ordinary characters that make up words. Omitting the second space before } will do, since … Read more
Basically copying and pasting from Bjarne Stroustrup’s “The C++ Programming Language 4th Edition”: List initialization does not allow narrowing (§iso.8.5.4). That is: An integer cannot be converted to another integer that cannot hold its value. For example, char to int is allowed, but not int to char. A floating-point value cannot be converted to another … Read more
In Python 3.x, 5 / 2 will return 2.5 and 5 // 2 will return 2. The former is floating point division, and the latter is floor division, sometimes also called integer division. In Python 2.2 or later in the 2.x line, there is no difference for integers unless you perform a from __future__ import … Read more
update As BrianCampbell points out here, SQLite 3.7.11 and above now supports the simpler syntax of the original post. However, the approach shown is still appropriate if you want maximum compatibility across legacy databases. original answer If I had privileges, I would bump river’s reply: You can insert multiple rows in SQLite, you just need … Read more
After a brief review of the YAML cookbook cited in the question and some testing, here’s my interpretation: In general, you don’t need quotes. Use quotes to force a string, e.g. if your key or value is 10 but you want it to return a String and not a Fixnum, write ’10’ or “10”. Use … Read more
Take me to [pookie](#pookie) should be the correct markdown syntax to jump to the anchor point named pookie. To insert an anchor point of that name use HTML: <a name=”pookie”></a> Markdown doesn’t seem to mind where you put the anchor point. A useful place to put it is in a header. For example: ### <a … Read more