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Ruby on Rails: how to render a string as HTML?
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What's happening is that, as a security measure, Rails is escaping your string for you because it might have malicious code embedded in it. But if you tell Rails that your string is html_safe, it'll pass it right through.
@str = "<b>Hi</b>".html_safe
<%= @str %>
OR
@str = "&...
Explode PHP string by new line
...the EOL the browser (any OS) is using, but that (the browser) is where the string is coming from.
So please use the solution from @Alin_Purcaru (three down) to cover all your bases (and upvote his answer):
$skuList = preg_split('/\r\n|\r|\n/', $_POST['skuList']);
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Convert file path to a file URI?
...ing the backslashes with forward slashes and feed the path to Uri.EscapeUriString - i.e.
new Uri(Uri.EscapeUriString(filePath.Replace(Path.DirectorySeparatorChar, '/'))).AbsoluteUri
This seems to work at first, but if you give it the path C:\a b.txt then you end up with file:///C:/a%2520b.txt ins...
How to concatenate columns in a Postgres SELECT?
I have two string columns a and b in a table foo .
8 Answers
8
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Adding a column to an existing table in a Rails migration
...enerate a new migration (rails generate migration add_email_to_users email:string will do the trick).
It will create a migration file containing line:
add_column :users, email, string
Then do a rake db:migrate and it'll run the new migration, creating the new column.
If you have not yet run the ori...
When to use ' (or quote) in Lisp?
... as their values, and markers where you in other languages would have used strings, such as keys to hash tables.
This is where quote comes in. Say you want to plot resource allocations from a Python application, but rather do the plotting in Lisp. Have your Python app do something like this:
pri...
A Java collection of value pairs? (tuples?)
... where you can define the types of each entry in the map, for example <String, Integer> .
19 Answers
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Spring Data: “delete by” is supported?
...elete from User u where u.firstName = ?1")
void deleteUsersByFirstName(String firstName);
}
Update:
In modern versions of Spring Data JPA (>=1.7.x) query derivation for delete, remove and count operations is accessible.
public interface UserRepository extends CrudRepository<User, Long&...
How to detect if a property exists on an ExpandoObject?
...aled class ExpandoObject : IDynamicMetaObjectProvider,
IDictionary<string, Object>, ICollection<KeyValuePair<string, Object>>,
IEnumerable<KeyValuePair<string, Object>>, IEnumerable, INotifyPropertyChanged
You can use this to see if a member is defined:
var...
How to concatenate two numbers in javascript?
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Use "" + 5 + 6 to force it to strings. This works with numerical variables too:
var a = 5;
var b = 6;
console.log("" + a + b);
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