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PatternSyntaxException: Illegal Repetition when using regex in Java
...uld be plus operator:
user_id : [0-9]+
Double apostrophes only when the string has to contain it.
When the string including curly brackets use:
\{user_id : [0-9]+\}
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Check whether a variable is a string in Ruby
...nd_of? will return true for instances from derived classes.
class X < String
end
foo = X.new
foo.is_a? String # true
foo.kind_of? String # true
foo.instance_of? String # false
foo.instance_of? X # true
...
Using PropertyInfo to find out the property type
...e().GetProperties())
{
if (propertyInfo.PropertyType == typeof(string))
{
string value = propertyInfo.GetValue(data, null);
if value is not OK
{
return false;
}
}
}
return true;
}
...
Is there a print_r or var_dump equivalent in Ruby / Ruby on Rails?
...tributes_cache: {}
=> nil
>>
If you want to just preview some string contents, try using raise (for example in models, controllers or some other inaccessible place). You get the backtrace for free:)
>> raise Rails.root
RuntimeError: /home/marcin/work/github/project1
from (irb...
jquery's append not working with svg element?
...
When you pass a markup string into $, it's parsed as HTML using the browser's innerHTML property on a <div> (or other suitable container for special cases like <tr>). innerHTML can't parse SVG or other non-HTML content, and even if it c...
SVG get text element width
...lue"; // for convenience when visible
div.innerHTML = "YOUR STRING";
document.body.appendChild(div);
var offsetWidth = div.offsetWidth;
var clientWidth = div.clientWidth;
document.body.removeChild(div);
...
How can I generate random alphanumeric strings?
How can I generate a random 8 character alphanumeric string in C#?
33 Answers
33
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Server.MapPath(“.”), Server.MapPath(“~”), Server.MapPath(@“\”), ...
...ry of the request being processed.
Note: in C#, @ is the verbatim literal string operator meaning that the string should be used "as is" and not be processed for escape sequences.
Footnotes
Server.MapPath(null) and Server.MapPath("") will produce this effect too.
...
How do I perform a Perl substitution on a string while keeping the original?
In Perl, what is a good way to perform a replacement on a string using a regular expression and store the value in a different variable, without changing the original?
...
Why does (“foo” === new String(“foo”)) evaluate to false in JavaScript?
...t using === (triple equals, strict comparison) all the time when comparing string values, but now I find that
5 Answers
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