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Difference between std::result_of and decltype
...with result_of without using binders or lambdas
– David Rodríguez - dribeas
Dec 22 '11 at 9:19
2
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How do you discover model attributes in Rails?
..., you can use Model.inspect.
irb(main):001:0> User.inspect
=> "User(id: integer, email: string, encrypted_password: string,
reset_password_token: string, reset_password_sent_at: datetime,
remember_created_at: datetime, sign_in_count: integer,
current_sign_in_at: datetime, last_sign_in_at: ...
How do you roll back (reset) a Git repository to a particular commit? [duplicate]
...
git reset --hard <tag/branch/commit id>
Notes:
git reset without the --hard option resets the commit history, but not the files. With the --hard option the files in working tree are also reset. (credited user)
If you wish to commit that state so that t...
No secret option provided to Rack::Session::Cookie warning?
...
/usr/local/lib/ruby/gems/1.9.1/gems/actionpack-3.2.9/lib/action_dispatch/middleware/session/abstract_store.rb
module Compatibility
def initialize(app, options = {})
options[:key] ||= '_session_id'
#fixed warning - SECURITY WARNING: No secret option provided to...
Clear form field after select for jQuery UI Autocomplete
...
It did fix it. I tried to accept, but it told me I couldn't for 7 more minutes. Accepted. Thanks.
– Jon F Hancock
Apr 1 '10 at 16:42
...
Query for array elements inside JSON type
...e explained in the manual.
Both queries use an implicit JOIN LATERAL.
SQL Fiddle.
Closely related answer:
Query for element of array in JSON column
jsonb in Postgres 9.4+
Use the equivalent jsonb_array_elements().
Better yet, use the new "contains" operator @> (best in combination with a matchi...
What are the Dangers of Method Swizzling in Objective-C?
...ckling the real question, most answers have skirted the issue and simply said not to use swizzling.
Using method sizzling is like using sharp knives in the kitchen. Some people are scared of sharp knives because they think they'll cut themselves badly, but the truth is that sharp knives are safer.
...
How to immediately see compile errors in project tree of IntelliJ Idea?
I'm wondering if it is possible to configure IntelliJ Idea to immediately show compile errors on the class files in the project tree. Currently I need to manually trigger the recompilation to see error marks on my classes if the class cannot be compiled.
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Using JQuery to check if no radio button in a group has been checked
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var len = $('#your_form_id input:radio:checked').length;
if (!len) {
alert("None checked");
};
alert("checked: "+ len);
share
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Xcode changes unmodified storyboard and XIB files
...Open the storyboard file, and find something like this
<viewController id=”ory-XY-OBM” sceneMemberID=”MyController1”>.
You can safely commit only changes in this section and ignore everything else. If you changed segues or constraints, also commit anything that has “ory-XY-OBM” in...