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How to fallback to local stylesheet (not script) if CDN fails
I am linking to the jQuery Mobile stylesheet on a CDN and would like to fall back to my local version of the stylesheet if the CDN fails. For scripts the solution is well known:
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Create PostgreSQL ROLE (user) if it doesn't exist
...@a_horse_with_no_name's answer and improved with @Gregory's comment.)
Unlike, for instance, with CREATE TABLE there is no IF NOT EXISTS clause for CREATE ROLE (up to at least pg 12). And you cannot execute dynamic DDL statements in plain SQL.
Your request to "avoid PL/pgSQL" is impossible except b...
Programmatically open new pages on Tabs
...ndow.open with a different window name will open in a new browser window like a popup, OR open in a new tab, if the user configured the browser to do so.
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Ruby on Rails production log rotation
...ls logs + logrotate
Another option is to simply configure logrotate to pick up the logs left by rails.
On Ubuntu and Debian that would be, for example, in a file called /etc/logrotate.d/rails_example_com.
/path/to/rails.example.com/tmp/log/*.log {
weekly
missingok
rotate 52
compre...
What type of hash does WordPress use?
...Press password hasher implements the Portable PHP password hashing framework, which is used in Content Management Systems like WordPress and Drupal.
They used to use MD5 in the older versions, but sadly for me, no more. You can generate hashes using this encryption scheme at http://scriptserver.ma...
How do you find the disk size of a Postgres / PostgreSQL table and its indexes
I'm coming to Postgres from Oracle and looking for a way to find the table and index size in terms of bytes/MB/GB/etc , or even better the size for all tables. In Oracle I had a nasty long query that looked at user_lobs and user_segments to give back an answer.
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VB.NET equivalent of C# property shorthand?
...me as String
This will be handled as your short version in C# is - I think they call it "Auto Property"
See also: Auto-Implemented Properties (Visual Basic)
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How does inheritance work for Attributes?
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Salman von Abbas
20.8k88 gold badges6464 silver badges5656 bronze badges
answered Aug 6 '09 at 20:11
cmdematos.comcmdemato...
Why does a RegExp with global flag give wrong results?
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A RegExp object with the g flag keeps track of the lastIndex where a match occurred, so on subsequent matches it will start from the last used index, instead of 0. Take a look:
var query = 'Foo B';
var re = new RegExp(query, 'gi');
var result = [];
resu...
Remove rows with all or some NAs (missing values) in data.frame
I'd like to remove the lines in this data frame that:
16 Answers
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