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ActiveRecord: List columns in table from console
...ou can just type the model name:
> User
gives:
User(id: integer, name: string, email: string, etc...)
In rails four, you need to establish a connection first:
irb(main):001:0> User
=> User (call 'User.connection' to establish a connection)
irb(main):002:0> User.connection; nil #call ...
What is the advantage to using bloom filters?
... bits, for small integers, to an
arbitrary number of bits, such as for
strings (tries are an exception, since
they can share storage between
elements with equal prefixes). Linked
structures incur an additional linear
space overhead for pointers. A Bloom
filter with 1% error and an opti...
jQuery removeClass wildcard
...ot, because the removeClass function will strip whitespace from your class string for you via classes = ( value || "" ).match( rnotwhite ) || [];
– eephillip
Jan 7 '15 at 22:11
...
Are nested HTML comments possible?
...ut delving into the SGML that underlies it)) have come to believe that the string <!-- begins a comment, and the string --> ends a comment.
Actually, <! and > delimit an SGML declaration within your HTML document, such as the DOCTYPE declaration we've all seen at the top of our pages. W...
How to mount a host directory in a Docker container
... mount instead of -v. Here's its documentation:
--mount: Consists of multiple key-value pairs, separated by commas. Each key/value pair takes the form of a <key>=<value> tuple. The --mount syntax is more verbose than -v or --volume, but the order of the keys is not significant, and the...
Problem with converting int to string in Linq to entities
...
With EF v4 you can use SqlFunctions.StringConvert. There is no overload for int so you need to cast to a double or a decimal. Your code ends up looking like this:
var items = from c in contacts
select new ListItem
{
Va...
Groovy executing shell commands
Groovy adds the execute method to String to make executing shells fairly easy;
7 Answers
...
Create a string of variable length, filled with a repeated character
...as been asked by someone else in it's Java form here: Java - Create a new String instance with specified length and filled with specific character. Best solution?
...
How to fetch the row count for all tables in a SQL SERVER database [duplicate]
...unt of all tables in a database:
CREATE TABLE #counts
(
table_name varchar(255),
row_count int
)
EXEC sp_MSForEachTable @command1='INSERT #counts (table_name, row_count) SELECT ''?'', COUNT(*) FROM ?'
SELECT table_name, row_count FROM #counts ORDER BY table_name, row_count DESC
DROP TABLE ...
How to move the cursor word by word in the OS X Terminal
... edited Oct 7 '11 at 0:35
dcharles
4,46211 gold badge2828 silver badges2929 bronze badges
answered Sep 17 '08 at 9:04
...