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Trim string in JavaScript?
...pt-5-support-and-more.aspx
Chrome: 5+
Opera: 10.5+
ECMAScript 5 Support Table: http://kangax.github.com/es5-compat-table/
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How do BitTorrent magnet links work?
... this using a separate peer-to-peer network2 operating a "distributed hash table" (DHT). A DHT is a big distributed index which maps torrents (identified by infohashes) to lists of peers (identified by IP address and ports) who are participating in a swarm for that torrent (uploading/downloading dat...
PHP date() format when inserting into datetime in MySQL
...nsforming it by using the FROM_UNIXTIME function.
mysql> insert into a_table values(FROM_UNIXTIME(1231634282));
Query OK, 1 row affected (0.00 sec)
mysql> select * from a_table;
+---------------------+
| a_date |
+---------------------+
| 2009-01-10 18:38:02 |
+----------------...
Types in MySQL: BigInt(20) vs Int(20)
... will accept.
Practically, it affects only the ZEROFILL option:
CREATE TABLE foo ( bar INT(20) ZEROFILL );
INSERT INTO foo (bar) VALUES (1234);
SELECT bar from foo;
+----------------------+
| bar |
+----------------------+
| 00000000000000001234 |
+----------------------+
It'...
What are the differences between “=” and “
...expression). In fact, ?Syntax in R gives the following operator precedence table, from highest to lowest:
…
‘-> ->>’ rightwards assignment
‘<- <<-’ assignment (right to left)
‘=’ assignment (right to left)
…
But is this the on...
python pandas dataframe to dictionary
...
Nice and elegant solution, but on a 50k rows table, it is about 6 times slower than my ugly solution below.
– dalloliogm
Jun 24 '14 at 10:44
...
How can I see the SQL generated by Sequelize.js?
...I need to check if they are correct. In particular, I am interested in the table creation commands.
4 Answers
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Rails find record with zero has_many records associated [duplicate]
... do includes it does a join. In a SQL join, you get all the fields of both tables (in this case cities and photos) for each row unless you change the projection of the query. So, he's using that to his advantage to check whether a required database identifier is present. If it's not, then there was ...
Why can't I use switch statement on a String?
...nse, they are used as an index (after subtracting the lowest value) into a table of instruction pointers—the tableswitch instruction.
If the constants are sparse, a binary search for the correct case is performed—the lookupswitch instruction.
In de-sugaring a switch on String objects, both i...
Difference between JOIN and INNER JOIN
...specify CROSS JOIN.
OR
For an inner join, the syntax is:
SELECT ...
FROM TableA
[INNER] JOIN TableB
(in other words, the "INNER" keyword is optional - results are the same
with or without it)
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