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Undo scaffolding in Rails
...e db:rollback before you destroy your scaffold. This will destroy/drop the table if there is no other migration except the scaffold's migration before it.
– Yakob Ubaidi
May 8 '14 at 11:06
...
When is TCP option SO_LINGER (0) required?
...B receives ACK
B goes to CLOSED state – i.e. is removed from the socket tables
TIME_WAIT
So the peer that initiates the termination – i.e. calls close() first – will end up in the TIME_WAIT state.
To understand why the TIME_WAIT state is our friend, please read section 2.7 in "UNIX Netwo...
Make body have 100% of the browser height
...the best solution:
html {
width: 100%;
height: 100%;
display: table;
}
body {
width: 100%;
display: table-cell;
}
html, body {
margin: 0px;
padding: 0px;
}
It is dynamic in that the html and the body elements will expand automatically if their contents overflow. I t...
JavaScript + Unicode regexes
...ate, and Escape check boxes, which strike a balance between avoiding unprintable characters and minimizing the size of the regex.
Here are some common expansions of different Unicode properties:
\p{L} (Letters):
[A-Za-z\u00AA\u00B5\u00BA\u00C0-\u00D6\u00D8-\u00F6\u00F8-\u02C1\u02C6-\u02D1\u02E0-\...
How do I create a simple 'Hello World' module in Magento?
...provides to get the information you need. I know it's all there in the SQL tables, but it's best not to think of grabbing data using raw SQL queries, or you'll go mad.
Final disclaimer. I've been using Magento for about two or three weeks, so caveat emptor. This is an exercise to get this straight ...
Still Reachable Leak detected by Valgrind
... reachable" memory can be considered a memory leak: assume you have a hash table where you add pointers to heap allocated memory as value. If you keep inserting new entries on the table, but won't remove and free those you don't need anymore, it can grow indefinitely, leaking heap memory event if th...
MySQL and GROUP_CONCAT() maximum length
...T SESSION group_concat_max_len = 1000000;
select group_concat(column) from table group by column
You can do this even in sharing hosting, but when you use an other session, you need to repeat the SET SESSION command.
share...
How to avoid variable substitution in Oracle SQL Developer with 'trinidad & tobago'
...Trinidad and Tobago' where country = 'trinidad & '|| 'tobago';
create table table99(col1 varchar(40));
insert into table99 values('Trinidad &' || ' Tobago');
insert into table99 values('Trinidad &' || ' Tobago');
insert into table99 values('Trinidad &' || ' Tobago');
insert into ...
ng-repeat finish event
I want to call some jQuery function targeting div with table. That table is populated with ng-repeat .
15 Answers
...
CSS3 transform not working
...evel or atomic inline-level element, or whose display property computes to table-row, table-row-group, table-header-group, table-footer-group, table-cell, or table-caption
an element in the SVG namespace and not governed by the CSS box model which has the attributes transform, ‘patternTransform‘...