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difference between throw and throw new Exception()
...'s also a third way where you pass an inner exception:
try { ... }
catch (FooException e) {
throw new BarException("foo", e);
}
I'd recommend using:
the first if you want to do some cleanup in error situation without destroying information or adding information about the error.
the third i...
Best way to add comments in erb
...sing real ERB. However, I've run into issues with code like this <% for foo in bar # loop over bar %>.. This was OK in the ERB that shipped with 1.8.6, but when I switched to 1.8.7, it caused lots of problems.
– John Douthat
May 5 '10 at 22:20
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How to enable or disable an anchor using jQuery?
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Actually My coding is in Rails and my coding is <%= foo.add_associated_link('Add email', @project.email.build) %> when it I render it into browser i can see the email but i cannot disabled it even i tried with coding such as e.preventDefault() but of no result
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How does JavaScript .prototype work?
...s Parent.prototype.
Finally, if you create a new object via Object.create(foo), the resulting object's [[Prototype]] will be set to foo.
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How to get the HTML for a DOM element in javascript
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Use outerHTML:
var el = document.getElementById( 'foo' );
alert( el.outerHTML );
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SQL Server equivalent to Oracle's CREATE OR REPLACE VIEW
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As of SQL Server 2016 you have
DROP TABLE IF EXISTS [foo];
MSDN source
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Replace only some groups with Regex
...u can also use non capturing groups - good for groups you don't use. In (?:foo)(bar), $1 will replace bar. more details
– Patrick
May 28 '18 at 20:21
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How do I disable the “Press ENTER or type command to continue” prompt in Vim?
...;CR>
to the map command.
map <F5> :wall!<CR>:!sbcl --load foo.cl<CR><CR>
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How do I get the last inserted ID of a MySQL table in PHP?
...s the last id inserted in the current connection
mysql_query('INSERT INTO FOO(a) VALUES(\'b\')');
$id = mysql_insert_id();
plus using max is a bad idea because it could lead to problems if your code is used at same time in two different sessions.
That function is called mysql_insert_id
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How to change options of with jQuery?
...r options = [
{text: "one", value: 1},
{text: "two", value: 2}
];
$("#foo").replaceOptions(options);
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