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how to permit an array with strong parameters
...me, DateTime, StringIO, IO,
ActionDispatch::Http::UploadedFile and Rack::Test::UploadedFile.
To declare that the value in params must be an array of permitted scalar values map the key to an empty array:
params.permit(:id => [])
In my app, the category_ids are passed to the create acti...
Are there any disadvantages to always using nvarchar(MAX)?
...
I checked some articles and find useful test script from this: http://www.sqlservercentral.com/Forums/Topic1480639-1292-1.aspx
Then changed it to compare between NVARCHAR(10) vs NVARCHAR(4000) vs NVARCHAR(MAX) and I don't find speed difference when using specified ...
LINQ .Any VS .Exists - What's the difference?
... }
if (!s.Contains("sdfsd"))
{
}
testing list generator:
private List<string> Generate(int count)
{
var list = new List<string>();
for (int i = 0; i < count; i++)
{
list.Add( new string(
Enu...
RRSet of type CNAME with DNS name foo.com. is not permitted at apex in zone bar.com
...tionality you require. Have a look at http://docs.aws.amazon.com/Route53/latest/DeveloperGuide/CreatingAliasRRSets.html
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How to disable scrolling temporarily?
...adding event
var supportsPassive = false;
try {
window.addEventListener("test", null, Object.defineProperty({}, 'passive', {
get: function () { supportsPassive = true; }
}));
} catch(e) {}
var wheelOpt = supportsPassive ? { passive: false } : false;
var wheelEvent = 'onwheel' in document.c...
Unit testing with Spring Security
...vironment: session-scoped in a Servlet container, thread-scoped in a JUnit test, etc. The real limiting factor of a Singleton is when it provides an implementation that is inflexible to different environments.
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Best JavaScript compressor [closed]
...pressor and Google Closure, it compresses better than YUI on all scripts I tested it on, and it's safer than Closure (knows to deal with "eval" or "with").
Other than whitespace removal, UglifyJS also does the following:
changes local variable names (usually to single characters)
joins consecutiv...
How to strip all whitespace from string
...ring.translate(None, " \t\r\n\v"). It only takes 83% as long as Roger's fastest (split and join) technique. Not sure if it covers all the white space characters that split does, but it will probably suffice for most ASCII applications.
– brianmearns
Mar 15 '12 ...
Android EditText delete(backspace) key event
... from XML remember to use the full package name as the tag:
<cc.buttfu.test.ZanyEditText
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="@+id/somefield"
></cc.buttfu.test.ZanyEditText>
...
CHECK constraint in MySQL is not working
...ple for BEFORE INSERT working after MySQL 5.5
DELIMITER $$
CREATE TRIGGER `test_before_insert` BEFORE INSERT ON `Test`
FOR EACH ROW
BEGIN
IF CHAR_LENGTH( NEW.ID ) < 4 THEN
SIGNAL SQLSTATE '12345'
SET MESSAGE_TEXT := 'check constraint on Test.ID failed';
END IF;
END$$ ...