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Rails hidden field undefined method 'merge' error
...
You should do:
<%= f.hidden_field :service, :value => "test" %>
hidden_field expects a hash as a second argument
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How do I do a bulk insert in mySQL using node.js
...);
var conn = mysql.createConnection({
...
});
var sql = "INSERT INTO Test (name, email, n) VALUES ?";
var values = [
['demian', 'demian@gmail.com', 1],
['john', 'john@gmail.com', 2],
['mark', 'mark@gmail.com', 3],
['pete', 'pete@gmail.com', 4]
];
conn.query(sql, [values], funct...
setState vs replaceState in React.js
...components are setting their states frequently.
I asserted this with this test case.
If your current state is {a: 1}, and you call this.setState({b: 2}); when the state is applied, it will be {a: 1, b: 2}. If you called this.replaceState({b: 2}) your state would be {b: 2}.
Side note: State isn...
How to get Enum Value from index in Java?
...}
import static junit.framework.Assert.assertEquals;
import org.junit.Test;
public class MonthsTest {
@Test
public void test_indexed_access() {
assertEquals(Months.MONTHS_INDEXED[1], Months.JAN);
assertEquals(Months.MONTHS_INDEXED[2], Months.FEB);
assertEquals(Months.byOrdinal(1)...
How should I choose an authentication library for CodeIgniter? [closed]
...led roundup of all the authentication libraries for CodeIgniter when I was testing them out (just after New Year's). FWIW, I'll share it with you:
DX Auth
Pros
Very full featured
Medium footprint (25+ files), but manages to feel quite slim
Excellent documentation, although some is in slightly brok...
Converting any string into camel case
... function(match, index) {
if (+match === 0) return ""; // or if (/\s+/.test(match)) for white spaces
return index === 0 ? match.toLowerCase() : match.toUpperCase();
});
}
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How to check if DST (Daylight Saving Time) is in effect, and if so, the offset?
...e to search (i.e. is the place you are looking for is above or below you r test point?)
– epeleg
Nov 6 '14 at 8:46
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Max or Default?
... Possibly this information is out of date, as I just successfully tested both forms of DefaultIfEmpty in LINQ to SQL
– Neil
Dec 21 '11 at 10:08
3
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How to check if IEnumerable is null or empty?
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If you are working with an IEnumerable, using Count() to test for emptyness is definitely a bad idea since the Linq implementation WILL iterate over the entire collection, while Any will just move the iterator once. Keep in mind that you can't use the Count property in this case si...
Flushing footer to bottom of the page, twitter bootstrap
...dn't take trips to stack exchange, multiple gist revisions, cross-browswer testing, and eventual surrender to a simple JS trick. Yeah, I feel a bit dirty, but at least it works.
– meecect
Oct 22 '14 at 22:20
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