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Combine two ActiveRecord::Relation objects
..._name_relation.or(last_name_relation)
† Only in ActiveRecord 5+; for 4.2 install the where-or backport.
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Python debugging tips [closed]
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edited Feb 4 '10 at 14:57
community wiki
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memcpy() vs memmove()
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edited Apr 2 '18 at 9:42
Ionic
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answered Dec 11 '10 at 8:39
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Mimicking sets in JavaScript?
...initialData) {
// Usage:
// new MiniSet()
// new MiniSet(1,2,3,4,5)
// new MiniSet(["1", "2", "3", "4", "5"])
// new MiniSet(otherSet)
// new MiniSet(otherSet1, otherSet2, ...)
this.data = {};
this.add.apply(this, arguments);
}
MiniSet.prototype = {
// usage:
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How do I find the PublicKeyToken for a particular dll?
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shA.t
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answered Jun 10 '14 at 8:17
danielBdanielB
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Is there an eval() function in Java? [duplicate]
...ngine engine = manager.getEngineByName("js");
Object result = engine.eval("4*5");
There may be a better way, but this one works.
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Regex Last occurrence?
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answered Dec 4 '11 at 11:30
stemastema
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Differences in boolean operators: & vs && and | vs ||
...e are the bitwise AND and bitwise OR operators.
int a = 6; // 110
int b = 4; // 100
// Bitwise AND
int c = a & b;
// 110
// & 100
// -----
// 100
// Bitwise OR
int d = a | b;
// 110
// | 100
// -----
// 110
System.out.println(c); // 4
System.out.println(d); // 6
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