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How to determine if a number is odd in JavaScript
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Do I have to make an array really large that has a lot of even numbers
No. Use modulus (%). It gives you the remainder of the two numbers you are dividing.
Ex. 2 % 2 = 0 because 2/2 = 1 with 0 remainder.
Ex2. 3 % 2 = 1 because 3/2 = 1 with 1 ...
How to run a single test from a rails test suite?
...folder. For example, if I want to run the test activesupport/test/core_ext/array_ext_test.rb I should be in activesupport/ first.
– Vincent B.
May 11 '12 at 7:13
3
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Proper Repository Pattern Design in PHP?
...t later.
R (Read) is not so easy. No models here, just value objects. Use arrays if you prefer. These objects may represent a single model or a blend of many models, anything really. These are not very interesting on their own, but how they are generated is. I'm using what I'm calling Query Objects...
JavaScript, elegant way to check nested object properties for null/undefined [duplicate]
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function checkNested(obj /*, level1, level2, ... levelN*/) {
var args = Array.prototype.slice.call(arguments),
obj = args.shift();
for (var i = 0; i < args.length; i++) {
if (!obj.hasOwnProperty(args[i])) {
return false;
}
obj = obj[args[i]];
}
return true;
}
va...
Difference between single quotes and double quotes in Javascript [duplicate]
...y been testing on desktop Firefox. This works fine on Firefox:
var searchArray = searchValue.split(' '); // Split a string at the spaces.
BUT... it doesn't work on mobile Safari (iPhone 3GS running iOS 6.1). To make it work on mobile Safari, you have to use double quotes:
var searchArray = sea...
In java how to get substring from a string till a character c?
..."; // full file name
String[] parts = filename.split("\\."); // String array, each element is text between dots
String beforeFirstDot = parts[0]; // Text before the first dot
Of course, this is split into multiple lines for clairity. It could be written as
String beforeFirstDot = filename...
How do I check if string contains substring? [duplicate]
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@njenson: It is for strings - just not for Array objects. But thanks for freaking me out. stackoverflow.com/questions/21772308/…
– J Bryan Price
Sep 1 '16 at 21:35
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Cannot use identity column key generation with ( TABLE_PER_CLASS )
...ws, multi-user support, transactions, query optimization, inheritance, and arrays. Does not support selecting data across different databases.
MySQL
MySQL uses SQL92 as its foundation. Runs on countless platforms. Mysql can construct queries that can join tables from different databases. Supports b...
Is there a way to dump a stack trace without throwing an exception in java?
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If you want to access the frame, you can use t.getStackTrace() to get an array of stack frames.
Be aware that this stacktrace (just like any other) may be missing some frames if the hotspot compiler has been busy optimizing things.
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Best way to parseDouble with comma as decimal separator?
...place(',','.'))
...is very quick as it searches the underlying character array on a char-by-char basis. The string replace versions compile a RegEx to evaluate.
Basically replace(char,char) is about 10 times quicker and since you'll be doing these kind of things in low-level code it makes sense t...