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Get a random item from a JavaScript array [duplicate]
... not a valid substitution for Math.floor. Using round would cause accidentally referencing an undefined index, say in the case Math.random() is 0.95 and items.length is 5. Math.round(0.95*5) is 5, which would be an invalid index. floor(random) will always be zero in your example.
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Container View Controller Examples [closed]
...d an example implementation would be nice. Google has turned up nothing at all.
7 Answers
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How to check if a file exists in Go?
... You could use os.IsExist() depending the case, could be more idiomatically instead of making a double negation when doing !os.IsNotExistant()
– Ariel Monaco
Feb 17 at 3:18
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How do I make a delay in Java?
...ewSingleThreadScheduledExecutor();
executorService.scheduleAtFixedRate(App::myTask, 0, 1, TimeUnit.SECONDS);
}
private static void myTask() {
System.out.println("Running");
}
And in Java 7:
public static void main(String[] args) {
final ScheduledExecutorService executorService = Exec...
How do I use the includes method in lodash to check if an object is in the collection?
...
The includes (formerly called contains and include) method compares objects by reference (or more precisely, with ===). Because the two object literals of {"b": 2} in your example represent different instances, they are not equal. Notice:
({"b": 2}...
A Java API to generate Java source files [closed]
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Sun provides an API called CodeModel for generating Java source files using an API. It's not the easiest thing to get information on, but it's there and it works extremely well.
The easiest way to get hold of it is as part of the JAXB 2 RI - th...
How to put multiple statements in one line?
...pproximate what you want.
As for the try ... except thing: It would be totally useless without the except. try says "I want to run this code, but it might throw an exception". If you don't care about the exception, leave away the try. But as soon as you put it in, you're saying "I want to handle a ...
What exactly is a Context in Java? [duplicate]
...'s ApplicationContext, Android's Context, JNDI's InitialContext, etc. They all often follow the Facade Pattern which abstracts the environmental details the enduser doesn't need to know about away in a single interface/class.
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HTML Entity Decode [duplicate]
...de creates an empty (detached from DOM) div and sets it's innerHTML and finally retrieved back as normal text. It's not surrounding it with a DIV, but putting it in a div. I putting some emphasis over this since it's crucial to understand how jQuery works.
– Christian
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What is the fastest integer division supporting division by zero no matter what the result is?
...x, int y)
{
y += y == 0;
return x/y;
}
The compiler basically recognizes that it can use a condition flag of the test in the addition.
As per request the assembly:
.globl f
.type f, @function
f:
pushl %ebp
xorl %eax, %eax
movl %esp, %ebp
movl 12(%...