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How to define a function in ghci across multiple lines?
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125
For guards (like your example), you can just put them all on one line and it works (guards do n...
Is it safe to delete a NULL pointer?
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269
delete performs the check anyway, so checking it on your side adds overhead and looks uglier. ...
How do I do a multi-line string in node.js?
...${num} is ${num + num}.`);
which will print "the result of 10 plus 10 is 20." to the console.
Older versions of node
Older version of node can use a "line continuation" character allowing you to write multi-line strings such as:
'this is a \
single string'
which evaluates to: 'this is a singl...
Cast Double to Integer in Java
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edited Sep 29 '18 at 21:38
Jack Giffin
2,55622 gold badges2222 silver badges3636 bronze badges
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What is this 'Lambda' everyone keeps speaking of?
...hat perform much more useful tasks. For example filter:
var numbers = [1, 2, 3, 4];
var even = [];
// keep all even numbers from above array
for (var i=0; i<numbers.length; i++) {
if (numbers[i] % 2 === 0) {
even.push(numbers[i]);
}
}
alert(even);
// Using the filter method...
Is an array name a pointer?
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262
An array is an array and a pointer is a pointer, but in most cases array names are converted t...
What blocks Ruby, Python to get Javascript V8 speed? [closed]
...ers).
Lars Bak, the lead developer, has been literally working on VMs for 25 years (and all of those VMs have lead up to V8), which is basically his entire (professional) life. Some of the people writing Ruby VMs aren't even 25 years old.
Are there any Ruby / Python features that are blocking i...
How can I check whether an array is null / empty?
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218
There's a key difference between a null array and an empty array. This is a test for null.
in...
How can I pretty-print JSON in a shell script?
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