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Best Practices: working with long, multiline strings in PHP?
... pizza pies."
For smaller things, I find it is often easier to work with array structures compared to concatenated strings.
Related: implode vs concat performance
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Why switch is faster than if
...n to have loads of packets memory isn't really a large cost these days and arrays are pretty fast. You also cannot rely on a switch statement to auto generate a jump table and as such it's easier to generate the jump table scenario yourself. As you can see in below example we assume a maximum of 255...
How do I render a partial of a different format in Rails?
...
private
def setup_with_formats(context, options, block)
formats = Array(options[:formats])
@lookup_context.formats = formats | @lookup_context.formats
setup_without_formats(context, options, block)
end
alias_method_chain :setup, :formats
end
See http://railsguides.net/2012/08...
Converting a generic list to a CSV string
...ues;
string csv = String.Join(",", myValues.Select(x => x.ToString()).ToArray());
For the general case:
IEnumerable<T> myList;
string csv = String.Join(",", myList.Select(x => x.ToString()).ToArray());
As you can see, it's effectively no different. Beware that you might need to actuall...
Android AlertDialog Single Button
...multiOption_dialog">Multi Options Dialog</string>
<string-array name="fruit_name">
<item>Apple</item>
<item>Banana</item>
<item>Orange</item>
<item>Grapes</item>
<item>Watermelon</ite...
javascript set a variable if undefined
...true // true
c ??= true // false
// Equivalent to
a = a ?? true
Object/Array Examples
let x = ["foo"]
let y = { foo: "fizz" }
x[0] ??= "bar" // "foo"
x[1] ??= "bar" // "bar"
y.foo ??= "buzz" // "fizz"
y.bar ??= "buzz" // "buzz"
x // Array [ "foo", "bar" ]
y // Object { foo: "fizz", bar:...
Generate a heatmap in MatPlotLib using a scatter data set
...tions as scatter(). I honestly don't understand why imshow() converts a 2d array of floats into blocks of appropriate color, whereas I do understand what scatter() is supposed to do with such an array.
– gotgenes
Jul 21 '11 at 19:10
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Why covariance and contravariance do not support value type
...get variance.
The easiest way to see the difference is simply consider an Array: an array of Value types are put together in memory contiguously (directly), where as an array of Reference types only have the reference (a pointer) contiguously in memory; the objects being pointed to are separately a...
How to find keys of a hash?
...g to Object.prototype, as it breaks every normal loop like: for (var k in array) { } or for (var k in object), and that idiom - though it might be faulty - is extremely common. For example according to Matthew Darwin's answer below, it breaks Google Maps.
– Sam Watkins
...
Dynamic cell width of UICollectionView depending on label width
...lectionView, that loads cells from reusable cell, which contains label. An array provides content for that label. I can resize label width depending on content width easily with sizeToFit. But I cannot make cell to fit label.
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