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Converting numpy dtypes to native python types
... NumPy 1.16).
For the curious, to build a table of conversions of NumPy array scalars for your system:
for name in dir(np):
obj = getattr(np, name)
if hasattr(obj, 'dtype'):
try:
if 'time' in name:
npn = obj(0, 'D')
else:
np...
Unique (non-repeating) random numbers in O(1)?
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Initialize an array of 1001 integers with the values 0-1000 and set a variable, max, to the current max index of the array (starting with 1000). Pick a random number, r, between 0 and max, swap the number at the position r with the numbe...
Why are elementwise additions much faster in separate loops than in a combined loop?
...nk/way conflicts.
If I've guessed correctly on how you are allocating your arrays, they are likely to be aligned to the page line.
This means that all your accesses in each loop will fall on the same cache way. However, Intel processors have had 8-way L1 cache associativity for a while. But in reali...
Laravel Eloquent: How to get only certain columns from joined tables
...
public function user() {
return $this->belongs_to('User')->select(array('id', 'username'));
}
And don't forget to include the column you're joining on.
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How to store int[] array in application Settings
... Visual Studio, you should paste something like this, this is for a string array, which was what I needed <?xml version="1.0" encoding="utf-16"?> <ArrayOfString xmlns:xsi="w3.org/2001/XMLSchema-instance" xmlns:xsd="w3.org/2001/XMLSchema"> <string>String1</string> <stri...
How to handle both a single item and an array for the same property using JSON.net
...o. For the Categories property that can vary between a single item and an array, define it as a List<string> and mark it with a [JsonConverter] attribute so that JSON.Net will know to use the custom converter for that property. I would also recommend using [JsonProperty] attributes so that ...
How to Use Order By for Multiple Columns in Laravel 4?
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It would be nice if we could pass an array like: User::orderBy(array('name'=>'desc', 'email'=>'asc'))
– JoshuaDavid
Oct 7 '14 at 4:24
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Can anyone explain IEnumerable and IEnumerator to me? [closed]
... keyword named foreach that allows you to
iterate over the contents of any array type:
// Iterate over an array of items.
int[] myArrayOfInts = {10, 20, 30, 40};
foreach(int i in myArrayOfInts)
{
Console.WriteLine(i);
}
While it might seem that only array types can make use of this construct, ...
console.log timestamps in Chrome?
...mp = new Date().toJSON();
if (arguments.length)
{
// True array copy so we can call .splice()
var args = Array.prototype.slice.call(arguments, 0);
// If there is a format string then... it must
// be a string
if (typeof arguments[0] === "string")
...
Join an Array in Objective-C
I'm looking for a method of turning a NSMutableArray into a string. Is there anything on a par with this Ruby array method?
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