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Why not use java.util.logging?
... You're not comparing like for like. Why are you explicitly creating an array for j.u.l.? I guess it's because slf4j lacks a one-argument overload of logger.info(). So you're deliberately crippling j.u.l. performance to compensate for a shortcoming in slf4j's interface. You should instead code bo...
Why does the CheckBoxFor render an additional input tag, and how can I get the value using the FormC
...not checked then I get false, when the MyCheckbox is checked then I get an array of [true,false] as its value. I am serializing the whole form and pass it through ajax to the controller action eg. AddToOrder(MyModel model) where I get model.MyCheckbox = false instead of true
– ...
Checking images for similarity with OpenCV
... without openCV and any library for computer vision is to norm the picture arrays by
import numpy as np
picture1 = np.random.rand(100,100)
picture2 = np.random.rand(100,100)
picture1_norm = picture1/np.sqrt(np.sum(picture1**2))
picture2_norm = picture2/np.sqrt(np.sum(picture2**2))
After defining ...
What is difference between functional and imperative programming languages?
...
Start
Turn on your shoes size 9 1/2.
Make room in your pocket to keep an array[7] of keys.
Put the keys in the room for the keys in the pocket.
Enter garage.
Open garage.
Enter Car.
... and so on and on ...
Put the milk in the refrigerator.
Stop.
Declarative, whereof functional is a subcate...
How to iterate over rows in a DataFrame in Pandas
...n example if A is numeric and B is string, to_numpy() will cast the entire array to string, which may not be what you want. Fortunately zipping your columns together is the most straightforward workaround to this.
*Your mileage may vary for the reasons outlined in the Caveats section above.
An Obv...
How do I check if a string is valid JSON in Python?
... Despite the fact that the spec says that a JSON text must be an array or object, most encoders and decoders (including Python's) will work with any JSON value at the "top," including numbers and strings. 10 is a valid JSON number value.
– John Flatness
...
Why can't decimal numbers be represented exactly in binary?
...me point, whether it's system memory or the theoretical maximum size of an array. This is an entirely separate point to the main one of this answer, however. Even if you had a genuinely arbitrarily large number of bits to play with, you still couldn't represent decimal 0.1 exactly in a floating bina...
Rails update_attributes without save?
...n when assign_attributes tries to stringify the hash keys of the enclosing array:
@user.assign_attributes([ { model: "Sierra" }, { year: "2012" }, { looks: "Sexy" } ])
assign_attributes will raise a NoMethodError exception for stringify_keys, indicating that the first argument is not a Hash. The...
How do I use $scope.$watch and $scope.$apply in AngularJS?
... function to watch two properties together, you can watch the length of an array, etc.
When things happen "inside AngularJS" – e.g., you type into a textbox that has AngularJS two-way databinding enabled (i.e., uses ng-model), an $http callback fires, etc. – $apply has already been called, so w...
What is the best way to solve an Objective-C namespace collision?
...sn't move things out of order. Things like binary search get upset if the array they're searching isn't in sorted order as expected.
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