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How do I check two or more conditions in one ?
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Recommendation:
when you have more than one condition with and and or is better separate with () to avoid verification problems
<c:if test="${(not validID) and (addressIso == 'US' or addressIso == 'BR')}">
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What specific productivity gains do Vim/Emacs provide over GUI text editors?
...e as the "windowed" interface that Vim/Emacs give you. You can see two or more files at the same time side-by-side. The more you can see on-screen, the more you free your mind to think about your problem rather than doing mental bookkeeping of variable names and function signatures.
Don't underest...
Swift - How to convert String to Double
... converted (i.e.: bad user input).
let lessPrecisePI = Float("3.14")
let morePrecisePI = Double("3.1415926536")
let invalidNumber = Float("alphabet") // nil, not a valid number
Unwrap the values to use them using if/let
if let cost = Double(textField.text!) {
print("The user entered a valu...
Can you attach a UIGestureRecognizer to multiple views?
...sture recognizer once, I'm not sure if this is a bug or it just needs some more documentation.
12 Answers
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NUnit vs. xUnit
...dely used, well documented and has a large community, whereas xUnit.net is more modern, more TDD adherent, more extensible, and also trending in .NET Core development. It's also well documented.
In addition to that, the main difference I noticed is the way that xUnit.net runs the test methods. So, ...
What is the performance cost of having a virtual method in a C++ class?
...at matters is whether the function has been run before recently (making it more likely to be in cache), and whether your architecture can predict static (not virtual) branches and fetch those instructions into cache ahead of time. My PPC does not, but maybe Intel's most recent hardware does.
My ti...
What are some good resources for learning about Artificial Neural Networks? [closed]
...mple gradient descent, but this can be much slower and less effective than more nuanced methods like
Once you've got the basic ideas down you can start to experiment with different "squashing" functions in your hidden layer, adding various kinds of regularization, and various tweaks to make learni...
PHP filesize MB/KB conversion [duplicate]
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This answer is more efficient than the others below. It avoids using the log function or successive division statements to identify the unit.
– Ali Gangji
May 25 '13 at 2:34
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Storing money in a decimal column - what precision and scale?
...f thumb for storage of fixed point decimal values is to store at least one more decimal place than you actually require to allow for rounding. One of the reasons for mapping the old Currency type in the front end to DECIMAL(19, 4) type in the back end was that Currency exhibited bankers' rounding by...