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Java associative-array
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'List' is an abstract class and 'ArrayList' is one of the implementations of that class, there are other type of lists derived from the same abstract class. So because of this an ArrayList is also a List. You cannot create an instance of an abstract class, just use it as ...
can you host a private repository for your organization to use with npm?
...you'll be able to read any published packages, in addition to your private ones, and by default will only publish internally. If you then want to publish a package for the whole world to see, you can simply override the --registry config for that command.
There's also an excellent tutorial on how ...
R command for setting working directory to source file location in Rstudio
...me. So changing the working directory to that of the current file can be done with:
setwd(getSrcDirectory()[1])
This does not work in RStudio if you Run the code rather than Sourceing it. For that, you need to use rstudioapi::getActiveDocumentContext.
setwd(dirname(rstudioapi::getActiveDocumen...
Multiple dex files define Landroid/support/v4/accessibilityservice/AccessibilityServiceInfoCompat
...of, but, then again, I have not researched this point. IMHO, off the cuff, one or both of those JAR files feel mis-packaged, as the module in common should be factored out into its own JAR.
– CommonsWare
Jan 21 '14 at 21:15
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Method Resolution Order (MRO) in new-style classes?
...t overrides (i.e., C's override of member x) actually work sensibly.
It's one of the reasons that old-style classes should be avoided: multiple inheritance with "diamond-like" patterns just doesn't work sensibly with them, while it does with new-style.
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What is a higher kinded type in Scala?
...ou can view types like Maybe and Either as type-level functions: they take one or more types, and return a type.
A function is higher-order if it has an order greater than 1, where the order is (informally) the nesting depth, to the left, of function arrows:
Order 0: 1 :: Int
Order 1: chr :: Int -&...
Why in Java 8 split sometimes removes empty strings at start of result array?
...dex = m.end();
} else if (matchList.size() == limit - 1) { // last one
String match = input.subSequence(index,
input.length()).toString();
matchList.add(match);
index = m.end();
}
}
// If no mat...
How to force Chrome browser to reload .css file while debugging in Visual Studio?
...
There are much more complicated solutions, but a very easy, simple one is just to add a random query string to your CSS include.
Such as src="/css/styles.css?v={random number/string}"
If you're using php or another server-side language, you can do this automatically with time(). So it wou...
JavaScript post request like a form submit
...mes you are not using a library.
// It can be made less wordy if you use one.
const form = document.createElement('form');
form.method = method;
form.action = path;
for (const key in params) {
if (params.hasOwnProperty(key)) {
const hiddenField = document.createElement('input');...
Like Operator in Entity Framework?
...ntities with string fields, but it doesn't appear to be supported. Has anyone else tried to do something like this?
9 Answ...