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Call Go functions from C
...ected, if ever? (New to Go, and thus to unsafe.Pointer). Also, what about API like SQLite3 that take a void* userdata, but also an optional "deleter" function for userdata? Can that be used to interact with the GC, to tell it "now it's OK to reclaim that userdata, provided the Go side doesn't refer...
std::function and std::bind: what are they, and when should they be used?
... _2, _1, _3);
I don't recommend using it just because you don't like the API, but it has potential practical uses for example because:
not2(bind(less<T>, _2, _1));
is a less-than-or-equal function (assuming a total order, blah blah). This example normally isn't necessary since there alrea...
What's the difference between event.stopPropagation and event.preventDefault?
...alert("parent click event fired!")
})
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="foo">
<button id="but">button</button>
</div>
stopPropagation
$("#but").click(function (event) {
event.sto...
Understanding NSRunLoop
...ackground threads, but we don't do this
ourselves much anymore, as newer APIs eliminate the need to do so. But
it appears that URLSession does, e.g., here is simple request, running [see the left panel of the image]
completion handlers on the main queue, and you can see it has a run
loop on ...
What do
I can see in the API docs for Predef that they're subclasses of a generic function type (From) => To, but that's all it says. Um, what? Maybe there's documentation somewhere, but search engines don't handle "names" like "
...
How to elegantly deal with timezones
...base in hand, you can use the ZoneInfo (tz database / Olson database) .NET API. Note that there isn't a binary distribution, you'll have to download the latest version and compile it yourself.
At the time of this writing, it currently parses all of the files in the latest data distribution (I actua...
Servlet returns “HTTP Status 404 The requested resource (/servlet) is not available”
...ng Eclipse, you can find instructions in How do I import the javax.servlet API in my Eclipse project?
Testing the servlet individually
Provided that the server runs on localhost:8080, and that the WAR is successfully deployed on a context path of /contextname (which defaults to the IDE project nam...
GridLayout and Row/Column Span Woe
...
Starting from API 21, the GridLayout now supports the weight like LinearLayout. For details please see the link below:
https://stackoverflow.com/a/31089200/1296944
...
Scala type programming resources
...very active project that is providing functionality that extends the Scala API using various type-level programming features. It is a very interesting project that has a big following.
MetaScala is a type-level library for Scala, including meta types for natural numbers, booleans, units, HList, etc...
How to pass objects to functions in C++?
... not supposed to write back a value. This convention is seen in many glibc APIs. Example:
void func (string* str, /* ... */) {
if (str != NULL) {
*str = some_value; // assign to *str only if it's non-null
}
}
Just like all pass by reference/pointer, not thread-safe.
...