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How to position text over an image in css
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Sadly this ends up being a really bad option if you want your site to follow modern, responsive practices as you're fixing the size of the container (the answer was from 2012 so its understandably out of date). A much better solution can be found here: stackoverflow.com...
How to implement a good __hash__ function in python [duplicate]
... same value for objects that are equal. It also shouldn't change over the lifetime of the object; generally you only implement it for immutable objects.
A trivial implementation would be to just return 0. This is always correct, but performs badly.
Your solution, returning the hash of a tuple of p...
Using C++ library in C code
...l pass the call on to the realFoo() function which is implemented in C++.
If you need to expose a full C++ class with data members and methods, then you may need to do more work than this simple function example.
share
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Change values while iterating
...that range copies the values from the slice you're iterating over.
The specification about range says:
Range expression 1st value 2nd value (if 2nd variable is present)
array or slice a [n]E, *[n]E, or []E index i int a[i] E
So, range us...
Random record from MongoDB
...m the mycoll collection.
db.mycoll.aggregate([{ $sample: { size: 1 } }])
If you want to select the random document(s) from a filtered subset of the collection, prepend a $match stage to the pipeline:
// Get one random document matching {a: 10} from the mycoll collection.
db.mycoll.aggregate([
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CURL to access a page that requires a login from a different page
I have 2 pages: xyz.com/a and xyz.com/b . I can only access xyz.com/b if and only if I login to xyz.com/a first. If accessing xyz.com/b without going through the other, I simply get access denied (no redirect to login) via the browser. Once I login at xyz.com/a , I can access the other.
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jQuery UI Sortable Position
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You can use the ui object provided to the events, specifically you want the stop event, the ui.item property and .index(), like this:
$("#sortable").sortable({
stop: function(event, ui) {
alert("New position: " + ui.item.index());
}
});
You can see a working d...
Increment a database field by 1
With MySQL, if I have a field, of say logins, how would I go about updating that field by 1 within a sql command?
5 Answers...
App Inventor 2 浮点数与字节转换教程 · App Inventor 2 中文网
...Interval(function() {
var msg = window.AppInventor.getWebViewString();
if (msg && msg !== "") {
try {
var data = JSON.parse(msg);
if (data.cmd === "float2bytes") {
var buf = new ArrayBuffer(4);
var view = new DataView(buf);
view.setFloat32(0, data.value, d...
What is the real overhead of try/catch in C#?
...ect this happens only when the exception is thrown (but I don't know), and if so, this would be decently sized hidden cost every time an exception is thrown... so it's not like you are just jumping from one place in the code to another, there is a lot going on.
I don't think it's a problem as long ...