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Why '&&' and not '&'?
...if you translate true to 1 and false to 0, then do bitwise operation, then convert non-zero to true and zero to false; it happens that the result will be the same had you just used logical operator (check this for exercise).
Another important distinction is also that a logical operator is short-cir...
Split List into Sublists with LINQ
... Dividing by three has the effect of grouping them into groups of 3. Then convert each group to a list and the IEnumerable of List to a List of Lists
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How can I assign an ID to a view programmatically?
...r) for this. In the XML, even though you're setting a String id, this gets converted into an integer. Due to this, you can use any (positive) Integer for the Views you add programmatically.
According to View documentation
The identifier does not have to be unique in this view's hierar...
How many concurrent requests does a single Flask process receive?
...a single core has multiple execution units and an instruction decoder that converts the "machine code" seen from the software side into the actual hardware micro-ops that are dispatched to the individual execution units.
– Michael Geary
Aug 10 '19 at 17:23
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Transactions in REST?
...playing with semantics to me; I'm uncomfortable with the nominalization of converting verbs into nouns to make it RESTful, "because it uses nouns (URIs) instead of verbs (RPC calls)". i.e. the noun "committed transaction resource" instead of the verb "commit this transaction". I guess one advantage...
Difference between __str__ and __repr__?
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__repr__: representation of python object usually eval will convert it back to that object
__str__: is whatever you think is that object in text form
e.g.
>>> s="""w'o"w"""
>>> repr(s)
'\'w\\\'o"w\''
>>> str(s)
'w\'o"w'
>>> eval(str(s))==s
Traceb...
What specific productivity gains do Vim/Emacs provide over GUI text editors?
...m gives you very specific and foolproof ways of setting file encodings and converting between them. The very first thing that impressed me about Vim is how perfectly it handles tab/space indentation options and Unix/DOS linebreaks compared to other editors that I had problems with at the time.
Man...
How to write the Fibonacci Sequence?
...a short range). Try then to figure out where your program is wrong. Try to convert the "by-hand method" in code. This is for exercise, to learn. I could put down two lines of code but I don't think you'll learn anything from them.
– Andrea Ambu
Feb 3 '09 at 23:...
Mimicking sets in JavaScript?
...ray of all keys in the Set
// returns the original key (not the string converted form)
keys: function() {
var results = [];
this.each(function(data) {
results.push(data);
});
return results;
},
// clears the Set
clear: function() {
...
Sending files using POST with HttpURLConnection
...s.attachmentFileName + "\"" + this.crlf);
request.writeBytes(this.crlf);
Convert Bitmap to ByteBuffer:
//I want to send only 8 bit black & white bitmaps
byte[] pixels = new byte[bitmap.getWidth() * bitmap.getHeight()];
for (int i = 0; i < bitmap.getWidth(); ++i) {
for (int j = 0; j <...