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Setting an object to null vs Dispose()
...cts which are no longer reachable, but which have a finalizer (written as ~Foo() in C#, somewhat confusingly - they're nothing like C++ destructors). It runs the finalizers on these objects, just in case they need to do extra cleanup before their memory is freed.
Finalizers are almost always used t...
How does origin/HEAD get set?
... HEAD branch (remote HEAD is ambiguous, may be one of the following):
foo
master
Oddly, although the notion of HEAD printed this way will change if things change on the remote (e.g. if foo is removed), it doesn't actually update refs/remotes/origin/HEAD. This can lead to really odd situat...
How to retrieve inserted id after inserting row in SQLite using Python?
...nect(':memory:')
cursor=connection.cursor()
cursor.execute('''CREATE TABLE foo (id integer primary key autoincrement ,
username varchar(50),
password varchar(50))''')
cursor.execute('INSERT INTO foo (username,password) VALUES (?...
Max length UITextField
...u set the maximum number of characters that can be entered into a UITextField using swift? , I saw that if I use all 10 characters, I can't erase the character too.
...
How to make IPython notebook matplotlib plot inline
...
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What's the easiest way to call a function every 5 seconds in jQuery? [duplicate]
JQuery, how to call a function every 5 seconds.
7 Answers
7
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Why is Class.newInstance() “evil”?
... this very simple class (does not matter that it is broken):
static class Foo {
public Foo() throws IOException {
throw new IOException();
}
}
And you try to create an instance of it via reflection. First Class::newInstance:
Class<Foo> clazz = ...
try {
cla...
What's the difference between a Future and a Promise?
What's the difference between Future and Promise ?
They both act like a placeholder for future results, but where is the main difference?
...
Convert an array of primitive longs into a List of Longs
... bit of an easy, headdesk sort of question, but my first attempt surprisingly completely failed to work. I wanted to take an array of primitive longs and turn it into a list, which I attempted to do like this:
...
Why does flowing off the end of a non-void function without returning a value not produce a compiler
... as a curiosity, look what this code does:
#include <iostream>
int foo() {
int a = 5;
int b = a + 1;
}
int main() { std::cout << foo() << std::endl; } // may print 6
This code has formally undefined behaviour, and in practice it's calling convention and architecture depe...