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How is “=default” different from “{}” for default constructor and destructor?
...structor, then things won't compile whether or not you destruct a Widget:
test.cpp:8:7: error: field of type 'A' has private destructor
A a_;
^
test.cpp:4:5: note: declared private here
~A();
^
1 error generated.
...
How to filter SQL results in a has-many-through relation
...l know, curiosity has a reputation for killing cats.
So, which is the fastest way to skin a cat?
The precise cat-skinning environment for this test:
PostgreSQL 9.0 on Debian Squeeze with decent RAM and settings.
6.000 students, 24.000 club memberships (data copied from a similar database with r...
How to mock the Request on Controller in ASP.Net MVC?
...ol isAjaxRequest)
{
var httpRequestBase = MockRepository.GenerateStub<HttpRequestBase>();
if (isAjaxRequest)
{
httpRequestBase.Stub(r => r["X-Requested-With"]).Return("XMLHttpRequest");
}
var httpContextBase = MockRepository.Genera...
How to fix org.hibernate.LazyInitializationException - could not initialize proxy - no Session
... I'd seriously recommend to use this annotation on top of class only for testing. Real code should mark each method as transaction in class separately. Unless all the methods in class will require opened connection with transaction to database.
– m1ld
Dec 6 '...
Should I return a Collection or a Stream?
... to count them
public int countPlayersWho(Predicate<? super Player> test);
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Checking whether something is iterable
... @Gil You're absolutely right, oops! I should have copy-pasted tested code instead of typing directly in a post.
– Domino
Nov 6 '18 at 23:20
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What's the idiomatic syntax for prepending to a short python list?
...
If someone finds this question like me, here are my performance tests of proposed methods:
Python 2.7.8
In [1]: %timeit ([1]*1000000).insert(0, 0)
100 loops, best of 3: 4.62 ms per loop
In [2]: %timeit ([1]*1000000)[0:0] = [0]
100 loops, best of 3: 4.55 ms per loop
In [3]: %timeit [0]...
How do I print bold text in Python?
...inal import render
print render('%(BG_YELLOW)s%(RED)s%(BOLD)sHey this is a test%(NORMAL)s')
print render('%(BG_GREEN)s%(RED)s%(UNDERLINE)sAnother test%(NORMAL)s')
UPDATED:
I wrote a simple module named colors.py to make this a little more pythonic:
import colors
with colors.pretty_output(colors...
How to remove all line breaks from a string
...plest solution would be:
let str = '\t\n\r this \n \t \r is \r a \n test \t \r \n';
str.replace(/\s+/g, ' ').trim();
console.log(str); // logs: "this is a test"
.replace() with /\s+/g regexp is changing all groups of white-spaces characters to a single space in the whole string then we .tr...
How to list all installed packages and their versions in Python?
...
WOW: Just looked into documentation of latest version of pip and seems like they have added pip list: pip-installer.org/en/latest/usage.html#pip-list - so this is actually something that is coming already!
– jsalonen
Feb 9 '13 ...