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Why do we need tuples in Python (or any immutable data type)?
...has changed since you last took a reference to it rears its ugly head).
Example of optimization issue:
$ python -mtimeit '["fee", "fie", "fo", "fum"]'
1000000 loops, best of 3: 0.432 usec per loop
$ python -mtimeit '("fee", "fie", "fo", "fum")'
10000000 loops, best of 3: 0.0563 usec per loop
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JavaScript style for optional callbacks
...wder dodgy might be the wrong word, it's well defined but useless due to boxing and returning "object" 95% of the time.
– Raynos
Jul 22 '11 at 16:03
1
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C++ template constructor
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There is no way to explicitly specify the template arguments when calling a constructor template, so they have to be deduced through argument deduction. This is because if you say:
Foo<int> f = Foo<int>();
The <int> is the ...
IE10 renders in IE7 mode. How to force Standards mode?
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Internet Explorer makes the assumption that most webpages were written to target earlier versions of IE and looks at the doctype, meta tags and HTML to determine the best compatibility mode (sometimes incorrectly). Even with a HTML5 do...
Linq order by boolean
...s - which LINQ provider are you actually using?
Here's a LINQ to Objects example which does work:
using System;
using System.Linq;
public static class Test
{
public static void Main()
{
var data = new[]
{
new { x = false, y = "hello" },
new { x = tr...
What is the “assert” function?
...nly used during debugging to make the program fail more obviously if an unexpected condition occurs.
For example:
assert(length >= 0); // die if length is negative.
You can also add a more informative message to be displayed if it fails like so:
assert(length >= 0 && "Whoops, len...
How to insert newline in string literal?
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Well, simple options are:
string.Format:
string x = string.Format("first line{0}second line", Environment.NewLine);
String concatenation:
string x = "first line" + Environment.NewLine + "second line";
String interpolation (in C#6 and above):
string x = $"first line{Env...
static const vs #define
...c const vars than #define preprocessor? Or maybe it depends on the context?
11 Answers
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Ineligible Devices section appeared in Xcode 6.x.x
After installing Xcode 6 my devices moved to greyed-out section Ineligible Devices and I can't select them as deploy target:
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round() for float in C++
...ally better if you're going to do a lot of rounding; it's a bit more complex to implement though.
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