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What are rvalues, lvalues, xvalues, glvalues, and prvalues?
...);
But also don't forget that named rvalue references are lvalues:
void foo(int&& t) {
// t is initialized with an rvalue expression
// but is actually an lvalue expression itself
}
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Rails Root directory path?
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For super correctness, you should use:
Rails.root.join('foo','bar')
which will allow your app to work on platforms where / is not the directory separator, should anyone try and run it on one.
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How to serve static files in Flask
...the root of your package, and then you can use url_for('static', filename='foo.bar') or directly link to your files with http://example.com/static/foo.bar.
EDIT: As suggested in the comments you could directly use the '/static/foo.bar' URL path BUT url_for() overhead (performance wise) is quite low...
Is the C# static constructor thread safe?
...is the demonstration:
static void Main(string[] args)
{
var obj = new Foo<object>();
var obj2 = new Foo<string>();
}
public class Foo<T>
{
static Foo()
{
System.Diagnostics.Debug.WriteLine(String.Format("Hit {0}", typeof(T).ToString()));
}
}
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Should I use `this` or `$scope`?
...her reason to help me make the choice: this is more readable -- when I see fooCtrl.bar in HTML, I immediately know where to find the definition of bar.
Updates: not long after switching to this solution, I started to miss $scope way that needs less typing
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HashMap with multiple values under the same key
...HashMap<>();
put(map, "first", "hello");
put(map, "first", "foo");
put(map, "bar", "foo");
put(map, "first", "hello");
map.forEach((s, strings) -> {
System.out.print(s + ": ");
System.out.println(strings.stream().collect(Collectors.joining(", ")));
...
Equivalent of varchar(max) in MySQL?
...w size, even if it's the only column in the table.
mysql> CREATE TABLE foo ( v VARCHAR(65534) );
ERROR 1118 (42000): Row size too large. The maximum row size for the used table type, not counting BLOBs, is 65535. This includes storage overhead, check the manual. You have to change some columns t...
Controlling maven final name of jar artifact
...work as stackoverflow.com/a/14490656/2294031. Whereas <jar.finalName>foo</jar.finalName> creates two jars: an executable jar including dependencies named foo-${project.version}.jar and a second jar only containing the project named ${project.name}-${project.version}.jar, <build><...
HTML in string resource?
...nd getString() will return your actual HTML. Like such:
<string name="foo"><![CDATA[Foo Bar <a href="foo?id=%s">baz</a> is cool]]></string>
Now when you perform a getString(R.string.foo) the string will be HTML. If you need to render the HTML (with the link as shown...
Proper way to use **kwargs in Python
...
While most answers are saying that, e.g.,
def f(**kwargs):
foo = kwargs.pop('foo')
bar = kwargs.pop('bar')
...etc...
is "the same as"
def f(foo=None, bar=None, **kwargs):
...etc...
this is not true. In the latter case, f can be called as f(23, 42), while the former ...