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Troubleshooting “The use statement with non-compound name … has no effect”
...s (fully qualified namespace names containing namespace separator, such as Foo\Bar as opposed to global names that do not, such as FooBar), the leading backslash is unnecessary and not recommended, as import names must be fully qualified, and are not processed relative to the current namespace.
h...
What are the differences between “=” and “
...tree is built. Maybe related to function arguments, it makes sense that in foo(x = a ? b) we'd look for = before parsing rest of the expression.
– Moody_Mudskipper
Jan 10 at 10:34
...
Linux: compute a single hash for a given folder & contents?
... @RichardBronosky - Let us assume we have two files, A and B. A contains "foo" and B contains "bar was here". With your method, we would not be able to separate that from two files C and D, where C contains "foobar" and D contains " was here". By hashing each file individually and then hash all "fi...
LISTAGG in Oracle to return distinct values
... row_number() over (partition by col1, col2 order by col1) as rn
from foo
order by col1,col2
)
where rn = 1
group by col1;
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How to change the name of a Django app?
...tem itself doesn't care about the name. The column DEFAULT stores an OID ('foo_pkey_seq'::regclass), you can change the name of the sequence without breaking that - the OID stays the same.
– Konstantine Kalbazov
May 1 '15 at 14:07
...
Reuse Cucumber steps
...precated, use 'step' to call other steps instead:/path/to/step_definitions/foo_steps.rb:631:in `block in '
". See the cucumber wiki for details.
The gist of the change is that you should now use the step or steps methods.
When /^I make all my stuff shiny$/
step "I polish my first thing"
end
Whe...
What is the difference between children and childNodes in JavaScript?
...ample would be:
let el = document.createElement("div");
el.textContent = "foo";
el.childNodes.length === 1; // Contains a Text node child.
el.children.length === 0; // No Element children.
Most of the time, you want to use .children because generally you don't want to loop over Text or Comment...
C# version of java's synchronized keyword?
..., I don't like the implementation of MethodImpl as it locks this or typeof(Foo) - which is against best practice. The preferred option is to use your own locks:
private readonly object syncLock = new object();
public void SomeMethod() {
lock(syncLock) { /* code */ }
}
Note that for field-like...
Differences between action and actionListener
...xml with a custom implementation:
<exception-handlerfactory>
com.foo.myExceptionHandler
</exception-handlerfactory>
Instead of listening globally, a single bean can also listen to these events. The following is a proof of concept of this:
@ManagedBean
@RequestScoped
public class M...
__attribute__ - C/C++ - 清泛网 - 专注C/C++及内核技术
...例如，创建一个双字对齐的int对，可以这么写：
struct foo { int x[2] __attribute__ ((aligned (8))); }; 如上所述，你可以手动指定对齐的格式，同样，你也可以使用默认的对齐方式。如果aligned后面不紧跟一个指定的数字值，那么编译器...