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Asking the user for input until they give a valid response
...e with a RuntimeError: maximum recursion depth exceeded. You may think "no fool would make 1000 mistakes in a row", but you're underestimating the ingenuity of fools!
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Why shouldn't all functions be async by default?
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@talkol How is await FooAsync() simpler than Foo()? And instead of small domino effect some of the time, you have huge domino effect all the time and you call that an improvement?
– svick
Aug 28 '13 at 23:52...
Pointers vs. values in parameters and return values
...to create your items might force pointers on you, e.g. you have to call NewFoo() *Foo rather than let Go initialize with the zero value.
The desired lifetimes of the items might not all be the same. The whole slice is freed at once; if 99% of the items are no longer useful but you have pointers to t...
Java 8 Iterable.forEach() vs foreach loop
...ject prev = null;
for(Object curr : list)
{
if( prev != null )
foo(prev, curr);
prev = curr;
}
Can't handle checked exceptions. Lambdas aren't actually forbidden from throwing checked exceptions, but common functional interfaces like Consumer don't declare any. Therefore, any code...
How should a model be structured in MVC? [closed]
...b = new Database($conn);
$model = new User($db);
$model->CheckUsername('foo');
Also, in PHP, you rarely need to catch/rethrow exceptions because the backtrace is preserved, especially in a case like your example. Just let the exception be thrown and catch it in the controller instead.
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Why does base64 encoding require padding if the input length is not divisible by 3?
... used. 1%3=1.)
BASE64("fo") = "Zm8=" (Two bytes. 2%3=2.)
BASE64("foo") = "Zm9v" (Three bytes. 3%3=0.)
BASE64("foob") = "Zm9vYg==" (Four bytes. 4%3=1.)
BASE64("fooba") = "Zm9vYmE=" (Five bytes. 5%3=2.)
BASE64("foobar") = "Zm9vYmFy" (Six bytes. 6%3=0.)
Here's an encoder t...
How do you clear the SQL Server transaction log?
...+ REPLACE(CONVERT(CHAR(8), GETDATE(), 108),':','')
+ '.trn';
BACKUP LOG foo TO DISK = @path WITH INIT, COMPRESSION;
Note that \\backup_share\ should be on a different machine that represents a different underlying storage device. Backing these up to the same machine (or to a different machine t...
What does 'super' do in Python?
...y you add another class to your object, and want to inject a class between Foo and Bar (for testing or some other reason):
class InjectMe(SomeBaseClass):
def __init__(self):
print('InjectMe.__init__(self) called')
super(InjectMe, self).__init__()
class UnsuperInjector(UnsuperCh...
In Java, what is the best way to determine the size of an object?
...and Serviceability Agent (SA) heavily to decoder the actual object layout, footprint, and references. This makes JOL much more accurate than other tools relying on heap dumps, specification assumptions, etc.
To get the sizes of primitives, references and array elements, use VMSupport.vmDetails(). ...
Do asynchronous operations in ASP.NET MVC use a thread from ThreadPool on .NET 4
...m you use worker threads. Well actually EF is lazy so when you do _context.Foo you are actually not executing anything. You are just building an expression tree. Be extremely careful with this. The query execution is deferred only when you start enumerating over the resultset. And if this happens in...