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C++ new int[0] — will it allocate memory?
... pointer returned as a request for zero size is undefined.
Also
Even if the size of the space requested [by new] is zero, the request can fail.
That means you can do it, but you can not legally (in a well defined manner across all platforms) dereference the memory that you get - you can only...
iOS: Modal ViewController with transparent background
...ing a sub view.
Here is a very good discussion. Look at the comments specifically. Not only the answer.
Modal View
If I were you I wouldn't do it. I would add a sub view and do it. It seems to give me a better control over things.
EDIT:
As mentioned by Paul Linsay, since iOS 8 all that's need...
Resize image proportionally with MaxHeight and MaxWidth constraints
...
I just thinking about a case, i don't sure if it possible or not that after multiply with ratio the width Or height might still larger than max width or max height.
– Sarawut Positwinyu
Jun 28 '11 at 10:37
...
A good solution for await in try/catch/finally?
...move the logic outside of the catch block and rethrow the exception after, if needed, by using ExceptionDispatchInfo.
static async Task f()
{
ExceptionDispatchInfo capturedException = null;
try
{
await TaskThatFails();
}
catch (MyException ex)
{
capturedExcep...
Is it possible to make the -init method private in Objective-C?
...at any time.
What you can do is throw an NSInternalInconsistencyException if your -init method is invoked:
- (id)init {
[self release];
@throw [NSException exceptionWithName:NSInternalInconsistencyException
reason:@"-init is not a valid initializer for th...
How do you reindex an array in PHP?
...
If you want to re-index starting to zero, simply do the following:
$iZero = array_values($arr);
If you need it to start at one, then use the following:
$iOne = array_combine(range(1, count($arr)), array_values($arr));
H...
How to match “anything up until this sequence of characters” in a regular expression?
...
You didn't specify which flavor of regex you're using, but this will
work in any of the most popular ones that can be considered "complete".
/.+?(?=abc)/
How it works
The .+? part is the un-greedy version of .+ (one or more ...
What is the use of Enumerable.Zip extension method in Linq?
...ip operator merges the corresponding elements of two sequences using a specified selector function.
var letters= new string[] { "A", "B", "C", "D", "E" };
var numbers= new int[] { 1, 2, 3 };
var q = letters.Zip(numbers, (l, n) => l + n.ToString());
foreach (var s in q)
Console.WriteLine(s);
...
Retrieving a List from a java.util.stream.Stream in Java 8
...is that the code as it stands (forEach(targetLongList::add)) would be racy if the stream was parallel. Even then, it will not achieve the effect intended, as forEach is explicitly nondeterministic—even in a sequential stream the order of element processing is not guaranteed. You would have to use ...
Converting unix timestamp string to readable date
... datetime module:
from datetime import datetime
ts = int("1284101485")
# if you encounter a "year is out of range" error the timestamp
# may be in milliseconds, try `ts /= 1000` in that case
print(datetime.utcfromtimestamp(ts).strftime('%Y-%m-%d %H:%M:%S'))
...