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Detecting iOS / Android Operating system
...() {
var platform = ["Win32", "Android", "iOS"];
for (var i = 0; i < platform.length; i++) {
if (navigator.platform.indexOf(platform[i]) >- 1) {
return platform[i];
}
}
}
getPlatform();
...
How do you clear a stringstream variable?
...clearing the contents of a stringstream, using:
m.str("");
is correct, although using:
m.str(std::string());
is technically more efficient, because you avoid invoking the std::string constructor that takes const char*. But any compiler these days should be able to generate the same code in bot...
Calculating days between two dates with Java
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TimeUnit.DAYS.convert(diff, TimeUnit.MILLISECONDS)); <3
– Guihgo
Jan 3 '16 at 1:07
3
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Querying DynamoDB by date
...look in to find the data.
You can of course perform a scan operation to filter by the date value, however this would require a full table scan, so it is not ideal.
If you need to perform an indexed lookup of records by time across multiple primary keys, DynamoDB might not be the ideal service for ...
How to declare constant map
...st be
constant expressions, evaluatable by the compiler. For instance, 1<<3
is a constant expression, while math.Sin(math.Pi/4) is not because the
function call to math.Sin needs to happen at run time.
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Why does AuthorizeAttribute redirect to the login page for authentication and authorization failures
...w attribute with the same name (AuthorizeAttribute) in your website's default namespace (this is very important) then the compiler will automatically pick it up instead of MVC's standard one. Of course, you could always give the attribute a new name if you'd rather take that approach.
[AttributeUsa...
Why is my program slow when looping over exactly 8192 elements?
...trix of 512x512 much slower than transposing a matrix of 513x513?
Matrix multiplication: Small difference in matrix size, large difference in timings
But that's only because there's one other problem with the code.
Starting from the original loop:
for(i=1;i<SIZE-1;i++)
for(j=1;j<SIZE-...
Failure [INSTALL_FAILED_ALREADY_EXISTS] when I tried to update my application
...her adb install -r would remove first and then install or upgrade my app. Although adb's description is not very clear (-r: replace existing application), adb install -r does indeed upgrade your app and does not remove your app data. Therefore suitable to test upgrading your app (which is the inform...
In PHP what does it mean by a function being binary-safe?
...e, if PHP's strlen function worked like C standard library strlen, the result here would be wrong:
$str = "abc\x00abc";
echo strlen($str); //gives 7, not 3!
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Why does Date.parse give incorrect results?
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@RoyiNamir, it means that the results depend on what web browser (or other JavaScript implementation) is running your code.
– Samuel Edwin Ward
Mar 29 '13 at 14:58
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