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What does LINQ return when the results are empty
...nto another query. This caused the second query to throw no matter what I cast it to because there was no value being fed into the second query.
– trevorc
Nov 30 '11 at 21:11
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How to declare global variables in Android?
I am creating an application which requires login. I created the main and the login activity.
17 Answers
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How to check if any flags of a flag combination are set?
...sEnum<T>(true);
foreach (T flag in Enum.GetValues(typeof(T)).Cast<T>())
{
if (value.IsFlagSet(flag))
yield return flag;
}
}
public static T SetFlags<T>(this T value, T flags, bool on) where T : struct
{
CheckI...
Meaning of 'const' last in a function declaration of a class?
... that is often broken and easily broken.
foobar& fbNonConst = const_cast<foobar&>(fb1);
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What is the maximum length of latitude and longitude? [closed]
... approximately 10cm precision, whilst only using 5 bytes of storage.
e.g. CAST(123.456789 as decimal(9,6)) as [LatOrLong]
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How do I create an empty array/matrix in NumPy?
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# Initialize your variable as an empty list first
In [32]: x=[]
# and now cast it as a numpy ndarray
In [33]: x=np.array(x)
The result will be:
In [34]: x
Out[34]: array([], dtype=float64)
Therefore you can directly initialize an np array as follows:
In [36]: x= np.array([], dtype=np.float64)...
How can I get the console logs from the iOS Simulator?
...ut, so you can see the logs mixed up with system logs.
Open the Terminal and type: tail -f /var/log/system.log
Then run the simulator.
EDIT:
This stopped working on Mavericks/Xcode 5. Now you can access the simulator logs in its own folder: ~/Library/Logs/iOS Simulator/<sim-version>/syste...
Convert a byte array to integer in Java and vice versa
...y. Before you performing & operation on byte with 0xFF (int), JVM will cast the byte to int with 1 extended or 0 extended according the the leading bit first. There's no unsigned byte in Java, bytes are always signed.
– Nier
Mar 24 '16 at 3:35
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Why is “import *” bad?
...f into your namespace (might shadow some other object from previous import and you won't know about it).
Because you don't know exactly what is imported and can't easily find from which module a certain thing was imported (readability).
Because you can't use cool tools like pyflakes to statically ...
IEnumerable to string [duplicate]
...Input
((IEnumerable<char>)RandomString(STRLEN)) (this is just an upcast)
Results
Concat: 0 ms
New: 2000 ms
StringBuilder: 2000 ms
Downcast: 0 ms
I ran this on an Intel i5 760 targeting .NET Framework 3.5.
sh...