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What are the differences between numpy arrays and matrices? Which one should I use?
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Or just np.linalg.matrix_power(mat, n)
– Eric
Feb 28 '17 at 11:16
I...
Android SDK installation doesn't find JDK
... Doesn't work for me on Windows 7 x64. I'm not joking. I set JAVA_HOME and I tried clicking back and next several times, but it's still not working. Neither does running SDK Manager.exe from the archive and I am positive I have JDK 7 installed (even ran the installer again and it told me i...
How to mock ConfigurationManager.AppSettings with moq
...is not a unit test. If you need to check the implementation, see @ zpbappi.com/testing-codes-with-configurationmanager-appsettings
– nkalfov
Jan 31 '18 at 15:23
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Suppressing “warning CS4014: Because this call is not awaited, execution of the current method conti
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Save ArrayList to SharedPreferences
...ray to stick around even if the user leaves the activity and then wants to come back at a later time, however I don't need the array available after the application has been closed completely. I save a lot of other objects this way by using the SharedPreferences but I can't figure out how to save ...
How can I prevent SQL injection in PHP?
...ction->prepare('SELECT * FROM employees WHERE name = ?');
$stmt->bind_param('s', $name); // 's' specifies the variable type => 'string'
$stmt->execute();
$result = $stmt->get_result();
while ($row = $result->fetch_assoc()) {
// Do something with $row
}
If you're connecting...
“unpacking” a tuple to call a matching function pointer
... I can't get this demo to work with smart pointers - whats wrong here? http://coliru.stacked-crooked.com/a/8ea8bcc878efc3cb
– Xeverous
Sep 7 '17 at 17:01
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What is copy-on-write?
... data):
raise NotImplementedError
class Value(BaseValue):
def __init__(self, data):
self.data = data
def read(self):
return self.data
def write(self, data):
pass
class ValueProxy(BaseValue):
def __init__(self, subject):
self.subject = subject...
Are there strongly-typed collections in Objective-C?
... 'Lightweight Generics' to Objective-C. In Objective-C, they will generate compiler warnings if there is a type mismatch.
NSArray<NSString*>* arr = @[@"str"];
NSString* string = [arr objectAtIndex:0];
NSNumber* number = [arr objectAtIndex:0]; // Warning: Incompatible pointer types initializi...