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What are all the common undefined behaviours that a C++ programmer should know about? [closed]
...een definitely initialized
Performing pointer arithmetic that yields a result outside the boundaries (either above or below) of an array.
Dereferencing the pointer at a location beyond the end of an array.
Converting pointers to objects of incompatible types
Using memcpy to copy overlapping buffers....
Are PHP Variables passed by value or by reference?
...
It's by value according to the PHP Documentation.
By default, function arguments are passed by value (so that if the value of the argument within the function is changed, it does not get changed outside of the function). To allow a function to modify its arguments, they must be pass...
onBitmapLoaded of Target object not called on first load
...
You can even store it in an ArrayList<Target> and it will work, just remember to clear that arraylist :-)
– Oliver Dixon
Feb 22 '16 at 17:32
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How do I move files in node.js?
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fs.rename(oldPath, newPath, callback)
Added in: v0.0.2
oldPath <String> | <Buffer>
newPath <String> | <Buffer>
callback <Function>
Asynchronous rename(2). No arguments other than a possible exception
are given to the completion callback.
...
JavaScript get window X/Y position for scroll
...llLeft) - (doc.clientLeft || 0);
var top = (window.pageYOffset || doc.scrollTop) - (doc.clientTop || 0);
That is:
It tests for window.pageXOffset first and uses that if it exists.
Otherwise, it uses document.documentElement.scrollLeft.
It then subtracts document.documentElement.clientLeft if it...
Include all existing fields and add new fields to document
...looks like the way to do it would be using something like IAggregateFluent<TResult>.AppendStage(new JsonPipelineStageDefinition<TInput, TOutput>("{ $addFields : { myField: 'myValue' }}")
– sboisse
Oct 29 '18 at 21:36
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Ruby optional parameters
... to methods. The closest you can get is to pass nil:
ldap_get(base_dn, filter, nil, X)
However, this will set the scope to nil, not LDAP::LDAP_SCOPE_SUBTREE.
What you can do is set the default value within your method:
def ldap_get(base_dn, filter, scope = nil, attrs = nil)
scope ||= LDAP::L...
MVC 5 Access Claims Identity User Data
...
Try this:
[Authorize]
public ActionResult SomeAction()
{
var identity = (ClaimsIdentity)User.Identity;
IEnumerable<Claim> claims = identity.Claims;
...
}
share
...
Enum ToString with user friendly strings
...
Then use this code to retrieve it:
public static string GetDescription<T>(this T enumerationValue)
where T : struct
{
Type type = enumerationValue.GetType();
if (!type.IsEnum)
{
throw new ArgumentException("EnumerationValue must be of Enum type", "enumerationValue")...
How to programmatically cause a core dump in C/C++
...tself if this is anything other than quick'n'dirty debug code).
#include <signal.h>
: : :
raise (SIGABRT);
Calling abort() will also cause a core dump, and you can even do this without terminating your process by calling fork() followed by abort() in the child only - see this answer for det...