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Check if object value exists within a Javascript array of objects and if not add a new object to arr
...some(user => user.name = newUser.name);
if(userExists) {
return new Error({error:'User exists'})
}
users.push(newUser)
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When and why will a compiler initialise memory to 0xCD, 0xDD, etc. on malloc/free/new/delete?
...e Visual Studio would spot this problem and issue a warning):
...
bool error; // uninitialised value
if(something)
{
error = true;
}
return error;
If Visual Studio didn't preinitialise variables to a known value, then this bug could potentially be hard to find. With preinitia...
How do I detect a click outside an element?
... jQuery one).
Polyfills can be found here: Element.closest()
Edit – 2020-05-21
In the case where you want the user to be able to click-and-drag inside the element, then release the mouse outside the element, without closing the element:
...
let lastMouseDownX = 0;
let lastMouseDo...
Could not establish trust relationship for SSL/TLS secure channel — SOAP
...CertificateValidationCallback =
((sender, certificate, chain, sslPolicyErrors) => true);
// trust sender
System.Net.ServicePointManager.ServerCertificateValidationCallback
= ((sender, cert, chain, errors) => cert.Subject.Contains("YourServerName"));
// validate cert by ca...
Equals(=) vs. LIKE
...2 the database will do nothing. docs.oracle.com/cd/A64702_01/doc/server.805/a58236/c_char.htm
– xild
Nov 13 '14 at 10:20
...
Can you configure log4net in code instead of using a config file?
...t;DummyTypeForLog4Net>
let logger = LogManager.GetLogger(aType)
logger.Error(new Exception("exception test"))
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Is it possible to make abstract classes in Python?
...t recent call last):
File "<stdin>", line 1, in <module>
TypeError: Can't instantiate abstract class Abstract with abstract methods foo
>>> class StillAbstract(Abstract):
... pass
...
>>> StillAbstract()
Traceback (most recent call last):
File "<stdin>", ...
How to test if string exists in file with Bash?
...put. Exit immediately with zero status if any match is found, even if an error was detected. Also see the -s or --no-messages option.
Error handling
As rightfully pointed out in the comments, the above approach silently treats error cases as if the string was found. If you want to handle errors ...
How does the @property decorator work in Python?
... return self
if self.fget is None:
raise AttributeError("unreadable attribute")
return self.fget(obj)
def __set__(self, obj, value):
if self.fset is None:
raise AttributeError("can't set attribute")
self.fset(obj, value)
def __de...
Windows threading: _beginthread vs _beginthreadex vs CreateThread C++
...DWORD)thrdaddr))
== (uintptr_t)0 )
{
err = GetLastError();
goto error_return;
}
The rest of _beginthreadex initializes per-thread data structure for CRT.
The advantage of using _beginthread* is that your CRT calls from thread will work correctly.
...