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Delete a single record from Entity Framework?
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@IanWarburton The 2nd and 3rd line (Attach and Remove)
– Simon Belanger
May 25 '16 at 11:22
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Extract traceback info from an exception object
...__ attribute that contains the traceback. This attribute is also writable, and can be conveniently set using the with_traceback method of exceptions:
raise Exception("foo occurred").with_traceback(tracebackobj)
These features are minimally described as part of the raise documentation.
All credi...
Instantiating object of type parameter
...ngBuilder::new);
Alternatively, you can provide a Class<T> object, and then use reflection.
class MyClass<T> {
private final Constructor<? extends T> ctor;
private T field;
MyClass(Class<? extends T> impl) throws NoSuchMethodException {
this.ctor = impl.getCo...
Actual meaning of 'shell=True' in subprocess
...y cmd.exe.
So invoking the shell invokes a program of the user's choosing and is platform-dependent. Generally speaking, avoid invocations via the shell.
Invoking via the shell does allow you to expand environment variables and file globs according to the shell's usual mechanism. On POSIX system...
How do I catch an Ajax query post error?
I would like to catch the error and show the appropriate message if the Ajax request fails.
8 Answers
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error: request for member '..' in '..' which is of non-class type
I have a class with two constructors, one that takes no arguments and one that takes one argument.
9 Answers
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Verify version of rabbitmq
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sudo rabbitmqctl status
and look for line that looks like that:
{rabbit,"RabbitMQ","2.6.1"},
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Can you pass parameters to an AngularJS controller on creation?
...al Answer:
I answered this to
Yes you absolutely can do so using ng-init and a simple init function.
Here is the example of it on plunker
HTML
<!DOCTYPE html>
<html ng-app="angularjs-starter">
<head lang="en">
<script src="//ajax.googleapis.com/ajax/libs/angularjs/1....
How to serialize a lambda?
...unnable & Serializable)() -> System.out.println("Serializable!");
And the lambda automagically becomes serializable.
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Datatable vs Dataset
...able objects, you can return multiple distinct sets of data into a single, and therefore more manageable, object.
Performance-wise, you're more likely to get inefficiency from unoptimized queries than from the "wrong" choice of .NET construct. At least, that's been my experience.
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