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What is the easiest way to duplicate an activerecord record?
...the same as the original task. Using Task.new, you will have to explicitly call save, so if you want it saved automatically, change Task.new to Task.create.
Peace.
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GDB corrupted stack frame - How to debug?
...of SEGV, with a bogus (very small) PC address, 99% of the time it's due to calling through a bogus function pointer. Note that virtual calls in C++ are implemented via function pointers, so any problem with a virtual call can manifest in the same way.
An indirect call instruction just pushes the P...
In pure functional languages, is there an algorithm to get the inverse function?
...
In some cases, yes! There's a beautiful paper called Bidirectionalization for Free! which discusses a few cases -- when your function is sufficiently polymorphic -- where it is possible, completely automatically to derive an inverse function. (It also discusses what make...
How to copy Docker images from one host to another without using a repository
...ad < my-image.tar.gz is sufficient. The image gets decompressed automatically for gzip, bzip2, and xz.
– Flux
Apr 4 '18 at 2:41
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TypeError: Illegal Invocation on console.log.apply
...e console, not window.
console.info("stuff")
stuff
undefined
console.info.call(this, "stuff")
TypeError: Illegal invocation
console.info.call(console, "stuff")
stuff
undefined
This behavior is expected.
https://bugs.chromium.org/p/chromium/issues/detail?id=48662
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Should I avoid the use of set(Preferred|Maximum|Minimum)Size methods in Java Swing?
...100 to you I think there is no problem with overriding these methods, even calling them (but of course this would mean you have a custom component thus overriding would be better)
– David Kroukamp
Oct 4 '12 at 12:43
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PHP Foreach Pass by Reference: Last Element Duplicating? (Bug?)
...ference to some value which is also being used by $arr[2]. So each foreach call in the second loop, which does not call by reference, replaces that value, and thus $arr[2], with the new value.
So loop 1, the value and $arr[2] become $arr[0], which is 'foo'.
Loop 2, the value and $arr[2] become $arr[...
Is is possible to check if an object is already attached to a data context in Entity Framework?
... if (attach)
context.AttachTo(entitySetName, entity);
}
You can call it as follows:
User user = new User() { Id = 1 };
II.AttachToOrGet<Users>("Users", ref user);
This works very nicely because it's just like context.AttachTo(...) except you can use the ID trick I cited above eac...
How do you create a hidden div that doesn't create a line break or horizontal space?
...global HTML attribute hidden which is available since HTML5.1 which is basically the same as saying display: none although straight from HTML. However any use of the display property overrides the behavior of the hidden global attribute.
– Marius Mucenicu
Aug 2...
iOS: Modal ViewController with transparent background
... a sub view.
Here is a very good discussion. Look at the comments specifically. Not only the answer.
Modal View
If I were you I wouldn't do it. I would add a sub view and do it. It seems to give me a better control over things.
EDIT:
As mentioned by Paul Linsay, since iOS 8 all that's needed ...