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Inject errors into already validated form?
...collision I'd like to send the form back with an error on it, but I won't know until I actually try to do the database insert. (In theory the validator could check the database, but that smells and is race-prone.)
– Weeble
May 19 '10 at 15:53
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What is the purpose of std::make_pair vs the constructor of std::pair?
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@Tor Yeah, I know how to use both of them, I was just curious if there was a reason for std::make_pair. Apparently it is just for convenience.
– user542687
Feb 14 '12 at 1:56
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Including another class in SCSS
...ommon
properties
Extend your class (.my-base-class) with this placeholder.
Now you can extend %base-class in any of your classes (e.g. .my-class).
%base-class {
width: 80%;
margin-left: 10%;
margin-right: 10%;
}
.my-base-class {
@extend %base-class;
}
.my-class {
@extend %base-cl...
How to replace a character by a newline in Vim
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wow----this is amazing. I used to do sed -n l till now. Good to know that the same can be achieved with Ctrl-v in vim.
– arpit
May 15 at 4:35
add a com...
Limit text length to n lines using CSS
... @markzzz - thanks for that, no idea how I missed it :-) I revised it now, but it's not something I would use in production without a bit more work. But at least the basic idea is laid out.
– asimovwasright
Oct 13 '17 at 8:24
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JPA EntityManager: Why use persist() over merge()?
... }
// Set 3 to value
attachedEntity.setValue(3);
// Really, now both are the same object. Prints 3
System.out.println(newEntity.getValue());
// Modify the un attached object has no effect to the entity manager
// nor to the other objects
nonAttachedEntity.setValue(42)...
Why do x86-64 systems have only a 48 bit virtual address space?
...al answer is that AMD was just being cheap and hoped nobody would care for now, but I don't have references to cite.
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How do you install ssh-copy-id on a Mac?
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ssh-copy-id is installed on macOS by default now.
$ sw_vers
ProductName: Mac OS X
ProductVersion: 10.12.4
$ which ssh-copy-id
/usr/bin/ssh-copy-id
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Can we write our own iterator in Java?
...ok at a more complete implementation at my personal practice google code.
Now, to get the effects of what you need I think you need to plug a concept of a filter in the Iterator... Since the iterator depends on the next values, it would be hard to return true on hasNext(), and then filter the next(...
Linq: GroupBy, Sum and Count
...hy I need it to be a string. But i could change quantity to int.. I'll see now if this may also help for my website. I'll let you know.
– ThdK
May 13 '13 at 13:14
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