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Regular Expression for alphanumeric and underscores
...r expressions, and probably a lot of other languages as well.
Breaking it down:
^ : start of string
[ : beginning of character group
a-z : any lowercase letter
A-Z : any uppercase letter
0-9 : any digit
_ : underscore
] : end of character group
* : zero or more of the given characters
$ : end of s...
JPA: unidirectional many-to-one and cascading delete
...the parent to the child (not just the opposite).
You'll therefore need to do this:
Either, change the unidirectional @ManyToOne relationship to a bi-directional @ManyToOne, or a unidirectional @OneToMany. You can then cascade REMOVE operations so that EntityManager.remove will remove the parent a...
How to close TCP and UDP ports via windows command line
Does somebody knows how to close a TCP or UDP socket for a single connection via windows command line?
17 Answers
...
OwinStartup not firing
...ithout requiring these direct references of the Microsoft.Owin stuff? How do we specifically provoke Katana to call Startup.Configuration(IAppBuilder)?
– Jason Kleban
Jan 13 '15 at 16:17
...
Why can't strings be mutable in Java and .NET?
...
@PRINCESSFLUFF This answer doesn't address strings specifically. That was the OPs question. It's so frustrating - this happens all the time on SO and with String immutability questions as well. The answer here talks about general benefits of immutabili...
How can I safely create a nested directory?
...com/questions/273192/#273208, will mask a failure to create the directory. Don't feel bad for voting down - you don't like the answer. It's what votes are for.
– Blair Conrad
Nov 7 '08 at 20:35
...
Why do == comparisons with Integer.valueOf(String) give different results for 127 and 128?
...st be, according to JLS 5.1.7. It may be cached outside of that range, but doesn't have to be (and often isn't).
– yshavit
Apr 22 '16 at 19:07
...
Why does += behave unexpectedly on lists?
... # whereas only b1 was changed
For immutable types (where you don't have an __iadd__) a += b and a = a + b are equivalent. This is what lets you use += on immutable types, which might seem a strange design decision until you consider that otherwise you couldn't use += on immutable types...
Is there a way to quickly capitalize the variable name in Eclipse
...
Windows
After you press Alt+Shift+R as mentioned by kostja, you can select the text you want to change, then
Ctrl+Shift+Y for lowercase, or
Ctrl+Shift+X for uppercase.
Mac OS
Cmd+Shift+Y lowercase
Cmd+Shift+X uppercase
...
Get name of property as a string
...berInfo from here: Retrieving Property name from lambda expression you can do something like this:
RemoteMgr.ExposeProperty(() => SomeClass.SomeProperty)
public class SomeClass
{
public static string SomeProperty
{
get { return "Foo"; }
}
}
public class RemoteMgr
{
publ...