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How to generate an entity-relationship (ER) diagram using Oracle SQL Developer
... left-hand side.
Click on the «Browser» tab, expand the design (probably called Untitled_1), right-click «Relational Models» and select «New Relational Model».
Right click on the newly created relational model (probably Relational_1) and select «Show».
Then just drag the tables you want (fro...
Why is lock(this) {…} bad?
... string oldName = person.Name;
person.Name = "Nancy Callahan";
Console.WriteLine("Name changed from '{0}' to '{1}'.", oldName, person.Name);
}
else Monitor.Exit(person.Name);
}
}
Console output
'this' person is locked!
Nancy Drew is 16 years ...
Why would a static nested interface be used in Java?
...c keyword in the above example is redundant (a nested interface is automatically "static") and can be removed with no effect on semantics; I would recommend it be removed. The same goes for "public" on interface methods and "public final" on interface fields - the modifiers are redundant and just ad...
Why catch and rethrow an exception in C#?
... way that the code in the article does it is evil. throw ex will reset the call stack in the exception to the point where this throw statement is; losing the information about where the exception actually was created.
Second, if you just catch and re-throw like that, I see no added value, the code ...
install / uninstall APKs programmatically (PackageManager vs Intents)
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Starting with API 25, calling ACTION_INSTALL_PACKAGE will require the signature level REQUEST_INSTALL_PACKAGES permission. Likewise, starting with API 28 (Android P), calling ACTION_UNINSTALL_PACKAGE will require the non-dangerous REQUEST_DELETE_P...
How to mock an import
... for clarity, you should edit the answer to actually import mock and then call mock.Mock()
– nmz787
Mar 3 at 1:26
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show 1 more comment
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How to respond with HTTP 400 error in a Spring MVC @ResponseBody method returning String?
...ppingJackson2HttpMessageConverter to handle the JSON serialization automatically (it is added by default if you add Jackson to the classpath and add either @EnableWebMvc or <mvc:annotation-driven /> to your config, see the reference docs):
@RequestMapping(value = "/matches/{matchId}", produce...
How to limit the amount of concurrent async I/O operations?
...reyCloud: Parallel.ForEach works with synchronous code. This allows you to call asynchronous code.
– Josh Noe
Jun 6 '16 at 2:46
2
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C pointer to array/array of pointers disambiguation
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I don't know if it has an official name, but I call it the Right-Left Thingy(TM).
Start at the variable, then go right, and left, and right...and so on.
int* arr1[8];
arr1 is an array of 8 pointers to integers.
int (*arr2)[8];
arr2 is a pointer (the parenthesis blo...
Undefined, unspecified and implementation-defined behavior
...s coming from other languages (other languages try to hide it better). Basically, it is possible to write C++ programs that do not behave in a predictable way, even though many C++ compilers will not report any errors in the program!
Let's look at a classic example:
#include <iostream>
int m...