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Why do we need the “event” keyword while defining events?
...r more on events (and delegates) read my article on this topic. (At some point I need to update this for C# 4, which changes field-like events very slightly. The gist of it is still correct though.)
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Change auto increment starting number?
...ORK;
-- You may also need to add other mandatory columns and values
INSERT INTO t (id) VALUES (42);
ROLLBACK;
In this way, even if you're rolling back the transaction, MySQL will keep the auto-increment value, and the change will be applied instantly.
You can verify this by issuing a SHOW CREATE ...
Can I pass parameters by reference in Java?
...se, as shown by the following:
Object o = "Hello";
mutate(o)
System.out.println(o);
private void mutate(Object o) { o = "Goodbye"; } //NOT THE SAME o!
Will print Hello to the console. The options if you wanted the above code to print Goodbye are to use an explicit reference as follows:
AtomicRe...
Is there an SQLite equivalent to MySQL's DESCRIBE [table]?
...nce it works through querying instead of being dependent on a command line interface. +1 from me.
– Akoi Meexx
Sep 2 '12 at 20:37
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How to find out the number of CPUs using python
...perthreaded cpus, which may not be what you want if you are scheduling cpu-intensive tasks.
– Christopher Barber
Jun 7 '19 at 15:21
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How is it possible to declare nothing inside main() in C++ and yet have a working application after
In an interview I was confronted with a question such as this:
6 Answers
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Is there a difference between foo(void) and foo() in C++ or C?
...aking no arguments"
By writing foo(void), therefore, we achieve the same interpretation across both languages and make our headers multilingual (though we usually need to do some more things to the headers to make them truly cross-language; namely, wrap them in an extern "C" if we're compiling C++...
get keys of json-object in JavaScript [duplicate]
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I am trying to convert rows from DB to JSON. I am getting numerical index along with actual column names as keys. Why I am getting numerical index?
– Nguai al
Jul 24 at 16:41
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Catching java.lang.OutOfMemoryError?
...an that the JVM is out of memory in the catch block:
private static final int MEGABYTE = (1024*1024);
public static void runOutOfMemory() {
MemoryMXBean memoryBean = ManagementFactory.getMemoryMXBean();
for (int i=1; i <= 100; i++) {
try {
byte[] bytes = new byte[MEGA...
Where does Console.WriteLine go in ASP.NET?
...J2EE application (like one running in WebSphere), when I use System.out.println() , my text goes to standard out, which is mapped to a file by the WebSphere admin console.
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