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Is null an Object?
...ethod invocation on a null results in a NullPointerException.
And this is what the Java Language Specification has to say on this topic:
There is also a special null type, the
type of the expression null, which has
no name. Because the null type has no
name, it is impossible to declare a
...
How to install Xcode Command Line Tools
...-install" you can follow that with "softwareupdate -l" which will show you what is about to be installed and "sudo softwareupdate -i -a" to go ahead and install what you have selected.
– Queenvictoria
Jan 26 '14 at 19:14
...
Equation (expression) parser with precedence?
...as a lower (or equal to) precedence. In the context of the example, here's what you want to do:
Look at: 1 + 2, don't do anything.
Now look at 1 + 2 * 3, still don't do anything.
Now look at 1 + 2 * 3 + 4, now you know that 2 * 3 has to to be evaluated because the next operator has lower preceden...
Mac OS X - EnvironmentError: mysql_config not found
...
I had been debugging this problem forever - 3 hours 17 mins. What particularly annoyed me was that I already had sql installed on my system through prior uni work but pip/pip3 wasn't recognising it. These threads above and many other I scoured the internet for were helpful in eluminati...
Understanding exactly when a data.table is a reference to (vs a copy of) another data.table
...erations seem to 'break' the reference, and I'd like to understand exactly what's happening.
2 Answers
...
In Firebase, is there a way to get the number of children of a node without loading all the node dat
.... Haven't had time to look into it myself, so will wait a few days to see what people think...
– josh
Jan 26 '16 at 19:08
1
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Use of Initializers vs Constructors in Java
...in constructors, providing the default values. This makes is pretty clear what is being done:
class MyClass {
private final int counter;
public MyClass() {
this(0);
}
public MyClass(final int counter) {
this.counter = counter;
}
}
...
When to use std::size_t?
...t does not have the full range of size_t. It just is the signed variant of whatever size_t would translate into. This means, that the full range of the memory is not usable with ssize_t and integer overflows could happen when depending on variables of type size_t.
– Thomas
...
android get real path by Uri.getPath()
...
Its exactly what I've looked for, but couldn't find. Thanks.
– davs
May 7 '10 at 19:04
8
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Entity Framework with NOLOCK
...t for everything within the scope of the transaction.
If that sounds like what you want, here's how you could go about doing it...
//declare the transaction options
var transactionOptions = new System.Transactions.TransactionOptions();
//set it to read uncommited
transactionOptions.IsolationLevel ...