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Virtual Memory Usage from Java under Linux, too much memory used
... but it's largely meaningless, and usually based on looking at the wrong information. The usual phrasing is something like "Hello World on Java takes 10 megabytes! Why does it need that?" Well, here's a way to make Hello World on a 64-bit JVM claim to take over 4 gigabytes ... at least by one form o...
Is it expensive to use try-catch blocks even if an exception is never thrown?
...t do some optimizations on code in a try block that it would otherwise do. For example, Java will often re-arrange instructions in a method to make it run faster - but Java also needs to guarantee that if an exception is thrown, the method's execution is observed as though its statements, as written...
Why does GCC generate such radically different assembly for nearly the same C code?
...nd some very odd behaviour in GCC 4.6.1 . Let me show you the code first (for clarity I marked the differences):
3 Answers...
Can Objective-C switch on NSString?
...
Unfortunately they cannot. This is one of the best and most sought after utilizations of switch statements, so hopefully they hop on the (now) Java (and others) bandwagon!
If you are doing card names, perhaps assign each card ...
Why are unnamed namespaces used and what are their benefits?
...rstand the design. The project makes frequent use of unnamed namespaces. For example, something like this may occur in a class definition file:
...
How to quickly edit values in table in SQL Server Management Studio?
...tree on the left, select SQL Server Object Explorer. Set the option "Value for Edit Top Rows command" to 0. It'll now allow you to view and edit the entire table from the context menu.
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impr...
Converting a Java collection into a Scala collection
... This suggestion doesn't work where I want to keep the type information
– oxbow_lakes
Mar 24 '09 at 8:50
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How do you get a list of the names of all files present in a directory in Node.js?
...t fs = require('fs');
fs.readdir(testFolder, (err, files) => {
files.forEach(file => {
console.log(file);
});
});
fs.readdirSync
const testFolder = './tests/';
const fs = require('fs');
fs.readdirSync(testFolder).forEach(file => {
console.log(file);
});
The difference betwe...
How can I get a precise time, for example in milliseconds in Objective-C?
...to calculate millisecond time accuracy, you can do:
// Get a current time for where you want to start measuring from
NSDate *date = [NSDate date];
// do work...
// Find elapsed time and convert to milliseconds
// Use (-) modifier to conversion since receiver is earlier than now
double timePassed_...
Why would finding a type's initializer throw a NullReferenceException?
This has got me stumped. I was trying to optimize some tests for Noda Time, where we have some type initializer checking. I thought I'd find out whether a type has a type initializer (static constructor or static variables with initializers) before loading everything into a new AppDomain . To my ...