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Best way to serialize an NSData into a hexadeximal string
.... I profiled this with a 2MB file on my iPhone 5. Time comparison was 0.05 vs 12 seconds. Memory footprint is negligible with this method while the other method grew the heap to 70MBs!
- (NSString *) hexString
{
NSUInteger bytesCount = self.length;
if (bytesCount) {
const char *hexC...
Difference between `npm start` & `node app.js`, when starting app?
...
The documentation has been updated. My answer has substantial changes vs the accepted answer: I wanted to reflect documentation is up-to-date, and accepted answer has a few broken links.
Also, I didn't understand when the accepted answer said "it defaults to node server.js". I think the docume...
What is the convention for word separator in Java package names?
...me and seems more readable for a two word package name like bigdataSource (vs "bigdatasource"). Unless there's some reason camelCase is a bad idea for packages that I'm unaware of, that seems fine.
– Manius
Jun 12 '19 at 16:31
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tomcat - CATALINA_BASE and CATALINA_HOME variables
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CATALINA_HOME vs CATALINA_BASE
If you're running multiple instances, then you need both variables, otherwise only CATALINA_HOME.
In other words: CATALINA_HOME is required and CATALINA_BASE is optional.
CATALINA_HOME represents the root ...
How can I copy the output of a command directly into my clipboard?
... also define alias "cs=xclip -selection clipboard" and alias "vs=xclip -o -selection clipboard" to make copying/pasting from system clipboard easier
– Yibo Yang
Jan 6 '16 at 19:20
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How to lazy load images in ListView in Android
...as an alternative. The two big differences I see are 1) in memory caching vs SD card and 2) the use of AsyncTasks instead of a thread pool. android-developers.blogspot.com/2010/07/…
– Richard
Oct 29 '10 at 20:39
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Using a dispatch_once singleton model in Swift
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community wiki
6 revs, 2 users 99%David Berry
1
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Storing C++ template function definitions in a .CPP file
... syntax is (as did I) for explicit template specialisation (or at least in VS2008), its the following...
In your .h file...
template<typename T>
class foo
{
public:
void bar(const T &t);
};
And in your .cpp file
template <class T>
void foo<T>::bar(const T &t)
{ }
...
Best way to test exceptions with Assert to ensure they will be thrown
... when debugging unit tests which throw exceptions, you may want to prevent VS from breaking on the exception.
Edit
Just to give an example of Matthew's comment below, the return of the generic Assert.Throws and Assert.Catch is the exception with the type of the exception, which you can then exami...
How can I do string interpolation in JavaScript?
...ne gave 7312 ns for "The cow says moo, moo, moo!" using Crockford's method vs 111 ns for a precompiled function that pulls the variables out of the passed object and concatenates them with the constant parts of the template string. This was Chrome 21.
– George
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