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Explain the use of a bit vector for determining if all characters are unique
...d plus it can store more flags.
For future reference: bit vector is also known as bitSet or bitArray. Here are some links to this data structure for different languages/platforms:
CPP: BitSet
Java: BitSet
C#: BitVector32 and BitArray
...
NodeJS / Express: what is “app.use”?
...t has a middleware stack that can be customized in app.configure()(this is now deprecated in version 4.x).
To setup your middleware, you can invoke app.use(<specific_middleware_layer_here>) for every middleware layer that you want to add (it can be generic to all paths, or triggered only on ...
#define macro for debug printing in C?
...() in the example — to handle things like 'stderr'. It requires you to know how to write varargs functions, but that isn't hard:
#include <stdarg.h>
#include <stdio.h>
void dbg_printf(const char *fmt, ...)
{
va_list args;
va_start(args, fmt);
vfprintf(stderr, fmt, args);...
Measure execution time for a Java method [duplicate]
...tTime);
In Java 8 (output format is ISO-8601):
Instant start = Instant.now();
Thread.sleep(63553);
Instant end = Instant.now();
System.out.println(Duration.between(start, end)); // prints PT1M3.553S
Guava Stopwatch:
Stopwatch stopwatch = Stopwatch.createStarted();
myCall();
stopwatch.stop(); ...
How to unit test an object with database queries
...r
{
public Foo[] GetAllFoos() {
return Foo.GetAll();
}
}
Now in your unit test, you create a mock of FooDataProvider, which allows you to call the method GetAllFoos without having to actually hit the database.
class BarTests
{
public TestGetAllFoos() {
// here we set u...
C# binary literals
...
@D.Singh I see it on the C# 7 list now. github.com/dotnet/roslyn/issues/2136
– Danation
Jul 24 '15 at 20:03
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Save icon: Still a floppy disk? [closed]
...once people start forgetting what they look like (or never knew). The icon nowadays represents the concept of saving more than it represents floppy disks anyway.
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How to use NSURLConnection to connect with SSL for an untrusted cert?
...
These methods are now considered deprecated as of iOS 5.0 and Mac OS X 10.6. The -(void)connection:(NSURLConnection *)connection willSendRequestForAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge method should be used instead....
Error: No default engine was specified and no extension was provided
...t get my pages displaying, I looked up why and came on to info on express. Now I followed info on the express 4.2 page, and ran into the error above which you helped with. Now I got ejs and it still does not seem to be all I need. Can you please give me a flow of how this ought to work please?
...
Google Chrome redirecting localhost to https
... very bottom of a page is QUERY domain textbox - verify that localhost is known to the browser. If it says "Not found" then this is not the answer you are looking for.
If it is, DELETE the localhost domain using the textbox above
Your site should now work using plain old HTTP
This is not a permane...