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How do you print in a Go test using the “testing” package?
...spectively.
See more details here: http://golang.org/pkg/testing/#pkg-index
fmt.X print statements do work inside tests, but you will find their output is probably not on screen where you expect to find it and, hence, why you should use the logging methods in testing.
If, as in your case, you wan...
Is it safe to get values from a java.util.HashMap from multiple threads (no modification)?
...he only interesting part is how the HashMap reference is published.
For example, imagine you publish the map like this:
class SomeClass {
public static HashMap<Object, Object> MAP;
public synchronized static setMap(HashMap<Object, Object> m) {
MAP = m;
}
}
... and at ...
What makes a keychain item unique (in iOS)?
... think (but am not sure) that the implementation of keychains under Mac OS X raises the same question with the same answer.
...
What is the logic behind the “using” keyword in C++?
... shall not appear in the type-id.
Bjarne Stroustrup provides a practical example:
typedef void (*PFD)(double); // C style typedef to make `PFD` a pointer to a function returning void and accepting double
using PF = void (*)(double); // `using`-based equivalent of the typedef above
using P = [...
When do I need to use Begin / End Blocks and the Go keyword in SQL Server?
... where I need to use begin and end blocks in SQL Server?
Also, what exactly does the Go keyword do?
6 Answers
...
When and why will a compiler initialise memory to 0xCD, 0xDD, etc. on malloc/free/new/delete?
... compiler will sometimes initialize memory with certain patterns such as 0xCD and 0xDD . What I want to know is when and why this happens.
...
How to find Unused Amazon EC2 Security groups
...2 describe-security-groups --query 'SecurityGroups[*].GroupId' --output text | tr '\t' '\n'
Then get all security groups tied to an instance, then piped to sort then uniq:
aws ec2 describe-instances --query 'Reservations[*].Instances[*].SecurityGroups[*].GroupId' --output text | tr '\t' '\n' | sor...
How many socket connections can a web server handle?
...ve in the order of millions of simultaneous active TCP connections and by extension HTTP request(s). This tells you the maximum performance you can expect with the right platform with the right configuration.
Today, I was worried whether IIS with ASP.NET would support in the order of 100 concurrent ...
Java EE web development, where do I start and what skills do I need? [closed]
.... See also Java Platform, Enterprise Edition, History on Wikipedia.
What exactly do I need to learn?
I assume that you're already familiar with client side technologies like HTML, CSS and JS, so I won't go in detail with that. I also assume that you're already familiar with basic Java. Follow Orac...
text-overflow:ellipsis in Firefox 4? (and FF5)
The text-overflow:ellipsis; CSS property must be one of the few things that Microsoft has done right for the web.
5 Answe...