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@RequestParam vs @PathVariable
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@PathVariable is to obtain some placeholder from the URI (Spring call it an URI Template)
— see Spring Reference Chapter 16.3.2.2 URI Template Patterns
@RequestParam is to obtain a parameter from the URI as well — see Spring Reference Chapter 16.3.3.3 Binding reque...
Run an exe from C# code
I have an exe file reference in my C# project. How do I invoke that exe from my code?
5 Answers
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How can i tell if an object has a key value observer attached
...lly, expect the observer's state to go stale as it doesn't receive updates from the formerly-observed object.
If you're doing this in the observing object's class, simply remember which objects you're observing (or, if you only ever observe one object, whether you're observing it). This is assuming...
Running bash script from within python
...cify the full path to it e.g., if it is in the current working directory:
from subprocess import call
rc = call("./sleep.sh")
If the script has no shebang then you need to specify shell=True:
rc = call("./sleep.sh", shell=True)
If the script has no executable permissions and you can't change ...
What is an existential type?
...ytecode type is, but it doesn't need to; all it does is relay the bytecode from VirtualMachine.compile to VirtualMachine.run.
Java type wildcards (ex: List<?>) are a very limited form of existential types.
Update: Forgot to mention that you can sort of simulate existential types with univers...
What are inline namespaces for?
...le, consider the STL implementation of vector. If we had inline namespaces from the beginning of C++, then in C++98 the header <vector> might have looked like this:
namespace std {
#if __cplusplus < 1997L // pre-standard C++
inline
#endif
namespace pre_cxx_1997 {
template...
“Missing compiler required member” error being thrown multiple times with almost no changes to code
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It actually turned out that I had a bad reference from an assembly that I was no longer using (Azure). I don't think the Azure assembly was compiled against .Net 2.0 but removing it fixed the issue. I'm not sure why this randomly came into being as I haven't touched anything...
What are the dangers when creating a thread with a stack size of 50x the default?
... @Voo The 1st run took as much time as the 100th run of any test for me. From my experience, this Java JIT thing does not apply to .NET at all. The only "warm up" that .NET does is loading classes and assemblies when used for the first time.
– Vercas
Jun 14 '...
When should use Readonly and Get only properties
...Fuel = a; // Does not compile
f.FillFuelTank(10); // Value is changed from the method's code
}
Setting the private field of your class as readonly allows you to set the field value only once (using an inline assignment or in the class constructor).
You will not be able to change it later.
pu...
The 'json' native gem requires installed build tools
...alled build tools........."). Any other suggestions? Do you need more info from me?
– sridhar249
Nov 15 '11 at 17:24
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