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PHP variables in anonymous functions
...tion() use(&$variable) {
$variable = "something";
});
Note that in order for you to be able to modify $variable and retrieve the modified value outside of the scope of the anonymous function, it must be referenced in the closure using &.
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How to quickly check if folder is empty (.NET)?
I have to check, if directory on disk is empty. It means, that it does not contain any folders/files. I know, that there is a simple method. We get array of FileSystemInfo's and check if count of elements equals to zero. Something like that:
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TransactionScope automatically escalating to MSDTC on some machines?
...project we're using TransactionScope's to ensure our data access layer performs it's actions in a transaction. We're aiming to not require the MSDTC service to be enabled on our end-user's machines.
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How do I disable log messages from the Requests library?
...to configure it to not log messages unless they are at least warnings:
import logging
logging.getLogger("requests").setLevel(logging.WARNING)
If you wish to apply this setting for the urllib3 library (typically used by requests) too, add the following:
logging.getLogger("urllib3").setLevel(logg...
Import a module from a relative path
How do I import a Python module given its relative path?
22 Answers
22
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Forward declaration of nested types/classes in C++
...
Thanks for the answer. In my case, they're not my nested classes. I was hoping to avoid a huge library header file dependency with a little forward reference. I wonder if C++11 fixed it?
– Marsh Ray
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How do you avoid over-populating the PATH Environment Variable in Windows?
...are the approaches that you use to manage the executables in your system. For example I have almost everything accessible through the command line, but now I come to the limit of the path string, so i can't add any more dir.
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What is the difference between IEqualityComparer and IEquatable?
...t;T> and IEquatable<T> should be used.
The MSDN documentation for both looks very similar.
5 Answers
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When should one use RxJava Observable and when simple Callback on Android?
I'm working on networking for my app. So I decided to try out Square's Retrofit . I see that they support simple Callback
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Calculate difference in keys contained in two Python dictionaries
...lf.set_past - self.intersect
def changed(self):
return set(o for o in self.intersect if self.past_dict[o] != self.current_dict[o])
def unchanged(self):
return set(o for o in self.intersect if self.past_dict[o] == self.current_dict[o])
Here is some sample output:
>>&...