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Creating a singleton in Python
... http://googletesting.blogspot.com/2008/08/root-cause-of-singletons.html:
Now, there is one kind of Singleton which is OK. That is a singleton where all of the reachable objects are immutable. If all objects are immutable than Singleton has no global state, as everything is constant. But it is so e...
How to define “type disjunction” (union types)?
...ntation :-) ... but I'm still feeling like this is something convoluted... now just because it's not yet available straight away from Scala. As Miles says: "Now we just need to pester Martin and Adriaan to make it directly accessible."
– Richard Gomes
Mar 29 '1...
How do I replace whitespaces with underscore?
...the heck, I meant to upvote this, but for some reason it got downvoted and now my vote is locked in. Sorry Jarret.
– Dave Liu
May 3 '19 at 18:25
add a comment
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python exception message capturing
...ogger.error(e, exc_info=True)
... exception handling ...
This is now the old way (though still works):
import sys, traceback
def catchEverything():
try:
... some operation(s) ...
except:
exc_type, exc_value, exc_traceback = sys.exc_info()
... exception han...
Is it possible to print a variable's type in standard C++?
...(and good) answer is to use typeid(a).name(), where a is a variable name.
Now in C++11 we have decltype(x), which can turn an expression into a type. And decltype() comes with its own set of very interesting rules. For example decltype(a) and decltype((a)) will generally be different types (and f...
How do I create some kind of table of content in GitHub wiki?
...here is one catch in creating links. They have to be lower case. I didn't know that and was wondering why my TOC isn't working. I used #Headers instead of #headers. I thought it was a typo in your answer. Perhaps you can add to your answer this information.
– t3chb0t
...
UIWebView open links in Safari
...
@JedGrant swift version now on stackoverflow.com/questions/2532453/…
– Carl Sharman
Jun 4 '15 at 16:04
2
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Installing Python 3 on RHEL
...t instance to the system default with an altinstall:
$ make altinstall
Now if you want an alternative installation directory, you can pass --prefix to the configurecommand.
Example: for 'installing' Python in /opt/local, just add --prefix=/opt/local.
After the make install step: In order to u...
How do I diff the same file between two different commits on the same branch?
...>...]
For instance, to see the difference for a file "main.c" between now and two commits back, here are three equivalent commands:
$ git diff HEAD^^ HEAD main.c
$ git diff HEAD^^..HEAD -- main.c
$ git diff HEAD~2 HEAD -- main.c
...
Wrap a delegate in an IEqualityComparer
...f your ignore problems with defining a correct hashcode), but I'd like to know if there is an out-of-the-box solution.
13 A...