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Design Patterns: Factory vs Factory method vs Abstract Factory
... working code, there are defects in existing working flows, and a lot more testing needs to get done to ensure that we did not break anything.
A factory pattern creates objects based on input criteria, thus ensuring that you dont need to write code like if this then create this kinda object else th...
Threading in a PyQt application: Use Qt threads or Python threads?
... times per second, in an application that runs cross-platform and has been tested for 1000's of hours. I have never seen any problems from that. I think it's fine as long as the destination object is located in the MainThread or a QThread. I also wrapped it up in a nice library, see qtutils.
...
What are the differences between “=” and “
... Note that any non-0 is considered TRUE by R. So if you intend to test if x is less than -y, you might write if (x<-y) which will not warn or error, and appear to work fine. It'll only be FALSE when y=0, though.
– Matt Dowle
Jun 8 '12 at 15:21
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log4j logging hierarchy order
...application, this java logging mode should only be used on Development and Testing environment and must not be used in production environment.
INFO is more restricted than DEBUG java logging level and we should log messages which are informative purpose like Server has been started, Incoming messag...
How to handle the modal closing event in Twitter Bootstrap?
...or so on. While hidden is fired after the modal is actually close. You can test these events your self. For exampel:
$( '#modal' )
.on('hide', function() {
console.log('hide');
})
.on('hidden', function(){
console.log('hidden');
})
.on('show', function() {
consol...
Python subprocess.Popen “OSError: [Errno 12] Cannot allocate memory”
...ting killed instead of failing to spawn, which is even worse..
After some testing I found that this only occurred on older versions of python: it happens with 2.6.5 but not with 2.7.2
My search had led me here python-close_fds-issue, but unsetting closed_fds had not solved the issue. It is still w...
Find a commit on GitHub given the commit hash
...w that you can use the four initial numbers of the hash (the minimum in my tests), because there’s no auto completion for the hash; and you can't specify the branch like this: git log master -p -1 35e3. Git version: 1.7.9.5.
– Rafael Barros
Dec 4 '13 at 23:08...
How to use shell commands in Makefile
...e over each item in the list and execute a command on it? Such as build or test?
– anon58192932
Oct 12 '16 at 19:56
3
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Assigning a variable NaN in python without numpy
...only doing one or two assignments of nan total, then using numpy.nan is fastest.
– Daniel Goldfarb
Apr 12 '19 at 17:45
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Google Guice vs. PicoContainer for Dependency Injection
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I just made a simple performance test with Guice/Spring/PicoContainer - Guice and PicoContainer are fairly similar. In some cases Guice was a little faster. Spring was very slow in all cases.
– Joshua Davis
Jun 25 '1...