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Pros and cons of Java rules engines [closed]
...and Drools?
Use a rule engine if you need to separate the business rules from the application logic. The Does Your Project Need a Rule Engine article has a good example:
For example, a typical storefront
system might involve code to calculate
a discount:
if (product.quantity > 100 &...
Convert JavaScript string in dot notation into an object reference
...erencing them). Like asking "how can I look up a function or variable name from a string".
This is bad programming practice (unnecessary metaprogramming specifically, and kind of violates function side-effect-free coding style, and will have performance hits). Novices who find themselves in ...
Git authentication fails after enabling 2FA
...username and password but that didn't work. In particular, when switching from https to ssh, the ssh key gives
8 Answers
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Explain the concept of a stack frame in a nutshell
...atter it has loaded the local variables or not, it will immediately return from stack with it's stack frame. It means that whenever any recursive function get base condition satisfied and we put a return after base condition, the base condition will not wait to load local variables which are located...
Should IBOutlets be strong or weak under ARC?
...
The current recommended best practice from Apple is for IBOutlets to be strong unless weak is specifically needed to avoid a retain cycle. As Johannes mentioned above, this was commented on in the "Implementing UI Designs in Interface Builder" session from WWDC 2...
Git branching: master vs. origin/master vs. remotes/origin/master
...nch -a could be much clearer, perhaps by separating the name of the remote from the name of the branch with something other than a slash.
– Matt Hurne
May 14 '12 at 18:13
15
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Rename a git submodule
...tree but also updating the "submodule.<submodule name>.path" setting from the .gitmodules file and stage both.
This doesn't happen when no .gitmodules file is found and only issues a warning when it doesn't have a section for this submodule. This is because the user might just use plain gitl...
Iterate through a HashMap [duplicate]
...
Extracted from the reference How to Iterate Over a Map in Java:
There are several ways of iterating over a Map in Java. Let's go over the most common methods and review their advantages and disadvantages. Since all maps in Java implem...
Difference between repository and service?
... to data/objects. It is a way of decoupling the way you store data/objects from the rest of the application.
A service supplies coordination or other "services" that are required to operate your application. They are very different in that Services don't typically know how to access data from persi...
How to debug a GLSL shader?
...
You can't easily communicate back to the CPU from within GLSL. Using glslDevil or other tools is your best bet.
A printf would require trying to get back to the CPU from the GPU running the GLSL code. Instead, you can try pushing ahead to the display. Instead of t...