eev | A tiny , fast , zero-dependency event emitter | Pub Sub library
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kandi X-RAY | eev Summary
A tiny, fast, zero-dependency event emitter for JavaScript.
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QUESTION
I have a program that stores information into a binary tree.
I am attempting to print all of the information on to a text file using PrintWriter, which has worked for me in previous situations, but I've had no luck this time.
It is mandatory to have the information called in the node via an object. I have debugged and determined the placement of the nodes in the tree is working perfectly, so the problem is with printing to a file.
The last thing to note is that if I print to the console via System.out, it prints perfectly.
ANSWER
Answered 2020-Apr-26 at 16:31The problem with your print method is the creation of a new PrintWriter instance for every call writing the first line of the file, so at the closing of every PrintWriter instance it overwrites the first line of the file. A method to avoid this behaviour is creating one PrintWriter and pass it as a parameter like below:
QUESTION
I know that there are a lot of questions about duplicates but I can't find a solution suitable for me.
I have a json structure like this:
...ANSWER
Answered 2019-Nov-05 at 14:00You are first adding everything to tmp and then to tmp2 because every value was added to tmp before.
I changed the function a little bit to work for your specific test example:
QUESTION
I have a similar Json structure:
...ANSWER
Answered 2019-Nov-04 at 12:53You need to assign the split list back to the data. In your code, you are just discarding it. You're treating x['name2'] like a reference to a string rather than a string value. You can't assign it to another variable and expect that to be reflected in the data structure- you need to explicitly update the data structure with the new value.
QUESTION
I'm an engineering student and new user at CPLEX. When I ran my script, it says that one of my constraints is non convex. I know I should linearize it, but I don't know how.
x[i][j] is a binary variable.
E[i] is a continuous variable, that depends on x[i][j].
eev[i] is an input (energy wasted on route i).
edh[i] is an input (energy wasted from i to j).
emax is also an input, a constant. Is the initial battery level, its maximum.
This is part of a electric vehicle scheduling formulation and E[i] is the energy remained on that vehicle after doing route i.
How can I linearize the following constraint so it won't be non-convex:
...ANSWER
Answered 2019-Jul-07 at 13:23You could change
QUESTION
I have a simple method to search a pandas dataframe column for a list of keywords; however, I'd like to create a function to pass a word (or words) through so I don't need to continuously update my search list.
My current method:
...ANSWER
Answered 2019-Mar-25 at 00:31I tried your function and it works. The problem may be the keyword values that you pass.
I have made a small change to your function in order to make it a little more useful:
QUESTION
TL;DR: how to use type(self) in the decorator of a member function?
I would like to do serialization of derived classes and share some serialization logic in the base class in Python.
Since pickle and simple yaml did not seem to be able to deal with this reliably, I then stumbled over camel which I consider a quite neat solution to the problem see this link.
Consider two extremely simplified classes B and A where B is inheriting from A. I want to be able to serialize B in my main function like this:
ANSWER
Answered 2018-Oct-20 at 11:21Your version 3 is not going to work because, as you probably noticed, at the
time the decorator is called, A is not defined yet.
If you would write your decorator
in the way before the @ syntactic sugar was added to Python:
QUESTION
When I brows a Visual FoxPro Memo Field, the field contains strange characters such as :
"ѲÈʼ‡²·ÄÉ¿²º»¼¼†²º»¼Ê·¸ˆ†Ñ²¼ÅÄÊʸÂѲ¼†²¼ÉÍ¿ÉÉv£©v©·ÄÉv©»È¿¼‘ÓѲ¼‡²¼º»¹ÅȲ¼¹¾·Èɻʈv©ÏøÅ‘ÓѲ¼ˆ²¼ÉÍ¿ÉÉv—È¿·Â‘ÓѲ¼‰²¼ÈÅ÷Ävª¿Ã»Év¤»Ív¨Å÷đÓÓcѲ¹ÅÂÅÈʸ²Ȼº†²½È»»Ä†²¸ÂË»†‘Óc²º»¼Â·Ä½‡†‰‰²Æ·Èº²Æ·¿Ä²¼ˆ²¼ÉˆŠv±¦»¹¾ÅËÉvœ·Ã¿Âϳc²Æ·Èvȷĺ¼·Ê¾»Èv žÄv¦»¹¾ÅËÉvº¿»ºvżv·vž»·ÈÊv—ÊÊ·¹Áv;¿Â»vÍÅÈÁ¿Ä½v¹·ÈÈϿĽvª¬vɻʄc²Æ·ÈvÓc`V"
This is in all the memo fields of the table. What causes this and how can I recover my data?
...ANSWER
Answered 2017-Dec-26 at 14:59You say 'recover'; do you know for certain that the MEMO fields previously contained plain text data that you could make sense of? If it did and now it doesn't, it's possible you've been hit by encrypting ransomware malware.
If it's always been encrypted and you want to decrypt it outside whatever application created the files, you'll have to figure out what method was used to encrypt it and what key was used, or talk to the developer.
QUESTION
While converting from python 2.x -> python 3.x, I found this change in the behavior of the built-in max function. I didn't find it documented in any of the standard locations for migration issues.
https://eev.ee/blog/2016/07/31/python-faq-how-do-i-port-to-python-3/
http://python-future.org/compatible_idioms.html
How do I fix this?
Python 2.x:
...ANSWER
Answered 2017-Dec-04 at 06:22Answering my own question: there is no backwards compatible max, but it is arguable that trying to find the max of None doesn't really make sense.
The entries that I was comparing were timestamps, and I knew that they would never be negative. So I changed my code to return 0 instead of None, so the max turned to max([0,0,0]) which worked.
If you can't make such guarantees about your data, you could return -sys.maxsize instead.
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