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Cast Object to Generic Type for returning
...y way to use .isArray() inside convertInstanceOfObject() in the someObject and extract the class (as the intArrayType) from it by reflection and then call an internal private method passing those? But even doing this, I must to create an empty array and pass it in the public method, right?
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Unable to simultaneously satisfy constraints, will attempt to recover by breaking constraint
Below is the error message I receive in the debug area. It runs fine and nothing is wrong except that I receive this error. Would this prevent apple accepting the app? How do I fix it?
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ActiveRecord: size vs count
In Rails, you can find the number of records using both Model.size and Model.count . If you're dealing with more complex queries is there any advantage to using one method over the other? How are they different?
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python list in sql query as parameter
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@bobince in my case I have assigned a variable a='john' and b='snow' and stored it in a tuple with the name got=['a,b'] and did performed the same query. Doing this I got the erroy i.e. Type Error: not all arguments converted during string formatting. How am I supposed to solbe i...
Auto reloading python Flask app upon code changes
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The current recommended way is with the flask command line utility.
https://flask.palletsprojects.com/en/1.1.x/quickstart/#debug-mode
Example:
$ export FLASK_APP=main.py
$ export FLASK_ENV=development
$ flask run
or in one command:
$ FLASK_APP=main.py FLASK_ENV=develo...
Sending “User-agent” using Requests library in Python
...specified as a field in the header.
Here is a list of HTTP header fields, and you'd probably be interested in request-specific fields, which includes User-Agent.
If you're using requests v2.13 and newer
The simplest way to do what you want is to create a dictionary and specify your headers direct...
A weighted version of random.choice
I needed to write a weighted version of random.choice (each element in the list has a different probability for being selected). This is what I came up with:
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Assigning a variable NaN in python without numpy
...r all comparisons returning false for IEEE754 NaN values? for more details and information.
Instead, use math.isnan(...) if you need to determine if a value is NaN or not.
Furthermore, the exact semantics of the == operation on NaN value may cause subtle issues when trying to store NaN inside con...
How can I temporarily disable a foreign key constraint in MySQL?
... answered Mar 19 '13 at 14:07
Andrew CampbellAndrew Campbell
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How can I remove an element from a list?
I have a list and I want to remove a single element from it. How can I do this?
16 Answers
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