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Are HLists nothing more than a convoluted way of writing tuples?
...or an extended example.
It is true, as you observe, that all of these mechanism require static type information to be available, at least conditionally, and that would seem to exclude these techniques from being usable in a completely dynamic environment, fully driven by externally provided untyped...
How to duplicate sys.stdout to a log file?
Edit: Since it appears that there's either no solution, or I'm doing something so non-standard that nobody knows - I'll revise my question to also ask: What is the best way to accomplish logging when a python app is making a lot of system calls?
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How to find out if an item is present in a std::vector?
All I want to do is to check whether an element exists in the vector or not, so I can deal with each case.
18 Answers
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Create a new object from type parameter in generic class
...so any getters/setters defined in T may not work.
– Daniel Ormeño
Jul 5 '17 at 0:49
@DanielOrmeño care to explain? W...
Does Python have a string 'contains' substring method?
I'm looking for a string.contains or string.indexof method in Python.
10 Answers
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What is the advantage of using abstract classes instead of traits?
... answered Jan 2 '10 at 14:45
Daniel C. SobralDaniel C. Sobral
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Returning IEnumerable vs. IQueryable
...ossible.
For the IEnumerable<T> case, it will be LINQ-to-object, meaning that all objects matching the original query will have to be loaded into memory from the database.
In code:
IQueryable<Customer> custs = ...;
// Later on...
var goldCustomers = custs.Where(c => c.IsGold);
T...
What Ruby IDE do you prefer? [closed]
I've been using Eclipse with RDT (not RadRails) a lot lately, and I'm quite happy with it, but I'm wondering if you guys know any decent alternatives. I know NetBeans also supports Ruby these days, but I'm not sure what it has to offer over Eclipse.
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How to perform better document version control on Excel files and SQL schema files
...es, but the problem here is that .xls format is binary, so you can't get meaningful diffs from it. But you'll still be able to see modification history and checkout specific versions.
share
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improv...
Invalidating JSON Web Tokens
...ss reason to use JWT instead of other established token authentication mechanisms. You've essentially made JWT stateful, instead of stateless if you go to the datastore each time.
(If your site receives a high volume of unauthorized requests, then JWT would deny them without hitting the datastore, ...