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How exactly does a generator comprehension work?
...enexpr> at 0x7f2ad75f89e0>
>>> len(filtered_gen) # So technically, it has no length
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: object of type 'generator' has no len()
>>> # We extract each item out individually. We'll do it...
Inherit from a generic base class, apply a constraint, and implement an interface in C#
...so want the derived class to implement an interface. For the life of me, I cannot seem to figure out the correct syntax.
4 ...
What's the false operator in C# good for?
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You can use it to override the && and || operators.
The && and || operators can't be overridden, but if you override |, &, true and false in exactly the right way the compiler will call | and & when you w...
Node.js - use of module.exports as a constructor
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CommonJS modules allow two ways to define exported properties. In either case you are returning an Object/Function. Because functions are first class citizens in JavaScript they to can act just like Objects (technically they are Objects). That said your question about using the new keywords has a ...
What is the difference between “int” and “uint” / “long” and “ulong”?
...re unsigned versions with the same bit sizes. Effectively, this means they cannot store negative numbers, but on the other hand they can store positive numbers twice as large as their signed counterparts. The signed counterparts do not have "u" prefixed.
The limits for int (32 bit) are:
int: –21...
How do you create nested dict in Python?
...innerkey'] = 'value'
>>> d
{'dict1': {'innerkey': 'value'}}
You can also use a defaultdict from the collections package to facilitate creating nested dictionaries.
>>> import collections
>>> d = collections.defaultdict(dict)
>>> d['dict1']['innerkey'] = 'value'...
How do I limit the number of results returned from grep?
...rdless of
the presence of trailing context lines. This enables a calling
process to resume a search.
Note: grep stops reading the file once the specified number of matches have been found!
share
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Are static class instances unique to a request or a server in ASP.NET?
...ses and static instance fields are shared between all requests to the application, and has the same lifetime as the application domain. Therefore, you should be careful when using static instances, since you might have synchronization issues and the like. Also bear in mind, that static instances wi...
Setting Short Value Java
...Now when I try to write setTableId(100) it gives compile time error. How can I set the short value without declaring another short variable?
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Unignore subdirectories of ignored directories in Git
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Even if you add something to .gitignore, you can force git to add it to the index
git add --force uploads/rubbish/stuff/KEEP_ME/
However, "KEEP_ME" seems to be a directory and git usually doesnt like empty folder, so you should can add a "placeholder"-holder file ins...