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What is the documents directory (NSDocumentDirectory)?
...ILABLE(10_8, NA) = 23, // location of the user scripts folder for the calling application (~/Library/Application Scripts/code-signing-id)
NSItemReplacementDirectory NS_ENUM_AVAILABLE(10_6, 4_0) = 99, // For use with NSFileManager's URLForDirectory:inDomain:appropriateForURL:create:err...
What is the use of “assert” in Python?
...rt True # nothing happens
>>> assert False
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
AssertionError
Assertions can include an optional message, and you can disable them when running the interpreter.
To print a message if the assertion fails:
as...
Why can lambdas be better optimized by the compiler than plain functions?
...passing them to a function template will instantiate a new function specifically for that object. The compiler can thus trivially inline the lambda call.
For functions, on the other hand, the old caveat applies: a function pointer gets passed to the function template, and compilers traditionally ha...
What is the point of noreturn?
...rn attribute is supposed to be used for functions that don't return to the caller. That doesn't mean void functions (which do return to the caller - they just don't return a value), but functions where the control flow will not return to the calling function after the function finishes (e.g. functio...
“Single-page” JS websites and SEO
...ernet enabled platforms) both have a similar underlying philosophy: semantically rich markup that is "accessible" (i.e. can be accessed, viewed, read, processed, or otherwise used) to all these different browsers. A screen reader, a search engine crawler or a user with JavaScript enabled, should all...
What is the recommended way to delete a large number of items from DynamoDB?
...
What I ideally want to do is call LogTable.DeleteItem(user_id) -
Without supplying the range, and have it delete everything for me.
An understandable request indeed; I can imagine advanced operations like these might get added over time by the AWS te...
How do I design a class in Python?
...internal state. For this Database object you could hide how the networking calls work, or batch queries or updates, or provide a caching layer.
The problem is this Database object is HUGE. It represents how to access a database, so under the covers it could do anything and everything. Clearly netw...
What is the meaning of the term arena in relation to memory?
...llocation works. The only thing outside your control is the single library call for the initial allocation.
One popular use case is where each arena is only used to allocate memory blocks of one single, fixed size. In that case, you can write very efficient reclamation algorithms. Another use case ...
pass post data with window.location.href
...on attribute of the form to the URL and the method attribute to POST, then call the submit method on the form tag.
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Adding console.log to every function automatically
... there a way to make any function output a console.log statement when it's called by registering a global hook somewhere (that is, without modifying the actual function itself) or via some other means?
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