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Reading Xml with XmlReader in C#
... element following the element that was first read then you can safely and predictably read in the XML stream. So if the reader is currently indexing the <Account> element, after parsing the reader will index the </Accounts> closing tag.
The parsing code looks something like this:
publ...
Set value for particular cell in pandas DataFrame using index
...x']['C'] = 10
modifies df itself.
Warning: It is sometimes difficult to predict if an operation returns a copy or a view. For this reason the docs recommend avoiding assignments with "chained indexing".
So the recommended alternative is
df.at['C', 'x'] = 10
which does modify df.
In [18...
Learning to write a compiler [closed]
...roduction. It doesn't cover more practical parsing methods (opting for non-predictive recursive descent without discussing LL or LR parsing), and as I recall, it doesn't even discuss any sort of optimization theory. Plus, instead of compiling to machine code, it compiles to a bytecode that is suppos...
How does RegexOptions.Compiled work?
...he libraries you depend on are doing, so have little ability to control or predict the best possible size of the cache.
See also: BCL team blog
Note : this is relevant for .NET 2.0 and .NET 4.0. There are some expected changes in 4.5 that may cause this to be revised.
...
What REALLY happens when you don't free after malloc?
...ded amount of storage, versus situations which can only waste a finite and predictable amount of storage.
– supercat
Apr 24 '18 at 18:46
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Why wasn't PyPy included in standard Python?
...Python's reference counting scheme for memory management arguably has more predictable performance impacts than PyPy's various GC systems, although this isn't necessarily true of all "pure GC" strategies.
PyPy does not yet fully support Python 3.x, although that is an active work item.
PyPy is a g...
How does Google Instant work?
...
Yeah, I saw that, but is there any predicting going on, or do you think it's just a straight up google search?
– DexterW
Sep 8 '10 at 18:36
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Why is Java Vector (and Stack) class considered obsolete or deprecated?
...
@Samir: No, I'm not going to try to predict the future.
– Jon Skeet
Mar 9 '12 at 17:11
5
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What is the purpose of python's inner classes?
..., same class name
pass
This code leads to a quite reasonable and predictable behaviour:
>>> type(A().make_B())
<class '__main__.A.B'>
>>> type(A().make_B().parent)
<class '__main__.A'>
>>> type(AA().make_B())
<class '__main__.AA.B'>
>>>...
Redis strings vs Redis hashes to represent JSON: efficiency?
...tion states:
Keep in mind that if I use a hash, the value length isn't predictable. They're not all short such as the bio example above.
And as you already said: the fourth solution is the most expensive +70 byte per each attribute for sure.
My suggestion how to optimize such dataset:
You'v...