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How to declare std::unique_ptr and what is the use of it?
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The constructor of unique_ptr<T> accepts a raw pointer to an object of type T (so, it accepts a T*).
In the first example:
unique_ptr<int> uptr (new int(3));
The pointer is the result of a new expression, while in the second example:
unique_ptr<double>...
Storing time-series data, relational or non?
...It allows me to produce Charts Like This, six keystrokes after receiving a raw monitoring stats file from the customer, using a single SELECT command. Notice the mix-and-match; OS and server on the same chart; a variety of Pivots. Of course, there is no limit to the number of stats matrices, and th...
SignalR: Why choose Hub vs. Persistent Connection?
...sistent connections you have to embed the message type in the payload (see Raw sample) but hubs gives you the ability to do RPC over a connection (lets you call methods on on the client from the server and from the server to the client). Another big thing is model binding. Hubs allow you to pass str...
Select Last Row in the Table
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This method is worse actually. You are fetching last raw using PHP execution instead of doing it as DB level. What if table has millions of raw, then you know how much inefficient it can be?
– Bhaskar Dabhi
Nov 23 '16 at 6:59
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Why is using onClick() in HTML a bad practice?
...write:
<button (click)="someAction()">Click Me</button>
In raw js/html the equivalent of this will be
<button onclick="someAction()">Click Me</button>
The difference is that in raw js onclick event is run in the global scope - but the frameworks provide encapsulation.
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jQuery : eq() vs get()
... which means that it accepts jQuery functions.
.get() returns an array of raw DOM elements. You may manipulate each of them by accessing its attributes and invoking its functions as you would on a raw DOM element. But it loses its identity as a jQuery-wrapped object, so a jQuery function like .fade...
What is the maximum length of a table name in Oracle?
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LOW_VALUE RAW(32)
HIGH_VALUE RAW(32)
DENSITY NUMBER
NUM_NULLS ...
What is the perfect counterpart in Python for “while not EOF”
...sure performant reads.
You can do the same with the stdin (no need to use raw_input():
import sys
for line in sys.stdin:
do_something()
To complete the picture, binary reads can be done with:
from functools import partial
with open('somefile', 'rb') as openfileobject:
for chunk in ite...
what is the difference between 'transform' and 'fit_transform' in sklearn
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Generic difference between the methods:
fit(raw_documents[, y]): Learn a vocabulary dictionary of all tokens in the raw documents.
fit_transform(raw_documents[, y]): Learn the vocabulary dictionary and return term-document matrix. This is equivalent to fit followed by ...
How do you read from stdin?
...s for this to work.)
If you want to prompt the user for input, you can use raw_input in Python 2.X, and just input in Python 3.
If you actually just want to read command-line options, you can access them via the sys.argv list.
You will probably find this Wikibook article on I/O in Python to be a...