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What does auto&& tell us?
...amp; works perfectly! An example of using auto&& like this is in a range-based for loop. See my other question for more details.
If you then use std::forward on your auto&& reference to preserve the fact that it was originally either an lvalue or an rvalue, your code says: Now that ...
How to learn R as a programming language [closed]
... program" in any language involves finding problems outside of your normal range of experience and then trying to solve them using a programming language.
The projects that taught me the most about how to program with R had nothing to do with statistics at all.
Knowing functions like parse() and e...
Python pandas: fill a dataframe row by row
... pandas as pd
df = pd.DataFrame(columns=('col1', 'col2', 'col3'))
for i in range(5):
df.loc[i] = ['<some value for first>','<some value for second>','<some value for third>']`
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OPTION (RECOMPILE) is Always Faster; Why?
...ATISTICS - Statistics are out of date. A database stores statistics on the range and distribution of the types of values in various column on tables and indexes. This helps the query engine to develop a "Plan" of attack for how it will do the query, for example the type of method it will use to matc...
jQuery datepicker set selected date, on the fly
...eck that the date you are trying to set it to lies within the allowed date range if the minDate or maxDate options are set.
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SQL Server 2005 How Create a Unique Constraint?
...col1 IS NOT NULL;
See Field value must be unique unless it is NULL for a range of answers.
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Convert integer to binary in C#
...ing Enumerable and LINQ is:
int number = 25;
string binary = Enumerable.Range(0, (int) Math.Log(number, 2) + 1).Aggregate(string.Empty, (collected, bitshifts) => ((number >> bitshifts) & 1 )+ collected);
sha...
Approximate cost to access various caches and main memory?
...
Here is a Performance Analysis Guide for the i7 and Xeon range of processors. I should stress, this has what you need and more (for example, check page 22 for some timings & cycles for example).
Additionally, this page has some details on clock cycles etc. The second link serv...
Regular expression for a hexadecimal number?
...y either a lower or uppercase x, followed by one or more characters in the ranges 0-9, or a-f, or A-F
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What's the difference between “groups” and “captures” in .NET regular expressions?
...am|pm)").
> Groups.Cast<Group>().
> Zip(Enumerable.Range(0, int.MaxValue), (g, n) => "[" + n + "] " + g);
{ "[0] 3:10pm", "[1] 3", "[2] 3", "[3] 10", "[4] 0", "[5] pm" }
So where's the 1?
Since there are multiple digits that match on the fourth group, we only "get at" ...