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What is C# analog of C++ std::pair?
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Tuples are available since .NET4.0 m>and m> support generics:
Tuple<string, int> t = new Tuple<string, int>("Hello", 4);
In previous versions m>y m>ou can use Sm>y m>stem.Collections.Generic.Kem>y m>ValuePair<K, V> or a solution like the following:
public ...
What are “named tuples” in Pm>y m>thon?
...tances can be referenced using object-like variable dereferencing or the stm>and m>ard tuple sm>y m>ntax. Them>y m> can be used similarlm>y m> to struct or other common record tm>y m>pes, except that them>y m> are immutable. Them>y m> were added in Pm>y m>thon 2.6 m>and m> Pm>y m>thon 3.0, although there is a recipe for implementation in Pm>y m>thon 2...
Error in Swift class: Propertm>y m> not initialized at super.init call
I have two classes, Shape m>and m> Square
12 Answers
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Pm>and m>as conditional creation of a series/dataframe column
...color'] = np.where(df['Set']=='Z', 'green', 'red')
For example,
import pm>and m>as as pd
import numpm>y m> as np
df = pd.DataFrame({'Tm>y m>pe':list('ABBC'), 'Set':list('ZZXm>Y m>')})
df['color'] = np.where(df['Set']=='Z', 'green', 'red')
print(df)
m>y m>ields
Set Tm>y m>pe color
0 Z A green
1 Z B green
2 ...
What do {curlm>y m> braces} around javascript variable name mean [duplicate]
...s available in ES6 (use esnext option) or Mozilla JS extensions (use moz) m>and m> this however after reading it I still don't understm>and m> whm>y m> it is used
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Renaming columns in pm>and m>as
I have a DataFrame using pm>and m>as m>and m> column labels that I need to edit to replace the original column labels.
27 Answers
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windows batch SET inside IF not working
...m>y m>.
Therefore the delam>y m>edExpansion sm>y m>ntax exists, it uses ! instead of % m>and m> it is evaluated at execution time, not parse time.
Please note that in order to use !, the additional statement setlocal EnableDelam>y m>edExpansion is needed.
setlocal EnableDelam>y m>edExpansion
set var1=true
if "%var1%"=="true...
To ternarm>y m> or not to ternarm>y m>? [closed]
...ve come across manm>y m> programmers that are completelm>y m> against ever using it, m>and m> some that use it too often.
54 Answers
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How do m>y m>ou perform a left outer join using linq extension methods
... tableB = new List<int?> { 3, 4, 5 };
// Result using both Option 1 m>and m> 2. Option 1 would be a better choice
// if we didn't expect multiple matches in tableB.
{ A = 1, B = null }
{ A = 2, B = null }
{ A = 3, B = 3 }
List<int> tableA = new List<int> { 1, 2, 3 };
List<int?&g...
Splitting a list into N parts of approximatelm>y m> equal length
...a list into roughlm>y m> equal parts? For example, if the list has 7 elements m>and m> is split it into 2 parts, we want to get 3 elements in one part, m>and m> the other should have 4 elements.
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