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Adding Http Headers to HttpClient
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edited Nov 7 '19 at 10:17
Massimiliano Kraus
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Pandas conditional creation of a series/dataframe column
...', 'green', 'red')
print(df)
yields
Set Type color
0 Z A green
1 Z B green
2 X B red
3 Y C red
If you have more than two conditions then use np.select. For example, if you want color to be
yellow when (df['Set'] == 'Z') & (df['Type'] == 'A')
otherwise blu...
Updating MySQL primary key
...update the primary key.
alter table xx drop primary key, add primary key(k1, k2, k3);
To fix things:
create table fixit (user_2, user_1, type, timestamp, n, primary key( user_2, user_1, type) );
lock table fixit write, user_interactions u write, user_interactions write;
insert into fixit
selec...
Can I call memcpy() and memmove() with “number of bytes” set to zero?
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147
From the C99 standard (7.21.1/2):
Where an argument declared as size_t n specifies the len...
Check if a table exists in Rails
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edited Mar 29 '17 at 2:24
answered Jul 5 '11 at 23:49
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JavaScript Date Object Comparison
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130
That is because in the second case, the actual date objects are compared, and two objects are ...
Could not load type 'System.Runtime.CompilerServices.ExtensionAttribute' from assembly 'mscorlib
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10 Answers
10
Active
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'size_t' vs 'container::size_type'
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108
The standard containers define size_type as a typedef to Allocator::size_type (Allocator is a ...
Merge cells using EPPlus?
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165
You have to use it like this:
ws.Cells["A1:C1"].Merge = true;
instead of:
using (ExcelRang...