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How big is too big for a PostgreSQL table?
...oblem will be the same on any other RDMS that I know of. If you only need 3 months worth of data design in a process to prune off the data you don't need any more. That way you will have a consistent volume of data on the table. Your lucky you know how much data will exist, test it for your volume...
XPath: How to check if an attribute exists?
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3 Answers
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OpenSSL and error in reading openssl.conf file
I am running windows xp 32bit
16 Answers
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Django - filtering on foreign key properties
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Safest way to convert float to integer in python?
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183
All integers that can be represented by floating point numbers have an exact representation. So ...
For loop example in MySQL
...er < v_max do
insert into foo (val) values ( floor(0 + (rand() * 65535)) );
set v_counter=v_counter+1;
end while;
commit;
end #
delimiter ;
call load_foo_test_data();
select * from foo order by id;
share
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Why is using the JavaScript eval function a bad idea?
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390
Improper use of eval opens up your
code for injection attacks
Debugging can be more challengi...
How to get a value from a cell of a dataframe?
...row as a Series using iloc, and then the value using the column name:
In [3]: sub_df
Out[3]:
A B
2 -0.133653 -0.030854
In [4]: sub_df.iloc[0]
Out[4]:
A -0.133653
B -0.030854
Name: 2, dtype: float64
In [5]: sub_df.iloc[0]['A']
Out[5]: -0.13365288513107493
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How to initialize a private static const map in C++?
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{
map<int,int> m;
m[1] = 2;
m[3] = 4;
m[5] = 6;
return m;
}
static const map<int,int> myMap;
};
const map<int,int> A:: myMap = A::create_map();
int main() {
}
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How to use the “number_to_currency” helper method in the model rather than view?
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103
It’s not available because its use in a model (typically) violates MVC (and it does seem to in...