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How do I execute a string containing Python code in Python?
...pser you should be mych more concerned with using exec at all (unless you know the code string comes from a trusted source).
– bruno desthuilliers
Dec 2 '19 at 17:00
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Pandas convert dataframe to array of tuples
I have manipulated some data using pandas and now I want to carry out a batch save back to the database. This requires me to convert the dataframe into an array of tuples, with each tuple corresponding to a "row" of the dataframe.
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Scala: write string to file in one statement
...if I look at /tmp/example.txt there is no.
– user unknown
Feb 9 '12 at 1:28
@user unknown, Sorry for missing out the '...
Is there a read-only generic dictionary available in .NET?
...d too, but at least with the interface it shouldn't be difficult to create now an implementation which exposes an official .NET generic interface :)
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Is it alright to use target=“_blank” in HTML5?
... was no longer okay to use target="_blank" in HTML5, but I can't find it now.
9 Answers
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[精华] VC中BSTR、Char和CString类型的转换 - C/C++ - 清泛网 - 专注C/C++及内核技术
...h (...)
{
return E_OUTOFMEMORY;
}
// The client is now responsible for freeing pbstr.
return( S_OK );
}
//...
· 时刻牢记BSTR是一个指针，而不是一个对象。尽量减少使用BSTR作为结构体或类的成员变量。如果必须使用，一定要...
What is the official “preferred” way to install pip and virtualenv systemwide?
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If you can install the latest Python (2.7.9 and up) Pip is now bundled with it.
See: https://docs.python.org/2.7//installing/index.html
If not :
Update (from the release notes):
Beginning with v1.5.1, pip does not require setuptools prior to running get-pip.py. Additionally, if ...
When to use EntityManager.find() vs EntityManager.getReference() with JPA
...etter method). Just to change state (I mean setter method). As you should know, getReference returns a proxy object which uses a powerful feature called automatic dirty checking. Suppose the following
public class Person {
private String name;
private Integer age;
}
public class PersonS...
Using variables inside a bash heredoc
... this was down-voted, but it adds a valid note which is not covered in the now higher voted answer.
– Inian
Jan 30 '19 at 7:16
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Parameterize an SQL IN clause
...f int[] (document/SQL keys) and then the code above comes in. The whole OP now takes less than 200ms :)
– Fredrik Johansson
May 3 '13 at 6:57
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