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Check for installed packages before running install.packages() [duplicate]
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16 Answers
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Active
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SQLAlchemy IN clause
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How about
session.query(MyUserClass).filter(MyUserClass.id.in_((123,456))).all()
edit: Without the ORM, it would be
session.execute(
select(
[MyUserTable.c.id, MyUserTable.c.name],
MyUserTable.c.id.in_((123, 456))
)
).fetchall()
select() takes two parameters...
Using member variable in lambda capture list inside a member function
The following code compiles with gcc 4.5.1 but not with VS2010 SP1:
4 Answers
4
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How to handle click event in Button Column in Datagridview?
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14 Answers
14
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How to exclude a file extension from IntelliJ IDEA search?
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187
In intellij 16 there is a section "File name Filter" to exclude an extension use !*.java. You ...
postgresql - add boolean column to table set default
...ULT FALSE;
UPDATE: following is only true for versions before postgresql 11.
As Craig mentioned on filled tables it is more efficient to split it into steps:
ALTER TABLE users ADD COLUMN priv_user BOOLEAN;
UPDATE users SET priv_user = 'f';
ALTER TABLE users ALTER COLUMN priv_user SET NOT NULL;
A...
Replace first occurrence of string in Python
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241
string replace() function perfectly solves this problem:
string.replace(s, old, new[, maxreplac...
How do I tell git-svn about a remote branch created after I fetched the repo?
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answered Sep 16 '09 at 3:23
vjangusvjangus
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Using python “with” statement with try-except block
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140
The two code blocks you gave are
not equivalent
The code you described as old way
of doing th...
How to copy from current position to the end of line in vi
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161
The normal-mode command to move to the end of the line is $.
You can copy to the end of the ...