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Importing a CSV file into a sqlite3 database table using Python
...` statement available in 2.5+
# csv.DictReader uses first line in file for column headings by default
dr = csv.DictReader(fin) # comma is default delimiter
to_db = [(i['col1'], i['col2']) for i in dr]
cur.executemany("INSERT INTO t (col1, col2) VALUES (?, ?);", to_db)
con.commit()
con.c...
How do you rename a table in SQLite 3.0?
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Thanks for contributing an answer to Stack Overflow!Please be sure to answer the question. Provide details and share your research!But avoid …Asking for help, clarification, or responding to other answers.Making statements based o...
How do I convert a string to a double in Python?
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Use >>> 0.1 + 0.2 for double. >>> 0.1 + 0.6 for float.
– user1510539
Sep 4 '17 at 10:03
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Adding Xcode Workspace Schemes to Version Control
...be moved into a folder called "xcshareddata".
Update: This works the same for Xcode 4-8.
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NUnit's Assert.Equals throws exception “Assert.Equals should not be used for assertions”
...ws an AssertionException stating that
Assert.Equals should not be used for Assertions. This is a bit baffling at first glance. What's going on here?
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How to calculate a mod b in Python?
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There's the % sign. It's not just for the remainder, it is the modulo operation.
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Google Developer Tools “Network” Tab clears after redirect
...self when you are filtering requests by "Doc". This filter is quite useful for filtering out all the noise from resource requests. In any case, when filtering by "Doc" (or some other filter), the original (pre-direction) POST requests are still recorded, but kept under the "Other" filter!
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String concatenation in MySQL
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MySQL is different from most DBMSs use of + or || for concatenation. It uses the CONCAT function:
SELECT CONCAT(first_name, " ", last_name) AS Name FROM test.student
As @eggyal pointed out in comments, you can enable string concatenation with the || operator in MySQL by s...
How to disable visual “dots” in Visual Studio Editor
How can I can disable the "dots" for spaces in Microsoft Visual Studio?
5 Answers
5
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What limits does scala place on the “acceptable complexity” of inferred types?
...r often needs to calculate the Least Upper Bound (LUB) of a list of types. For example, the type of if (cond) e1 else e1 is the LUB of the types of e1 and e1.
These types can get quite large, for example try this in a REPL:
:type Map(1 -> (1 to 10), 2 -> (1 to 10).toList)
scala.collection.im...