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How do I automatically update a timestamp in PostgreSQL
I want the code to be able to automatically update the time stamp when a new row is inserted as I can do in MySQL using CURRENT_TIMESTAMP.
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Cannot use ref or out parameter in lambda expressions
...e visible on the ref parameter itself. Both within the method and in the caller.
These are somewhat incompatible properties and are one of the reasons they are disallowed in lambda expressions.
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Spring schemaLocation fails when there is no internet connection
...ks even though intellij doesn't recognize the classpath syntax inside schemalLocation and highlights it as a error.
– Upgradingdave
Feb 27 '13 at 19:33
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Postgresql SELECT if string contains
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You should use 'tag_name' outside of quotes; then its interpreted as a field of the record. Concatenate using '||' with the literal percent signs:
SELECT id FROM TAG_TABLE WHERE 'aaaaaaaa' LIKE '%' || tag_name || '%';
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How to automatically convert strongly typed enum into int?
The a::LOCAL_A is what the strongly typed enum is trying to achieve, but there is a small difference : normal enums can be converted into integer type, while strongly typed enums can not do it without a cast.
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Right way to reverse pandas.DataFrame?
...ata.Odd[idx])
You are getting an error because reversed first calls data.__len__() which returns 6. Then it tries to call data[j - 1] for j in range(6, 0, -1), and the first call would be data[5]; but in pandas dataframe data[5] means column 5, and there is no column 5 so it will throw an exceptio...
In a javascript array, how do I get the last 5 elements, excluding the first element?
... huge javascript minified file if your trying to do it from your browser.
_.slice(_.rest(arr), -5)
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What is the official “preferred” way to install pip and virtualenv systemwide?
...here/how do you install setuptools-0.8? Looks like you are just grabbing ez_setup.py for a "lightweight version" of getting pip. I'd do the same but fear that it will break in the near future and I'll get stuck here again (like I always do)
– Steven Lu
Jul 13 '...
UnicodeDecodeError: 'utf8' codec can't decode byte 0xa5 in position 0: invalid start byte
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I switched this simply by defining a different codec package in the read_csv() command:
encoding = 'unicode_escape'
Eg:
import pandas as pd
data = pd.read_csv(filename, encoding= 'unicode_escape')
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How do I download a tarball from GitHub using cURL?
I am trying to download a tarball from GitHub using cURL , but it does not seem to be redirecting:
5 Answers
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