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Increment a value in Postgres
... I was trying to increment non-integer datatype and getting:ERROR: operator does not exist: character varying + integer LINE 2: SET total = total + 1 Solved by casting the value as integer like this SET total = total::int + 1
– Stew-au
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.classpath and .project - check into version control or not?
... need to recreate all of those settings, which is annoying and potentially error prone.
Some complex setups may be better handled by a script to generate these files, but usually it is better to just check them in.
share
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rvm installation not working: “RVM is not a function”
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As you said, the error shown could be the following one.
RVM is not a function, selecting rubies with 'rvm use ...' will not work.
You need to change your terminal emulator preferences to allow login shell.
Sometimes it is required to use `...
What is the difference between .text, .value, and .value2?
...Value2 gives you the underlying value of the cell (could be empty, string, error, number (double) or boolean)
.Value gives you the same as .Value2 except if the cell was formatted as currency or date it gives you a VBA currency (which may truncate decimal places) or VBA date.
Using .Value or .Text...
A weighted version of random.choice
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This doesn't work with tuples etc ("ValueError: a must be 1-dimensional"), so in that case one can ask numpy to pick the index into the list, i.e. len(list_of_candidates), and then do list_of_candidates[draw]
– xjcl
Mar 17 '19 ...
Check if a Bash array contains a value
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@James by convention the success code in bash is "0" and error is everything >= 1. This is why it returns 0 on success. :)
– tftd
Nov 2 '16 at 23:49
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Printing leading 0's in C?
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printf("%05d", zipCode);
The 0 indicates what you are padding with and the 5 shows the length of the integer number. For example if you use "%02d" (Useful for dates) this would only pad zeros for numbers in the ones column ie.(06 in...
C++, variable declaration in 'if' expression
... statement. In which case wouldn't it be better if the compiler raised an error only in those cases where there is a possibilty of the conditional statement scope being entered when a part of the expression that declared a variable was not processed? Which was not the case in the examples I gave.
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Get environment variable value in Dockerfile
... unfortunately that does not seem to work (Docker 17.09), I get the error unable to prepare context: the Dockerfile (/dev/fd/63) must be within the build context
– Alexander Klimetschek
Oct 31 '17 at 0:52
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How to convert from System.Enum to base integer?
... Converter.ToInteger(MyEnum.MyEnumConstant); will give you no error here. Please edit that part.
– nawfal
Dec 1 '13 at 9:03
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