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How do I delete an exported environment variable?
Before installing gnuplot, I set the environment variable GNUPLOT_DRIVER_DIR = /home/gnuplot/build/src . During the installation, something went wrong.
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Is there any way to hide “-” (Delete) button while editing UITableView
... equivalent to accepted answer with just the needed funcs:
func tableView(_ tableView: UITableView, shouldIndentWhileEditingRowAt indexPath: IndexPath) -> Bool {
return false
}
func tableView(_ tableView: UITableView, editingStyleForRowAt indexPath: IndexPath) -> UITableViewCellEditingSt...
How to pass table value parameters to stored procedure from .net code
...to work with it. Assuming your table is a list of integers called "dbo.tvp_Int" (Customize for your own table type)
Create this extension method...
public static void AddWithValue_Tvp_Int(this SqlParameterCollection paramCollection, string parameterName, List<int> data)
{
if(paramCollect...
Convert a String representation of a Dictionary to a dictionary?
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Starting in Python 2.6 you can use the built-in ast.literal_eval:
>>> import ast
>>> ast.literal_eval("{'muffin' : 'lolz', 'foo' : 'kitty'}")
{'muffin': 'lolz', 'foo': 'kitty'}
This is safer than using eval. As its own docs say:
>>> help(ast.literal_e...
Class constants in python
In python, I want a class to have some "constants" (practically, variables) which will be common in all subclasses. Is there a way to do it with friendly syntax?
Right now I use:
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Getting “unixtime” in Java
... platforms (and the year 2038 problem). 64-bit platforms use a larger time_t data type. Java dodged that bullet by using a long as the return for System.currentTimeMillis(). If you convert to int, you're re-introducing the year 2038 problem. See en.wikipedia.org/wiki/Year_2038_problem#Solutions
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target=“_blank” vs. target=“_new”
...or window when the user clicks on the link.
Using target="_new" is technically invalid according to the specifications, but as far as I know every browser will behave the same way:
it will search for a tab or window with the context name "_new"
if a "_new" tab/window is found, then the URL is loa...
sqlalchemy IS NOT NULL select
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column_obj != None will produce a IS NOT NULL constraint:
In a column context, produces the clause a != b. If the target is None, produces a IS NOT NULL.
or use isnot() (new in 0.7.9):
Implement the IS NOT operator.
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How to define @Value as optional
...swered Jan 8 '18 at 13:23
alonso_50alonso_50
9941010 silver badges1515 bronze badges
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Duplicate headers received from server
...invalidChars);
string replace = Regex.Replace(name, invalidReStr, "_").Replace(";", "").Replace(",", "");
return replace;
}
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