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DateTime.ToString() format that can be used in a filename or extension?
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You can use this:
DateTime.Now.ToString("yyyy-dd-M--HH-mm-ss");
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Detect backspace in empty UITextField
...return NO for select: and selectAll: actions when the text is equal to the string @"\u200B".
– ma11hew28
Oct 19 '11 at 21:56
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Git pre-push hooks
...th pre-commit hooks. Apart from protecting a branch, they can also provide extra security combined with pre-commit hooks.
And for an example on how to use (taken and adopted and enhanced from this nice entry)
Simple example to login to vagrant, run tests and then push
#!/bin/bash
# Run the follo...
How to capture stdout output from a Python function call?
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Try this context manager:
from io import StringIO
import sys
class Capturing(list):
def __enter__(self):
self._stdout = sys.stdout
sys.stdout = self._stringio = StringIO()
return self
def __exit__(self, *args):
self.extend(s...
Convert Python dictionary to JSON array
... means of unambiguously encoding a sequence of arbitrary bytes as an ASCII string - such as base64.
>>> import json
>>> from base64 import b64encode, b64decode
>>> my_dict = {'LeafTemps': '\xff\xff\xff\xff',}
>>> my_dict['LeafTemps'] = b64encode(my_dict['LeafTem...
Text-align class for inside a table
...gt;
<p class="text-xl-left">Left aligned text on viewports sized XL (extra-large) or wider.</p>
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Add a default value to a column through a migration
..., since change_column is irreversible.
Instead, though it may be a couple extra lines, you should use def up and def down
So if you have a column with no default value, then you should do this to add a default value.
def up
change_column :users, :admin, :boolean, default: false
end
def down
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sed error: “invalid reference \1 on `s' command's RHS”
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Sorry. The edit raises the error: sed: -e expression #7, char 58: Invalid range end. @Denis' answer works.
– JJD
May 19 '13 at 18:29
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Setting Environment Variables for Node to retrieve
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If you are looking for extra safety then github.com/rolodato/dotenv-safe and a few tests should do it.
– ctrlplusb
Jan 13 '16 at 23:35
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Correct way to pass multiple values for same parameter name in GET request
...ndard. To support that information, have a look at wikipedia, in the Query String chapter. There is the following comment:
While there is no definitive standard, most web frameworks allow
multiple values to be associated with a single field.[3][4]
Furthermore, when you take a look at the RFC...