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Direct casting vs 'as' operator?
...have to use the straight cast - the as won't work.
In the special case of converting to a string, every object has a ToString, so your third method may be okay if o isn't null and you think the ToString method might do what you want.
...
Get list of all routes defined in the Flask app
... need to combine it with other answers above.
Rule's repr() takes care of converting the required arguments in the route.
def list_routes():
routes = []
for rule in app.url_map.iter_rules():
routes.append('%s' % rule)
return routes
The same thing using a list comprehension:...
How do I copy a string to the clipboard on Windows using Python?
...
Get contents of clipboard: result = r.selection_get(selection = "CLIPBOARD")
– majgis
Jul 13 '11 at 3:19
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NSUserDefaults - How to tell if a key exists
...ject, I set it as an object, as I could then test to see if it was nil:
//converting BOOL to an object so we can check on nil
[defaults setObject:@(_talkative) forKey:@"talkative"];
Then when I went to see if it existed, I used:
if ([defaults objectForKey:@"talkative"]!=nil )
{
Then I used t...
C# List to string with delimiter
Is there a function in C# to quickly convert some collection to string and separate values with delimiter?
2 Answers
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Does Ruby regular expression have a not match operator like “!~” in Perl?
...
It's a lower-level solution. It's not always easy to convert regexps this way. On the other hand, this solution doesn't depend on top-level programming language ;)
– Konstantin
Mar 21 '18 at 12:43
...
Primary key/foreign Key naming convention [closed]
...e the USING syntax in SQL to save some typing and some boilerplate noise:
SELECT name, address, amount
FROM employees JOIN payroll USING (employee_id)
Another argument in favor of convention #2 is that it's the way the relational model was designed.
The significance of each column is
part...
Capybara Ambiguity Resolution
...t
So it's adviced to choose another, less ambiguous locator: for example select element by id, class or other css/xpath locator so that only one element will match it.
As a note here are some locators that I usually consider useful when resolving ambiguity:
find('ul > li:first-child')
It'...
How do I clone a single branch in Git?
...ore useful than it makes out?".
"Undoing" a shallow clone is detailed at "Convert shallow clone to full clone" (git 1.8.3+)
# unshallow the current branch
git fetch --unshallow
# for getting back all the branches (see Peter Cordes' comment)
git config remote.origin.fetch refs/heads/*:refs/remotes/...
Excel “External table is not in the expected format.”
...e same problem. which as resolved using these steps:
1.) Click File
2.) Select "save as"
3.) Click on drop down (Save as type)
4.) Select Excel 97-2003 Workbook
5.) Click on Save button
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