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List comprehension vs map
...in xs]'
100000 loops, best of 3: 5.58 usec per loop
An example of how performance comparison gets completely reversed when map needs a lambda:
$ python -mtimeit -s'xs=range(10)' 'map(lambda x: x+2, xs)'
100000 loops, best of 3: 4.24 usec per loop
$ python -mtimeit -s'xs=range(10)' '[x+2 for x in ...
How to return only the Date from a SQL Server DateTime datatype
...tdate()), 0)
SELECT DATEADD(yy, 0, DATEDIFF(yy, 0, getdate()))
Output:
2019-04-19 08:09:35.557
2019-04-19 08:00:00.000
4763-02-17 00:00:00.000
2019-04-19 00:00:00.000
2019-04-19 00:00:00.000
2019-04-01 00:00:00.000
1903-12-03 00:00:00.000
2019-01-01 00:00:00.000
1900-04-30 00:00:00.000
...
Populating a razor dropdownlist from a List in MVC
...
Inside the controller create a method to get your UserRole list and transform it into the form that will be presented in the view.
Controller:
private IEnumerable<SelectListItem> GetRoles()
{
var dbUserRoles = new DbUserRoles();
var roles = dbUserRoles
.GetRoles()
...
How to keep one variable constant with other one changing with row in excel
...
Use this form:
=(B0+4)/$A$0
The $ tells excel not to adjust that address while pasting the formula into new cells.
Since you are dragging across rows, you really only need to freeze the row part:
=(B0+4)/A$0
Keyboard Shortcut...
Python Nose Import Error
...s at all will result in Ran 0 tests, not any import error. In its present form this answer is not useful.
– gerrit
Feb 19 '19 at 10:08
...
how to convert an RGB image to numpy array?
... that would enable np.array to convert its underlying data into an ndarray format. You need to omit the use of img.load() and deal only with the result of Image.open(...).
– ely
May 5 '17 at 15:40
...
How to style readonly attribute with CSS?
... input:read-only is the "mutability pseudo-class aiming at making form styling easier based on disabled, readonly and contenteditable HTML Attributes" As mentioned here, css-tricks.com/almanac/selectors/r/read-write-read, various implementations are quite wonky.
– peat...
How to add a button to UINavigationBar?
...tate.
If you want to display one of the special symbolic buttons, use the form initWithBarButtonSystemItem:target:action with a value like UIBarButtonSystemItemAdd
Remember, the meaning of that symbol is up to you, but be careful of the Human Interface Guidelines. Using UIBarButtonSystemItemAdd t...
How can I have grep not print out 'No such file or directory' errors?
...by git, and whenever I do a grep, I see piles and piles of messages of the form:
9 Answers
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Is there any way to post events to Google Analytics via server-side API? [closed]
...st.Method = "POST";
myRequest.ContentType = "application/x-www-form-urlencoded";
myRequest.ContentLength = data.Length;
Stream newStream = myRequest.GetRequestStream();
newStream.Write(data, 0, data.Length);
newStream.Close();
}
...