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How to make a valid Windows filename from an arbitrary string?
...
Try something like this:
string fileName = "something";
foreach (char c in System.IO.Path.GetInvalidFileNameChars())
{
fileName = fileName.Replace(c, '_');
}
Edit:
Since GetInvalidFileNameChars() will return 10 or 15 chars, it's better to use a StringBuilder instead of a simp...
MySQL, Check if a column exists in a table with SQL
...
This works well for me.
SHOW COLUMNS FROM `table` LIKE 'fieldname';
With PHP it would be something like...
$result = mysql_query("SHOW COLUMNS FROM `table` LIKE 'fieldname'");
$exists = (mysql_num_rows($result))?TRUE:FALSE;
...
Pad a number with leading zeros in JavaScript [duplicate]
...rray instance methods skip array elements without values, .join() doesn't, or at least not completely; it treats them as if their value is the empty string. Thus you get a copy of the zero character (or whatever "z" is) between each of the array elements; that's why there's a + 1 in there.
Example ...
How to get the current time as datetime
...
Update for Swift 3:
let date = Date()
let calendar = Calendar.current
let hour = calendar.component(.hour, from: date)
let minutes = calendar.component(.minute, from: date)
I do this:
let date = NSDate()
let calendar = NSCalend...
Easiest way to open a download window without navigating away from the page
...:attachment in the headers) without navigating away from the current page, or opening popups, which doesn't work well in Internet Explorer(IE) 6.
...
jQuery - Trigger event when an element is removed from the DOM
...Div").on("remove", function () {
alert("Element was removed");
})
Important: This is functionality of Jquery UI script (not JQuery), so you have to load both scripts (jquery and jquery-ui) to make it work. Here is example: http://jsfiddle.net/72RTz/
...
How to force file download with PHP
... I mean if its other than .exe file than only .Else this should work fine.
– Pit Digger
Aug 31 '11 at 22:02
7
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What's the difference between StaticResource and DynamicResource in WPF?
...nd assigned to the property during the loading of the XAML which occurs before the application is actually run. It will only be assigned once and any changes to resource dictionary ignored.
A DynamicResource assigns an Expression object to the property during loading but does not actually lookup th...
ISO time (ISO 8601) in Python
...
Local to ISO 8601:
import datetime
datetime.datetime.now().isoformat()
>>> 2020-03-20T14:28:23.382748
UTC to ISO 8601:
import datetime
datetime.datetime.utcnow().isoformat()
>>> 2020-03-20T01:30:08.180856
Local to ISO 8601...
Find the nth occurrence of substring in a string
....
Here's an alternative with string-splitting, which can often be useful for finding-related processes:
def findnth(haystack, needle, n):
parts= haystack.split(needle, n+1)
if len(parts)<=n+1:
return -1
return len(haystack)-len(parts[-1])-len(needle)
And here's a quick (an...