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How do you check if a certain index exists in a table?
...bvious) effect is that it will alway re-create the index. This may not be what you want. Dropping and Creating an index on a large table is an expensive operation - esp if the existing index is already the one you want. This statement is good for one-step replacement. It doesn't compare the exi...
How to check if a process is running via a batch script
...I /N "myapp.exe" >NUL The first NUL seems unnecessary, I have no idea what the '2' is for, the /NH is optional.
– Jan Doggen
Nov 8 '13 at 9:17
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Naming conventions for abstract classes
... when the abstract class is predominantly used like an interface. Probably what they mean by Public API.
The point is that there are cases where there is no better alternative to using the Base suffix.
share
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Python: json.loads returns items prefixing with 'u'
...the repr of the data includes the prefix to indicate that. It's not about what the contents happen to be, it's about the type. The u prefix is fine if you are pasting the contents back into a Python program. If not, perhaps you want to use json.dumps() instead.
– Ned Batchel...
Get difference between two lists
...Drewdin: Lists do not support the "-" operand. Sets, however, do, and that what is demonstrated above if you look closely.
– Godsmith
Oct 14 '14 at 21:21
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Working with huge files in VIM
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Thanks @Steeve McCauley! Nice work. Exactly what I was looking for when searching for the answer to this question.
– Nate Ritter
Jul 7 '16 at 4:37
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When and why will a compiler initialise memory to 0xCD, 0xDD, etc. on malloc/free/new/delete?
...etimes initialize memory with certain patterns such as 0xCD and 0xDD . What I want to know is when and why this happens.
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Programmatically shut down Spring Boot application
...lication.(appContext, () -> returnCode); why can't appContext.close(). what is the difference ?
– Rams
Dec 11 '19 at 9:53
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window.location.reload with clear cache [duplicate]
...realize you wanted to programmatically erase the cache and not every time. What you could do is have a function in JS like:
eraseCache(){
window.location = window.location.href+'?eraseCache=true';
}
Then, in PHP let's say, you do something like this:
<head>
<?php
if (isset($_GET['...
Total number of items defined in an enum
....
enum MyEnum
{
A = 1,
B = 2,
C = 1,
D = 3,
E = 2
}
What is the number of "items" defined in MyEnum?
Is the number of items 5? (A, B, C, D, E)
Or is it 3? (1, 2, 3)
The number of names defined in MyEnum (5) can be computed as follows.
var namesCount = Enum.GetNames(typeof(...