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Understanding repr( ) function in Python
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Can you also let us know some use cases when one should use repr function. I am unable to comprehend that
– gaurav parashar
May 17 '19 at 12:22
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unique object identifier in javascript
I need to do some experiment and I need to know some kind of unique identifier for objects in javascript, so I can see if they are the same. I don't want to use equality operators, I need something like the id() function in python.
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Combining Multiple Commits Into One Prior To Push
...ne with. So it has to be picked or 'p'. Use 'Esc' to exit insert mode.
3) Now, save the editor with the following command.
:wq
When you save that, you have a single commit that introduces the changes of all three previous commits.
Hope this will help you.
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How do you detect where two line segments intersect? [closed]
...bering that s × r = − r × s):
u = (q − p) × r / (r × s)
Now there are four cases:
If r × s = 0 and (q − p) × r = 0, then the two lines are collinear.
In this case, express the endpoints of the second segment (q and q + s) in terms of the equation of the first li...
List all indexes on ElasticSearch server?
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@paweloque answer now looks like it's the correct solution; seems cleaner. curl http://localhost:9200/_stats/indexes\?pretty\=1
– notapatch
Mar 28 '14 at 12:09
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Update Eclipse with Android development tools v. 23
I updated Eclipse with the new SDK tools (rev. 23), but now when Eclipse starts I receive the error:
43 Answers
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Calling closure assigned to object property directly
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I know this is old, but I think Traits nicely handle this problem if you are using PHP 5.4+
First, create a trait that makes properties callable:
trait CallableProperty {
public function __call($method, $args) {
if...
How to redirect 404 errors to a page in ExpressJS?
I don't know a function for doing this, does anyone know of one?
22 Answers
22
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What is a “callable”?
Now that it's clear what a metaclass is , there is an associated concept that I use all the time without knowing what it really means.
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How to list all functions in a Python module?
...e you actually get a dict containing functionName:<function> and you now have the ability to CALL that function dynamically. good times!
– jsh
Jan 28 '11 at 21:31
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