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Appending to an existing string
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165
You can use << to append to a string in-place.
s = "foo"
old_id = s.object_id
s <<...
Why is transposing a matrix of 512x512 much slower than transposing a matrix of 513x513?
...ransposing a matrix of size 2^n is slower than transposing one of size 2^n+1 . For small values of n , the difference is not major.
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Failed to instantiate module [$injector:unpr] Unknown provider: $routeProvider
I received this error upon upgrading from AngularJS 1.0.7 to 1.2.0rc1 .
3 Answers
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How to convert a string to an integer in JavaScript?
... simplest way would be to use the native Number function:
var x = Number("1000")
If that doesn't work for you, then there are the parseInt, unary plus, parseFloat with floor, and Math.round methods.
parseInt:
var x = parseInt("1000", 10); // you want to use radix 10
// so you get a decimal ...
DESTDIR and PREFIX of make
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189
./configure --prefix=***
Number 1 determines where the package will go when it is install...
Why do we need argc while there is always a null at the end of argv?
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106
Yes, argv[argc]==NULL is guaranteed. See C11 5.1.2.2.1 Program startup (my emphasis)
If t...
Python module os.chmod(file, 664) does not change the permission to rw-rw-r— but -w--wx----
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130
Found this on a different forum
If you're wondering why that leading zero is important, it...
How do I use the includes method in lodash to check if an object is in the collection?
...s will work because there is only one instance of {"b": 2}:
var a = {"a": 1}, b = {"b": 2};
_.includes([a, b], b);
> true
On the other hand, the where(deprecated in v4) and find methods compare objects by their properties, so they don't require reference equality. As an alternative to includes...
Is it possible to set private property via reflection?
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t.GetProperty("CreatedOn")
.SetValue(obj, new DateTime(2009, 10, 14), null);
EDIT: Since the property itself is public, you apparently don't need to use BindingFlags.NonPublic to find it. Calling SetValue despite the the setter having less accessibility still does what you expect.
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RegEx to find two or more consecutive chars
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198
This should do the trick:
[a-zA-Z]{2,}
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