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How do you test functions and closures for equality?
...abstraction
thunks that adjust the actual signature of a function to the one the
function type expects.
https://devforums.apple.com/message/1035180#1035180
This means that you should not even try to compare closures for equality because optimizations may affect the outcome.
...
How do I activate C++ 11 in CMake?
...re to simply not work (not add any compiler flags). Make sure that you do one of the following things:
Use cmake_minimum_required to require CMake 3.0 or later, or
Set policy CMP0025 to NEW with the following code at the top of your CMakeLists.txt file before the project command:
# Fix behavior ...
How do I create a dynamic key to be added to a JavaScript object variable [duplicate]
...s are objects, but not all objects are arrays. The primary difference (and one that's pretty hard to mimic with straight JavaScript and plain objects) is that array instances maintain the length property so that it reflects one plus the numeric value of the property whose name is numeric and whose v...
All Ruby tests raising: undefined method `authenticate' for nil:NilClass
...
in RSpec
as Jeffrey W. mentioned, in his answer above -> to set this to all controllers:
RSpec.configure do |config|
# ...
config.include Devise::TestHelpers, type: :controller
# ...
end
however, if this is relevant to just one spec, you don...
hexadecimal string to byte array in python
...
If anyone is looking for hex string -> bytes object, it's ` bytes.fromhex("000102030405060708090A0B0C0D0E0F")` which yields b'\x00\x01\x02\x03\x04\x05\x06\x07\x08\t\n\x0b\x0c\r\x0e\x0f'. Not posting as an answer since question a...
How to get the Android device's primary e-mail address
...be
// a primary email address if the user hasn't specified one.
ContactsContract.Contacts.Data.IS_PRIMARY + " DESC");
}
@Override
public void onLoadFinished(Loader<Cursor> cursorLoader, Cursor cursor) {
List<String> emails = new ArrayL...
How many concurrent AJAX (XmlHttpRequest) requests are allowed in popular browsers?
...mlHttpRequest (on any tab) to the same domain is fired, it is queued until one of the other 6 finish.
8 Answers
...
Use JNI instead of JNA to call native code?
...d a jni wrapper
If you need a lot of memory copying. For example, you call one method which returns you a large byte buffer, you change something in it, then you need to call another method which uses this byte buffer. This would require you to copy this buffer from c to java, then copy it back from...
Update value of a nested dictionary of varying depth
...idea, i.e. a recursive solution, but somewhat peculiar coding and at least one bug. I'd recommend, instead:
Python 2:
import collections
def update(d, u):
for k, v in u.iteritems():
if isinstance(v, collections.Mapping):
d[k] = update(d.get(k, {}), v)
else:
...
How to understand Locality Sensitive Hashing?
...d a question about the cosine. The presentation says that the bit value is one if the dot product between the actual vector and the plane vector >= 0 or else it is 0. What is the direction of the plane vector because angles between 90 degrees and 180 degrees also will give a cosine which is negat...