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Why is there huge performance hit in 2048x2048 versus 2047x2047 array multiplication?
...umber of cache lines in your cache. L is always power of 2.
The six comes from fact that 2^6 == 64 bytes is standard size of cache line.
Now what does this mean? Well it means that if I have address X and address Y and
(X >> 6) - (Y >> 6) is divisible by L (i.e. some large power of 2)...
Local dependency in package.json
...pecify local Node module installation paths in your package.json directly. From the docs:
Local Paths
As of version 2.0.0 you can provide a path to a local directory that contains a package. Local paths can be saved using npm install -S or npm install --save, using any of these forms:
../foo/bar
~/...
Is memcached a dinosaur in comparison to Redis? [closed]
... excellent tool still and VERY reliable.
instead of looking at this issue from the perspective getting down the who is faster at the < 100 ms range, look at the performance per "class" of the software.
Does it use only local ram? -> fastest
Does it use remote ram? -> fast
Does it use ram...
How to retrieve the hash for the current commit in Git?
... length to --short, such as --short=12, to get a specific number of digits from the hash.
– Tyson Phalp
Feb 21 '14 at 17:18
35
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Only using @JsonIgnore during serialization, but not deserialization
I have a user object that is sent to and from the server. When I send out the user object, I don't want to send the hashed password to the client. So, I added @JsonIgnore on the password property, but this also blocks it from being deserialized into the password that makes it hard to sign up users...
Forward host port to docker container
...7.42.1). After that, you should be able to open connections to 172.17.42.1 from within your containers.
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How to use a decimal range() step value?
...r is likely to give you a wrong result.
You can use the linspace function from the NumPy library (which isn't part of the standard library but is relatively easy to obtain). linspace takes a number of points to return, and also lets you specify whether or not to include the right endpoint:
>>...
Should I always use a parallel stream when possible?
...ctions as streams, and just as easy to use a parallel stream. Two examples from the docs , the second one using parallelStream:
...
Null check in an enhanced for loop
...
You should better verify where you get that list from.
An empty list is all you need, because an empty list won't fail.
If you get this list from somewhere else and don't know if it is ok or not you could create a utility method and use it like this:
for( Object o : saf...
Should Javadoc comments be added to the implementation?
...y serves as a noise in the code. All sensible tools inherit method javadoc from the superclass or interface as specified here:
Inherit from classes and interfaces - Inheriting of comments occurs in all
three possible cases of inheritance from classes and interfaces:
- When a method in a class over...