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How do iOS Push Notifications work?
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Any idea what is the usage of the Device Token? Is it used for encrypting communication between the APNS server and the App or elsewhere?
– Mugen
Apr 27 '16 at 8:15
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How to avoid reinstalling packages when building Docker image for Python projects?
...king for in his use case but if your making a build server this is a great idea
– oden
Jan 2 '18 at 6:07
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Accessing a Shared File (UNC) From a Remote, Non-Trusted Domain With Credentials
... the local user account on the shared folder, but I get access denied. Any ideas on why this may be happening? thx.
– M3NTA7
May 4 '17 at 16:02
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Do sealed classes really offer performance Benefits?
...@Smilediver It can improve performance, but only if you have a bad JIT (no idea how good the .NET JITs are nowadays though - used to be quite bad in that regard). Hotspot for example will inline virtual calls and deoptimize later if necessary - hence you pay the additional overhead only if you actua...
I need to securely store a username and password in Python, what are my options?
...od place to start. It's described well in the Twelve Factor App. The basic idea is that your source code just pulls the password or other secrets from environment variables, and then you configure those environment variables on each system where you run the program. It might also be a nice touch if ...
What are type lambdas in Scala and what are their benefits?
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I'm running nightlies for Nika and I don't have the IDEA option described. Interestingly enough, there is an inspection for "Applied Type Lambda can be simplified."
– Randall Schulz
May 14 '12 at 22:44
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What part of Hindley-Milner do you not understand?
...yntax, while it may look complicated, is actually fairly simple. The basic idea comes from formal logic: the whole expression is an implication with the top half being the assumptions and the bottom half being the result. That is, if you know that the top expressions are true, you can conclude that ...
What is the difference between user and kernel modes in operating systems?
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ARM
In ARM, the rings are called Exception Levels instead, but the main ideas remain the same.
There exist 4 exception levels in ARMv8, commonly used as:
EL0: userland
EL1: kernel ("supervisor" in ARM terminology).
Entered with the svc instruction (SuperVisor Call), previously known as swi be...
How to create GUID / UUID?
...gets away OK even though they are signed). Finally it would be a very good idea these days to use window.crypto.getRandomValues if available, and fall-back to Math.random only if absolutely necessary. Math.random may well have less than 128 bits of entropy, in which case this would be more vulnerabl...
Redis strings vs Redis hashes to represent JSON: efficiency?
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Option 1 is not a good idea if concurrent modification of the JSON payload is expected (a classic problem of non-atomic read-modify-write).
– Samveen
Aug 23 '16 at 13:16
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