banthar

6 ms·

1.
by banthar 1y ago
Python context managers somewhat require it. You have to create an object on which you can call `__enter__`.
2.
by banthar 2y ago
You can make globals thread safe by using thread locals. You can make methods using them reentrant by carefully saving and restoring state. What about exceptions? Any exception from `process()` is going to leave this global state in a total
3.
by banthar 3y ago
100% agree with the AI on @cache decorator. It's a footgun and should never be recommended without a proper disclaimer. Unless it's a simple "single shoot" script, you really do not want the cache global like that.
4.
by banthar 3y ago
Zotero Flatpak comes with 4 year old Firefox binary and full access to your home directory. The compromise currently being made here is your security.
5.
by banthar 3y ago
This is how all undefined behavior works. It seems to be working now but breaks with new CPU, GCC version or on wrong moon phase. "-Wcast-align=strict" will work in this but not all cases - that's why we have UBSAN: $ g
6.
by banthar 3y ago
You can pin your JVM process to a single core and will effectively get Python multithreading model.
7.
by banthar 6y ago
Defining string as a sequence of unicode codepoints is the mistake. Nobody ever cares about unicode codepoints. You either want the number of bytes or the width of the string on screen. UTF-32 codepoints waste space and give you neither.
8.
by banthar 6y ago
Object oriented programming is not about defining classes. It's about using objects. You don't have to define new classes to do OOP. Just use existing classes and objects polymorphically! url_layout.format() resp.raise_f
9.
by banthar 6y ago
First issue mentioned: CVE-2019-6111 is an example of such attack.
10.
by banthar 6y ago
The problem with scp is that the trust also needs to go the other way. There is a lot of ways ssh server can trick the client into doing bad things on your local machine.
11.
by banthar 6y ago
Mocks have to be updated and fixed every time you do any meaningful changes in production code. Good fake can be reused in many tests and will keep behaving like a real thing with minimum maintenance. Much less complex than maintaining hund
12.
by banthar 6y ago
Extra bytes at end of file will be ignored by most formats. You generally don't want to depend on file length.
13.
by banthar 6y ago
There is nothing you can do with text file with unknown encoding but treat it as an array of bytes. If you start guessing the encoding, at best it won't work in some cases, at worst you are introducing security vulnerabilities. You can
14.
by banthar 7y ago
MPEG4 the video codec is https://en.wikipedia.org/wiki/MPEG-4_Part_2 mp4 the media container is https://en.wikipedia.org/wiki/MPEG-4_Part_14 MPEG-2 part 4 is some conformance testing specification
15.
by banthar 8y ago
What kind of business is that? How are you funding it? 18000 euros is rather insignificant on business scale.
16.
by banthar 8y ago
> For example, under a proper UBI I’d quit my job and start a business. Under this time limited experiment I never would have. What business would you start that takes more than 2 years to validate but takes basically no funding?
17.
by banthar 8y ago
Constant expressions are evaluated at compile time. Compilation would suffer any eventual performance penalties. This probably makes the compiler simpler - no need to implement different arithmetic for different types & no need to guess
18.
by banthar 8y ago
If you do SCTP in user space with UDP encapsulation, most of its benefits disappear (and you have to do that - also because of Windows). It's standard only on paper. There is only one significant user space implementation (usrsctp). It
19.
by banthar 9y ago
PEP-393 is a stupid compromise. They couldn't choose between UCS-2 and UCS-4, so they are using both. They are wasting tons of CPU cycles converting between them and single character outside of range doubles the size of string. I don&#
20.
by banthar 9y ago
Even outside Web, you still have mostly-ASCII: * filenames * identifiers * config files * text protocols * host names, email addresses * embedded scripts (including SQL and OpenGL shaders) * command line interfaces * translations for langua
21.
by banthar 9y ago
I've used both LD_PRELOAD and Detours and I like LD_PRELOAD so much better. LD_PRELOAD just needs single standard shared library and one environment variable. With Detours you have to: inject code into executable, stop threads, worry a
22.
by banthar 10y ago
I'm guessing this mostly happens during serialization to and from strings. One programmer does String.valueOf(x) instead of x.toString() to prevent NullPointerExceptions. This works pretty well until the next guy does x == null || x.eq
23.
by banthar 10y ago
From: https://github.com/aosabook/500lines/blob/master/ci/code/hel... s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) s.connect((host, port)) s.send(request) response =
24.
by banthar 11y ago
Are you talking about changing source address in IP header? Most ISPs will drop such packets: https://tools.ietf.org/html/rfc3013#section-4.3
25.
by banthar 11y ago
That's onion -> web. If you are connecting to onion address, your packets do not enter plain text internet. Unless you are using some sort of "enter node".
26.
by banthar 11y ago
Isn't SSL on .onion domains redundant? It makes sense for onion -> open web, but shouldn't onion -> onion connections be already both authenticated and encrypted?
27.
by banthar 11y ago
Lets try an example. Extract first link address from https://news.ycombinator.com/ . As DOM query: document.getElementsByClassName("title")[0].parentElement.getElementsByTagName("a")[1].href This
28.
by banthar 11y ago
You can create immutable classes "by hand". Just make all fields final and either primitive or reference to immutable type. This framework just makes it a little bit shorter to type as it automatically generates some boilerplate c
29.
by banthar 11y ago
This is just what programmers do. They all have irresistible urge to write their own meta language on top of what they are using. C programmers do that with pre-processor. C++ programmers do that with templates and pre-processor. Java prog
30.
by banthar 11y ago
You can't. This is a GCC extension: https://gcc.gnu.org/onlinedocs/gcc/Labels-as-Values.html

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