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npm command to uninstall or prune unused packages in Node.js
Is there a way to simply uninstall all unused (undeclared) dependencies from a Node.js project (ones that are no longer defined in my package.json .) When I update my application I like to have the unreferenced packages removed automatically.
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What are some popular naming conventions for Unit Tests? [closed]
...t state is.
Specific about the expected behaviour.
What more do you need from a test name?
Contrary to Ray's answer I don't think the Test prefix is necessary. It's test code, we know that. If you need to do this to identify the code, then you have bigger problems, your test code should not be mi...
Why does this loop produce “warning: iteration 3u invokes undefined behavior” and output more than 4
... note
We know that the standard says undefined behavior is unpredictable from the note that come with the definition which says:
[ Note: Undefined behavior may be expected when this International
Standard omits any explicit definition of behavior or when a program
uses an erroneous constru...
EC2 instance types's exact network performance?
...(!!!)
t2.large = ~500 MBit/s
c3.large = ~500-570 Mbit/s (different results from different sources)
c4.large = ~520 MBit/s (I've confirmed this independently, by the way)
m3.large is better at ~700 MBit/s
m4.large is ~445 Mbit/s
r3.large is ~390 Mbit/s
Burstable (T2) instances appear to exhibit bur...
Is it valid to replace http:// with // in a ?
...ve URIs (Section 5.2), you can omit any of those sections, always starting from the left. In pseudo-code, it looks like this:
result = ""
if defined(scheme) then
append scheme to result;
append ":" to result;
endif;
if defined(authority) then
append "//" to result;
appe...
What is the worst real-world macros/pre-processor abuse you've ever come across?
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From memory, it looked something like this:
#define RETURN(result) return (result);}
int myfunction1(args) {
int x = 0;
// do something
RETURN(x)
int myfunction2(args) {
int y = 0;
// do something
R...
Display image as grayscale using matplotlib
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The following code will load an image from a file image.png and will display it as grayscale.
import numpy as np
import matplotlib.pyplot as plt
from PIL import Image
fname = 'image.png'
image = Image.open(fname).convert("L")
arr = np.asarray(image)
plt.imshow(...
Typedef function pointer?
...sion about the entanglement of the alias and name. I learned something new from reading this post.
– Mad Physicist
Apr 7 '15 at 20:51
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RSA Public Key format
...
You can't just change the delimiters from ---- BEGIN SSH2 PUBLIC KEY ---- to -----BEGIN RSA PUBLIC KEY----- and expect that it will be sufficient to convert from one format to another (which is what you've done in your example).
This article has a good explanat...
Understanding typedefs for function pointers in C
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Consider the signal() function from the C standard:
extern void (*signal(int, void(*)(int)))(int);
Perfectly obscurely obvious - it's a function that takes two arguments, an integer and a pointer to a function that takes an integer as an argument and retu...