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Get MD5 hash of big files in Python
... Since you're not reading the entire file into memory, this won't use much more than 8192 bytes of memory.
In Python 3.8+ you can do
import hashlib
with open("your_filename.txt", "rb") as f:
file_hash = hashlib.md5()
while chunk := f.read(8192):
file_hash.update(chunk)
print(file_h...
do {…} while(false)
...
It's more than a disguised goto. It is a restricted (structured) goto.
– Thomas Eding
Feb 22 '10 at 20:56
...
MySQL vs MongoDB 1000 reads
... largely because MongoDB allows you to query in a different manner that is more sensible to your workload.
For example, consider a design that persisted a lot of information about a complicated entity in a normalised fashion. This could easily use dozens of tables in MySQL (or any relational db) to...
Is the sizeof(some pointer) always equal to four?
...ve a normal "NEAR" pointer was 16 bits and a pointer declared as "FAR" was more, probably 24, though I'm not sure.
– rmeador
Dec 29 '08 at 23:22
19
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How do I check if a string is a number (float)?
... don't think that the code is perfect (but I think it's very close): it is more usual to put only the part being "tested" in the try clause, so I would put the return True in an else clause of the try. One of the reasons is that with the code in the question, if I had to review it, I would have to ...
Vertically align text to top within a UILabel
...abel sizeToFit];
If you have a label with longer text that will make more than one line, set numberOfLines to 0 (zero here means an unlimited number of lines).
myLabel.numberOfLines = 0;
[myLabel sizeToFit];
Longer Version
I'll make my label in code so that you can see what's g...
The smallest difference between 2 Angles
... = targetA - sourceA
a += (a>180) ? -360 : (a<-180) ? 360 : 0
In a more verbose way:
a = targetA - sourceA
a -= 360 if a > 180
a += 360 if a < -180
share
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improve this answer
...
How to estimate how much memory a Pandas' DataFrame will need?
...y_usage(index=True).sum()
731731000
Also, passing deep=True will enable a more accurate memory usage report, that accounts for the full usage of the contained objects.
This is because memory usage does not include memory consumed by elements that are not components of the array if deep=False (defau...
Automatically enter SSH password with script
...
I've added an answer with a more secure usage of sshpass.
– Ian
Nov 20 '17 at 17:08
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show 10...
Aren't promises just callbacks?
...ite asynchronous code in a way that resembles synchronous code and is much more easy to follow:
api().then(function(result){
return api2();
}).then(function(result2){
return api3();
}).then(function(result3){
// do work
});
Certainly, not much less code, but much more readable.
But...