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How is a CRC32 checksum calculated?
...ikipedia
CRC calculation
Or in hex and binary:
0x 01 04 C1 1D B7
1 0000 0100 1100 0001 0001 1101 1011 0111
The highest term (x32) is usually not explicitly written, so it can instead be represented in hex just as
0x 04 C1 1D B7
Feel free to count the 1s and 0s, but you'll find they m...
Determining 32 vs 64 bit in C++
...the correct code.
I used this technique (among many others) to write a 30,000 line project that worked flawlessly from the day it was first deployed into production (that was 12 months ago).
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How can I get the sha1 hash of a string in node.js?
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Obligatory: SHA1 is broken, you can compute SHA1 collisions for 45,000 USD. You should use sha256:
var getSHA256ofJSON = function(input){
return crypto.createHash('sha256').update(JSON.stringify(input)).digest('hex')
}
To answer your question and make a SHA1 hash:
const INSECURE_ALG...
Replace a value if null or undefined in JavaScript
...at this doesn't work if 0 is a valid value of i.
– jt000
Feb 1 '15 at 17:40
14
If anything falsey...
Wait for a void async method
...diately before blah is wrong. Try "await Task.Run(() => Thread.Sleep(10_000))", the task is awaited for 10 seconds+ before executing any next line
– Rohit Sharma
Apr 24 at 10:18
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Google Maps JS API v3 - Simple Multiple Marker Example
...ake it unique. This example will be very helpful if you want to test 500, 1000, xxx markers and performance.
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List comprehension on a nested list?
...ke to keep elements per list to be 10 and vary number of lists from 10-100,000
>>> python -m timeit "[list(map(float,k)) for k in [list(range(0,10))]*10]"
>>> 100000 loops, best of 3: 15.2 usec per loop
>>> python -m timeit "[[float(y) for y in x] for x in [list(range(...
Which method performs better: .Any() vs .Count() > 0?
...ramework 4).
Here is query with Any that thew timeout exception (on ~200.000 records):
con = db.Contacts.
Where(a => a.CompanyId == companyId && a.ContactStatusId <= (int) Const.ContactStatusEnum.Reactivated
&& !a.NewsletterLogs.Any(b => b.NewsletterLogTypeId ...
Why no ICloneable?
... 'real world' that also does something other than implement it (in the ~60,000 apps that we have access to).
Now if you would just like to enforce a pattern that you want your 'cloneable' objects to implement, that's a completely fine usage - and go ahead. You can also decide on exactly what "cloni...
How do I get currency exchange rates via an API such as Google Finance? [closed]
...%22USDCHF%22%29
Open Source Exchange Rates API
Free for personal use (1000 hits per month)
Changing "base" (from "USD") is not allowed in Free account
Requires registration.
Request: http://openexchangerates.org/latest.json
Response:
<!-- language: lang-js -->
{
"disclaimer":...