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What's the difference between deque and list STL containers?
...ue because list needed more calls to new/delete. That will obviously vary based on which STL implementation you have.
– Andy Krouwel
Jun 15 '17 at 7:22
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Installing Python 3 on RHEL
...ded a comment for that. It's the best I found. If you want to stick to RPM-based installation, you should use IUS repositories for CentOS 7. They provide a python34u-pip.
– Samuel Phan
Oct 1 '15 at 21:11
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How to use OpenSSL to encrypt/decrypt files?
... enc -ciphername [-in filename] [-out filename] [-pass arg]
[-e] [-d] [-a/-base64] [-A] [-k password] [-kfile filename]
[-K key] [-iv IV] [-S salt] [-salt] [-nosalt] [-z] [-md] [-p] [-P]
[-bufsize number] [-nopad] [-debug] [-none] [-engine id]
Explanation of most useful parameters with regards t...
Real differences between “java -server” and “java -client”?
...tions. These two solutions share the Java HotSpot runtime environment code base, but use different compilers that are suited to the distinctly unique performance characteristics of clients and servers. These differences include the compilation inlining policy and heap defaults.
Although the Server a...
node.js hash string?
...a) {
return crypto.createHash("sha256").update(data, "binary").digest("base64");
// ------ binary: hash the byte string
}
sha256("string or binary");
Documentation:
crypto.createHash(algorithm[, options]): The algorithm is dependent on the av...
How to write a large buffer into a binary file in C++, fast?
...
std::vector<uint64_t> data = GenerateData(bytes);
std::ios_base::sync_with_stdio(false);
auto startTime = std::chrono::high_resolution_clock::now();
auto myfile = std::fstream("file.binary", std::ios::out | std::ios::binary);
myfile.write((char*)&data[0], bytes);
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How do you calculate log base 2 in Java for integers?
I use the following function to calculate log base 2 for integers:
10 Answers
10
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Converting between datetime, Timestamp and datetime64
How do I convert a numpy.datetime64 object to a datetime.datetime (or Timestamp )?
12 Answers
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What column type/length should I use for storing a Bcrypt hashed password in a Database?
I want to store a hashed password (using BCrypt) in a database. What would be a good type for this, and which would be the correct length? Are passwords hashed with BCrypt always of same length?
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Retrieve list of tasks in a queue in Celery
...'re using Redis. To get the task counts:
redis-cli -h HOST -p PORT -n DATABASE_NUMBER llen QUEUE_NAME
But, prioritized tasks use a different key in redis, so the full picture is slightly more complicated. The full picture is that you need to query redis for every priority of task. In python (and ...