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Speed up the loop operation in R
...mething. (simple operation). The data.frame has roughly 850K rows. My PC is still working (about 10h now) and I have no idea about the runtime.
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Java - How to create new Entry (key, value)
... key;
private V value;
public MyEntry(K key, V value) {
this.key = key;
this.value = value;
}
@Override
public K getKey() {
return key;
}
@Override
public V getValue() {
return value;
}
@Override
public V setValue(V valu...
Difference between CTE and SubQuery?
From this post How to use ROW_NUMBER in the following procedure?
9 Answers
9
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Fastest method to replace all instances of a character in a string [duplicate]
What is the fastest way to replace all instances of a string/character in a string in JavaScript? A while , a for -loop, a regular expression?
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Locking a file in Python
...lright, so I ended up going with the code I wrote here, on my website link is dead, view on archive.org (also available on GitHub). I can use it in the following fashion:
from filelock import FileLock
with FileLock("myfile.txt.lock"):
print("Lock acquired.")
with open("myfile.txt"):
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RESTful way to create multiple items in one request
...working on a small client server program to collect orders. I want to do this in a "REST(ful) way".
7 Answers
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Apache Prefork vs Worker MPM
...king at the Apache config file, I see Prefork and Worker MPM defined. What is the difference and which one is Apache using?
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How do I choose grid and block dimensions for CUDA kernels?
This is a question about how to determine the CUDA grid, block and thread sizes. This is an additional question to the one posted here .
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What is the best project structure for a Python application? [closed]
...velop a non-trivial end-user desktop (not web) application in Python. What is the best way to structure the project's folder hierarchy?
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How does push notification technology work on Android?
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From what I've heard during an Android developers conference in Israel:
There is simply a TCP socket waiting in accept mode on a cloud Google server. The TCP connection had been initiated by the Google Play application. That's why Google Play must be installed on the device for making Go...