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What is the apply function in Scala?
... compose method on f and chaining two different functions together:
val f2 = f.compose((x:Int) => x - 1)
Now if we want to actually execute the function, or as mathematician say "apply a function to its arguments" we would call the apply method on the Function1[Int,Int] object:
f2.apply(2)
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What's the purpose of the LEA instruction?
... already in EBX, and variable i is in EAX, and xcoord and ycoord are each 32 bits (so ycoord is at offset 4 bytes in the struct), this statement can be compiled to:
MOV EDX, [EBX + 8*EAX + 4] ; right side is "effective address"
which will land y in EDX. The scale factor of 8 is because each Po...
How can I make a multipart/form-data POST request using Java?
..., making a multipart/form-data POST request was possible ( an example from 2004 ). Unfortunately this is no longer possible in version 4.0 of HttpClient .
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set the width of select2 input (through Angular-ui directive)
I have problem making this plunkr (select2 + angulat-ui) work.
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How to use PyCharm to debug Scrapy projects
I am working on Scrapy 0.20 with Python 2.7. I found PyCharm has a good Python debugger. I want to test my Scrapy spiders using it. Anyone knows how to do that please?
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How do i put a border on my grid in WPF?
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If you just want an outer border, the easiest way is to put it in a Border control:
<Borde...
How to get current CPU and RAM usage in Python?
...ports Linux, Windows, OSX, Sun Solaris, FreeBSD, OpenBSD and NetBSD, both 32-bit and 64-bit architectures, with Python versions from 2.6 to 3.5 (users of Python 2.4 and 2.5 may use 2.1.3 version).
Some examples:
#!/usr/bin/env python
import psutil
# gives a single float value
psutil.cpu_percent()
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Which is the preferred way to concatenate a string in Python?
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12 Answers
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Superscript in markdown (Github flavored)?
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2 Answers
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Using vagrant to run virtual machines with desktop environment
...ld you start the GUI as the vagrant user, with $ startxfce4&.
Update 2: Tried this today and the VBoxClient-all script isn't always installed. If it's missing, you can replace with the equivalent:
sudo VBoxClient --clipboard
sudo VBoxClient --draganddrop
sudo VBoxClient --display
sudo VBoxCli...