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What is the purpose of XORing a register with itself? [duplicate]
... recognizes the special case and treats it as a mov eax, 0 without a false read dependency on eax, so the execution time is the same.
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What is LDAP used for?
...ds or phonebooks. When you have a task that requires “write/update once, read/query many times”, you might consider using LDAP. LDAP is designed to provide extremely fast read/query performance for a large scale of dataset. Typically you want to store only a small piece of information for each e...
How to replace ${} placeholders in a text file?
...d is ${word}
File script.sh:
#!/bin/sh
#Set variables
i=1
word="dog"
#Read in template one line at the time, and replace variables (more
#natural (and efficient) way, thanks to Jonathan Leffler).
while read line
do
eval echo "$line"
done < "./template.txt"
Output:
#sh script.sh
the nu...
What are the git concepts of HEAD, master, origin?
...ole repository, or of a specific branch or tag? This is so confusing. I've read so many tutorials on this and things like branching/merging, but still can't wrap my head around it.
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How do you do a ‘Pause’ with PowerShell 2.0?
...offer a new variation that I believe provides the best utility.
<1> ReadKey (System.Console)
write-host "Press any key to continue..."
[void][System.Console]::ReadKey($true)
Advantage: Accepts any key but properly excludes Shift, Alt, Ctrl modifier keys.
Disadvantage: Does not work in PS-...
Effective method to hide email from spam bots
...ssue. So, I can't speak of how effective this method is. You might want to read this study (although it's old) that produced this graph:
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Tutorials and libraries for OpenGL-ES games on Android [closed]
... can play with and change to see what different parts do. Other than that reading OpenGL documentation, will help as well. I am not great at the OpenGL stuff, but have been able to figure things out using the resources I mentioned.
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Read-only and non-computed variable properties in Swift
...et's say I used to do something like the following in Objective-C. I have readonly properties, and they cannot be individually changed. However, using a specific method, the properties are changed in a logical way.
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Github: readonly access to a private repo
...the (relatively new) "Organizations" feature allows you to add people with read-only access to a private repository.
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Output array to CSV in Ruby
It's easy enough to read a CSV file into an array with Ruby but I can't find any good documentation on how to write an array into a CSV file. Can anyone tell me how to do this?
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