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How to install the Raspberry Pi cross compiler on my Linux host machine?
...ls.git
You wanted to use the following of the 3 ones, gcc-linaro-arm-linux-gnueabihf-raspbian, if I did not read wrong.
Go into your home directory and add:
export PATH=$PATH:$HOME/raspberrypi/tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian/bin
to the end of the file named ~/.bashrc
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Apache Prefork vs Worker MPM
...tion at a time// here connection means single user or single request? pls explain
– user1844933
Jun 25 '19 at 7:18
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What is the easiest way to push an element to the beginning of the array?
...in use:
irb>> a = [ 0, 1, 2]
=> [0, 1, 2]
irb>> a.unshift('x')
=> ["x", 0, 1, 2]
irb>> a.inspect
=> "["x", 0, 1, 2]"
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Replace all non-alphanumeric characters in a string
...a standard character or number such as (a-z or 0-9) with an asterisk. For example, "h^&ell`.,|o w]{+orld" is replaced with "h*ell*o*w*orld". Note that multiple characters such as "^&" get replaced with one asterisk. How would I go about doing this?
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How can I add numbers in a Bash script?
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For integers:
Use arithmetic expansion: $((EXPR))
num=$((num1 + num2))
num=$(($num1 + $num2)) # Also works
num=$((num1 + 2 + 3)) # ...
num=$[num1+num2] # Old, deprecated arithmetic expression syntax
Using the external expr utili...
How to convert a color integer to a hex String in Android?
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The mask makes sure you only get RRGGBB, and the %06X gives you zero-padded hex (always 6 chars long):
String hexColor = String.format("#%06X", (0xFFFFFF & intColor));
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Fatal error: “No Target Architecture” in Visual Studio
... try to compile my c++ project using Visual Studio 2010 in either Win32 or x64 mode I get the following error:
11 Answers
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How do I revert all local changes in Git managed project to previous state?
..., do this:
git checkout .
If you want to revert changes made to the index (i.e., that you have added), do this. Warning this will reset all of your unpushed commits to master!:
git reset
If you want to revert a change that you have committed, do this:
git revert <commit 1> <commit 2&...
Access multiple elements of list knowing their index
I need to choose some elements from the given list, knowing their index. Let say I would like to create a new list, which contains element with index 1, 2, 5, from given list [-2, 1, 5, 3, 8, 5, 6]. What I did is:
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What are bitwise shift (bit-shift) operators and how do they work?
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The bit shifting operators do exactly what their name implies. They shift bits. Here's a brief (or not-so-brief) introduction to the different shift operators.
The Operators
>> is the arithmetic (or signed) right shift operator.
>>> is t...