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What's the difference between HEAD, working tree and index, in Git?
...y work into the index.
If this is the first change I've made since my last commit, then I can use the local repository as a checkpoint, but often I've got one conceptual change that I'm implementing as a set of little steps. I want to checkpoint after each step, but save the commit until I've gotten...
How to run a program without an operating system?
... an ELF file with a special header. They are specified by GRUB at: https://www.gnu.org/software/grub/manual/multiboot/multiboot.html
You can turn a multiboot file into a bootable disk with grub-mkrescue.
Firmware
In truth, your boot sector is not the first software that runs on the system's CPU.
Wha...
Convert dd-mm-yyyy string to date
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How to implement the activity stream in a social network
...d party service used via an API. I started one called Collabinate (http://www.collabinate.com) that has a graph database backend and some fairly sophisticated algorithms for handling large amounts of data in a highly concurrent, high performance manner. While it does not have the breadth of functi...
How to change font size in Eclipse for Java text editors?
...ese will override the top-level preferences.
Eclipse v4.2 (Juno) note
Per comment below, this has moved to the Eclipse Preferences menu (no longer named the Window menu).
Eclipse v4.3 (Kepler) note
The Window menu is live again, that is, menu Window → Preferences.
Note Be sure to check out the C...
Git repository broken after computer died
... blue screen of death on windows 8.1
I had a file in this location...
C:\www\<project>\.git\refs\remotes\origin\<problem-branch>
And it was empty whereas the other branch files in this folder has long strings inside of them.
NB I didn't have any changes/commits
I backed up the <...
Why wasn't PyPy included in standard Python?
...th=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 47.1084 7.58816C47.4091 7.46349 47.7169 7.36433 48.0099 7.26993C48.9099 6.97997 49.672 6.73443 49.672 5.93063C49.672 5.22043 48.9832 4...
How to use double or single brackets, parentheses, curly braces
...ired for (most/all?) array references on the right hand side.
ephemient's comment reminded me that parentheses are also used for subshells. And that they are used to create arrays.
array=(1 2 3)
echo ${array[1]}
2
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How to get the browser to navigate to URL in JavaScript [duplicate]
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Try these:
window.location.href = 'http://www.google.com';
window.location.assign("http://www.w3schools.com");
window.location = 'http://www.google.com';
For more see this link: other ways to reload the page with JavaScript
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Foreign Key to non-primary key
...th=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 47.1084 7.58816C47.4091 7.46349 47.7169 7.36433 48.0099 7.26993C48.9099 6.97997 49.672 6.73443 49.672 5.93063C49.672 5.22043 48.9832 4...