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Viewing a Deleted File in Git
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git show HEAD^:path/to/file
You can use an explicit commit identifier or HEAD~n to see older versions or if there has been more than one commit since you deleted it.
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Adding data attribute to DOM
...o', '222');
Note that this doesn't create an actual data-info attribute. If you need to create the attribute, use .attr():
$('div').attr('data-info', '222');
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Django template how to look up a dictionary value with a variable
...ue in a Django template is {{ mydict.key1 }} , {{ mydict.key2 }} . What if the key is a loop variable? ie:
8 Answers
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How to benchmark efficiency of PHP script
... to know what is the best way to benchmark my PHP scripts. Does not matter if a cron job, or webpage or web service.
9 Answ...
How to do something before on submit? [closed]
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If you have a form as such:
<form id="myform">
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</form>
You can use the following jQuery code to do something before the form is submitted:
$('#myform').submit(function() {
// DO STUFF...
return tru...
Read values into a shell variable from a pipe
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Use
IFS= read var << EOF
$(foo)
EOF
You can trick read into accepting from a pipe like this:
echo "hello world" | { read test; echo test=$test; }
or even write a function like this:
read_from_pipe() { read "$@" <&a...
Use rvmrc or ruby-version file to set a project gemset with RVM?
I use RVM, the Ruby Version Manager to specify a Ruby version and a set of gems for each of my Rails projects.
5 Answers
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What is the best way to use a HashMap in C++?
...rgv)
{
std::map<std::string, int> m;
m["hello"] = 23;
// check if key is present
if (m.find("world") != m.end())
std::cout << "map contains key world!\n";
// retrieve
std::cout << m["hello"] << '\n';
std::map<std::string, int>::iterator i = m.find("hel...
How to change plot background color?
...fig.add_subplot(1, 1, 1) # nrows, ncols, index
You used the stateful API (if you're doing anything more than a few lines, and especially if you have multiple plots, the object-oriented methods above make life easier because you can refer to specific figures, plot on certain axes, and customize eith...
VIM ctrlp.vim plugin: how to rescan files?
...and hit F5 to refresh right then. It will automatically show you the match if the file was just added to the ctrl-p cache.
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