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Rails 4 - passing variable to partial
...buyer } %>
<%= render "account", account: @buyer %>
# @account.to_partial_path returns 'accounts/account', so it can be used to replace:
# <%= render partial: "accounts/account", locals: { account: @account} %>
<%= render @account %>
# @posts is an array of Post instances, so ...
Sort array of objects by string property value
...ite your own comparison function:
function compare( a, b ) {
if ( a.last_nom < b.last_nom ){
return -1;
}
if ( a.last_nom > b.last_nom ){
return 1;
}
return 0;
}
objs.sort( compare );
Or inline (c/o Marco Demaio):
objs.sort((a,b) => (a.last_nom > b.last_nom) ? 1 :...
Signed to unsigned conversion in C - is it always safe?
...hort Answer
Your i will be converted to an unsigned integer by adding UINT_MAX + 1, then the addition will be carried out with the unsigned values, resulting in a large result (depending on the values of u and i).
Long Answer
According to the C99 Standard:
6.3.1.8 Usual arithmetic conversions...
How to change variables value while debugging with LLDB in Xcode?
...es a crash, breakpoint
hit or signal.
Examples:
expr my_struct->a = my_array[3]
expr -f bin -- (index * 8) + 5
expr char c[] = "foo"; c[0]
IMPORTANT NOTE: Because this command takes 'raw' input, if you use any command options you must use ' -- ' between the...
Unable to open project… cannot be opened because the project file cannot be parsed
...hing else... Ctrl-F for "===" to find the place.
– ck_
Oct 31 '12 at 17:22
this should be marked as the answer. Reall...
Start ssh-agent on login
...ph M. Reagle by way of Daniel Starin:
Add this following to your .bash_profile
SSH_ENV="$HOME/.ssh/agent-environment"
function start_agent {
echo "Initialising new SSH agent..."
/usr/bin/ssh-agent | sed 's/^echo/#echo/' > "${SSH_ENV}"
echo succeeded
chmod 600 "${SSH_ENV}"
...
Removing an item from a select box
...ect").removeOption(/^val/i);
- array $("#myselect").removeOption(["myselect_1", "myselect_2"]);
To remove all options, you can do $("#myselect").removeOption(/./);.
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...
invalid target release: 1.7
...
You need to set JAVA_HOME to your jdk7 home directory, for example on Microsoft Windows:
"C:\Program Files\Java\jdk1.7.0_40"
or on OS X:
/Library/Java/JavaVirtualMachines/jdk1.7.0_40.jdk/Contents/Home
...
How can I get useful error messages in PHP?
...is page in the PHP documentation for information on the 2 directives: error_reporting and display_errors. display_errors is probably the one you want to change. If you can't modify the php.ini, you can also add the following lines to an .htaccess file:
php_flag display_errors on
php_value e...
Can you attach Amazon EBS to multiple instances?
...ble to get an EBS volume attached to more than one instance, it would be a _REALLY_BAD_IDEA_. To quote Kekoa, "this is like using a hard drive in two computers at once"
Why is this a bad idea? ...
The reason you can't attach a volume to more than one instance is that EBS provides a "block storage...