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Hidden features of Ruby
...
From Ruby 1.9 Proc#=== is an alias to Proc#call, which means Proc objects can be used in case statements like so:
def multiple_of(factor)
Proc.new{|product| product.modulo(factor).zero?}
end
case number
when multiple_of...
Set NOW() as Default Value for datetime datatype?
...ysql.com/doc/refman/5.1/en/create-table.html
If you want to prevent MySQL from updating the timestamp value on UPDATE (so that it only triggers on INSERT) you can change the definition to:
CREATE TABLE mytable (
mydate TIMESTAMP DEFAULT CURRENT_TIMESTAMP
)
...
VIM ctrlp.vim plugin: how to rescan files?
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From the documentation:
<F5>
- Refresh the match window and purge the cache for the current directory.
- Remove deleted files from MRU list.
This assumes you're in ctrl-p mode already. Note that you can hit F5 in...
Why would one use the Publish/Subscribe pattern (in JS/jQuery)?
...ent, the View catches it and updates itself. You don’t have any overhead from the publish/subscribe, it helps you for the decoupling. In the same manner you can keep your application logic in the Controller for example (MVVM, MVP it’s not exactly a Controller) and keep the View as simple as poss...
Are C++ enums signed or unsigned?
...3 Enum type is a distinct type of its own having no concept of sign. Since from C++03 standard dcl.enum
7.2 Enumeration declarations
5 Each enumeration defines a type that is different from all other types....
So when we are talking about the sign of an enum type, say when comparing 2 enum opera...
Why am I seeing an “origin is not allowed by Access-Control-Allow-Origin” error here? [duplicate]
...pt tag into the head part of your html (you know that you can load scripts from different domains than yours here).
However, to use jsonp the server must be configured properly. If this is not the case you cannot use jsonp and you MUST rely on a server side proxy (PHP, ASP, etc.). There are plenty o...
Open application after clicking on Notification
...iya (Android Developer)",
"This is Message from Dipak Keshariya (Android Developer)");
}
}, 0);
}
});
}
// Notification Function
private void Notification(String notificationTitle,
String...
How to effectively work with multiple files in Vim
... Note also that you can use the -p flag to open multiple files in tabs from the command line. For example, gvim -p main.pl maintenance.pl will open these two files in tabs.
– Matthew Strawbridge
Nov 25 '12 at 10:06
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How do I check the difference, in seconds, between two dates?
... @Nickpick the value is not always positive. e.g. the following is -60: from datetime import datetime; (datetime(2019, 1, 1, 0, 0) - datetime(2019, 1, 1, 0, 1)).total_seconds()
– JDiMatteo
Jan 2 '19 at 2:06
...
How to use Java property files?
...h it as you'd iterate through a normal Hashtable (which Properties derives from), e.g. using keySet(). Alternatively, you can use the enumeration returned by propertyNames().
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