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Execute command on all files in a directory
...ail if there are no files present in the directory and an un-expanded glob string will be passed to the command to be run, which could have undesirable results. The bash shell provides an extended shell option for this using nullglob. So the loop basically becomes as follows inside the directory con...
Set attribute without value
...e attr() function is also a setter function. You can just pass it an empty string.
$('body').attr('data-body','');
An empty string will simply create the attribute with no value.
<body data-body>
Reference - http://api.jquery.com/attr/#attr-attributeName-value
attr( attributeName...
POST JSON fails with 415 Unsupported media type, Spring 3 mvc
...ication/json'
},
'type': 'POST',
'url': url,
'data': JSON.stringify(data),
'dataType': 'json',
'success': callback
});
};
The Content-Type header is used by @RequestBody to determine what format the data being sent from the client in the request is. The accept header i...
How to write a JSON file in C#?
...a.Add(new data()
{
Id = 1,
SSN = 2,
Message = "A Message"
});
string json = JsonConvert.SerializeObject(_data.ToArray());
//write string to file
System.IO.File.WriteAllText(@"D:\path.txt", json);
Or the slightly more efficient version of the above code (doesn't use a string as a buff...
Using sed to mass rename files
... the rest of the filename, which can be referenced by \2.
The replacement string puts it all together using & (the original
filename) and \1\2 which is every part of the filename except the 2nd
character, which was a 0.
This is a pretty cryptic way to do this, IMHO. If for
some reason the ren...
Add line break to 'git commit -m' from the command line
...$'first line\nsecond line'
From the Bash manual:
Words of the form $'string' are treated specially. The word expands to
string, with backslash-escaped characters replaced as specified by the
ANSI C standard.
This includes support for newlines as shown above, plus hex and Unicode codes an...
Most efficient way to store thousand telephone numbers
...
In what follows, I treat the numbers as integer variables (as opposed to strings):
Sort the numbers.
Split each number into the first five digits and the last five digits.
The first five digits are the same across numbers, so store them just once. This will require 17 bits of storage.
Store the ...
ASP.NET MVC 3: Override “name” attribute with TextBoxFor
...
Try EditorFor. you can pass string as template name if you want to make sure textbox is rendered even if property type is not string. If property is string already, it does not need templatename explicitly to render textbox, so you can pass null. Note t...
How to pass a variable from Activity to Fragment, and pass it back?
...g data from Activity to a Fragment
Activity:
Bundle bundle = new Bundle();
String myMessage = "Stackoverflow is cool!";
bundle.putString("message", myMessage );
FragmentClass fragInfo = new FragmentClass();
fragInfo.setArguments(bundle);
transaction.replace(R.id.fragment_single, fragInfo);
transacti...
how to reference a YAML “setting” from elsewhere in the same YAML file?
...
Yes, using custom tags. Example in Python, making the !join tag join strings in an array:
import yaml
## define custom tag handler
def join(loader, node):
seq = loader.construct_sequence(node)
return ''.join([str(i) for i in seq])
## register the tag handler
yaml.add_constructor('!j...