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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...
How to call a function from a string stored in a variable?
I need to be able to call a function, but the function name is stored in a variable, is this possible? e.g:
16 Answers
...
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 ...
How to create a custom exception type in Java? [duplicate]
... // Constructor that accepts a message
public WordContainsException(String message)
{
super(message);
}
}
Usage:
try
{
if(word.contains(" "))
{
throw new WordContainsException();
}
}
catch(WordContainsException ex)
{
// Process message h...
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...
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...
Can I do a synchronous request with volley?
...
@tasomaniac Updated. This uses the JsonObjectRequest(String url, JSONObject jsonRequest, Listener<JSONObject> listener, ErrorListener errorlistener) constructor. RequestFuture<JSONObject> implements both the Listener<JSONObject> and ErrorListener interfaces, s...
Using NSPredicate to filter an NSArray based on NSDictionary keys
...ase- and diacritic-insensitive like.”) For a complete description of the string syntax and a list of all the operators available, see Predicate Format String Syntax.
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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...