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How can I use 'Not Like' operator in MongoDB
... can use $options => i for case of insensitive search.
Doesn't Contain string
db.collection.find({name:{'$regex' : '^((?!string).)*$', '$options' : 'i'}})
Exact case insensitive string
db.collection.find({name:{'$regex' : '^string$', '$options' : 'i'}})
Starts with string
db.collection.fi...
How to create directory automatically on SD card
...filename);
// now attach the OutputStream to the file object, instead of a String representation
FileOutputStream fos = new FileOutputStream(outputFile);
Note: It might be wise to use Environment.getExternalStorageDirectory() for getting the "SD Card" directory as this might change if a phone come...
sql “LIKE” equivalent in django query
..._contains or __icontains (case-insensitive):
result = table.objects.filter(string__contains='pattern')
The SQL equivalent is
SELECT ... WHERE string LIKE '%pattern%';
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How to detect if a variable is an array
...ternal [[Class]] property of the object. To get it, use Object.prototype.toString() (this is guaranteed to work by ECMA-262):
Object.prototype.toString.call(obj) === '[object Array]'
Both methods will only work for actual arrays and not array-like objects like the arguments object or node lists. ...
How do I get Month and Date of JavaScript in 2 digit format?
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@KasperHoldum–getMonth and getDate return numbers, not strings. And if compatibility with Strings is required, then '0' + Number(n) will do the job.
– RobG
Jul 23 '12 at 0:16
...
How to create a custom attribute in C#
...gt;
/// blah blah code.
/// </summary>
[DataMember]
[StringLengthValidator(8, RangeBoundaryType.Inclusive, 8, RangeBoundaryType.Inclusive, MessageTemplate = "\"{1}\" must always have \"{4}\" characters.")]
public string Code { get; set; }
From the snippet above, one might...
Strange behavior for Map, parseInt [duplicate]
...
parseInt receives two arguments: string and radix:
var intValue = parseInt(string[, radix]);
while map handler's second argument is index:
... callback is invoked with three arguments: the value of the element,
the index of the element, and the A...
How do I access named capturing groups in a .NET Regex?
...
You specify the named capture group string by passing it to the indexer of the Groups property of a resulting Match object.
Here is a small example:
using System;
using System.Text.RegularExpressions;
class Program
{
static void Main()
{
Stri...
What is the fastest substring search algorithm?
...n 2011, I believe it may very well be the "Simple Real-Time Constant-Space String Matching" algorithm by Dany Breslauer, Roberto Grossi, and Filippo Mignosi.
Update:
In 2014 the authors published this improvement: Towards optimal packed string matching.
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python list in sql query as parameter
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Answers so far have been templating the values into a plain SQL string. That's absolutely fine for integers, but if we wanted to do it for strings we get the escaping issue.
Here's a variant using a parameterised query that would work for both:
placeholder= '?' # For SQLite. See DBAPI p...