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Detecting an “invalid date” Date instance in JavaScript
...n Borgar's answer is unnecessary as isNaN() and isFinite() both implicitly convert to number.
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How do I update/upsert a document in Mongoose?
...t = new Contact({
phone: request.phone,
status: request.status
});
// Convert the Model instance to a simple object using Model's 'toObject' function
// to prevent weirdness like infinite looping...
var upsertData = contact.toObject();
// Delete the _id property, otherwise Mongo will return a ...
Differences and relationship between glActiveTexture and glBindTexture
...rent objects, and all of our object manipulation functions are adjusted to select from the current object.
When you change the currently active object, you change the entire set of target locations. So you can bind something that goes into current object 0, switch to current object 4, and will be m...
Passing a single item as IEnumerable
...nsion method to SingleItemAsEnumerable, everything started to work. Cannot convert IEnumerable<Dictionary<CheckBox,System.Tuple<int,int>>.KeyCollection>' to 'IEnumerable<CheckBox>'. An explicit conversion exists (are you missing a cast?) I can live with a hack for a while, b...
How to make UIButton's text alignment center? Using IB
...wer version of xcode (mine is xcode 6.1) we have property attributed title
Select Attributed then select the text and press centre option below
P.S. The text was not coming multiline for that I have to set the
btn.titleLabel.numberOfLines = 0
...
The opposite of Intersect()
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This code enumerates each sequence only once and uses Select(x => x) to hide the result to get a clean Linq-style extension method. Since it uses HashSet<T> its runtime is O(n + m) if the hashes are well distributed. Duplicate elements in either list are omitted.
publi...
Bold words in a string of strings.xml in Android
...xtensions functions on resources (activities|fragments |context) that will convert your string to an html span
e.g.
fun Resources.getHtmlSpannedString(@StringRes id: Int): Spanned = getString(id).toHtmlSpan()
fun Resources.getHtmlSpannedString(@StringRes id: Int, vararg formatArgs: Any): Spanned ...
lexers vs parsers
...lexer recognizes a character sequence constituting a proper number, it can convert it to its binary value and store with the "number" token.
Similarly, when a parser recognize an expression, it can compute its value and store with the "expression" node of the syntax tree.
They all produce on their...
Styling HTML email for Gmail
...
Use inline styles for everything. This site will convert your classes to inline styles: http://premailer.dialect.ca/
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How to find the sum of an array of numbers
...resentation of JavaScript code. Using the Array.prototype.join function to convert the array to a string, we change [1,2,3] into "1+2+3", which evaluates to 6.
console.log(
eval([1,2,3].join('+'))
)
//This way is dangerous if the array is built
// from user input as it may be exploited ...