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Providing a default value for an Optional in Swift?
...as coalescing operator (??) that allows that. For example, for an optional String myOptional you could write:
result = myOptional ?? "n/a"
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fol...
callback to handle completion of pipe
...adStreams from file. But in my case readStream has to be created from JSON string coming from a message pool.
var jsonStream = through2.obj(function(chunk, encoding, callback) {
this.push(JSON.stringify(chunk, null, 4) + '\n');
callback();
})...
sed: print only matching group
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Also remember to add .* to the end of the regexp if the string you want to extract is not always at the end of the line.
– Teemu Leisti
Nov 22 '17 at 8:54
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Linq select objects in list where exists IN (A,B,C)
...ay if it contains more than 1000 items. var allowedStatus = new HashSet<string> { "A", "B", "C" };
– Jay Shah
Nov 9 '18 at 18:14
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Explanation of JSHint's Bad line breaking before '+' error
...line break as opposed to in the new line. Like so:
window.location.href = String1 +
'#' +
Sting2 +
'=' +
String3;
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In R, how to get an object's name after it is sent to a function?
...n which is the inverse of parse function makes that freezed symbol back to String
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C# - Selectively suppress custom Obsolete warnings
...
using System;
class Test
{
[Obsolete("Message")]
static void Foo(string x)
{
}
static void Main(string[] args)
{
#pragma warning disable 0618
// This one is okay
Foo("Good");
#pragma warning restore 0618
// This call is bad
Foo("Bad");
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How can I generate an ObjectId with mongoose?
...ew mongoose.mongo.ObjectId('56cb91bdc3464f14678934ca');
// or leave the id string blank to generate an id with a new hex identifier
var newId2 = new mongoose.mongo.ObjectId();
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Cannot send a content-body with this verb-type
...= (HttpWebRequest)WebRequest.Create(strServer + strURL.Split('&')[1].ToString());
Header(ref request, p_Method);
And the method Header:
private void Header(ref HttpWebRequest p_request, string p_Method)
{
p_request.ContentType = "application/x-www-form-urlencoded";
p_request.Method =...
How can I pass a constant value for 1 binding in multi-binding?
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If your value is simply a string, you can specify it as a constant in the Source property of a binding. If it is any other primitive data type, you need to define a static resource and reference this.
Define the sys namespace in the root of the XAML ...