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How to write a scalable Tcp/Ip based server
...n.ReceiveBuffer.IndexOf('\n', index)) != -1)
{
string s = connection.ReceiveBuffer.GetString(start, index - start - 1);
s = s.Backspace();
LineReceivedEventArgs args = new LineReceivedEventArgs(connection, s);
Delegate[] de...
Changing password with Oracle SQL Developer
... Thank you, it worked on Windows 7 64bit. I did have to go through an extra step though (which is the same as the first step on OS X config above), otherwise the 'reset password' option would remain grayed out. 4. Set path to Instant Client in Preferences -> Database -> Advanced -> Us...
Drawing a line/path on Google Maps
...ById(R.id.mapview);
geoPoint = null;
myMapView.setSatellite(false);
String pairs[] = getDirectionData("ahmedabad", "vadodara");
String[] lngLat = pairs[0].split(",");
// STARTING POINT
GeoPoint startGP = new GeoPoint(
(int) (Double.parseDouble(lngLat[1]) * 1E6), (int) (Double
...
What is the purpose of Rank2Types?
...y only use it as monomorphic. In the example map uses id as if it had type String -> String. And of course you can also pass a simple monomorphic function of the given type instead of id. Without rank2types there is no way for a function to require that its argument must be a polymorphic function...
Why should you remove unnecessary C# using directives?
...
Leaving extra using directives is fine. There is a little value in removing them, but not much. For example, it makes my IntelliSense completion lists shorter, and therefore easier to navigate.
The compiled assemblies are not affe...
jQuery selector regular expressions
...elements
});
If you want to select elements which id is not a given string
$("input[id!='DiscountType']").each(function (i, el) {
//It'll be an array of elements
});
If you want to select elements which name contains a given word, delimited by spaces
$("input[name~=...
How to iterate over a JSONObject?
...elp:
JSONObject jsonObject = new JSONObject(contents.trim());
Iterator<String> keys = jsonObject.keys();
while(keys.hasNext()) {
String key = keys.next();
if (jsonObject.get(key) instanceof JSONObject) {
// do something with jsonObject here
}
}
...
How to link to apps on the app store
...n' s openURL: method to open your item in the App Store.
Sample code:
NSString *iTunesLink = @"itms://itunes.apple.com/app/apple-store/id375380948?mt=8";
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:iTunesLink]];
Swift 4.2
let urlStr = "itms-apps://itunes.apple.com/app/ap...
Stop Mongoose from creating _id property for sub-document array items
...t declaration.
var schema = new mongoose.Schema({
field1:{
type:String
},
subdocArray:[{
_id:false,
field :{type:String}
}]
});
This will prevent the creation of an _id field in your subdoc.
Tested in Mongoose v5.9.10
...
Add a default value to a column through a migration
..., since change_column is irreversible.
Instead, though it may be a couple extra lines, you should use def up and def down
So if you have a column with no default value, then you should do this to add a default value.
def up
change_column :users, :admin, :boolean, default: false
end
def down
...