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Difference between make and build in Android Studio
...ified scope are compiled. The scope in this case may be a file, a package, etc.
Make Project All the source files in the entire project that have been modified since the last compilation are compiled. Dependent source files, if appropriate, are also compiled. Additionally, the tasks tied to the...
How do you switch pages in Xamarin.Forms?
... we should agree that WelcomeView(Page) should have a WelcomeViewModel and etc. Here is a code example of a mapper:
public class TypeMapperService
{
public Type MapViewModelToView(Type viewModelType)
{
var viewName = viewModelType.FullName.Replace("Model", string.Empty);
var...
What does threadsafe mean?
...eed to perform common actions - disk i/o, outputting results to the screen etc. - these parts of the code will need to be written in such a way that they can handle being called from multiple threads, often at the same time. This will involve things like:
Working on copies of data
Adding locks aro...
How to detect online/offline event cross-browser?
...
The library actually works by fetching local favicon repeatedly under the hood. In my opinion, the library is too "big" and has too many features; the main trick is just fetching favicon repeatedly.
– Karel Bílek
Oct...
How to remove ASP.Net MVC Default HTTP Headers?
...
Does it work against your content files/images/etc that aren't going through the code path?
– Mark Sowul
Oct 22 '15 at 15:46
...
How to change owner of PostgreSql database?
...bjects with a new owner, including system resources (postgres0, postgres1, etc.)
First, connect to admin database and update DB ownership:
psql
postgres=# REASSIGN OWNED BY old_name TO new_name;
This is a global equivalent of ALTER DATABASE command provided in Frank's answer, but instead of up...
How do HttpOnly cookies work with AJAX requests?
...ink. All the normal request properties: user-agent, ip, session, cookies, etc. are passed to the server.
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Dynamic LINQ OrderBy on IEnumerable / IQueryable
...te that dynamic only applies to LINQ-to-Objects (expression-trees for ORMs etc can't really represent dynamic queries - MemberExpression doesn't support it). But here's a way to do it with LINQ-to-Objects. Note that the choice of Hashtable is due to favorable locking semantics:
using Microsoft.CSha...
Disable all table constraints in Oracle
... really want to disable all constraints (including NOT NULL, primary keys, etc). You should think about putting constraint_type in the WHERE clause.
BEGIN
FOR c IN
(SELECT c.owner, c.table_name, c.constraint_name
FROM user_constraints c, user_tables t
WHERE c.table_name = t.table_name
...
Subset of rows containing NA (missing) values in a chosen column of a data frame
...
Could you explain why this works, what this does etc.?
– csilk
Nov 22 '17 at 0:19
new_DF<...