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LINQ order by null column where order is ascending and nulls should be last
... descending
orderby p.LowestPrice descending
select p;
will be translated by the compiler to
var products = _context.Products
.Where(p => p.ProductTypeId == 1)
.OrderByDescending(p => p.LowestPrice.HasValue)
...
Can the jQuery UI Datepicker be made to disable Saturdays and Sundays (and holidays)?
... array with [0] equal to true/false indicating whether or not this date is selectable and 1 equal to a CSS class name(s) or '' for the default presentation. It is called for each day in the datepicker before is it displayed.
Display some national holidays in the datepicker.
$(".selector").datepick...
Where does Android emulator store SQLite database?
...data > your-package-name > databases > your-database-file.
Then select the file, click on the disket icon in the right corner of the screen to download the .db file. If you want to upload a database file to the emulator you can click on the phone icon(beside disket icon) and choose the fi...
TextEnhancer拓展 - 增强App中的文本格式 - App Inventor 2 拓展 - 清泛IT社区，为创新赋能！
...gh.
blocks (32)[size=15.008px]822×162 16.7 KB
[size=15.008px]SetTextSelectable:Enable or disable text selection for the specified label. true to enable text selection, false to disable text selection.
blocks (30)[size=15.008px]784×162 16.1 KB
[size=15.008px]HighlightText:Highlight spec...
libxml/tree.h no such file or directory
...n two ways:
1. Target settings
Click on your target (not your project) and select Build Phases.
Click on the reveal triangle titled Link Binary With Libraries. Click on the + to add a library.
Scroll to the bottom of the list and select libxml2.dylib. That adds the libxml2 library to your project.
2...
Where to find “Microsoft.VisualStudio.TestTools.UnitTesting” missing dll?
...ssional or above; .NET Framework 4.0).
or right click on your project and select: Add Reference... > .NET:
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C++ preprocessor __VA_ARGS__ number of arguments
...VA_ARGS__), __VA_ARGS__))
void sum(int numargs, ...);
int main(int argc, char *argv[]) {
SUM(1);
SUM(1, 2);
SUM(1, 2, 3);
SUM(1, 2, 3, 4);
return 1;
}
void sum(int numargs, ...) {
int total = 0;
va_list ap;
printf("sum() called with %d params:", numargs);
...
Which data type for latitude and longitude?
...e using gist (geog);
and then request, say, 5 closest to a given point:
select *
from your_table
order by geog <-> 'SRID=4326;POINT(lon lat)'
limit 5;
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Renaming xcode 4 project and the actual folder
...e, click the icon shown in the screenshot below to bring up a file dialog. Select the folder that you previously renamed. This will re-associate the virtual folder with the real folder on disk, and will automatically fix the links to all the files inside.
In your build settings, search for the old f...
How do I extract a sub-hash from a hash?
...e same:
h1 = {:a => :A, :b => :B, :c => :C, :d => :D}
h2 = h1.select {|key, value| [:b, :d, :e, :f].include?(key) } # => {:b=>:B, :d=>:D}
h1 = Hash[h1.to_a - h2.to_a] # => {:a=>:A, :c=>:C}
And if you want to patch that into the Hash class:
class Hash
def extract...