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Difference between attr_accessor and attr_accessible
...stname" and "role" :
SQL instructions :
CREATE TABLE users (
firstname string,
lastname string
role string
);
I assumed that you set the option config.active_record.whitelist_attributes = true in your config/environment/production.rb to protect your application from Mass assignment exploit...
How to COUNT rows within EntityFramework without loading contents?
...le row count.
int count;
using (var db = new MyDatabase()){
string sql = "SELECT COUNT(*) FROM MyTable where FkId = {0}";
object[] myParams = {1};
var cntQuery = db.ExecuteStoreQuery<int>(sql, myParams);
count = cntQuery.First<int>();
}
...
How to scale an Image in ImageView to keep the aspect ratio
... were having this on our image view, where the height included all of this extra whitespace. It isn't "transparent pixels", since we had fill_parent for width, and wrap_content for height. If you don't have adjustViewBounds=true, then you get the extra whitespace. After setting that to true, our iss...
How to configure Ruby on Rails with no database?
...-record option to generate an application without a database
Notice the extra hyphen '-' as opposed to previous Rails versions.
rails new myApp --skip-active-record
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How to order by with union in SQL?
...ed from the table. The point is that your header may very well be the same string as the name of the column from which you're selecting and this is the solution for using the label you want without it colliding in your union.
– Yevgeny Simkin
Oct 23 '17 at 6:36...
Current time in microseconds in java
...Format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS") ;
}
public String get()
{ long microSeconds = (System.nanoTime() - this.startNanoseconds) / 1000 ;
long date = this.startDate + (microSeconds/1000) ;
return this.dateFormat.format(date) + String.format("%03d", microSecon...
Calculate last day of month in JavaScript
...entral Standard Time)
Output differences are due to differences in the toString() implementation, not because the dates are different.
Of course, just because the browsers identified above use 0 as the last day of the previous month does not mean they will continue to do so, or that browsers not ...
What characters are forbidden in Windows and Linux directory names?
... but don't forget on Windows you have to manage reserved, case-independent strings, like device names (prn, lpt1, con) and . and ..
– tahoar
Oct 12 '16 at 18:46
3
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Service Reference Error: Failed to generate code for the service reference
...s parameters inside it are of type System.Guid, they will be translated to strings in the generated client if the reuse types option is disabled.
An alternative that I prefer to disabling reusing types is to add the service reference from Class Library project specifically created for that purpose....
How to check if all of the following items are in a list?
...ems:
>>> a = {'key': 'value'}
>>> b = {'key': 'value', 'extra_key': 'extra_value'}
>>> all(item in a.items() for item in b.items())
True
>>> all(item in b.items() for item in a.items())
False
That's because dict.items returns tuples of key/value pairs, and much...