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Entity Framework: There is already an open DataReader associated with this Command
...My understanding of this problem is that there are multiple data retrieval commands executed on single connection (or single command with multiple selects) while next DataReader is executed before first one has completed the reading. The only way to avoid the exception is to allow multiple nested Da...
How to move the cursor word by word in the OS X Terminal
I know the combination Ctrl + A to jump to the beginning of the current command, and Ctrl + E to jump to the end.
17 A...
Linq to Entities - SQL “IN” clause
...
{
//Do stuff on each selected user;
}
Syntactically this looks more complex, and you have to understand the concept of lambda expressions or delegates to really figure out what's going on, but as you can see, this condenses the code a fair amount.
It all comes down to your coding style and p...
How to launch html using Chrome at “--allow-file-access-from-files” mode?
...n extension for your executable... So if you move to Chrome's folder, this command will probably work too :
> .\chrome.exe --allow-file-access-from-files
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In Python, what is the difference between “.append()” and “+= []”?
...right-hand-side list into the left-hand-side list.
Update: perf analysis
Comparing bytecodes we can assume that append version wastes cycles in LOAD_ATTR + CALL_FUNCTION, and += version -- in BUILD_LIST. Apparently BUILD_LIST outweighs LOAD_ATTR + CALL_FUNCTION.
>>> import dis
>>&...
How to read data when some numbers contain commas as thousand separator?
... csv file where some of the numerical values are expressed as strings with commas as thousand separator, e.g. "1,513" instead of 1513 . What is the simplest way to read the data into R?
...
Ruby: require vs require_relative - best practice to workaround running in both Ruby =1.
...gem so thought I'd share as it was inspired by this post.
https://github.com/appoxy/aws/blob/master/lib/awsbase/require_relative.rb
unless Kernel.respond_to?(:require_relative)
module Kernel
def require_relative(path)
require File.join(File.dirname(caller[0]), path.to_str)
end
e...
Change navbar color in Twitter Bootstrap
... statements seems to have resolved the issue. Example: color: #ffffff; becomes color: #ffffff !important;.
– Adrian
May 24 '16 at 18:40
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Is it possible to change a UIButtons background color?
...ssibility". for you consideration.
As this is an old answer, I strongly recommend reading comments for troubleshooting
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How do you create a Swift Date object?
...rs (rather than relative seconds) to make a Date. For this you can use DateComponents to specify the components and then Calendar to create the date. The Calendar gives the Date context. Otherwise, how would it know what time zone or calendar to express it in?
// Specify date components
var dateComp...