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What's wrong with nullable columns in composite primary keys?
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Primary keys are for uniquely identifying rows. This is done by comparing all parts of a key to the input.
Per definition, NULL cannot be part of a successful comparison. Even a comparison to itself (NULL = NULL) will fail. This means a key containing NULL would not work.
Additonally, NULL is al...
Convert NSDate to NSString
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How about...
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
[formatter setDateFormat:@"yyyy"];
//Optionally for time zone conversions
[formatter setTimeZone:[NSTimeZone timeZoneWithName:@"..."]];
NSString *stringFromDate = [formatter stringFromDate:myNSDateInstance];
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How can I scroll a web page using selenium webdriver in python?
...selenium webdriver to parse through facebook user friends page and extract all ids from the AJAX script. But I need to scroll down to get all the friends. How can I scroll down in Selenium. I am using python.
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HTTP authentication logout via PHP
...ecification (section 15.6):
Existing HTTP clients and user agents typically retain authentication
information indefinitely. HTTP/1.1. does not provide a method for a
server to direct clients to discard these cached credentials.
On the other hand, section 10.4.2 says:
If the request...
'Operation is not valid due to the current state of the object' error during postback
... recent security update is 1000.
Try adding the following setting in your web.config's <appsettings> block. in this block you are maximizing the MaxHttpCollection values this will override the defaults set by .net Framework. you can change the value accordingly as per your form needs
<app...
Calling Python in Java?
...to have python code inside java. Wrap your python code with flask or other web framework to make it as a microservice. Make your java program able to call this microservice (e.g. via REST).
Beleive me, this is much simple and will save you tons of issues. And the codes are loosely coupled so they a...
How to use dashes in HTML-5 data-* attributes in ASP.NET MVC
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Still no luck with WebGrid.GetHtml(htmlAttributes: new { data_some : "thing" }). :'(
– Rubens Mariuzzo
Nov 26 '12 at 16:04
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Django development IDE [closed]
I have done a little Django development, but it has all been in a text editor. I was curious what more advanced development tools others are using in their Django development.
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How to select an option from drop down using Selenium WebDriver C#?
...library 2.53 , The SelectByText doesnt seem to be working. Im able to see all the options . Even if i iterate the options and set the correct value, The value is not getting set..Any help would be great
– Viswas Menon
Aug 9 '16 at 10:14
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Security of REST authentication schemes
...s answer only mentioned SSL in the context of data transfer and didn't actually cover authentication.
You're really asking about securely authenticating REST API clients. Unless you're using TLS client authentication, SSL alone is NOT a viable authentication mechanism for a REST API. SSL without ...