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Single vs Double quotes (' vs ")
I've always used single quotes when writing my HTML by hand. I work with a lot of rendered HTML which always uses double quotes. This allows me to determine if the HTML was written by hand or generated. Is this a good idea?
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.NET XML serialization gotchas? [closed]
...t want the BOM. Notice the clear, obvious difference between Encoding.UTF8 and UTF8Encoding.
The three extra BOM Bytes at the beginning are (0xEFBBBF) or (239 187 191).
Reference: http://chrislaco.com/blog/troubleshooting-common-problems-with-the-xmlserializer/
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ASP.NET MVC Conditional validation
...ional validation rules in MVC3; have your model inherit IValidatableObject and implement the Validate method:
public class Person : IValidatableObject
{
public string Name { get; set; }
public bool IsSenior { get; set; }
public Senior Senior { get; set; }
public IEnumerable<Vali...
Mocking objects with Moq when constructor has parameters
...rete-classes.html
The best thing to do would be right click on your class and choose Extract interface.
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Duplicate headers received from server
...that the filename contained commas. Do a replace on commas to remove them and you should be fine. My function to make a valid filename is below.
public static string MakeValidFileName(string name)
{
string invalidChars = Regex.Escape(new string(System.IO.Path.GetInvalidFileNameCha...
CSRF protection with CORS Origin header vs. CSRF token
...the day you have to "trust" the client browser to safely store user's data and protect the client-side of the session. If you don't trust the client browser, then you should stop using the web at all for anything other than static content. Even with using CSRF tokens, you are trusting the client bro...
Disable a Maven plugin defined in a parent POM
...e Findbugs plugin is in our parent/super POM, so it'll inherit the version and so-on.
In Maven 3, you'll need to use:
<configuration>
<skip>true</skip>
</configuration>
for the plugin.
sha...
Update a dataframe in pandas while iterating row by row
I have a pandas data frame that looks like this (its a pretty big one)
8 Answers
8
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entity object cannot be referenced by multiple instances of IEntityChangeTracker. while adding relat
...n CityService. Later you add a city1 as a reference to the new Employee e1 and add e1 including this reference to city1 to the context in EmployeeService. As a result you have city1 attached to two different context which is what the exception complains about.
You can fix this by creating a context...
Why is spawning threads in Java EE container discouraged?
...aged because all resources within the environment are meant to be managed, and potentially monitored, by the server. Also, much of the context in which a thread is being used is typically attached to the thread of execution itself. If you simply start your own thread (which I believe some servers ...