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How to create GUID / UUID?
I'm trying to create globally-unique identifiers in JavaScript. I'm not sure what routines are available on all browsers, how "random" and seeded the built-in random number generator is, etc.
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Warning message: In `…` : invalid factor level, NA generated
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Here is a flexible approach, it can be used in all cases, in particular:
to affect only one column, or
the dataframe has been obtained from applying previous operations (e.g. not immediately opening a file, or creating a new data frame).
First, un-factorize a stri...
What are the rules for JavaScript's automatic semicolon insertion (ASI)?
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First of all you should know which statements are affected by the automatic semicolon insertion (also known as ASI for brevity):
empty statement
var statement
expression statement
do-while statement
continue statement
break statement...
Fluent Validation vs. Data Annotations [closed]
...when used for ASP.NET MVC validatation? They seem to have similar objects, all the way to their object names. Is one related to another? What are their differences? In what way do these differences denote different use cases?
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JUnit 4 Test Suites
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You can create a suite like so. For example an AllTest suite would look something like this.
package my.package.tests;
@RunWith(Suite.class)
@SuiteClasses({
testMyService.class,
testMyBackend.class,
...
})
public class AllTests {}
Now you can run this in ...
Guards vs. if-then-else vs. cases in Haskell
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From a technical standpoint, all three versions are equivalent.
That being said, my rule of thumb for styles is that if you can read it as if it was English (read | as "when", | otherwise as "otherwise" and = as "is" or "be"), you're probably doing some...
AngularJS $http and $resource
I have some web services that I want to call. $resource or $http , which one should I use?
10 Answers
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How can I create a copy of an object in Python?
...would like to create a copy of an object. I want the new object to possess all properties of the old object (values of the fields). But I want to have independent objects. So, if I change values of the fields of the new object, the old object should not be affected by that.
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How do you get current active/default Environment profile programmatically in Spring?
...ieve similar functionality using the annotation @Profile("local") Profiles allow for selective configuration based on a passed-in or environment parameter. Here is more information on this technique: Spring Profiles
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Save classifier to disk in scikit-learn
... Works like a charm! I was trying to use np.savez and load it back all along and that never helped. Thanks a lot.
– Kartos
Jan 29 '14 at 9:29
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