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Java Date vs Calendar
...stion to use joda time. It is easier to use and understand and offers much more functionality you can use.
– Jeroen van Bergen
Sep 10 '09 at 9:34
30
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Android emulator and virtualbox cannot run at same time
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Much more elegant than shtting the existing VM down. Thanks.
– MonoThreaded
Feb 3 '15 at 8:21
2
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How do I get a TextBox to only accept numeric input in WPF?
...Parse() would probably be implemented with the same number of lines and be more flexible.
– Thomas Weller
Oct 25 '17 at 12:54
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Is LINQ to SQL Dead or Alive?
...context)
Initializers
Property default implementation (a shorthand)
Read more here.
In VB 9.0 there's some inline XML magic, and many other things (many are similar to the above list for C#).
Read more here.
share
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How to cast List to List
...Class> mythings = (List<MyClass>) (Object) objects
But here's a more versatile solution:
List<Object> objects = Arrays.asList("String1", "String2");
List<String> strings = objects.stream()
.map(element->(String) element)
.coll...
Efficient way to insert a number into a sorted array of numbers?
I have a sorted JavaScript array, and want to insert one more item into the array such the resulting array remains sorted. I could certainly implement a simple quicksort-style insertion function:
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How do I commit case-sensitive only filename changes in Git?
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1090
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add created_at and updated_at fields to mongoose schemas
...This will return the following output:
ISODate("2012-10-15T21:26:17Z")
More info here How do I extract the created date out of a Mongo ObjectID
In order to add updated_at filed you need to use this:
var ArticleSchema = new Schema({
updated_at: { type: Date }
// rest of the fields go here
}...
nodeJs callbacks simple example
... argument, the first argument, as an error. Optionally we will have one or more additional arguments, depending on the context. In this case, the context is our above example.
Here I rewrite our example in this convention.
var myCallback = function(err, data) {
if (err) throw err; // Check for t...
filter for complete cases in data.frame using dplyr (case-wise deletion)
... works for me:
df %>%
filter(complete.cases(df))
Or a little more general:
library(dplyr) # 0.4
df %>% filter(complete.cases(.))
This would have the advantage that the data could have been modified in the chain before passing it to the filter.
Another benchmark with more columns...