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How to filter None's out of List[Option]?
...ten wants to work with these elements and not just flatten the list out of fun.
– Frank
Apr 11 '12 at 11:38
Yes, I hes...
C# Double - ToString() formatting with two decimal places but no rounding
...
I suggest you truncate first, and then format:
double a = 123.4567;
double aTruncated = Math.Truncate(a * 100) / 100;
CultureInfo ci = new CultureInfo("de-DE");
string s = string.Format(ci, "{0:0.00}%", aTruncated);
Use the constant 100 for 2 digits truncate; use a 1 followed by a...
NoSQL Use Case Scenarios or WHEN to use NoSQL [closed]
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AdaTheDevAdaTheDev
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How to get the absolute coordinates of a view
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Now that's the kind of function I expected to find. Unfortunately, I must not be using it properly. I realise it was a known bug that getLocationOnScreen gives a null pointer exception in Android v1.5 (the platform I'm coding for), but testing in v...
In MySQL, how to copy the content of one table to another table within the same database?
...edited Feb 20 '15 at 7:23
Rizier123
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How do I determine k when using k-means clustering?
...ering
n = 150
g = 6
set.seed(g)
d <- data.frame(x = unlist(lapply(1:g, function(i) rnorm(n/g, runif(1)*i^2))),
y = unlist(lapply(1:g, function(i) rnorm(n/g, runif(1)*i^2))))
mydata<-d
#Plot 3X2 plots
attach(mtcars)
par(mfrow=c(3,2))
#Plot the original dataset
plot(mydata$x,m...
Compare JavaScript Array of Objects to Get Min / Max
... etc.) on an array of objects, and return a single result:
myArray.reduce(function(prev, curr) {
return prev.Cost < curr.Cost ? prev : curr;
});
...or you can define that inner function with ES6 function syntax:
(prev, curr) => prev.Cost < curr.Cost ? prev : curr
If you want to be...
How to escape double quotes in a title attribute
...#064 | at sign @
&#093 | right bracket ]
&#123 | left curly brace {
&#125 | right curly brace }
&#133 | ellipsis …
&#135 | double dagger ‡
&#146 | right single quote ’
&#148 ...
Inserting multiple rows in mysql
...ship) table :
// get data
$table_1 = get_table_1_rows();
$table_2_fk_id = 123;
// prepare first part of the query (before values)
$query = "INSERT INTO `table` (
`table_1_fk_id`,
`table_2_fk_id`,
`insert_date`
) VALUES ";
//loop the table 1 to get all foreign keys and put it in array
for...
Why is Dictionary preferred over Hashtable in C#?
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Fun. The Dictionary<T> source code looks a lot cleaner and faster. It might be better to use Dictionary and implement your own synchronization. If the Dictionary reads absolutely need to be current, then you'd simply ...