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C# Sort and OrderBy comparison
... {
var result = list.OrderBy(n => n.Name, new NameComparer()).ToArray();
}
}
On my computer when compiled in Release mode this program prints:
Sort: 1162ms
OrderBy: 1269ms
UPDATE:
As suggested by @Stefan here are the results of sorting a big list fewer times:
List<Person&g...
PHP “php://input” vs $_POST
...xchanging more complex data with types (string, int, bool) and structures (arrays, objects), so in most cases JSON is the best choice. But a request with a JSON-payload would look something like this:
POST /page.php HTTP/1.1
{"key1":"value1","key2":"value2","key3":"value3"}
The content would now...
Filtering a list based on a list of booleans
...
With numpy:
In [128]: list_a = np.array([1, 2, 4, 6])
In [129]: filter = np.array([True, False, True, False])
In [130]: list_a[filter]
Out[130]: array([1, 4])
or see Alex Szatmary's answer if list_a can be a numpy array but not filter
Numpy usually gives ...
Convert a binary NodeJS Buffer to JavaScript ArrayBuffer
How can I convert a NodeJS binary buffer into a JavaScript ArrayBuffer?
12 Answers
12
...
Include constant in string without concatenating
...( $userText )}" );
Produces properly escaped html as expected.
Callback arrays not allowed!
If by now you are under the impression that the function name can be any callable, that's not the case, as an array that returns true when passed to is_callable would cause a fatal error when used inside ...
TypeScript sorting an array
...ers
When sorting numbers, you can use the compact comparison:
var numericArray: number[] = [2, 3, 4, 1, 5, 8, 11];
var sortedArray: number[] = numericArray.sort((n1,n2) => n1 - n2);
i.e. - rather than <.
Other Types
If you are comparing anything else, you'll need to convert the comparis...
Last iteration of enhanced for loop in java
...here, and StringBuilder has a perfectly good append(int) overload.)
int[] array = {1, 2, 3...};
StringBuilder builder = new StringBuilder();
for (int i : array) {
if (builder.length() != 0) {
builder.append(",");
}
builder.append(i);
}
The nice thing about this is that it wil...
Clone Object without reference javascript [duplicate]
...code :
jQuery.extend = jQuery.fn.extend = function() {
var src, copyIsArray, copy, name, options, clone,
target = arguments[0] || {},
i = 1,
length = arguments.length,
deep = false;
// Handle a deep copy situation
if ( typeof target === "boolean" ) {
...
Google Gson - deserialize list object? (generic type)
... com.google.gson.reflect.TypeToken;
...
Type listType = new TypeToken<ArrayList<YourClass>>(){}.getType();
List<YourClass> yourClassList = new Gson().fromJson(jsonArray, listType);
Since several people in the comments have mentioned it, here's an explanation of how the TypeToke...
A semantics for Bash scripts?
...he assignment
$ echo $foo
20
$ echo "${foo:0:1}" # Still just a string
2
Arrays
Arguments and Positional Parameters
Before talking about arrays it might be worth discussing positional parameters. The arguments to a shell script can be accessed using numbered parameters, $1, $2, $3, etc. You can ...