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When to choose checked and unchecked exceptions
...ntable: The caller did everything within their power to validate the input parameters, but some condition outside their control has caused the operation to fail. For example, you try reading a file but someone deletes it between the time you check if it exists and the time the read operation begins....
How to retrieve form values from HTTPPOST, dictionary or?
...ic ActionResult SubmitAction(FormCollection collection)
{
// Get Post Params Here
string var1 = collection["var1"];
}
You can also use a class, that is mapped with Form values, and asp.net mvc engine automagically fills it:
//Defined in another file
class MyForm
{
public string var1 { get...
Is it better to call ToList() or ToArray() in LINQ queries?
...ection.
[MemoryDiagnoser]
public class Benchmarks
{
[Params(0, 1, 6, 10, 39, 100, 666, 1000, 1337, 10000)]
public int Count { get; set; }
public IEnumerable<int> Items => Enumerable.Range(0, Count);
[Benchmark(Description = "ToArray()", Baseli...
What Does 'Then' Really Mean in CasperJS
...wn below:
/**
* Schedules the next step in the navigation process.
*
* @param function step A function to be called as a step
* @return Casper
*/
Casper.prototype.then = function then(step) {
"use strict";
this.checkStarted();
if (!utils.isFunction(step)) {
throw new Casp...
What's wrong with using $_REQUEST[]?
... And anyway if the method is POST, you still might want to take some query parameters out of the URL.
No, the problem with $_REQUEST is nothing to do with conflating GET and POST parameters. It's that it also, by default, includes $_COOKIE. And cookies really aren't like form submission parameters...
Using Build Flavors - Structuring source folders and build.gradle correctly
...to multiple hosts depending on the flavor
As before, you must include some params on your product flavor config field.
android {
productFlavors {
devel {
applicationId "zuul.com.android.devel"
buildConfigField 'String', 'HOST', '"http://192.168.1.34:3000"'
...
Standard alternative to GCC's ##__VA_ARGS__ trick?
...ted extension that lets you use a name other than __VA_ARGS__ for the rest-parameter) in document N976, but that received no response whatsoever from the committee; I don't even know if anyone read it. In 2016 it was proposed again in N2023, and I encourage anyone who knows how that proposal is goi...
val-mutable versus var-immutable in Scala
...utable:
Mutable objects can be modified inside methods, that take them as parameters, while reassignment is not allowed.
import scala.collection.mutable.ArrayBuffer
object MyObject {
def main(args: Array[String]) {
val a = ArrayBuffer(1,2,3,4)
silly(a)
println(a) // ...
Why do == comparisons with Integer.valueOf(String) give different results for 127 and 128?
...ache.cache[i + (-IntegerCache.low)];
return new Integer(i);
}
If the param is an integer between IntegerCache.low (defaulted to -128) and IntegerCache.high (calculated at runtime with minimum value 127) then a pre-allocated (cached) object is returned. So when you use 127 as parameter, you're ...
When should static_cast, dynamic_cast, const_cast and reinterpret_cast be used?
...o convert from type A to B, static_cast calls B's constructor passing A as param. Alternatively, A could have a conversion operator (i.e. A::operator B()). If B doesn't have such constructor, or A doesn't have a conversion operator, then you get compile time error.
Cast from A* to B* always succee...