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Deep null checking, is there a better way?
... }
if (stack.Count == 0 || !(stack.Peek().Expression is ParameterExpression))
throw new ApplicationException(String.Format("The expression '{0}' contains unsupported constructs.",
expression));
...
Default value of function parameter
...n() {
Add(4);
}
The compilation of test.cpp will not see the default parameter declaration, and will fail with an error.
For this reason, the default parameter definition is usually specified in the function declaration:
lib.h
int Add(int a, int b = 3);
...
How to get error information when HttpWebRequest.GetResponse() fails
...the response
console.Writeline(response.Body.Id); //where the body param matches the object you pass in as an anonymous type.
}else {
//do something with the error
console.Writelint(string.Format("{0}: {1}", response.StatusCode.ToString(), response.ErrorMessage);
...
How to get current path with query string using Capybara
...rch=name but you only care that it's on the /people page regardless of the param, you can send the only_path option:
expect(page).to have_current_path(people_path, only_path: true)
Additionally, if you want to compare the entire URL:
expect(page).to have_current_path(people_url, url: true)
Cre...
byte[] to hex string [duplicate]
...he way for the IEnumerable<string> to go to a proper overload, i.e. (params string[] values), is we need to convert the IEnumerable<string> to string array. Prior to 4.0, string.Concat has 10 overload functions, on 4.0 it is now 12
...
Change / Add syntax highlighting for a language in Sublime 2/3
...ess, alpha
rgba = red, green, blue, alpha
hsla(151, 100%, 41%, 1)
- last param is the alpha level (transparency) 1 = opaque, 0.5 = half-transparent, 0 = full-transparent
hsl(151, 100%, 41%) - no alpha channel
rgba(0, 209, 108, 1) - rgb with an alpha channel
rgb(0, 209, 108) - no alpha channel
...
Awaiting multiple Tasks with different results
...but this does lots of overhead and allocates various arrays (including the params Task[] array) and lists (internally). It works, but it isn't great IMO. In many ways it is simpler to use an async operation and just await each in turn:
async Task<string> DoTheThings() {
Task<Cat> x ...
Will the base class constructor be automatically called?
...onstructor is when the constructors below the current type need additional parameters. For example:
public class Base
{
public int SomeNumber { get; set; }
public Base(int someNumber)
{
SomeNumber = someNumber;
}
}
public class AlwaysThreeDerived : Base
{
public A...
Resolve Type from Class Name in a Different Assembly
...pe ReconstructType(string assemblyQualifiedName, bool throwOnError = true, params Assembly[] referencedAssemblies)
{
foreach (Assembly asm in referencedAssemblies)
{
var fullNameWithoutAssemblyName = assemblyQualifiedName.Replace($", {asm.FullName}", "");
...
PHP shell_exec() vs exec()
... by default, but can provide all output as an array specifed as the second parameter.
See
http://php.net/manual/en/function.shell-exec.php
http://php.net/manual/en/function.exec.php
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