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Inversion of Control vs Dependency Injection
...ode will look as below:
public class SMSService
{
public void SendSMS(string mobileNumber, string body)
{
SendSMSUsingGateway(mobileNumber, body);
}
private void SendSMSUsingGateway(string mobileNumber, string body)
{
/*implementation for sending SMS using gatew...
Why do I get TypeError: can't multiply sequence by non-int of type 'float'?
...
raw_input returns a string (a sequence of characters). In Python, multiplying a string and a float makes no defined meaning (while multiplying a string and an integer has a meaning: "AB" * 3 is "ABABAB"; how much is "L" * 3.14 ? Please do not re...
How to define “type disjunction” (union types)?
...
First, declare a class with the types you wish to accept as below:
class StringOrInt[T]
object StringOrInt {
implicit object IntWitness extends StringOrInt[Int]
implicit object StringWitness extends StringOrInt[String]
}
Next, declare foo like this:
object Bar {
def foo[T: StringOrInt](x:...
Literal notation for Dictionary in C#?
...lection initializer syntax, but you still need to make a new Dictionary<string, string> object first as the shortcut syntax is translated to a bunch of Add() calls (like your code):
var data = new Dictionary<string, string>
{
{ "test", "val" },
{ "test2", "val2" }
};
In C# 6,...
How to check if a string starts with one of several prefixes?
...there is; matching via regular expressions is much more expensive than raw string method calls. Exact figures I cannot give, but this is the general consensus.
– klaar
Mar 21 '16 at 15:47
...
What causes javac to issue the “uses unchecked or unsafe operations” warning
...ections without type specifiers (e.g., Arraylist() instead of ArrayList<String>()). It means that the compiler can't check that you're using the collection in a type-safe way, using generics.
To get rid of the warning, just be specific about what type of objects you're storing in the collect...
LINQ .Any VS .Exists - What's the difference?
...012");
if (forceListEval != "sdsdf")
{
var s = string.Empty;
var start2 = DateTime.Now;
if (!list1.Exists(o => o == "0123456789012"))
{
var end2 = DateTime.Now;
s += " Exists: " + end2.Subtract(start2)...
Convert String to equivalent Enum value
Is it possible for me to convert a String to an equivalent value in an Enumeration , using Java.
4 Answers
...
How to get just the parent directory name of a specific file
...
Use File's getParentFile() method and String.lastIndexOf() to retrieve just the immediate parent directory.
Mark's comment is a better solution thanlastIndexOf():
file.getParentFile().getName();
These solutions only works if the file has a parent file (e.g.,...
What format string do I use for milliseconds in date strings on iPhone?
I'm required to parse strings in a format that includes milliseconds. What format string do I use to get the right date value?
...