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Best way to write to the console in PowerShell
... writes to the console, not to the pipeline (Do-Something will not get the string):
Write-Host "hello world" | Do-Something
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Reorder levels of a factor without changing order of values
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I wish to add another case where the levels could be strings carrying numbers alongwith some special characters : like below example
df <- data.frame(x = c("15-25", "0-4", "5-10", "11-14", "100+"))
The default levels of x is :
df$x
# [1] 15-25 0-4 5-10 11-14 100+
# L...
What is the difference between the | and || or operators?
...c class Driver {
static int x;
static int y;
public static void main(String[] args)
throws Exception {
System.out.println("using double pipe");
if(setX() || setY())
{System.out.println("x = "+x);
System.out.println("y = "+y);
}
System.out.println("using single ...
How to rethrow InnerException without losing stack trace in C#?
...lls SetObjectData
// voila, e is unmodified save for _remoteStackTraceString
}
This wastes a lot of cycles compared to calling InternalPreserveStackTrace via cached delegate, but has the advantage of relying only on public functionality. Here are a couple of common usage patterns for stack-tr...
Best way to test SQL queries [closed]
...nd a case statement catenated together. The test name is just an arbitrary string. The case statement is just case when test statements then 'passed' else 'failed' end.
The test statements will just be SQL selects (subqueries) that must be true for the test to pass.
Here's our first test:
--a s...
Why does Maven warn me about encoding?
...er encoding scheme to be applied when filtering resources.
Type: java.lang.String
Required: No
User Property: encoding
Default: ${project.build.sourceEncoding}
So this means you only need to define this property and the plugin will automatically use this encoding.
...
Loop through all nested dictionary values?
...lso easy to modify it to track the prefix as a tuple of keys rather than a string if you need it that way.
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Warning: push.default is unset; its implicit value is changing in Git 2.0
...than the instruction telling us to open the documentation and search for a string.
– hertzsprung
Aug 4 '13 at 17:18
116
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What's a good way to overwrite DateTime.Now during testing?
...his. Suppose I had the following class:
public class MyClass
{
public string WhatsTheTime()
{
return DateTime.Now.ToString();
}
}
In Visual Studio 2012 you can add a Fakes assembly to your test project by right clicking on the assembly you want to create Fakes/Shims for and s...
How do you perform a CROSS JOIN with LINQ to SQL?
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The same thing with linq extension methods:
var names = new string[] { "Ana", "Raz", "John" };
var numbers = new int[] { 1, 2, 3 };
var newList=names.SelectMany(
x => numbers,
(y, z) => { return y + z + " test "; });
foreach (var item in newList)
{
Console.WriteLine(...