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How to remove negative sign from LINQ output [closed]

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Closed 9 years ago.
i have following linq used in my application
var FinalSubExpired = subExpired.Where(e => (DateTime.Now - Convert.ToDateTime(e.AreasOfLawTillDate)).TotalDays <= 30 ).ToList();
which returns the total days with negative values, i need to remove that negative sign from that total days. how can i do that by modifying this linq?
Please help.

var FinalSubExpired = subExpired.Where(e => Math.Abs((DateTime.Now - Convert.ToDateTime(e.AreasOfLawTillDate)).TotalDays) <= 30).ToList();
that should do the trick

try and use Math.Abs inside your Linq query, as:
var FinalSubExpired = subExpired.Where(e => (Math.Abs(DateTime.Now - Convert.ToDateTime(e.AreasOfLawTillDate)).TotalDays) <= 30 ).ToList();

C# reset many integer variables quicker [closed]

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Closed 10 years ago.
Is there a way to reset these variables quicker like at the time of declaration?
Declaration:
int numa1, numa2, numa3, numd1, numd2, numd3;
Reset afterwards:
numa1 = 0;
.
.
.
numd3 = 0;
Because I will change these variables, but then I need to reset them as 0, OK?
Replying the comments below:
Sorry, I didn't change "Reset afterward" to "Initializes afterward". Someone else did that.
Sorry, but you cannot change the values of the variables like:
numa1, numa2, numa3, numd1, numd2, numd3 = 0;
I tried and I received Error 1, 2, 4.

By quicker if you mean faster, I donot think there is any better alternative.
If you mean reducing some lines,
You can choose either
int numa1=0, numa2=0, numa3=0, numd1=0, numd2=0, numd3 = 0;
or
int numa1, numa2, numa3, numd1, numd2, numd3 = 0;
numa1= numa2= numa3= numd1= numd2= numd3;

I guess that you should have used two arrays, I never had a function that used so many variables with such names (sequential numbers).
If you'd use arrays, Your code will look like this :
int[] numa = new [] {0,0,0,0};
int[] numd = new [] {0,0,0,0};
But this is up to you.
For more information about arrays

Convert int(round(time.time())) to C# [closed]

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Closed 10 years ago.
I am trying to convert this python instruction to C#
int(round(time.time()))
But I cannot figure out what it does exactly.

You need to use UtcNow as opposed to Now or else you will get an answer offset by your timezone.
TimeSpan t = (DateTime.UtcNow - new DateTime(1970, 1, 1));
int timestamp = (int) t.TotalSeconds;

time.time() will return the current time as a float which represents seconds since 1/1/1970, round() will round that float to the nearest integer value, and int() will convert the value to the integer type.
For example:
>>> time.time()
1351702579.645324
>>> round(time.time())
1351702580.0
>>> int(round(time.time()))
1351702580

Convert double array to list [closed]

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Closed 10 years ago.
txt file that contains several columns of numbers, every column is saved in a double array, what I want to do is get the average of a specific column, but to do that I have to convert the array to a list and then began to calculate. I have this code so far:
List<double> 1 = new List<double>(NumSepaERG);
List<double> 12 = NumSepaERG.ToList();
But i get and error of Invalid Expression term double

Variable names can't start with a numeric character. Change to something like:
List<double> list1 = new List<double>(NumSepaERG);
but you can compute an average using Linq without converting to a list:
double average = NumSepaERG.Average();
If NumSepaERG is a jagged array (an array of arrays), the syntax would be:
double average = NumSepaERG[i].Average();
where i is between 0 and the number of arrays - 1;

I think it's a syntax error, you can't have numbers as variable names. You actually don't even need to make it a list.
double average = NumSepERG.Average();

How to use .NET Regex to express positive numbers with decimal [closed]

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Closed 11 years ago.
How can use regular express to express the positive amount with most 20 digits in integral and 6 decimals, such as 0.25, 1234566789.123456?
Thank you.

var regexStr = #"^\d{1,20}(\.\d{1,6})?$";
var r = Regex.Match("15", regexStr); // match 15
r = Regex.Match("15.158", regexStr); // match 15.158
r = Regex.Match("-22.9", regexStr); // fail, negative
r = Regex.Match("123456789012345678901.1234567", regexStr); // fail, too long
r = Regex.Match("-123456789012345601.123456", regexStr); // fail, negative
r = Regex.Match("123456789012345601.123456", regexStr); // match 123456789012345601.123456

try this:
^\d{1,20}(.\d{1,6})?$

Try this:
(?<![-\d\.]) \d{1,20} (\.\d{1,6})? \b
Test cases:
0.25, 1234566789.123456, 5.66, -12345678901234567890.1, 12345678901234567890.1, 5

There you go : #"^[0-9]{1,20}(\.[0-9]{1,6})?$"