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C# Lambda expressions: Why should I use them?
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84
I found them useful in a situation when I wanted to declare a handler for some control's event,...
Difference between map, applymap and apply methods in Pandas
... b d e
Utah -0.029638 1.081563 1.280300
Ohio 0.647747 0.831136 -1.549481
Texas 0.513416 -0.884417 0.195343
Oregon -0.485454 -0.477388 -0.309548
In [118]: f = lambda x: x.max() - x.min()
In [119]: frame.apply(f)
Out[119]:
b 1.133201
d 1.965980
e 2.829781
dt...
What's with 181783497276652981 and 8682522807148012 in Random (Java 7)?
...ses a multiplicative linear congruential generator (MLCG) with c=0 and m=2^64. (The modulus 2^64 is implicitly given by the overflow of 64bit long integers)
Because of the zero c and the power-of-2-modulus, the "quality" (cycle length, bit-correlation, ...) is limited. As the paper says, besides the...
How to validate an e-mail address in swift?
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let emailRegEx = "[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,64}"
let emailPred = NSPredicate(format:"SELF MATCHES %@", emailRegEx)
return emailPred.evaluate(with: email)
}
for versions of Swift earlier than 3.0:
func isValidEmail(email: String) -> Bool {
let emailRe...
What is the best project structure for a Python application? [closed]
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cmcgintycmcginty
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Manually map column names with class properties
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84
This works fine:
var sql = @"select top 1 person_id PersonId, first_name FirstName, last_name ...
Why should I use IHttpActionResult instead of HttpResponseMessage?
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84
You can still use HttpResponseMessage. That capability will not go away. I felt the same way as...
Removing trailing newline character from fgets() input
...8:55
P.P
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answered Apr 22 '10 at 19:26
James Morr...
How to convert an IPv4 address into a integer in C#?
...ses. Meanwhile, the IPAddress.Address property, while deprecated, is an Int64 that returns the unsigned 32-bit value of the IPv4 address (the catch is, it's in network byte order, so you need to swap it around).
For example, my local google.com is at 64.233.187.99. That's equivalent to:
64*2^24 + ...
Create ArrayList from array
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@Adam Please study the javadoc for java.util.List. The contract for add allows them to throw an UnsupportedOperationException. docs.oracle....