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What's the difference between a proc and a lambda in Ruby?
...g lambda {} gives you a proc that checks the number of arguments passed to it. From ri Kernel#lambda:
Equivalent to Proc.new, except the resulting Proc objects check the number of parameters passed when called.
An example:
p = Proc.new {|a, b| puts a**2+b**2 } # => #<Proc:0x3c7d28@(irb)...
How to wait 5 seconds with jQuery?
...tion()
{
//do something special
}, 5000);
UPDATE: you want to wait since when the page has finished loading, so put that code inside your $(document).ready(...); script.
UPDATE 2: jquery 1.4.0 introduced the .delay method. Check it out. Note that .delay only works with the jQuery effects...
MongoDB relationships: embed or reference?
...m a relational database background. I want to design a question structure with some comments, but I don't know which relationship to use for comments: embed or reference ?
...
Easiest way to convert int to string in C++
... each numeric type) and std::to_string, the counterparts of the C atoi and itoa but expressed in term of std::string.
#include <string>
std::string s = std::to_string(42);
is therefore the shortest way I can think of. You can even omit naming the type, using the auto keyword:
auto s = st...
How do I implement basic “Long Polling”?
...
It's simpler than I initially thought.. Basically you have a page that does nothing, until the data you want to send is available (say, a new message arrives).
Here is a really basic example, which sends a simple string afte...
Static/Dynamic vs Strong/Weak
...
Static/Dynamic Typing is about when type information is acquired (Either at compile time or at runtime)
Strong/Weak Typing is about how strictly types are distinguished (e.g. whether the language tries to do an implicit conversion from strings to numbers).
See the wiki-page for more detail...
Does Java have a path joining method? [duplicate]
... 7 and earlier.
To quote a good answer to the same question:
If you want it back as a string later, you can call getPath(). Indeed, if you really wanted to mimic Path.Combine, you could just write something like:
public static String combine (String path1, String path2) {
File file1 = new Fil...
I'm getting Key error in python
...follow
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edited Jun 14 '17 at 9:01
maxkoryukov
2,19922 gold badges2121 silver badges4141 bronze badges
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Cannot set some HTTP headers when using System.Net.WebRequest
...right to the last section of the answer.
If you want to know better, read it all, and i hope you'll enjoy...
I countered this problem too today, and what i discovered today is that:
the above answers are true, as:
1.1 it's telling you that the header you are trying to add already exist and yo...
Running SSH Agent when starting Git Bash on Windows
I am using git bash. I have to use
8 Answers
8
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