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What's the difference between a proc and a lambda in Ruby?
...cept 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):1>
p.call 1, 2 # => 5
p.call 1 # => NoMethodError: undefined method `**' for nil:NilClass
p.call 1, 2, 3 # => 5
l = lam...
Using awk to remove the Byte-order mark
...big directory tree to find the one that was with BOM. Found an application called Replace Pioneer and in it:
Batch Runner -> Search (to find all the files in the subfolders) -> Replace Template -> Binary remove BOM (there is a ready made search and replace template for this).
It was not...
int to hex string
...
Try C# string interpolation introduced in C# 6:
var id = 100;
var hexid = $"0x{id:X}";
hexid value:
"0x64"
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Differences between SP initiated SSO and IDP initiated SSO
...ne explain to me what the main differences between SP initiated SSO and IDP initiated SSO are, including which would be the better solution for implementing single sign on in conjunction with ADFS + OpenAM Federation?
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How do I save and restore multiple variables in python?
...
There is a built-in library called pickle. Using pickle you can dump objects to a file and load them later.
import pickle
f = open('store.pckl', 'wb')
pickle.dump(obj, f)
f.close()
f = open('store.pckl', 'rb')
obj = pickle.load(f)
f.close()
...
Make div stay at bottom of page's content all the time even when there are scrollbars
...ixed was designed for:
#footer {
position: fixed;
bottom: 0;
width: 100%;
}
Here's the fiddle: http://jsfiddle.net/uw8f9/
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App Inventor 2 SQLite 拓展：超流行兼容主流SQL语法的迷你本地数据库引擎...
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创建一个测试数据表，sql如下：
CREATE TABLE users (
id INTEGER PRIMARY KEY,
name TEXT,
age INTEGER);
数据表信息
这时，可以查看一下表信息：
插入数据
往 users 表中插入一条测试数据...
Citing the author of a blockquote using Markdown syntax
...mmendations. Given that spoken speeches, not just publications, can be typically cited in an academic work, I'm comfortable calling that a citation on the web too.
– ceejayoz
Sep 8 '12 at 16:43
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Simple basic explanation of a Distributed Hash Table (DHT)
... first variable is the key of the object to be stored in the table. We'll call the key "x". The second variable is is the number of buckets, "n". So, to determine which bucket/machine the object is stored in, you have to calculate: hash(x) mod(n). Therefore, when you change the number of bucket...
How to read a single char from the console in Java (as the user types it)?
...
I have written a Java class RawConsoleInput that uses JNA to call operating system functions of Windows and Unix/Linux.
On Windows it uses _kbhit() and _getwch() from msvcrt.dll.
On Unix it uses tcsetattr() to switch the console to non-canonical mode, System.in.available() to check w...