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How is the default submit button on an HTML form determined?
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answered May 29 '09 at 10:41
Andrzej DoyleAndrzej Doyle
95.5k2929 gold badges181181 silver badges224224 bronze badges
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Convert Unix timestamp to a date string
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With GNU's date you can do:
date -d "@$TIMESTAMP"
# date -d @0
Wed Dec 31 19:00:00 EST 1969
(From: BASH: Convert Unix Timestamp to a Date)
On OS X, use date -r.
date -r "$TIMESTAMP"
Alternatively, use strftime(). It's not available directly from the shell, but you can access it v...
How do I sort strings alphabetically while accounting for value when a string is numeric?
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104
Pass a custom comparer into OrderBy. Enumerable.OrderBy will let you specify any comparer you l...
Facebook Callback appends '#_=_' to Return URL
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edited Oct 16 '13 at 21:07
answered Sep 4 '11 at 7:14
Rya...
Are there legitimate uses for JavaScript's “with” statement?
...osure in a loop is a common task where this can lead to errors:
for (var i=0; i<3; ++i)
{
var num = i;
setTimeout(function() { alert(num); }, 10);
}
Because the for loop does not introduce a new scope, the same num - with a value of 2 - will be shared by all three functions.
A new scope: l...
List of ANSI color escape sequences
On most terminals it is possible to colorize output using the \033 ANSI escape sequence.
5 Answers
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Function for Factorial in Python
...actorial (available in Python 2.6 and above):
import math
math.factorial(1000)
If you want/have to write it yourself, you can use an iterative approach:
def factorial(n):
fact = 1
for num in range(2, n + 1):
fact *= num
return fact
or a recursive approach:
def factorial(n)...
How to set a default value for a datetime column to record creation time in a migration?
...e is a sample migration:
class CreatePosts < ActiveRecord::Migration[5.0]
def change
create_table :posts do |t|
t.datetime :modified_at, default: -> { 'CURRENT_TIMESTAMP' }
t.timestamps
end
end
end
See discussion at https://github.com/rails/rails/issues/27077 and an...
Why is a combiner needed for reduce method that converts type in java 8
...ch; int cannot be converted to java.lang.String. Actually, I think passing 0 as the identity value is also wrong here, since a String is expected (T).
Also note that this version of reduce processes a stream of Ts and returns a T, so you can't use it to reduce a stream of String to an int.
The thr...
How do I check CPU and Memory Usage in Java?
...ime.freeMemory();
sb.append("free memory: " + format.format(freeMemory / 1024) + "<br/>");
sb.append("allocated memory: " + format.format(allocatedMemory / 1024) + "<br/>");
sb.append("max memory: " + format.format(maxMemory / 1024) + "<br/>");
sb.append("total free memory: " + fo...