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Understanding the Rails Authenticity Token
...could just send an HTTP request to the server saying GET /transfer?amount=$1000000&account-to=999999, right?
Wrong. The hackers attack won't work. The server will basically think?
Huh? Who is this guy trying to initiate a transfer. It's not the owner of the account, that's for sure.
How...
How to get a random number in Ruby
...ull blown framework:
require 'securerandom'
p SecureRandom.random_number(100) #=> 15
p SecureRandom.random_number(100) #=> 88
p SecureRandom.random_number #=> 0.596506046187744
p SecureRandom.random_number #=> 0.350621695741409
p SecureRandom.hex #=> "eb693ec8252cd630102fd0d0fb7c3...
Is it a bad practice to use negative margins in Android?
...
@100kg: Sorry, but that is not supported.
– CommonsWare
Apr 8 '13 at 14:48
21
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How to get the separate digits of an int number?
I have numbers like 1100, 1002, 1022 etc. I would like to have the individual digits, for example for the first number 1100 I want to have 1, 1, 0, 0.
...
Find out whether Chrome console is open
...resize = function() {
if ((window.outerHeight - window.innerHeight) > 100) {
alert('Docked inspector was opened');
}
}
share
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How to check if element is visible after scrolling?
...nobserve(entry.target)
span{ position:fixed; top:0; left:0; }
.box{ width:100px; height:100px; background:red; margin:1000px; transition:.5s; }
.box.visible{ background:green; }
<span>Scroll both Vertically &amp; Horizontally...</span>
<div class='box'></div>
Vie...
What does “Memory allocated at compile time” really mean?
...the process memory map.
For example, consider a global array:
int array[100];
The compiler knows at compile-time the size of the array and the size of an int, so it knows the entire size of the array at compile-time. Also a global variable has static storage duration by default: it is allocated...
How to stop a goroutine
...c do_stuff() int {
return 1
}
func main() {
ch := make(chan int, 100)
done := make(chan struct{})
go func() {
for {
select {
case ch <- do_stuff():
case <-done:
close(ch)
return
}
...
input type=file show only button
... background-color: #DDF;
}
.fileInput {
cursor: pointer;
height: 100%;
position:absolute;
top: 0;
right: 0;
z-index: 99;
/*This makes the button huge. If you want a bigger button, increase the font size*/
font-size:50px;
/*Opacity settings for all browsers*/
...
SELECT INTO a table variable in T-SQL
...ate a temp table :
Step 1:
create table #tblOm_Temp (
Name varchar(100),
Age Int ,
RollNumber bigint
)
**Step 2: ** Insert Some value in Temp table .
insert into #tblom_temp values('Om Pandey',102,1347)
Step 3: Declare a table Variable to hold temp table data.
declare @tblOm_...