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Add Keypair to existing EC2 instance
...ly want to fix your files, here is the approach that has worked for many:
Setup
Identify the original instance (A) and volume that contains the broken root EBS volume with the files you want to view and edit.
instance_a=i-XXXXXXXX
volume=$(ec2-describe-instances $instance_a |
egrep '^BLOCKDEVI...
Why are local variables not initialized in Java?
...eclared mostly to do some calculation. So its the programmer's decision to set the value of the variable and it should not take a default value. If the programmer, by mistake, did not initialize a local variable and it take default value, then the output could be some unexpected value. So in case of...
Why do people say there is modulo bias when using a random number generator?
...o Bias is the inherent bias in using modulo arithmetic to reduce an output set to a subset of the input set. In general, a bias exists whenever the mapping between the input and output set is not equally distributed, as in the case of using modulo arithmetic when the size of the output set is not a ...
Declare a const array
...y as "readonly". This has the
same effect as const except the value can be set at runtime. It can only be
set once and it is thereafter a readonly (i.e. const) value.
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Why use ICollection and not IEnumerable or List on many-many/one-many relationships?
...
}
}
class Person
{
public string Name { get; set; }
public int Age { get; set; }
public Person(string name, int age)
{
this.Name = name;
this.Age = age;
}
}
}
...
Dynamically update values of a chartjs chart
I created an basic bar chart using chartjs and it works fine. Now I want to update the values on a time based interval. My problem is that after I created the chart, I do not know how to update its values correctly...
...
What's the difference between a temp table and table variable in SQL Server?
...st run on an instance started in single user mode and using sqlcmd mode)
:setvar tablename "@T"
:setvar tablescript "DECLARE @T TABLE"
/*
--Uncomment this section to test a #temp table
:setvar tablename "#T"
:setvar tablescript "CREATE TABLE #T"
*/
USE tempdb
GO
CHECKPOINT
DECLARE @LSN N...
Programmatically retrieve memory usage on iPhone
...
let TASK_VM_INFO_REV1_COUNT = mach_msg_type_number_t(MemoryLayout.offset(of: \task_vm_info_data_t.min_address)! / MemoryLayout<integer_t>.size)
var info = task_vm_info_data_t()
var count = TASK_VM_INFO_COUNT
let kr = withUnsafeMutablePointer(to: &info) { infoPtr in ...
OpenJDK availability for Windows OS [closed]
...ing systems.
To configure it, create a JAVA_HOME environment variable and set it to C:\OpenSCG\openjdk-6.0.24 or whatever is the current version. Then add %JAVA_HOME%\bin; to the beginning of your PATH environment variable.
You can edit your environment variables by contextual clicking (My) Compu...
Facebook Callback appends '#_=_' to Return URL
...Please ensure that your app can handle this
behavior.
To prevent this, set the redirect_uri in your login url request like so: (using Facebook php-sdk)
$facebook->getLoginUrl(array('redirect_uri' => $_SERVER['SCRIPT_URI'],'scope' => 'user_about_me'));
UPDATE
The above is exactly as ...