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Random alpha-numeric string in JavaScript? [duplicate]
...16, 'aA'));
console.log(randomString(32, '#aA'));
console.log(randomString(64, '#A!'));
Fiddle: http://jsfiddle.net/wSQBx/2/
Alternatively, to use the base36 method as described below you could do something like this:
function randomString(length) {
return Math.round((Math.pow(36, length + 1...
When are you truly forced to use UUID as part of the design?
...n 4 UUID, even if you're generating quite a few UUIDs per second.
Also, 2^64 * 16 is 256 exabytes. As in, you would need to store 256 exabytes worth of IDs before you had a 50% chance of an ID collision in a single application space.
...
How to find the Windows version from the PowerShell command line
...rkstation
OS Build Type : Multiprocessor Free
System Type : x64-based PC
System Locale : ru;Russian
Hotfix(s) : 274 Hotfix(s) Installed.,[01]: KB2849697,[02]: KB2849697,[03]:...
Windows 10 output for the same command:
OS Name : Microsoft Windows 10 Enterp...
How does the ARM architecture differ from x86? [closed]
...
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How can I change Mac OS's default Java VM returned from /usr/libexec/java_home
...c/java_home -verbose
Matching Java Virtual Machines (3):
1.7.0_45, x86_64: "Java SE 7" /Library/Java/JavaVirtualMachines/jdk1.7.0_45.jdk/Contents/Home
1.7.0_09, x86_64: "Java SE 7" /Library/Java/JavaVirtualMachines/jdk1.7.0_09.jdk/Contents/Home
!1.8.0, x86_64: "Java SE 8" /Library/Ja...
How to request Administrator access inside a batch file
...This script is now slightly edited to support command line arguments and a 64 bit OS.
Thank you Eneerge @ https://sites.google.com/site/eneerge/scripts/batchgotadmin
@echo off
:: BatchGotAdmin
:-------------------------------------
REM --> Check for permissions
IF "%PROCESSOR_ARCHITECTURE...
How do I provide custom cast support for my class?
... explicit.
The syntax is like this:
public static implicit operator dbInt64(Byte x)
{
return new dbInt64(x);
}
or
public static explicit operator Int64(dbInt64 x)
{
if (!x.defined)
throw new DataValueNullException();
return x.iVal;
}
For your example, say from your custom ...
console.log timestamps in Chrome?
...
70.0.3538.110 (Official Build) (64-bit) This answer once worked for me: i.e. console "gear icon"; "Show timestamps" checkmark ... but now I don't see "Show timestamps" in Chrome 70.0.3538.110 (Official Build) (64-bit) So I tried @tekiegirl's suggestion r...
Why do stacks typically grow downwards?
... written, so that it would know the actual RAM installed (e.g., a z80 with 64K address space didn't necessarily have 64K or RAM, in fact 64K would have been massive in my early days). Once it found the top actual address, it would set the stack pointer appropriately and could then start calling subr...
What is the difference between a cer, pvk, and pfx file?
...cate. These can be in "binary" (ASN.1 DER), or it can be encoded with Base-64 and have a header and footer applied (PEM); Windows will recognize either. To verify the integrity of a certificate, you have to check its signature using the issuer's public key... which is, in turn, another certificate.
...