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What is a “surrogate pair” in Java?
...ings of Unicode text. In UTF-16, 16-bit (two-byte) code units are used. Since 16 bits can only contain the range of characters from 0x0 to 0xFFFF, some additional complexity is used to store values above this range (0x10000 to 0x10FFFF). This is done using pairs of code units known as surrogates.
T...
PHP: How to generate a random, unique, alphanumeric string for use in a secret link?
...
Security Notice: This solution should not be used in situations where the quality of your randomness can affect the security of an application. In particular, rand() and uniqid() are not cryptographically secure random number generators. ...
How does this milw0rm heap spraying exploit work?
...y instructions that will do the actual exploit. spray creates a long sequence of instructions that will be put in memory. Since we can't usually find out the exact location of our shellcode in memory, we put a lot of nop instructions before it and jump to somewhere there. The memory array will hold ...
How can I make Visual Studio's build be very verbose?
...and and build it from a dos console msdn.microsoft.com/en-us/library/txcwa2xx(VS.80).aspx. Last time I did something similar (but I used CMake to generate the nmake makefiles) all the commands were printed out into the console display.
– javier-sanz
Jul 31 '09 ...
How do I execute inserts and updates in an Alembic upgrade script?
...tion.
"""create teams table
Revision ID: 169ad57156f0
Revises: 29b4c2bfce6d
Create Date: 2014-06-25 09:00:06.784170
"""
revision = '169ad57156f0'
down_revision = '29b4c2bfce6d'
from alembic import op
import sqlalchemy as sa
from sqlalchemy import orm
from sqlalchemy.ext.declarative import decl...
Can a Windows batch file determine its own file name?
... On Win2012, %cd% will return the Current Directory of the process that called the batch file. So, if you are at a prompt in D:\dir1 and enter Y:\foo\bar.bat, if bar.bat has @echo %cd% then it will output D:\dir1.
– Preacher
Jun 28 '18 at 21:56
...
Loop through an array of strings in Bash?
...e array is missing elements. For example, if you have array elements A[1]='xx', A[4]='yy' and A[9]='zz', the length will be 3 and the loop won't process all the elements.
– Mr Ed
Dec 12 '17 at 9:18
...
Creating multiline strings in JavaScript
...String().match(/[^]*\/\*([^]*)\*\/\}$/)[1];
external edit: jsfiddle
ES20xx supports spanning strings over multiple lines using template strings:
let str = `This is a text
with multiple lines.
Escapes are interpreted,
\n is a newline.`;
let str = String.raw`This is a text
with mul...
Java 7 language features with Android
...nguage should be enabled automatically without any patches. Try-with-resource requires API Level 19+, and NIO 2.0 stuff are missing.
If you can't use Java 7 features, see @Nuno's answer on how to edit your build.gradle.
The following is for historical interest only.
A small part of Java 7 can ...
How to estimate a programming task if you have no experience in it [closed]
... risk factors and come up with a checklist of deliverables to test them in xx days. At that point I'll give you another incremental estimate."
And it would be real nice if you could suggest that they should "Please insist that I never try to give you a credible estimate of that type in the future. ...