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How does a hash table work?
...et another spot in the table (double hashing), or simply to find a space close to the one you were given (i.e. right next to the previous book assuming the slot was available also known as linear probing). This would mean that you have some digging to do when you try to find the book later, but it's...
Using Auto Layout in UITableView for dynamic cell layouts & variable row heights
...DR: Don't like reading? Jump straight to the sample projects on GitHub:
iOS 8 Sample Project - Requires iOS 8
iOS 7 Sample Project - Works on iOS 7+
Conceptual Description
The first 2 steps below are applicable regardless of which iOS versions you are developing for.
1. Set Up & Add Constr...
内存管理内幕：动态分配的选择、折衷和实现 - C/C++ - 清泛网 - 专注C/C++及内核技术
...unistd.h>
void malloc_init()
{
/* grab the last valid address from the OS */
last_valid_address = sbrk(0);
/* we don't have any memory to manage yet, so
*just set the beginning to be last_valid_address
*/
managed_memory_start = last_valid_address;
/* Okay, we're initialized and rea...
OceanBase使用libeasy原理源码分析：服务器端 - 数据库(内核) - 清泛网 - ...
...easy_list_for_each_entry_safe：
#define easy_list_for_each_entry_safe(pos, n, head, member) \
for (pos = easy_list_entry((head)->next, typeof(*pos), member), \
n = easy_list_e...
Ship an application with a database
...pp.Activity;
import android.database.sqlite.SQLiteDatabase;
import android.os.Bundle;
/**
* @author Danny Remington - MacroSolve
*
* Activity for demonstrating how to use a sqlite database.
*/
public class Database extends Activity {
/** Called when the activity is first created. ...
What is the maximum length of a URL in different browsers?
...Ls are usually a
mistake. URLs over 2,000 characters
will not work in the most popular web
browsers. Don't use them if you intend
your site to work for the majority of
Internet users.
(Note: this is a quote from an article written in 2006, but in 2015 IE's declining usage means that longer URLs do ...
Python base64 data decode
...
(I know this is old but I wanted to post this for people like me who stumble upon it in the future)
I personally just use this python code to decode base64 strings:
print open("FILE-WITH-STRING", "rb").read().decode("base64")
So you can run it in a bash scrip...
Split string into an array in Bash
...by itself. It can't tell the difference between commas inside quotes and those outside them. You will need to use a tool that understands CSV such as a lib in a higher level language, for example the csv module in Python.
– Paused until further notice.
Sep 8 '1...
动态追踪（Dynamic Tracing）技术漫谈 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...于 21 世纪初诞生于 Solaris 操作系统，是由原来的 Sun Microsystems 公司的工程师编写的。可能很多同学都听说过 Solaris 系统和 Sun 公司的大名。
最初产生的时候，我记得有这样一个故事，当时 Solaris 操作系统的几个工程师花了几天...
How does the Windows Command Interpreter (CMD.EXE) parse scripts?
...aracter is escaped, and the escaping caret is removed. Escaped characters lose all special meaning (except for <LF>).
If a quote ("), toggle the quote flag. If the quote flag is active, then only " and <LF> are special. All other characters lose their special meaning until the next quote...