You may already be a veteran of PHP and write a lot of great code. But is it a bit of a struggle if you want to add them to your current project now? Your friend wants to use your code as a module in his project, but you find that you are using a
Tags: API start nan proxy min creat asto lis StyleDatabase Services-Installation and configuration:Control node Operations:Prerequisite:1, the following operation.# mysql-u root-p***> CREATE DATABASE trove;> GRANT all privileges on trove.* to ' trove ' @ ' localhost ' identified by ' Trove_dbpass ';> GRANT all privileges on t
, similar to the built-in macro _ line _ in C Language __
$ FuncnameThe function name is similar to the built-in macro _ FUNC __in C language. However, macro _ FUNC _ can only represent the name of the current function, while $ funcname is more powerful, it is an array variable that contains the names of all functions in the call chain. Therefore, the variable $ {funcname [0]} represents the name of the function currently being executed by the shell script, the variable $ {funcname [1]} indicate
. Fortunately, we can use some of the shell's built-in environment variables to enhance the output information of the "-X" option, which introduces several shell-built environment variables:$LINENO represents the current line number of the shell script, similar to the built-in macro in C __line__The name of the $FUNCNAME function, similar to the built-in macro __func__ in C, but the macro __func__ can only represent the current function name, and $funcname is more powerful, it is an array variab
Introduction to OpenStack Components Parsing (Advanced)Learning Goals:
Mastering the architecture and functionality of more components
The contents of this note are:
Ceilmeter Component Parsing
Heat Component Parsing
Trove Component Parsing
Sahara Component Parsing
Ironic component parsing
1. Ceilometer Component ParsingAlso known as OpenStack Telemetry ( remote measurement data collection ), OpenStack is a
several shell-built environment variables: $LINENORepresents the current line number of the shell script, similar to the built-in macro in C __line__ $FUNCNAMEThe name of the function, similar to the built-in macro __func__ in C, but the macro __func__ can only represent the current function name, and $funcname is more powerful, it is an array variable containing all the functions on the entire call chain name, so the variable ${funcname [0 ]} represents the name of the function that the shell
script is currently executing, and the variable ${funcname[1]} represents the name of the function that called the function ${funcname[0]}, and so on.$PS 4The main prompt variable $PS1 and the second-level prompt variable $ps2 are more common, but few people notice the effect of the fourth-level prompt variable $PS4. We know that using the "-X" execution option will show each command that was actually executed in the shell script, and that the value
A place like the Dragon 0 oath This generation of home machine re-depicted in the city of Jimbochothe world of [the violence of the Golden Woman]This is the first time series in the game depicting [such as Dragon] prequel works because it was the first time that PS4 was portrayedThe work of the studio-cho, which is the gorgeous and messy mix of the economic bubble period, completes the new discoveries and fresh qualities of the player. pre-made 1.5
variable containing all the functions on the entire call chain name, so the variable ${funcname[0 ]} represents the name of the function that the shell script is currently executing, and the variable ${funcname[1]} represents the name of the function that called the function ${funcname[0]}, and so on.
$PS 4The main prompt variable $PS1 and the second-level prompt variable $ps2 are more common, but few people notice the effect of the fourth-level prompt variable $
, such as P = (p + increment (key) mod slot_length, increment is another hash algorithm. The following is a simple example:
H (key) = Key mod 10Increment (key) = 1 + (Key mod 7)P (15): H (15) = 5;P (35): H (35) = 5, which is in conflict with P (15). Therefore, a probe is required. The position is (5 + increment (35) mod 10 = 6.P (25): H (25) = 5, which is in conflict with P (15). Therefore, a probe is required. The position is (5 + increment (25) mod 10 = 0.
P (75): H (75) = 5, which is in confl
Hacker successfully cracked PlayStation 4 support running LinuxA Brazilian team claimed that the first time the PS4 jailbreak was successful, involved a cumbersome set of procedures that required the use of a Raspberry Pi to replicate the entire hacker's hard drive, and it was not until the month that it bypassed Sony's content protection.Since Sony PlayStation 4 has been on sale for two years, the hacker door has always wanted to enjoy the fun of cra
AutoJar and so on to automatically extract the required class.
Similar technologies: HPPC, Koloboke, GS Collections, Trove Collections, Mahout Collections
Fastutil is currently the latest version 7.0.10, the latest JAR package fastutil-7.0.10.jar size is 17 MB. Its Maven dependency is:
it.unimi.dsi
fastutil
7.0.10
Fastutil 6 is enhanced in terms of big data and provides a new set of classes to process large se
option is enabled, and set + parameter means that an option is turned off. Sometimes we don't need to use the "-X" option at startup to keep track of all the command lines, so we can work with the set command in the script.For example:1.1 #!/bin/bashIsRoot () {If ["$UID"-ne 0]Return 1Elsereturn 0Fi}IsRootIf ["$?"-ne 0]Thenecho "must is root to run this script"Exit 1Elseecho "Welcome root user"#do somethingFi#首先使用sh-n test.sh check for syntax errors. If there is one, then SH test.sh executes the
Http://www.byywee.com/page/M0/S931/931767.htmlRun the core of the rejoin-stack.sh script:EXEC screen-c $TOP _DIR/STACK-SCREENRCSTACK-SCREENRC File Store startup information:such as the start of troveScreen-t tr-api bashstuff "/usr/local/bin/trove-api--config-file=/etc/trove/trove.conf--debug^M" Logfile/opt/stack /logs/screen-tr-api.2015-01-09-134837.loglog onscreen-t tr-tmgr Bashstuff "/usr/local/bin/
, which gives the player more space to play. Each PS move game will have its own correction method, correct the player's position in the camera, the main handle light ball color and so on.In fact, Sony in the PS3 period, by the Xbox 360 in the body sense of the impact of design, seems to have been a bit passive, the development of a separate camera and move body sense controller, but the effect is not ideal, the former and game combination of functional design is very limited, the latter support
Large HashMap overview:jdk, Fastutil, Goldman Sachs, HPPC, Koloboke, trove-january version:a Quick overview of Al L Major Libraries implementing hashmaps.
Fastutil 6.6.0turned out to be consistently fast. It may become even faster if it would introduce any other storage structures except 2 arrays for keys and values.
Kolobokeis getting second in many tests, but it still outperforms fastutil in int-int tests.
Gsimplementation is g
default shader compiles all renderers#pragma multi_compile names--------------------------------for multiple materialsEach fragment must contain at least one vertex program and one fragment program. So # pragma vertices and # pragma fragment directives are required.Shader Targetby default, Unity compiles shaders into approximately equal to 2.0 material models #pragma target 2.0 (default)---- Shading Model 2.0 Direct3D 9--- ----limited arithmetic and material descriptions, no vertex texture samp
thread is running, greatly improving the frequent execution of the "Stop-the-world" situation. G1 for JVMs with a large heap of memoryShow better performance and have a better predictable and unified pause process.
Tip #1: Predicting the capacity of a collection
All standard Java collections, including custom and extended implementations (such as Trove and Google's guava), use arrays (native data types or object-based types) at the
2014 can be said to be the rapid development of the game industry, and experience a change in the year. Not only Sony PS4, Microsoft Xbox One two new game host has been officially listed, some years ago can not achieve the technology is expected to develop and grow this year, such as the cloud gaming platform, augmented reality experience, and so on, below to understand.
I. Cloud platform and streaming technology
Cloud, streaming form
of multicore machines to achieve multi-threaded garbage collection. And after the CMS (Concurrent mark-sweep) collector, the collection is divided into multiple stages to run. Agree to do a lot of collection at the same time that the application thread runs. Significantly reduces the frequency of "stop-the-world" global pauses. Now, G1 has added a lot of heap and pre-measured even pauses to the JVM, effectively improving performance.Although the GC is constantly intact, its Achilles heel is the
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