performance changes the society 5 to remain unchanged limit 8 Moore's law limitations 9 social changes and programming 101.2 future predictions 13 scientific future predictions 14it future predictions 14 ultimate future predictions 16 price-based predictions future 16 Performance-based predictions future 17 capacity-based predictions in the future 18, we will look at bandwidth in the future 19 Summary 20 Chapter 2 The Past, present, and future of programming languages in the world 23. history o
Why use gradle?
Gradle is a relatively advanced building system and a good building tool that allows you to customize building logic through plug-ins
The following are the main reasons why Android studio chooses gradle:
Use domain specific language to describe and process the building logic. (DSL)
Based on groovy. DSL can mix various declarative elements and use code to manipulate these
application development, replaces the model of how to work, and uses precise and standardized models to describe application functions (what). More Application Models of openexpressapp Development PlatformMany of them start with what. In fact, the idea of business engineering has not recently emerged. The omg mda is a model description method independent of technology, but the development of MDA is not very good because it focuses onFrom some class graph modelsCodeLow-level model.
dynamic languages (such as Ruby and groovy ). Furthermore, we can use DSL to implement Domain Models.
I have imagined such a software system: its core functions are completely exposed to the outside by a DSL, and all business operations are carried out through this DSL, business rules in this field can be configured through a rule engine, so this
This article mainly introduces the JavaScriptDSL fluent interface (called using a chain) instance. This article describes the DSL fluent interface, DSL expression generator, and other content. if you need it, you can take a closer look at DSL, one of the most interesting things found in JavaScript is chained call (Method Chaining ). Interestingly, Martin Flower p
In-depth discussion of the specific information of the broadband access technology ADSL technology, concerning the problems of the broadband access technology ADSL technology, from the following aspects: introduction of loading from DSL, HDSL or VDSL, the following example describes how to use the Broadband Access Technology ADSL.
DSL Digital user Line (Digital Subscriber Line) is a combination of transmiss
communication quality of leased line users; other users can flow to GE upstream DSLAM equipment.
2) For DSLAM with FE upstream, if the number of users is less than 200, or in remote areas, the uplink resources are limited, the original uplink mode can be retained; if the number of users exceeds 200, you can merge multiple DSLAM users into one DSLAM device based on the actual situation, and use GE uplink.
3) the original use of STM-1, E1 and FE cascade DSLAM, can be removed according to the spec
, especially the latter. They have different transmission features, market positioning, physical location, and problems to be solved, in the future, many technologies may coexist in actual access networks. This article will introduce some major Wired Broadband Access Technologies.
At present, the main wired broadband access technologies include: ordinary Modem, N-ISDN narrowband integrated business Digital Network), Cable Modem and hfc-fiber coaxial Cable), HDSL high-speed digital user loop) sym
telephone network. A device capable of completing modulation and demodulation functions is called a modem.8.2 Wired and DSL① The device that converts the wired signal and the bit data back and forth is called a cable demodulator.Wired or DSL (Digital subscriber loop) is the applicable networking technology in the ② family③DSL does not interfere with voice signal
ObjectiveRecently, the concept of Jenkins as code has been mentioned in many articles, and the eight principles of continuous delivery have all been put into version management, and we are recently ready to put some of our company's job configurations on Jenkins into git because https://github.com/ Jenkinsci/job-dsl-plugin's support is groovy. I didn't know groovy, so I looked for some online groovy scripts to change and implemented the template with
kinds of apk.
Tip: Gradle supports the use of camel-style abbreviations on the command line instead of task names, such as:
Gradle AR
Equal to
Gradle Assemblerelease
As long as there is no other task the abbreviation is also ' AR 'Check dependencies for tasks related to:
Check dependency Lint
Connectedcheck relies on connectedandroidtest and connecteduiautomatortest (not yet implemented)
Devicecheck relies on the tasks provided by Plug-ins that implem
In the previous article in this series, we talked about the various ways to create a task, and in this article we will learn how to read gradle.
Download the GitHub sample code for this article series in the following ways:
git clone https://github.com/davenkin/gradle-learning.git
Gradle is a declarative building tool. At execution time, Gradle does not sequentially execute the contents of the Build.gradle file, but is divided into two phases, the first phase being the configuration phase, and
Gradle is a declarative building tool. At execution time, Gradle does not sequentially execute the contents of the Build.gradle file, but is divided into two phases, the first phase being the configuration phase, and then the actual execution phase. InDuring the configuration phase, Gradle will read all the contents of all Build.gradle files to configure project and task, such as setting the property of project and task, handling dependencies between tasks, and so on.
Although many times we just
:DSL's use of Sparksql supports DSL (Domain specific Language) in addition to supporting HIVEQL and SQL-92 syntax. In a DSL, using the Scala notation ' + identifier to represent the columns in the underlying table, Spark's execution engine converts these implicitly into expressions. In addition, many DSL-related methods can be found in the API, such as where (),
LoIface Lo inet LoopbackThese two sentences. Set the fixed IP, which can be configured in the NetworkManager graphical interface.2, close NetworkManager, close command: Sudo/etc/init.d/network-manager stop reboot: chkconfig network-manager off restart network:/etc/init.d/ Networking restartModify the/etc/network/interfaces file,System configuration section: Local loopback network.Auto LoIface Lo inet LoopbackWired configuration section:Auto Eth0#iface eth0 inet DHCP # If you do not want to use
Deep Firewall logging
The DNS hacker or crackers may be attempting to perform zone transfer (TCP), spoof DNS (UDP), or hide other traffic. Therefore, firewalls often filter or record port 53.
Note that you will often see 53 ports as UDP source ports. Unstable firewalls typically allow this communication and assume that this is a reply to a DNS query. Hacker often use this method to penetrate a firewall.
67 and Bootp/dhcp on the BOOTP and DHCP UDP: Firewalls in
DSL (digital subscriber lines, Digital subscriber line) is a copper telephone line for transmission medium transmission technology combination, it includes HDSL, SDSL, VDSL, ADSL and RADSL, etc., generally referred to as xDSL. Their main difference is reflected in the signal transmission speed and distance, as well as the uplink and downlink rate of the different symmetry of the two aspects.
HDSL and SDSL support symmetric t1/e1 (1.544mbps/2.048mbps)
Windows7 's Wireless network Setup Tutorial: Imagine sitting on the couch in your living room surfing the web, chatting with friends online comfortably in bed at night, or sending documents from your computer to your Home Office printer in the kitchen.
Wireless networking is a great convenience for networking flexibility, and setting up a wireless network is easier than you think.
This article introduces you to the steps to set up and start using a wireless network.
Get the right equipment
Y
ports. Note that you will often see port 53 as the UDP source port. An unstable firewall typically allows this communication and assumes that this is a reply to a DNS query. Hacker often use this method to penetrate firewalls.
67 and Bootp/dhcp on BOOTP and DHCPUDP: The firewalls in DSL and Cable-modem often see a large amount of data sent to the broadcast address 255.255.255.255. These machines are requesting an address assignment to the DHCP server
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