hbr essentials

, let's look at the use of closure code to be more conciseImport Cocoa // use closure var counts = [16229 - = counts.sort ({ in return i j})Swift's closure syntax:{(parameters), [return type] inCode}The closure is made more concise by type inference (inference):= [1622930 in i Make your code more concise with parameter placeholders:= [16229 Counts.sort ({$0 1 })It is not difficult to judge that the code above represents the first parameter, which is I, and that the first parameter

. Navigation tests. When you run the app, the navigation is intuitive, accurate, and the page is switched correctly, regardless of the contact. Picture Test. Picture, whether the button is self-adapting. Content testing. To make extra-long characters, check for null characters and check for typos Functional testing. Whether the feature is implemented. Ease of use testing. The development of the function, whether the user is easy to accept, whether it is in line with the publi

CSS3 has 3 types of animation-related properties: Transform, transition, animation.Different points:1. Trigger conditions are different. Transition is usually used in conjunction with events such as hover and is triggered by events. The animation is similar to the GIF animated diagram and plays immediately.2. Cycle. Animation can set the number of cycles.3. Accuracy. Animation can set the style and time of each frame. Tranistion can only be set to the tail. In animation, you can set style proper

-down hierarchical search;* * Common binary clues, this special structure of the tree, the IP address from the left to the right of the bit value determines the path from the root node-by-layer downward, and the path of the binary clues in the route table represents the various addresses;* * from the root node of the two forks the top-down depth is up to 32 layers, each layer corresponds to one of the IP addresses; the rule for an IP address to deposit two forks is simple: first detect the first

1. FormsProperties of the Tabledespan columns across rowsCross-row: RowSpan cross-column: colspan2. Relative path Absolute path: src= "http://www.a.com/b.jpg" or "d:/web/c.jpg"Relative path: src= ". /.. /c/d.jpg ""..“ Represents the previous layer of the current path, "." Represents the same level as the current path3. FormsType property: Text (single line of text) textarea (multiple lines) submit (Submit button) radio (radio)　　　　　　　　Male: Input type= "Radio" checked= "Checked" name= "Sex" value

contains some RPM package, about 3G, these do not have to re-download. /usr/bin/rsync-avrsync://mirrors.ustc.edu.cn/centos/6/os/x86_64//data/yum_data/centos/6/os/ x86_64//usr/bin/rsync-avrsync://mirrors.ustc.edu.cn/centos/6/extras/x86_64//data/yum_data/ centos/6/extras/x86_64//usr/bin/rsync-avrsync://mirrors.ustc.edu.cn/centos/6/updates/x86_64/ /data/yum_data/centos/6/updates/x86_64/#epel Source/usr/bin/rsync-av--exclude=debugrsync:// MIRRORS.USTC.EDU.CN/EPEL/6/X86_64/NBSP;/DATA/YUM_DATA/EPEL/6

Record some key points for future inquiries ...1, people with Linux know the man Manual, similar to the Help document, very useful. Some uses of the man manual are documented below. The argument behind the man manual can be a command, function, or file name.2. The man manual has several sections (section), which are distinguished by numbers:(1) User order;(2) system call;(3) C function library;(4) Equipment and special documents;(5) Document format and practice;(6) games;(7) Miscellaneous;(8) Sy

1. Here (this is AI tak CA)Here the cold start after checking the front panel upgrade is OK, the two treatment schemes. If the success of the OTA or USB, if the failure to ask if the need to upgrade the serial port, the reason is: if the check will determine whether the front panel can be forced into OTA or USB upgrade, can not, it means that loader or the app is damaged, this time you need to use the serial port to force the application or loader.2. (same continent CA) Loaderpt: A data structur

clarity, the formation of blend gray tone, which is the characteristics of the gray tone. The bright gray tone with calm feeling, contains the elegance and the quiet, shows another kind of beautiful realm. 10Figure 105. Simple mid-grey (LTG)Medium gray tone is a set of moderate brightness of the gray hue, hue ring all colors are transferred into the gray, is the purity of the lower, the sense of hue is faint. Medium gray tone with a few deep and dim, with a simple, subtle, stable characteristic

different error, print an error log.when you write data to the socket, if you returneintr (interrupted), can be rewritten immediately,If you returnEagain (blocked), write again after a while.if it is a different error, print an error log, and then disconnect.when reading data to the socket, if return eintr (interrupted), re-read,If you return Eagain (blocked), print an error log and read it again.If it is a different error, disconnect.Network Constants These constants can be adjusted according

), purchasing (recruiting), virtual team (convenient for some inconvenient people, convenient)5, the characteristics of the successful team;Answer, 6, clear objectives, clear structure, concise process, reward, strict discipline, work synergy6, five stages of team building, and a brief description;A: formation, oscillation, specification, play, end7, through the use of which methods and technology construction project team;A: 6, general management skills, training, team building activities, basi

= S5PV210_GPB (5), -. Set_level =Gpio_set_value, the. Fb_delay =0x2, - }, - }; - //Modify the content in this structure according to the specific peripherals: This depends on the user manual of the peripherals. + Static structSpi_board_info s5pv210_spi_devs[] __initdata = { - { +. Modalias ="Spidev",/*MMC SPI, mod aliases*/ A. Mode = Spi_mode_0,/*cpol=0, Cpha=0*/ at. max_speed_hz =10000000, - /*Connected to SPI-0 as 1st Slave*/ -. Bus_num =0,//hooking up on the SPI0 bus -. Chip_

;Vector2 POS;Vector3 result;void Start (){Recttransform = transform as recttransform;canvas = gameobject.find ("Canvas"). Getcomponent}void Update (){if (Recttransformutility.screenpointtolocalpointinrectangle (Canvas.transform as Recttransform, Input.mousePosition , Canvas.worldcamera, out POS)){Recttransform.anchoredposition = pos;Recttransform.parent = Canvas.transform;}}Five: Toggle Add monitoringPublic Gameobject Tog3;Tog3.getcomponent{This. OnClick (TOG3);});void OnClick (Gameobject tog){}

subsequent word is Capitalized.④ source file name: The source file name must be the same as the class Name. When saving the file, you should use the class name to save the filename (remember that Java is case-sensitive), and the suffix of the file name is. Java. (a compilation error is caused if the file name and the class name are not the same).⑤ Main method Entry: All Java programs are executed by the public static void main (String []args) method.Three. JAva identifierAll components of Java

reliable transmission service, this makes the router in the network can do relatively simple, and inexpensive;* * If the communication between processes in the host (that is, the end system) needs to be reliable, then the transport layer in the network host is responsible (including error handling, traffic control, etc.);(3) Comparison of virtual circuit service and datagram service:* * Virtual Circuit services:① idea: Reliable communication should be ensured by the network;Establishment of a ②

Proficiency in Office Office software is the basic skills of every professional staff, because in the daily work of the computer, we often have to deal with Word, Excel, ppt, so master some shortcut keys is very necessary, today's small series summed up the 58 Office shortcut Keys, It is recommended to collect a copy of the office staff.These are the 58 Office shortcuts that are shared today, and we hope to help.Super-functional 58 Office Shortcut key Rollup, office staff

platform is very convenient, specifically in:1. Template editing simple, it supports local file upload, URL acquisition, in the Web page can do most of the operation, there are multiple types of mail templates to choose from, the HTML file editor is very convenient to use, can customize the addition of forwarding, unsubscribe and other links.2. The specific delivery time can be set by the system, then automatically send, no manual waiting operation.3. Group operations, the mailing list can be g

static-libTest_static:${obj}@${cc} ${c_flags} ${obj_s}-o test_static-static-l ${lib_dir}-L Y_stdio#this is to do test from a shared-libTest_share:${obj}@${cc} ${c_flags} ${obj_s}-o test_share-l ${lib_dir}-L Y_stdio#this is to make a static-libLiby_stdio_static:@${cc} ${c_flags}-C Y_STDIO.C@ar-rcs liby_stdio.a y_stdio.o@mv LIBY_STDIO.A ${lib_dir}#this is to make a shared-libLiby_stdio_shared:@${cc} ${c_flags}-fpic-c y_stdio.c@${cc}-shared-fpic-o liby_stdio.so y_stdio.o@mv liby_stdio.so ${lib_dir

"provide only declaration, no implementation", are the constraints of a subclass, and are "interface inheritance".Pure virtual Functions in C + + are also a "run-time polymorphism". 3.3 Normal function: is statically compiled, no run-time polymorphism, only according to the pointer or reference to the "literal" class object, call their own normal function. The normal function is the "enforced implementation" provided by the parent class for the child class.Therefore, in an inheritance relations

you and how to maintain a long-term relationship Keep interesting, unpredictable behavior. Pay attention to every detail. Do some thoughtful things. Sentiment is not the same as investment. If you want to have a lot of harvest, you need to get used to giving. In the end you will find that the pay is worthwhile, because love, care, humor and fun are different from money. When you give others love, care, humor and fun, you do not reduce these yourself. Instead, you have more of these