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Python programming uses the tkinter module to implement the complete code example of the calculator software, pythontkinter Python provides libraries for multiple graphic development interfaces. Tkinter is one of them. Tkinter module (Tk Interface) is the interface of Python's standard Tk GUI toolkit. Tk and Tkinter can be used on most Unix platforms, and can also be used in Windows and Macintosh systems. Later versions of Tk8.0 can implement the local window style and run well on most platforms

parentheses (")", called a tree, which can contain Subtrees. The EBNF definition of SGF is as follows (see html # ebnf-def "> http://www.red-bean.com/sgf/sgf4.html#ebnf-def ): View plaincopy to clipboardprint?Collection = GameTree {GameTree}GameTree = "(" Sequence {GameTree }")"Sequence = Node {Node}Node = ";" {Property}Property = PropIdent PropValue {PropValue}PropIdent = UcLetter {UcLetter}PropValue = "[" CValueType "]"CValueType = (ValueType | Compose)ValueType = (None | Number | Real | Doub

between the beginning of the string and the last character specified by word${var%word*}: Where word can be any character specified; function: From right to left, find the var variable stored in the string, the first occurrence of word, delete the last character of the string to the left to the first occurrence of all characters between word characters;${var%%word*}: Ditto, except delete all characters from the rightmost character of the string to the left to the last occurrence of word charact

prototype chain. This inheritance is called delegation based inheritance-based delegation, or more commonly, prototype inheritance. Similar to "A", "B", and "C", create an object class "a", "B", and "c" in ECMAScript. Correspondingly, the object "a" has a common part of the object "B" and "c. Meanwhile, objects "B" and "c" only contain their own additional attributes or methods. Var a = {x: 10, calculate: function (z) {return this. x + this. y + z }}; var B = {y: 20, _ proto __: a}; var c = {y:

the same methods or attributes in each object. In A system based on class [class-based], these reusable parts are called class inheritance-put the same part into class A, and then class B and class C inherit from class, you can declare that you have something unique.ECMAScript does not have the concept of a class. However, the concept of reusing [reuse] is no different (in some aspects, or even more flexible than class-) and can be implemented by prototype chain. This inheritance is called dele

methods or attributes in each object. In A system based on class [class-based], these reusable parts are called class inheritance-put the same part into class A, and then class B and class C inherit from class, you can declare that you have something unique. ECMAScript does not have the concept of a class. However, the concept of reusing [reuse] is no different (in some aspects, or even more flexible than class-) and can be implemented by prototype chain. This inheritance is called delegation b

Enter n inequalities to find the maximum number of inequalities at the same time, data range nAnalysis: This problem has to change the idea to do, the known data not more than 1000, so enumeration 0~1000 within the number, in order to calculate how many inequalities to meet, and then update the answer, that is, a double cycle, 1000*50However, this question does not say that must be an integer, such as x>2,xSo when we do, we multiply the data one time, which is [0,2000] to do, but with the bounda

Quiet startup. Exits with Non-zero return code if unsuccessful. -R [Session] reattach to a detached screen process. -R Reattach if possible, otherwise start a new session. -S shell shell to execute rather than $SHELL. -S Sockname Name this session Openstack Restart Command One of the most inconvenient things about screen is that some computers can't scroll through the CTRL + [|] , which is not a good way to observe Log, so it is recommended that the start command Copy another Terminal execut

This is a beautiful multi-level drop-down menu landscaping, can be a perfect substitute for "select" to achieve the effect of the Drop-down menu. and support multi-level menu, there is load waiting effect, there are hierarchical classification display. Copy Code code as follows: body {font-size:62.5%; margin:0; padding:0;} #menuLog {font-size:1.4em; margin:20px;} . hidden {position:absolute; top:0; left:-9999px; width:1px; height:1px; overflow:hidden;} .

Transferred from: http://search.xidorn.com/scholar/citations?user=Q0s9l6EAAAAJhl=en title1–61 cited by Year Fast and robust laser stripe extraction for 3D reconstruction in industrial environments R Usamentiaga, J Molleda, DF Garc Ía Machine Vision and Applications 23 (1), 179-196 38 2012 Real-time flatness inspection of rolled products based on optical laser triangulation and three-dimensional surface recons Tr

mFragment; // The current Fragment @ Override protected void onCreate (Bundle savedInstanceState) {super. onCreate (savedInstanceState); setContentView (R. layout.Activity_main); MFragmentManager = getFragmentManager (); if (savedInstanceState! = Null) {// restore Fragment mServiceFragment = (ServiceFragment) mFragmentManager. findFragmentByTag (FRAGMENT_TAG_SERVICE); MBbsFragment = (BbsFragment) mFragmentManager. findFragmentByTag (FRAGMENT_TAG_BBS); MNewsFragment = (NewsFragment) mFragmentMan

~/.tmuxinator/project_a.yml . To implement the configuration required for project A, you need to project_a.yml update the content to:Name:project_aroot: Once the above configuration has been added to the Yaml file of Project A, only the following command can be run to start the Tmux session.$ tmuxinator Start project_aOf course, if you want, you can also use the alias of the Tmuxinator command:$ MUX Start project_aIt's done. Now, whenever you want to get into Project A's coding, you just need

Notification released for Networkrequest [Id=22, Legacytype=-1, [capabilities:internetnot_restricted TRUSTEDRelease Network requests3. Through Mobilelog/aplog_2016_0902_134517/radio_log: Mediummobilelog/aplog_2016_0902_134517/radio_log:4924:09-02 13:45:27.939767 1570 1570 D Cat:stkappservice: processphonestatechanged FG State-disconnected,dialingmobilelog/aplog_2016_0902_134517/radio_log:4925:09-02 13:45:27.939788 1570 1570 D Cat:stkappservice: Proce

(just manage your own bash); Foreground: You can control the work of the environment called foreground (foreground) with the placing of commands; Background: You can run your own work, you cannot use [ctrl]+c to terminate him, you can use BG/FG to call the job; The "Running" program in the background cannot wait for Terminal/shell input Then let's actually manage the work! Management of Job ControlAs mentioned earlier,Bash can

)Bind Escape Copy-mode# Paste buffer (prefix ctrl+p)Bind ^p Pasteb# Select (v)Bind-t Vi-copy v begin-selection# Copy (y)Bind-t vi-copy y copy-selection# Zoom Pane #http://tmux.svn.sourceforge.net/viewvc/tmux/trunk/examples/tmux-zoom.shBind ^z Run "tmux-zoom"# app# htop (prefix!)Bind! SPLITW Htop# Man (prefix m)Bind m command-prompt "SPLITW ' exec man percent '"# perl func (prefix @)Bind @ command-prompt "SPLITW ' exec perldoc-t-f-percent '"# perl var (prefix *)Bind * command-prompt "SPLITW ' exe

-zoom.shBind ^z Run"Tmux-zoom"#app#htop (prefix!)bind! SPLITW htop#Man (prefix m)Bind M Command-prompt"SPLITW ' exec man percent '"#perl func (prefix @)Bind @ command-prompt"SPLITW ' exec perldoc-t-f percent '"#perl var (prefix *)Bind * Command-prompt"SPLITW ' exec perldoc-t-v -percent '"#perl doc (prefix%)Bind% Command-prompt"SPLITW ' exec perldoc-t percent '"#Ruby doc (prefix/)Bind/command-prompt"SPLITW ' exec ri percent '"#Reload config (prefix r)Bind r source ~/.tmux.conf \; Display"Configur

ASP. after uploading an image, add a watermark. for example, the URL. the text is white. however, when the background is white, the watermark cannot be seen at all. search for materials and find a method to draw text shadow. I found several, finally found a foreigner's article, and. net comes with the same statement in the documentation. instead, draw 2-5 gray texts with different alpha values as shadows .. then, draw the text of the normal color .... khan !!!!!!!!!!!!!!!!!! 111 there is no way,

Kill-Stop 1234 pause the process.If you want to restore it to the background, use kill-cont 1234 (many programs running on the foreground do not work)To restore the process to the foreground, run the jobs command on the terminal that was running the process to query the paused process.Then use FG [job number] to restore the process to the foreground.If jobs only queries one process, only FG is required.For

in the background) pause or run. It should be noted that when a job that is placed in the background wants to run, it must not be able to interact with the user. For example, vim cannot run (running) in the background! He won't run because you didn't input the data! In addition, you cannot use [ctrl] + c to terminate the work in the background 』! In short, the following restrictions must be noted for bash job control: The program triggered by these jobs must come from your shell subroutine (o

row has been created. SQL> INSERT INTO T_TREE VALUES (4, 1, 'fg '); One row has been created. SQL> INSERT INTO T_TREE VALUES (5, 2, 'hij '); One row has been created. SQL> INSERT INTO T_TREE VALUES (6, 4, 'klm '); One row has been created. SQL> INSERT INTO T_TREE VALUES (7, 6, 'nopq '); One row has been created. SQL> INSERT INTO T_TREE VALUES (8, 5, 'rstu '); One row has been created. SQL> COMMIT; Submitted. SQL> SELECT * FROM T_TREE; ID FATHER_ID NA