• Detailed analysis of block variable capture principle in IOS


    Block overview Block is a feature of C language level and runtime. Block encapsulates a piece of code logic, which is also enclosed by {}. It is similar to function / function pointer in standard C language. In addition, block C can reference variables in the definition environment. This is very similar to the concept […]

  • JavaScript variable, data type, basic instance details [variable, string, array, object, etc.]


    This article describes the JavaScript variables, data type basis. For your reference, the details are as follows: In this note, I record the basic knowledge of variables and data types. Because they are related, they are recorded together How to declare variables Variable declaration uses the VaR keyword. Here are some examples of variable declaration: […]

  • Examples of adding, deleting, modifying and querying PHP variables and strings


    This paper describes the PHP variable and string add, delete, modify and query operations. For your reference, the details are as follows: Use of variables <?php //Tell the browser what type of document to parse with what encoding method, to prevent Chinese garbled header(“Content-type: text/html; charset=utf-8”); //Examples of integers //Declaration integers $var=123; //Output one or […]

  • Processing method of Oracle date type field


    (1) In the English version of Oracle, the default date format is’ dd-mon-yy ‘, for example,’ 01-jan-98 ‘ In the Chinese version, the default date format of Oracle is’ Day Month Year ‘, such as’ 21-august-2003′ or ’21-august-03′ (2) Convert string to date Using Oracle inner function to_ date() To_ The parameter of the date() […]

  • In depth analysis of ruby variables


    A variable is a storage location that holds any data that can be used by any program. Ruby supports five types of variables. General lowercase letters, the beginning of the underline: variable. $starts with: global variable. @Beginning: instance variable. @@Start: class variables are shared in the entire inheritance chain Start with a capital letter: constant. […]

  • Usage of declare variable in sqlserver


    Declare usage in SQL I usually write SQL queries and stored procedures by feeling. I haven’t explored the specific syntax of SQL. I always imitate SQL according to C ා. A problem encountered in the project a few days ago has aroused my interest in the scope of declare defined variables. We all know the […]

  • Detailed explanation of three methods of JavaScript copying variables


    This article mainly introduces three methods of JavaScript copying variables. The example code is introduced in detail, which has certain reference learning value for everyone’s study or work. Friends in need can refer to it When a variable is directly assigned to another variable, the system does not create a new variable, but assigns the […]

  • Explain advanced usage examples of shell variables


    Variable deletion and replacement Case: match from scratch, delete the data that matches the shortest time (ා) variable_1=”I love you, Do you love me” echo $variable_1 variable_2=${variable_1#*ov} echo $variable_2 Case: match from scratch, delete the shortest composite data (ාාාාාාා) varible_3=${variable_1##*ov} echo $varible_3 Case: replace string, only replace (/) that matches successfully for the first time […]

  • On the meaning of shell variables $ා, [email protected], $0, $1, $2 in Linux


    Excerpt from: ABS_ GUIDE Download address: http://www.tldp.org/LDP/abs/abs-guide.pdf The meaning of shell variables $#, [email protected], $0, $1, $2 in Linux Variable description: $$ PID (ProcessId) of shell itself $! PID of background process that shell runs last $? The end code of the last run command (return value) $- List of flags set with set command […]

  • Printing training variable examples from the trained tensorflow model


    Printing training variables from a model saved after tensorflow training: Usingtf.train.NewCheckpointReader() import tensorflow as tf reader = tf.train.NewCheckpointReader(‘path/alexnet/model-330000’) dic = reader.get_variable_to_shape_map() print dic Print variables w = reader.get_tensor(“fc1/W”) print type(w) print w.shape print w[0] The above example of printing training variables from the trained tensorflow model is all the content shared by Xiaobian. I hope […]

  • Example code of CSS variable implementing dark mode


    Recently, wechat was forced by apple to developDark mode, more and more websites and applications begin to support the dark mode. Many people also like to choose the dark mode for websites. Maybe they prefer this appearance, or they want to keep their eyes from fatigue. This article will show you how to implement an […]

  • Ruby variables


    There are three kinds of variables in ruby, one is constant and two kinds of pseudo variables in the strict sense. There are no types in variables and constants. Although there are some disadvantages in untyped variables, they have more advantages and conform to the philosophy of quick and easy in ruby In most languages, […]