Tag：Capitalization
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Time：2021-1-20
Oracle database optimization skills (1) 1. Join order in where clause In Oracle database, the execution order of where clause isBottom upAccording to this principle, the connection between tables must be written before other where conditions, and those conditions that can filter out the maximum number of records must be written before other where conditions […]
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Time：2021-1-19
fn main() { Println! (“{}”, 1); // default usage, print display Println! (“{: O}”, 9); // octal Println! (“{: X}”, 255); // hexadecimal lowercase Println! (“{: X}”, 255); // hexadecimal uppercase Println! (“{: P}”, & 0); // pointer Println! (“{: B}”, 15); // binary Println! (“{: e}”, 10000f32); // scientific count (lowercase) Println! (“{: e}”, […]
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Time：2021-1-19
Converting text between case and case can be cumbersome, fortunatelyLinuxSome suggestions are providedcommandThesecommandIt can make work very simple. Environmental Science Centos7 Using tr If you have a string that you want to make sure it’s all uppercase, simply replace it with the TR command: [[email protected] ~]# echo “Hello World” | tr [:lower:] [:upper:]HELLO WORLD Here’s […]
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Time：2021-1-14
Talking about the convenient string operation of laravel 7 Friends who have used laravel know that they know the built-in string processing function of laravel, illuminatesupportstr class. Laravel 7 now provides a more object-oriented, smoother string manipulation library based on these functions. You can use string:: of to create an illuminatesupportstringable object, and then process […]
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Time：2020-12-31
1. The hump naming method is recommended for naming golang. It must start with a single letter (Unicode letter) or an underline, and can be followed by any number of letters, numbers or underscores. 2. In golang, the access permission is determined by the case of the first letter. No matter the method name, […]
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Time：2020-5-7
Character functions, as the name implies, operate on strings. Let’s take a look at Oracle’s character functions in the following figure. 1、 Case control function lower、upper、initcap Select lower (‘Hello world ‘) to lowercase, upper (‘Hello world’) to uppercase, initcap (‘Hello world ‘) to uppercase from dual; 2、 Character control function Substr (a, b) starts […]
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Time：2020-3-3
In Bash, you usually use${parameter}Expression to getparameterThe value of the variable, which is a parameter expansion.Bash also provides other forms of parameter extension, which can do some processing for variable values and play the effect of string operation. For example: ${parameter^^pattern}holdparameterMatch in variable valuepatternThe lowercase letters of the pattern characters are converted to uppercase. ${parameter,,pattern}holdparameterMatch […]
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Time：2020-2-29
VIM case conversion Visual mode VW ා select a word Convert to lowercase Gu ා convert to uppercase Guw / guw convert a word
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Time：2020-1-11
Blog Garden beautify blog essay directory Be based onAloof and proud wolfstay2014-5-11Improvement based on directory code One.Js code var BlogDirectory = { /* Get the location of the element, the distance from the left border of the browser (left) and the distance from the top border of the browser (top) */ getElementPosition:function (ele) { var […]
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Time：2019-12-15
This article introduces some skills of vim: Direct command execution in insert mode Fast case conversion Direct command execution in insert mode To edit a file in VIM’s insert mode, you may need to execute a command temporarily to complete some operations, such as jumping to line 100 for editing. Common practice is to press […]
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Time：2019-12-12
Needs and ideas In a general small project or a small software, such as a client, data persistence may be required. However, it is not appropriate to use a general database (MySQL). SQLite3 is a better embedded method, but SQLite3 Library in go language is C language, CGO does not support cross platform compilation. It […]
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Time：2019-11-29
Copy codeThe code is as follows: /* –Set the initial of a string to uppercase in SQL Server:–Author: jinjazz / CSDN–SQL Server 2005 enable OLE Automationsp_configure ‘show advanced options’, 1; go RECONFIGURE; go sp_configure ‘Ole Automation Procedures’, 1; go RECONFIGURE; go */ use tempdb go if (object_id (‘fn_toTitleCase’ ) is not null ) drop function […]
