useful

Whether you're a new JavaScript novice or a seasoned developer, the tools you use directly affect your productivity. The open source movement makes it less expensive to have a powerful tool, and you don't actually have to pay for anything. Here's a

Date/Time Related queries Gets the first day of the current monthRun this command to quickly return to the first day of the current month. You can replace "sysdate" with any date value to specify the date of the query.Select TRUNC (sysdate, '

#-*-Coding:utf-8-*-__author__ = ' Administrator '#python高级编程: A useful design pattern#设计械是可复用的, some of the most popular books in a program that provide language-related solutions to the problems of software design awareness:"""Gamma, Heim, Johson

I remember the first time I used Linux, I was also accustomed to the Windows graphical interface, I really hate the Linux terminal. At that time I felt the commands were hard to remember and could not be used correctly. Over time, I realized the

Currently, there are thousands of Python packages on the Web , but few people can know them all. There is a list of more than 47000 packages on PyPI alone . Now, more and more data scientists are starting to use python, and although they get a lot

Ctrl + Shift + T: Open type: Displays the Open Type dialog box to open the type in the editor. The Open Type Selection dialog box displays all the types that exist in the workspace, such as classes, interfaces, and so on.Ctrl + Shift + R: Open

Let me tell you some of my useful Photoshop tips! I know everyone likes to download materials, but good materials also need good techniques to use them well. Because of this we can reduce the energy spent on the operation itself, to use in how to

10 most useful shortcut key combinations in eclipse1. Ctrl+shift+r: Open ResourceThis is probably the most time-saving combination of all shortcut keys. This set of shortcuts lets you open any file in your workspace, and you only need to press the

Save the file and exitIt's a shame to say it, and I've learned this order recently.??And the following command is equivalent:: Wqis to save the current file and exit.(Translator Note: These two commands are actually not exactly equivalent when the

Useful commands: Open the Man command as a PDF file preview Man-t grep | Open-f-A Preview Locate the location of a file Locate Htop Hide and Show Desktop files Chflags hidden ~/desktop/*//Hide Desktop

The PHP library provides developers with a standard interface that helps developers take advantage of object-oriented programming in PHP. These libraries provide a standard API for specific types of built-in functionality, allowing classes to

To add a CSS class to the specified element: Changing the appearance and feel of elements by adding CSS classes is a very clean method, not adding inline styles. Using JQuery, it's easy to do: $ (' #myelement '). addclass (' MyClass '); To remove

Even if you're using PHP for years, you'll stumble across functions and functions that you never knew about. Some of them are very useful, but not fully utilized. Not everyone will read the manual and function references from beginning to end. 1,

In order to communicate with users in a timely manner, let users leave email in your website, and then when the site has any preferential activities, the latest updates, or some game activities in time to send a letter to tell your website users,

The popular JavaScript library has Jquery,mootools,prototype,dojo and Yui and so on, these JavaScript libraries feature rich, plus their numerous plugins, almost can achieve any function you needHowever, to implement some specific functions, you can

Super useful SQL statements (for SQLSERVER server) super useful SQL statements, after execution, the returned columns are: Table Name, column name, column type, column length, column description, whether the primary key, the statement is as follows:

The original, Google official blog. Http://android-developers.blogspot.sg/2015/04/new-android-code-samples.htmlHere are some examples of Android wearable, NFC, screenshots that have been submitted to the Google-like warehouse on GitHub.

20 useful PHP class libraries. The following are some very useful PHP class libraries. I believe they will certainly provide a better and faster way for your WEB development. The class libraries below the chart library can help you easily create

Several useful php functions for string capturing. I would like to share several useful PHP string truncation functions (gb2312 and UTF-8 supported ).? Mysubstr (, + (0; ++ (, 1) 0xa0. (, 2 ++. (, 1 ?? Utf8Substr (, (# ^ (? : Share several useful

This article mainly introduces some very useful functions and functions in Python. This article describes functions with any number of parameters and the use of Glob () find files, debug files, generate unique IDs, and other content. For more