a dynamic libraryCreate the file hello. C with the following content:# Include
Void Hello (void){Printf ("Hello World/N ");}
Use the command gcc-shared hello. C-o libhello. So to compile it into a dynamic library. We can see that the current directory has an additional file libhello. So.[Leo @ Leo test] $ file libhello. SoLibhello. So: Elf 32-bit LSB shared object, Intel 80386, Version 1 (sysv), not stripp
.
Note : Before I start, I strongly recommend that you try this tutorial in a virtual machine, because Python is the core component of many Linux distributions, and any surprises can damage your system.
The following steps are based on a red Hat version such as CentOS (6 and 7), which can be skipped based on Debian versions such as Ubuntumint and Resbian, Pythonn 3 should be installed by default. If it is not installed, use Apt-get instead of Yum to install the appropriate package below.
backward compatible with Python 2.
Note:: Before you start, I strongly recommend that you try this tutorial on a virtual machine, because Python is the core component of many Linux distributions and may damage your system in any way.
The following steps are Red Hat-based versions such as CentOS (6 and 7). Debian-based versions such as tumint and Resbian can skip this step. Pythonn 3 should have been installed by default. If not, use apt-get instead of yum to install the corresponding package.
[
command has not added the system environment variables. you need to add the following content ~ /. Zshrc, and then execute source ~ /. Zshrc.
export PATH=$HOME/.pyenv/bin:$PATHeval "$(pyenv init -)"eval "$(pyenv virtualenv-init -)"
After completing the preceding steps, pyenv is installed.
$ pyenv -vpyenv 1.0.8
If you are not sure whether the pyenv environment is correctly installed, you can use the pyenv doctor command to check the environment.
$ pyenv doctorCloning /Users/
-)"
After completing the preceding steps, pyenv is installed.
$ pyenv -vpyenv 1.0.8
If you are not sure whether the pyenv environment is correctly installed, you can use the pyenv doctor command to check the environment.
$ pyenv doctorCloning /Users/Leo/.pyenv/plugins/pyenv-doctor/bin/.....Installing python-pyenv-doctor...BUILD FAILED (OS X 10.12.3 using python-build 20160602)Last 10 log lines:checking for memory.h... yeschecking for strings.h... yes
not been added to the system's environment variables, you need to add the following to ~/.ZSHRC, and then execute the source ~/.ZSHRC.
Export path= $HOME/.pyenv/bin: $PATHeval "$ (pyenv init-)" eval "$ (pyenv virtualenv-init-)"
After completing the above operation, the PYENV installation is complete.
$ pyenv-vpyenv 1.0.8
If you are unsure whether the PYENV environment is installed properly, you can detect the environment through the Pyenv Doctor command.
$ pyenv doctorcloning/users/
Essay classification-Php+mysql Encapsulation and Inheritance (PHP learning) Summary: What is encapsulation? A: The package does not know the internal structure, the external only shows the function of this behavior. For example: Radio, you do not know the structure of the radio, but you know the radio can be used to listen to the radio. In PHP, encapsulation is, not externally disclosed, properties and methods, these properties and methods, which are not directly accessible from outside the clas
Python is the core component of many Linux distributions, and any accident can damage your system.
The following steps are based on Red Hat versions such as CentOS (6 and 7), Debian-based versions such as Ubuntumint and Resbian can skip this step, Pythonn 3 should already be installed by default. If not, install the appropriate package using Apt-get instead of yum.
[Leo@linux-vps] Yum Groupinstall ' development Tools ' [
, lists, classes, functions, and modules. HTML/CSS (basic ).
To learn this tutorial, you do not have to be a python advanced developer.Install Python 3 on Linux
Python is installed by default on most Linux distributions. The following command shows the installed version.
[root@linux-vps ~]# python -VPython 2.7.5
We will use version 3.x to build our app. According to Python.org, this version is only improved and is not backward compatible with Python 2.
Note:: Before you start, I strongly recomme
, lists, classes, functions, and modules. HTML/CSS (basic ).
To learn this tutorial, you do not have to be a python advanced developer.Install Python 3 on Linux
Python is installed by default on most Linux distributions. The following command shows the installed version.
[root@linux-vps ~]# python -VPython 2.7.5
We will use version 3.x to build our app. According to Python.org, this version is only improved and is not backward compatible with Python 2.
Note:: Before you start, I strongly recomme
' 2, $d ' datafileDelete the second line to the last row2 , display a row sed-n ' 1p ' datafileShow First row sed-n ' $p ' datafileShow last linesed-n ' 1,4p ' datafile Show first to fourth lines3 , fuzzy querysed-n '/hello/p ' datafile query includes All rows where the keyword Hellosed-n '/\$/p ' datafile query includes all lines where the keyword ¥, using backslashes \ masked metacharacters4 , append rowssed ' 1,3a leozhong ' file Add the character "Leozhong" after the first line to the t
Copyright:Original works can be reproduced. During reprinting, you must mark the original publication, author information, and this statement in hyperlink form. Otherwise, legal liability will be held. Address:Http://blog.csdn.net/jobchanceleo/archive/2007/07/03/1677724.aspx
(Originally published in programmer magazine 6th)
Next to 《Job hopping-I was found by the donkey when I was looking for a horse (1)"
Li o left by the "donkey" salary increase
Le
Json,javascript Object NOTATION,JS is the most common form of structured data transmission at present.JSON is not a programming language, but rather a data structure, like MP4, AVI, is just a format. (data structure can contain a lot of types)Types of JSON values
Simple values
Object
Array
Simple values: String, Number, Boolean, and null, note that undefined is not included.Note: Strings in JSON must be in double quotation marks.Objects: Objects are unordered key-value pair
Server release 6.5 (Santiago)
Database Version
Oracle Database 11g Enterprise Edition Release 11.2.0.4.0-64bit Production
Database instance name
Shdb
Wrap path
The Oracle oracle_home/bin directory contains the wrap command.
/Opt/oracle/product/11.2.0/db_1/bin/wrap
Lab started
1. Create an SQL file in the oracle user's home directory.
[Oracle @ zxt28 ~] $ Vim leonarding. SQL
Create or replace procedure leo (I in number)
As
Begin
Dbms_output.put_line (
Test
1. Create a user leonarding and grant DBA authority
Sys@leo> create user leonarding identified by leonarding default tablespace users;
Sys@leo> Grant DBA to leonarding;
2. Create a T-table, as long as the structure of information
Sys@leo> Conn Leonarding/leonarding
Leonarding@leo> CREATE TABLE T as select *
memory is limited and integer values are not infinite. For example, print (type 2**100), the output is int.float:Decimals, for example 3.23. Science counts, 5.2E-4, equivalent to 5.2*10**-4.Boolean value:True or False (Ture/false), 1 or 0 (only 1 and 0 represent true and false).five or three-dollar operationresult = value 1 if condition else value 2. That is, when the IF condition is true, result is a value of 1, otherwise the value is 2.eg.A,b,c = 1,3,5result = A If a>b else CPrint (Result)vi.
{ /* styles for .main here */}
Finally, the demo results are as follows:
Result
Pellentesque habitant morbi tristique senectus et netus et malesuada fames AC turpis egestas. vestibulum tortor quam, feugiat Vitae, ultricies eget, Tempor sit Amet, ante. donec EU Libero sit Amet quam egestas semper. aenean ultricies mi Vitae est. mauris placerat eleifend Leo.
Pellentesque habitant morbi tristique senectus et netus et malesuada fames AC turpis egestas.
Today, let's take a look at another important class in the SIM card startup process, Ril.java
First, enter the Ril.java file
/**
* RIL implementation of the Commandsinterface.
*
* {@hide} */
/Leo, you need to be aware of this place, inherit from Basecommands, implement Commandsinterface interface public
final class RIL Extends Basecommands implements Commandsinterface {
...
}Note that this class is inherited from Basecommands and implements th
parameter list, and if more than one default parameter is placed at the end of the formal parameter list
Specify parameter
specifies that the argument is to be assigned to the corresponding parameter when the function is called to pass in the argument, which is called the specified parameters
eg. func (args1 = ' Kaye ', ARGS2 = +)
incoming specified parameter Number, the incoming order of the arguments does not have to follow the order of the parameters whe
. They adhere to the latest design concepts and are SEO friendly. If you like them, add them to favorites!
Popshop
Maxshop
Leo
Shoppik
BuyShop
Responsive supermarket
Leo Tracy
Pmart
Leo Flower
Leo Gifts
PowerTool
Parfijure
Leo Bike Prestashop Theme
Eggthemes
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