004-Process Control and type conversion, 004-process Conversion
Process Control
Sequential structure, selection structure, and cyclic structure
1. Ordered Structure
The program is executed sequentially by default.
2. Select a structure
If SELECT statement
First case
If (condition) // if the condition is true, execute the following statement.
{
// Statement
}
Case 2
If (condition) // if the condition is true
Essence of C/C ++ left
(3) Conversion of left values
1. Conversion from left to right
Let's take a look at an example:
Int I = 10;
The compiler opens a space in the memory with a sizeof (INT) byte. It initializes the space with an integer of 10 and names it as I. I belongs to the left value. When I is placed in the following expression:
I + 1;
Because the + binary operator only requires the right valu
PHP Class 5 automatic type conversion and process control, php conversion process
Learning Overview:
1. Learn about automatic type conversion
2. Understand basic process control statements
3. Example: compile a calendar table
Automatic type conversion1) convert integer to string
echo $num."abc";
2) convert string to integer
$ Str + 3;
3) convert to boolean typ
Php implements mutual conversion of hexadecimal values, and php conversion of hexadecimal values
To convert from decimal to other hexadecimal values, the number is used to continuously divide by the number of hexadecimal values to be converted and read the remainder. Connect them together.
Test:
var_dump(decto_bin(array(128,253),2));var_dump(decto_bin(array(128,253),8));var_dump(decto_bin(array(128,253),16
PHP implements binary conversion, PHP conversion
From decimal to other binary conversions, the remainder is read by dividing the number by the number of binary numbers to be converted. Connected together on it.
Test:
Var_dump (Decto_bin (Array (128,253), 2)), Var_dump (Decto_bin (Array (128,253), 8)), Var_dump (Decto_bin (Array (128,253), 16)); X-powered-by:php/5.2.0content-type:text/htmlarray (2) {[0]=>
The implicit keyword is used to declare an implicit user-defined type conversion operator.
If you can ensure that the conversion process does not cause data loss, you can use this keyword to perform implicit conversion between user-defined types and other types. Reference timestamp this The explicit keyword is used to declare the User-Defined type
first, the conversion of the basic type 1. numeric to stringA string that directly adds an empty number.var num=20;var str=20+ "";Console.log (typeof str);//stringUse the string () function to make the number more visible to the stringvar num=20;var str=string (num);Console.log (typeof str);//stringUse the ToString () method. ToString () has a parameter that specifies the cardinality of the Transformation. (decimal/binary/eight Binary/16-binary)var nu
Finding a good PDF converter is saving your time. I believe everyone has had this experience: It's hard to find some good ones. Information, but it is stuck based on the format problem. Because common office software, such as office, cannot open PDF files. At this time What we need is a good online conversion of PDF to jpg image converter. Because the content of PDF files that we often need to convert is not the same, different PDF file conte
Now I will give a general summary of my daily work. In the morning, I will mainly study the official documents and instances of ArcGIS API for flex 1.3, whether the version is 1.2 or 1.3, previously, I had a superficial understanding of ArcGIS flex APIs. I just learned a little from the official example, because I didn't see the document or have fewer practical opportunities, so I took a lot of detours. Shortcuts exist. Read the official documentation to learn more about using ArcGIS flex APIs.
PHP implementation of currency conversion method, PHP implementation of currency conversion
In this paper, the method of implementing currency conversion in PHP is described. Share to everyone for your reference.
The specific implementation code is as follows:Copy CodeThe code is as follows: /** File:CurrencyConverter.php* Author:simon Jarvis* copyright:2005 Sim
Slave from EDN: http://edndoc.esri.com/arcobjects/9.2/NET/c45379b5-fbf2-405c-9a36-ea6690f295b2.htm
Overview of data conversion and transfer Within the geodatabase and geodatabase user interface (UI) libraries, there are five main interfaces involved with transferring datasets from one workspace to another. See the following topics: IFeatureDataConverter and IFeatureDataConverter2
IGeoDBDataTransfer (also known as copy/paste)
IDataset (specifically,
JS hexadecimal conversion and its functions; JS hexadecimal conversion
Js hexadecimal conversion is divided into two hexadecimal, octal, 10-hexadecimal, and hexadecimal conversion. We can directly use the object. toString () to achieve this:
Run the following code:
// Convert the hexadecimal value to the hexadecimal va
Decimal conversion to binary, octal, hexadecimal
From decimal to other binary conversions, the remainder is read by dividing the number by the number of binary numbers to be converted. Connected together on it.
Copy CodeThe code is as follows:
/**
* decimal-to-binary, octal, hex-less digits 0 *
*
* @param array $datalist incoming data array (100,123,130)
* The binary @param int $bin conversion can be: 2,8
CSS3 2d Conversion2d Conversion Method:1, moving translate (x, y) can change the position of the element, X, y can be negative;2, scaling scale (x, y) can be horizontal and vertical scaling of elements, X, y values can be decimal, not negative;4, rotation rotate (deg) can rotate the element, positive value is clockwise, negative value is counterclockwise;5. Tilt skew (deg, deg) can tilt the element at a certain angleProperties of the 2d transformation
The most comprehensive Java byte operations, conversion and hexadecimal conversion tools for processing basic Java data, common tools for streaming media and underlying java development projects, and javabyte tools
Conversion and hexadecimal conversion tools used to process basic Java data
I. Implementation Functions
1
I have shared the problem of expression conversion in my previous article (Linq to Entity experience: expression conversion). I thought the problem was solved, but I found that the problem was not solved in actual application, it is not completely unsolved, but not practical. The problem is as follows:Let's take a look at the problem.Objective of expression Conversion
Learn the CSS3 font, 2D conversion, 3D conversion one, font @font-faceStoring the font file on the Web server, defined in the CSS3 @font-face rule, is automatically downloaded to the user's computer when needed.{font-family:myfonts;//defines the font nameSrc:url (myfonts.ttf), url (myfonts.eot), url (MYFONTS.OTF),//font file source optional. TTF,. EoT,. OTF, etc. three format files }PS: In order to be com
Data conversion conflicts and ProcessingData conversion conflict: In the data conversion process, it is difficult to implement strict equivalent conversion. You must determine the syntax and semantic conflicts in the two models. These conflicts may include:(1) Name Conflict: The identifier of the source data source may
1. BackgroundIn understanding these two conversion methods, it is necessary to first understand some of the basic knowledge related to this. We have three common ways to represent spatial coordinates: latitude and high, planar and high, and spatial cartesian.2. Latitude and longitude coordinate system (geodetic coordinate system)The first thing I want to emphasize here is that the latitude and longitude of astronomical coordinates is different from th
One, automatic type conversionIn Java programs, it is often necessary to convert data between different basic data types. For example:,the int variable score1 in the code can perform the assignment directly for the double type variable score2, and The result is: 82.0This conversion is called automatic type conversion . Of course, automatic type conversions are required to meet specific conditions : The targ
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