spring recipes a problem solution approach third edition

... material contained herein Managing Director: Welmoed Spahr Lead Editor: Steve Anglin Technical Reviewer: Michael Thomas Editorial Board: Steve Anglin, Pramila Balan, Laura Berendson, Aaron Black, ... contains a helper function called maketrans() that creates a translation table that maps each character in the first parameter to the character at the same position in the second parameter This ... Trang 1Python Recipes HandbookA Problem-Solution Approach — Joey Bernard Trang 3Python Recipes Handbook: A Problem-Solution ApproachFredericton, New Brunswick, Canada ISBN-13 (pbk):

Ngày tải lên: 24/07/2017, 17:46

... parrot and costs $25.00 Polynesia says: *squawk* Polynesia curses like a sailor Tweety is a canary and costs $15.00 Tweety says: *chirp* Carla is a canary and costs $15.00 Carla says: *chirp* Carla ... that a class implements an interface, you add the implements keyword plus the name of the interface to the class declaration One advantage that interfaces have over abstract classes is that a ... declared asabstract • An abstract class cannot be instantiated; you must extend it in another class and thencreate instances of the derived class Put another way, only concrete classes can beinstantiated

Ngày tải lên: 06/08/2014, 08:22

... (returns a number or FALSE if an average cannot be calculated): # mixed array_average(array $array)function array_average($array){ $retval = FALSE; if(is_array($array) && count($array)) ... the callback takes one or more array variables as parameters, and theseparameters must be the same number of array variables as passed to array_map() When youpass an array variable to array_map(), ... this: array array_filter(array $array, string $funcname) This function filters an array represented by the variable $array using a callback functionwhose name is funcname The callback acts on an

Ngày tải lên: 06/08/2014, 08:22

... java.util.Date, isdefined in the ECMAScript Standard, third edition, also known as EMCA-262, which can befound at http://www.ecma-international.org/publications/standards/ECMA-262.htm Theclass ... incarnations—browser JavaScript, Flash ActionScript, Microsoft JScript, and so on—then you are probably aware that ECMA-262 dates are stored internally as millisecond timestamps That is, an ECMAScript ... Description Day %A Full weekday name %a Abbreviated weekday name %u Weekday number (1 = Monday, 7 = Saturday) %d Day of the month, with leading zero Trang 2Character Description%e Day of the month,

Ngày tải lên: 06/08/2014, 08:22

... as a common form of storing data, and database interactivity becoming easierand cheaper every year, it is rather commonplace to have to take data from an antiquatedsource (such as a point-of-sale ... bysaying that certain data fields in a database can handle only a certain size field If a string field,for instance, goes into a database field that cannot take the length of the string, an error ... is a universal way to export data, and most databasesystems have features that allow them to read such a file Luckily, reading and writing comma-separated data with PHP 5 is simple, quick, and

Ngày tải lên: 06/08/2014, 08:22

... character that has a special meaning other than its literal meaning The letter a is an example of an atom; the sym-bol ^ is an example of both an atom and a metacharacter (a metacharacter that I will ... Regular Expression Syntax An expression either can be a single atom or can be more than one atom joined together An atom is a single character or a metacharacter A metacharacter is a single character ... atoms are inside the character class A sample character class is [ab], which will match a or b You can use the - character inside a character class to define a range of characters For instance, [a-c]

Ngày tải lên: 06/08/2014, 08:22

... memory associated with a name and a data type, and variables contain data to be used in calculations, program flow, presentation, and so on PHP is a loosely typed language where variables can be ... list of other values All data types are allowed as values Object A class instance Resource A handle to an internal data structure This can be a database connection or a result set Variables of the ... 9:54 AM Page 392 5092_Ch10_FINAL 8/26/05 9:56 AM CHAPTER Page 393 10 ■■■ Working with Variables V ariables are an important part of any programming language, and that goes for PHP too Variables are

Ngày tải lên: 06/08/2014, 08:22

... nothing as the cookie is dead ?> How It Works As you can see, this class makes it easy to create, maintain, and output a cookie Having the functionality available to you from an easy-to-manage ... dynamically by allowing functions to be born based on a certain condition Let’s say you want to take in a value from the user, and based on that value you create afunction that performs a certain ... Sessions handle simple data types, and they handle them well Like any PHP variable, however, the data type of a current session is based upon what was last assigned to it and can be changed quite easily

Ngày tải lên: 06/08/2014, 08:22

... Handling Special Characters An added security feature, particularly when dealing with database submittal, is validating against special characters being inserted into your script Be it a database ... the elements are as simple as a tag name In manycases, documents require that the elements or tags have attributes that specify additional infor-mation for each tag An example is the table element ... of any characters that could be harmful tothe database such as apostrophes The end result is a string that is quite squeaky clean, andyou can feel safe performing functionality on it 13-10 Creating

Ngày tải lên: 06/08/2014, 08:22

... actual fieldsyou want to return from the query via their table’s alias (for example, a.review).15-10 Displaying Results in a Form Many great PHP-based database maintenance software packages are ... thiscase), and the function intval() can help you when dealing with numerical values by ensur-ing a valid numerical response Apart from that, you can treat a dynamic query just as youwould treat a ... XML and from XML to MySQL The current standard for portable data is Extensible Markup Language (XML) XML is com-pletely portable and can be read by almost every major software release available

Ngày tải lên: 06/08/2014, 08:22

... 'state' => 'CA'); How It Works The simplest way to create an array in PHP is to call array() without any arguments, whichcreates a new, empty array You can create an array that is already ... R AY A S A S T R I N G 126 Trang 14To output all the values of an associative array as a string, you can use the array_values()function to get an ordered array consisting of the associative array’s ... purposes, you may also want to use the print_r(), var_export(), and var_dump()functions to output an array as a tree These are all particularly useful with associative arrays andnested arrays, as they

Ngày tải lên: 12/08/2014, 16:20

... complex values in a querystring takes a little more effort than passing regular data-typed values To pass a value such as an array or an object, you must first serialize the value into a format that ... $newclass->getsomeval() "<br />"; $newarray = array (); $newarray = $_GET['passedarray']; $newarray = stripslashes ($newarray); $newarray = unserialize ($newarray); Trang 22How ... nothing as the cookie is dead ?> How It Works As you can see, this class makes it easy to create, maintain, and output a cookie Having the functionality available to you from an easy-to-manage

Ngày tải lên: 12/08/2014, 16:20

... single value into a WDDX packet wddx_serialize_vars() Serializes variables into a WDDX packet WDDX works as a packet format, and each document contains one packet One packetcan be a single variable ... favor of true database applications Many database solutions are available on the Internet, including Microsoft Access, SQL Server, Oracle, and a few others Out of the pack of available options, ... $wddx variable This variable will be an array with all the variables as associa-tive elements The script will produce the following output: The sale in January was 10 The sale in February was 12

Ngày tải lên: 12/08/2014, 16:20

... is a special kind of list and the most common data object for statistical analysis Like any list, a data frame can contain both numerical and character information Some character information can ... Text data is typically formatted in lines and paragraphs for human beings to read and understand Qualitative researchers treat textual material the same way quantitative researchers treat numbers ... Trang 32Data StructuresAs a refresher, the basic data structures in R are vectors, matrices, lists, and data frames Remember R does not recognize a scalar quantity, instead treating that quantity

Ngày tải lên: 13/03/2019, 10:44

... is a special kind of list and the most common data object for statistical analysis Like any list, a data frame can contain both numerical and character information Some character information can ... Text data is typically formatted in lines and paragraphs for human beings to read and understand Qualitative researchers treat textual material the same way quantitative researchers treat numbers ... Trang 32Data StructuresAs a refresher, the basic data structures in R are vectors, matrices, lists, and data frames Remember R does not recognize a scalar quantity, instead treating that quantity

Ngày tải lên: 19/04/2019, 14:01

... end-to-end solutions PySpark might read data from HDFS, NoSQL databases, or a relational database management system (RDBMS) After data analysis, we can also save the results into HDFS or databases ... ■ Note You can read more about apache kafka at the following sites: https://kafka.apache.org/documentation/ https://kafka.apache.org/quickstart Apache Spark Apache Spark is a general-purpose, ... world, day-to-day problems follow patterns In data analysis, some problems are common, such as manipulating data, handling missing values, transforming data, and summarizing data Writing MapReduce

Ngày tải lên: 25/12/2020, 14:17

... data Trang 16management, data analytics, data integrations, and basically anything data focused They sound like a perfect group to partner with as the guardians of the data Another branch that ... DBA, which is a soft skill that we are already possess Leadership Leadership is not about a position, because we are not all DBA managers or team leads We have databases that we manage and teams ... Columnar, InMemory, Warehouse, and Analytical databases are all part of the database administrator’s job The database platforms continue to grow and develop Even with many relatively new databases

Ngày tải lên: 25/12/2020, 14:18

... end-to-end solutions PySpark might read data from HDFS, NoSQL databases, or a relational database management system (RDBMS) After data analysis, we can also save the results into HDFS or databases ... ■ Note You can read more about apache kafka at the following sites: https://kafka.apache.org/documentation/ https://kafka.apache.org/quickstart Apache Spark Apache Spark is a general-purpose, ... world, day-to-day problems follow patterns In data analysis, some problems are common, such as manipulating data, handling missing values, transforming data, and summarizing data Writing MapReduce

Ngày tải lên: 30/12/2020, 15:34

... such as ARM/armeabi-v 7a) , can emulate an SD card, provides a skin with a certain screen resolution, and has various hardware properties. Enter a name, target device, target platform (you may have ... MathUtils.java: javac -source 1.5 -target 1.5 com/androidrecipes/lib/MathUtils.java javac -source 1.6 -target 1.6 com/androidrecipes/lib/MathUtils.java Each command line results in a harmless “bootclasspath” ... 1-4’s AVD pane now includes an entry for your new AVD. Figure 1-5 reveals that an AVD has a name, targets a specific Android platform, targets a specific CPU/ABI (Application Binary Interface,...

Ngày tải lên: 05/04/2014, 12:16

... given variable a data type and then assign a value to it (as in languages such as C++ and Java), PHP automatically assigns a data type to a variable when a value is allocated to it. This makes ... regular arrays, multidimensional arrays, and even the handy associative array. Unlike the string functions available to PHP, the array functions are actually rather well organized and follow fairly ... easy-to-use naming conventions that make it straightforward to work with them. Setting up and assigning both associative arrays and regular arrays in PHP is easy. PHP arrays start the index at...

Ngày tải lên: 27/10/2013, 07:15