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Articles by Vrundesha Joshi
Page 6 of 22
How to use Bold & Non-Bold Text In A Single UILabel in iOS/iPhone?
To use a Bold and a regular/Non-Bold text in a single UILabel, we can either use a storyboard editor to achieve the same, or we can do it programmatically. Let’s see both of them.Method One − Editing with StoryboardSelect the label you want to edit, go to it’s attribute inspector.From the first option Text, select Attributes instead of plain.Write the following text in the label “Bold Regular”Double Click on Bold to select it, and then right click on it to see more options.Select font > Bold from that option. It should do the task.Method Two − Programmatically Achieving the result.Add the ...
Read MoreCan we use LIKE and OR together in MySql?
You can use LIKE with OR operator which works same as IN operator.Let us see the syntax for both the cases −Case 1 − Using Like with OR operator.select *from yourTableName where yourColumnName Like ‘Value1’ or yourColumnName Like ‘Value2’ or yourColumnName Like ‘Value3’ . . . NCase 2 − Using IN operator.select *from yourTableName where IN(value1, value2, value3, .....N);To understand both the syntaxes, let us create a table. The query to create a table is as follows −mysql> create table LikeDemo −> ( −> Id varchar(20) −> ); Query OK, 0 rows affected (0.58 sec)Now you can insert records in ...
Read Moreint(5) vs. int(10) in MySQL?
The value in the parentheses is used to display only the width and sets the zerofill. The width is 5 for int(5), whereas 10 for int(10). Let us see another example with a different width value set for int.Let us first create a table. Here, we have set the int to int(11) and int(13). The following is the query to create a table −mysql> create table intVsIntAnyThingDemo −> ( −> Number1 int(11) unsigned zerofill, −> Number int(13) unsigned zerofill −> ); Query OK, 0 rows affected (1.17 sec)Now you can insert record in the table with the help of insert ...
Read MoreHow to subtract 3 hours from a datetime in MySQL?
Subtract 3 hours from DateTime in MySQL, using any of the following ways. The first approach is as follows −Case 1 − Using DATE_ADD()select date_add(yourColumnName, interval -3 hours) from yourTableName;Case 2 − Using DATE_SUB()select date_sub(yourColumnName, interval 3 hours) from yourTableName;Firstly, use now() to get the current date-time −mysql> select now();The following is the output −+---------------------+ | now() | +---------------------+ | 2018-11-30 10:13:23 | +---------------------+ 1 row in set (0.00 sec)DATE_ADDThe query to subtract 3 hours from DateTime is as follows. With date_add, we have set a negative date −mysql> select date_add(now(), interval -3 ...
Read MoreMaintaining order in MySQL "IN" query?
You can maintain the order in MySQL IN query with the help of field command. The syntax is as follows −select *from yourTableName anyVariableName where anyVariableName.yourColumnName in(value1, value2, ......N) order by field(anyVariableName.yourColumnName, value1, value2, ......N);To implement the above syntax let us create a table −mysql> create table OrderInDemo −> ( −> Id int, −> Name varchar(100), −> Age int −> ); Query OK, 0 rows affected (1.24 sec)Now let us insert some records in the table. The query to insert records are as follows −mysql> insert into OrderInDemo values(90, ...
Read MoreHow to change Table Engine in MySQL?
You can change table engine with the help of alter command. The syntax is as follows −alter table yourTableName ENGINE = yourEngineName;To understand the above syntax let us create a table with engine MyISAM. Later you can change any other engine. The following is the query to create a table.mysql> create table ChangeEngineTableDemo −> ( −> MovieId int, −> MovieName varchar(100), −> IsPopular bool −> )ENGINE = 'MyISAM'; Query OK, 0 rows affected (0.37 sec)Look at the above query, the table engine is MyISAM, now you can change it to any other engine. Here, we will change ...
Read MoreAccessing The Unix/Linux password database (pwd)
The pwd module in standard library of Python provides access to the password database of user accounts in a Unix/Linux operating system. Entries in this Password database are atored as a tuple-like object. The structure of tuple is according to following passwd structure pwd.h file in CPython APIIndexAttributeMeaning0pw_nameLogin name1pw_passwdOptional encrypted password2pw_uidNumerical user ID3pw_gidNumerical group ID4pw_gecosUser name or comment field5pw_dirUser home directory6pw_shellUser command interpreterThe pwd module defines the following functions −>>> import pwd >>> dir(pwd) ['__doc__', '__loader__', '__name__', '__package__', '__spec__', 'getpwall', 'getpwnam', 'getpwuid', 'struct_passwd']getpwnam() − This function returns record in the password database corresponding to the specified user name>>> pwd.getpwnam('root') pwd.struct_passwd(pw_name ...
Read MoreHow to store custom objects in NSUserDefaults?
In this article we’ll learn how to store custom objects in our application, but before you learn how to store custom object let’s see what are custom object?A custom object is any class or structure or any other data that is not a native data type like Int, Double, String etc. Storing data in NSUserDefaults is a three step process.Creating the custom ObjectWe’ll create a custom class Person that will have an age variable, and name variable.class Person: NSObject, NSCoding { var name: String var age: Int init(name: String, age: Int) { self.name = ...
Read MoreGet a list of Foreign Key constraints in MySQL
Let’s say we have a database “business” with number of tables. If you want to show only foreign key constraints, then use the following query −mysql> select * −> from information_schema.referential_constraints −> where constraint_schema = 'business';The following is the output displaying only foreign key constraints −+--------------------+-------------------+--------------------------+---------------------------+--------------------------+------------------------+--------------+-------------+-------------+-------------------+-----------------------+ | CONSTRAINT_CATALOG | CONSTRAINT_SCHEMA | CONSTRAINT_NAME | UNIQUE_CONSTRAINT_CATALOG | UNIQUE_CONSTRAINT_SCHEMA | UNIQUE_CONSTRAINT_NAME | MATCH_OPTION | UPDATE_RULE | DELETE_RULE | TABLE_NAME | REFERENCED_TABLE_NAME | +--------------------+-------------------+--------------------------+---------------------------+--------------------------+------------------------+--------------+-------------+-------------+-------------------+-----------------------+ | def | business | ConstChild ...
Read MoreHow to insert date in single quotes with MySQL date formats?
To insert the date with date formats, use the str_to_date() function with date in single quotes. The following is the syntax −insert into yourTableName values(Value1, value2, ......ValueN, str_to_date(‘anyDate’, ’%Y-%m-%d’));Here are the Date Formats in MySQL −FormatDescription%aAbbreviated weekday name (Sun to Sat)%bAbbreviated month name (Jan to Dec)%cNumeric month name (0 to 12)%DDay of the month as a numeric value, followed by suffix (1st, 2nd, 3rd, ...)%dDay of the month as a numeric value (01 to 31)%eDay of the month as a numeric value (0 to 31)%fMicroseconds (000000 to 999999)%HHour (00 to 23)%hHour (00 to 12)%IHour (00 to 12)%iMinutes (00 to 59)%jDay ...
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