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How to make input type= file Should accept only pdf and xls

... if you list all files on selection box. you can still uploading any file. – rüff0 Jan 5 '19 at 15:35 add a comment ...
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How to convert AAR to JAR

...ted folder content. After import right click on the newly created project, select Properties -> Android, and check Is Library. In your main project that you want to use the library for, also go to Properties -> Android and add the newly added myProjectLib to the list of dependencies. ...
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What are bitwise shift (bit-shift) operators and how do they work?

...rs can be applied to integer values (int, long, possibly short and byte or char). In some languages, applying the shift operators to any datatype smaller than int automatically resizes the operand to be an int. Note that <<< is not an operator, because it would be redundant. Also note that...
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xpath find if node exists

...ther conditions and have a multi-branch statement. Think of it more like a SELECT than an if-then-else, with xsl:otherwise as the default:. – davenpcj Dec 16 '11 at 16:06 ...
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mysqli or PDO - what are the pros and cons? [closed]

...ostname;dbname=school", $username, $password) $stmt = $dbh->query("SELECT * FROM students"); /* MAGIC HAPPENS HERE */ $stmt->setFetchMode(PDO::FETCH_INTO, new Student); foreach($stmt as $student) { echo $student->getFullName().'<br />'; } $db...
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How to remove the border highlight on an input text element

When an HTML element is 'focused' (currently selected/tabbed into), many browsers (at least Safari and Chrome) will put a blue border around it. ...
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Are database triggers evil? [closed]

...lumns wouldn't exist and you'd have to process a function on each row when selecting them. That's likely to kill DBMS performance, far better to create the auto-generated column at insert/update time since that's the only time it changes. Also, lack of triggers would prevent data rules from being e...
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Filter dict to contain only certain keys?

...e got a dict that has a whole bunch of entries. I'm only interested in a select few of them. Is there an easy way to prune all the other ones out? ...
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How to have an automatic timestamp in SQLite?

....200'); INSERT INTO my_table(name) VALUES('test3'); This is the result: SELECT * FROM my_table; share | improve this answer | follow | ...
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SourceKitService Terminated

...nd com.apple.CoreSimulator.CoreSimulatorService[3952]: The runtime for the selected device is not installed. What I did to correct this issue. If you are only having an issue within the context of a Swift project, try this alone first. If that doesn't work, then try all of the steps further belo...