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Limit number of characters allowed in form input text field
...of characters that will be accepted as input. This can be greater that specified by SIZE , in which case the field
will scroll appropriately. The default is unlimited.
<input type="text" maxlength="2" id="sessionNo" name="sessionNum" onkeypress="return isNumberKey(event)" />
However, thi...
Short form for Java if statement
I know there is a way for writing a Java if statement in short form.
15 Answers
15
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How to convert all tables from MyISAM into InnoDB?
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If your dealing with multiple databases and don't want to change the database everytime, change CONCAT('ALTER TABLE ', table_name, ' ENGINE=InnoDB;') to CONCAT('ALTER TABLE ',@DATABASE_NAME,'.', table_name, ' ENGINE=InnoDB;')...
No @XmlRootElement generated by JAXB
...ires certain information in order to marshal/unmarshal a given object, specifically the XML element name and namespace. You can't just pass any old object to the Marshaller. @XmlRootElement provides this information.
The annotation is just a convenience, however - JAXB does not require it. The alte...
How to locate the vimrc file used by vim editor?
...y exist.
You can check the full path of your vimrc with
:echo $MYVIMRC
If the output is empty, then your vim doesn't use a user vimrc (just create it if you wish).
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Using JQuery to check if no radio button in a group has been checked
I'm sitting with a problem, I need to check with JQuery if no radio button within a radio button group has been checked, so that I can give the users an javascript error if they forgot to check a option.
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How can I decompress a gzip stream with zlib?
...er as 16+MAX_WBITS, like this:
inflateInit2(&stream, 16+MAX_WBITS);
If you don't do this, zlib will complain about a bad stream format. By default, zlib creates streams with a zlib header, and on inflate does not recognise the different gzip header unless you tell it so. Although this is docu...
Print PHP Call Stack
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If you want to generate a backtrace, you are looking for debug_backtrace and/or debug_print_backtrace.
The first one will, for instance, get you an array like this one (quoting the manual) :
array(2) {
[0]=>
array(4) {
...
jQuery: Select data attributes that aren't empty?
...18) (mar'19) (may'20)...
Answer that works with:
Empty strings:
If the attr must exist & could have any value (or none at all)
jQuery("[href]");
Missing attributes:
If attr could exist & if exist, must have some value
jQuery("[href!='']");
Or both:
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Making a Location object in Android with latitude and longitude values
... gps, will it give me the current location? In other words what is the significance of provider
– Utsav Gupta
Oct 10 '15 at 14:03
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