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In MySQL what does “Overhead” mean, what is bad about it, and how to fix it?
...hard drive.
I quote:
Every database will, over time,
require some form of maintenance to
keep it at an optimal performance
level. Purging deleted rows,
resequencing, compressing, managing
index paths, defragmenting, etc. is
what is known as OPTIMIZATION in mysql
and other terms ...
How does the ARM architecture differ from x86? [closed]
... /* repeat while equal compare string bytewise */
while on ARM shortest form might look like (without error checking etc.)
top:
ldrb r2, [r0, #1]! /* load a byte from address in r0 into r2, increment r0 after */
ldrb r3, [r1, #1]! /* load a byte from address in r1 into r3, increment r1 after */
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What are the differences between utf8_general_ci and utf8_unicode_ci? [duplicate]
...eneral Unicode text. What it does is:
converts to Unicode normalization form D for canonical decomposition
removes any combining characters
converts to upper case
This does not work correctly on Unicode, because it does not understand Unicode casing. Unicode casing alone is much more compli...
What tools to automatically inline CSS style to create email HTML code? [closed]
... MailerMailer was the only one that worked for me while keeping formatting intact.
– Jeshurun
Aug 29 '14 at 12:36
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How to convert int to QString?
...tring a2), so using QTextStream() and operator << is convenient when formatting longer strings with mixed types.
Caution: You might be tempted to use the sprintf() facility to mimic C style printf() statements, but it is recommended to use QTextStream or arg() because they support Unicode str...
Most simple but complete CMake example
... no boxing takes place. Variables are global. Builtin functions offer some form of named arguments by the fact that they expect some ids like PUBLIC or DESTINATION in their argument list, to group the arguments. But that's not a language feature, those ids are also just strings, and parsed by the fu...
How to store values from foreach loop into an array?
... $username are null? We have a similar situation where records are coming form an API, and somehow we are ending up with some null records in the array.
– pixelwiz
Apr 16 '18 at 15:34
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jQuery 1.9 .live() is not a function
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Here is a list of valid event handlers: https://api.jquery.com/category/forms/
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How to get filename without extension from file path in Ruby
...turns the last component of the filename given in file_name, which must be formed using forward slashes (``/’’) regardless of the separator used on the local file system. If suffix is given and present at the end of file_name, it is removed.
File.basename("/home/gumby/work/ruby.rb") #=&...
How can I check if a checkbox is checked?
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If you are using this form for mobile app then you may use the required attribute html5.
you dont want to use any java script validation for this. It should work
<input id="remember" name="remember" type="checkbox" required="required" />
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