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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 ...
When is assembly faster than C?
...s that, on occasion, it can be employed to write code that will be more performant than writing that code in a higher-level language, C in particular. However, I've also heard it stated many times that although that's not entirely false, the cases where assembler can actually be used to generate ...
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...
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 */
...
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...
SPA best practices for authentication and session management
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This question has been addressed, in a slightly different form, at length, here:
RESTful Authentication
But this addresses it from the server-side. Let's look at this from the client-side. Before we do that, though, there's an important prelude:
Javascript Crypto is Hopeless
Ma...
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 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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