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Why does the C preprocessor interpret the word “linux” as the constant “1”?
...unix and vax was a way to allow code to detect at compile time what system it was being compiled for. There was no official language standard back then (beyond the reference material at the back of the first edition of K&R), and C code of any complexity was typically a complex maze of #ifdefs to...
HashMap get/put complexity
...e are used to saying that HashMap get/put operations are O(1). However it depends on the hash implementation. The default object hash is actually the internal address in the JVM heap. Are we sure it is good enough to claim that the get/put are O(1) ?
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I need to store postal codes in a database. How big should the column be?
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Based on this link, from the page linked above, I'd go with 18 to accommodate countries like Chile: en.wikipedia.org/wiki/List_of_postal_codes
– mopo922
Jan 13 '16 at 4:04
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How to specify an element after which to wrap in css flexbox? [duplicate]
...? I'd like to respond to different page sizes and wrap a list differently without extra markup, so that rather than having (for example) orphaned menu items on the next line, I break in the middle of the menu.
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Why are Subjects not recommended in .NET Reactive Extensions?
I am currently getting to grips with the Reactive Extensions framework for .NET and I am working my way through the various introduction resources I've found (mainly http://www.introtorx.com )
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What is a Java ClassLoader?
In a few simple sentences, what is a Java ClassLoader, when is it used and why?
7 Answers
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Declaring an unsigned int in Java
...f you need to store large values.
You can also use a signed integer as if it were unsigned. The benefit of two's complement representation is that most operations (such as addition, subtraction, multiplication, and left shift) are identical on a binary level for signed and unsigned integers. A few ...
iPhone viewWillAppear not firing
I've read numerous posts about people having problems with viewWillAppear when you do not create your view hierarchy just right. My problem is I can't figure out what that means.
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Play a Sound with Python [duplicate]
...t and requiring the least dependencies. pygame is certainly an option, but it seems overkill for just sound.
10 Answers
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Escaping single quote in PHP when inserting into MySQL [duplicate]
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You should be escaping each of these strings (in both snippets) with mysql_real_escape_string().
http://us3.php.net/mysql-real-escape-string
The reason your two queries are behaving differently is likely because you have magic_quotes_gpc turned on (which you should know is a bad idea). ...