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Why doesn't GCC optimize a*a*a*a*a*a to (a*a*a)*(a*a*a)?
I am doing some numerical optimization on a scientific application. One thing I noticed is that GCC will optimize the call pow(a,2) by compiling it into a*a , but the call pow(a,6) is not optimized and will actually call the library function pow , which greatly slows down the performance. (In ...
Can I use a function for a default value in MySql?
... This isn't quite the same as having a DEFAULT value. How would one change this answer to only set the key if the value was NULL?
– ToolmakerSteve
Apr 1 '15 at 17:38
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convert an enum to another type of enum
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Just cast one to int and then cast it to the other enum (considering that you want the mapping done based on value):
Gender2 gender2 = (Gender2)((int)gender1);
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Store password in TortoiseHg
...ason, plaintext password storage is often perfectly sufficient, as long as one is aware of the security implications.
– Søren Løvborg
May 27 '12 at 21:13
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Efficient SQL test query or validation query that will work across all (or most) databases
...n error if your driver is not JDBC4 compliant to let you
know. Default: none
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What is the purpose of the implicit grant authorization type in OAuth 2?
...login with his Facebook account on Kickstarter. In this case the client is one of the Kickstarter's servers, which handles the user logins. This server gets the access token and the refresh token from Facebook. Thus this type of client considered to be "secure", due to restricted access, the tokens ...
Converting a JS object to an array using jQuery
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for anyone for whom this is not obvious, the keys don't need to be sequential (i.e. in this example they are 1 and 2 - but they could just as well be a string key or non sequential number
– Simon_Weaver
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Using jQuery to test if an input has focus
...the CSS :hover pseudo-class to add a border when the mouse is over them. One of the <div> s contains a <form> which, using jQuery, will keep the border if an input within it has focus. This works perfectly except that IE6 does not support :hover on any elements other than <a&g...
Find index of last occurrence of a sub-string using T-SQL
...es", no matter how deeply nested in subfolders. This does search for only one character (the backslash), but you can build on this for longer search strings.
The only downside is, I don't know how well this will work on TEXT data types. I've been on SQL 2005 for a few years now, and am no longer ...
List all base classes in a hierarchy of given class?
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Caution, __bases__ only goes up one level. (As your recursive utility implies, but a cursory glance at the example might not pick up on that.)
– Bob Stein
Mar 18 '16 at 14:31
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