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MySQL, Check if a column exists in a table with SQL
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Note that this answer only gets you the information about the existence of the column. If you want to conditionally-execute some DDL statements, you'll have to wrap the whole thing in a procedure which allows statements like IF, etc. See stackoverflow.com/questions/7384711/… f...
What is the difference between parseInt() and Number()?
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@bobo, sure. Out of curiosity checked with chrome - Number and parseInt still slower 99% than the rest. Plus to me they are less attractive visually too :-)
– Saulius
Aug 5 '14 at 12:19
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Pad a number with leading zeros in JavaScript [duplicate]
...fined elements. Though some Array instance methods skip array elements without values, .join() doesn't, or at least not completely; it treats them as if their value is the empty string. Thus you get a copy of the zero character (or whatever "z" is) between each of the array elements; that's why ther...
C++11 emplace_back on vector?
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It certainly isn't an answer. what's so interesting about it? any type with a ctor can be emplaced in this way. tuple has a ctor. the op's struct didn't. that's the answer.
– underscore_d
Jul 13 '16 at 21:53
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Is passing 'this' in a method call accepted practice in java
... way to omit it.
So use it.
As it's hard to convince it's acceptable without example (a negative answer to such a question is always easier to argument), I just opened one of the most common java.lang classes, the String one, and of course I found instances of this use, for example
1084 //...
SQL Joins Vs SQL Subqueries (Performance)?
... the single ID subquery (not correlated, meaning: not referencing multiple outer query columns) into a relatively fast semi-join. Also, as previously noted in another answer, the first, real join will return a row for EACH occurence of the matching ID in Dept - this makes no difference for a unique ...
Error - Unable to access the IIS metabase
...visual studio with administrator permissions. Look that:
http://bloggingabout.net/blogs/rick/archive/2012/10/04/unable-to-access-the-iis-metabase.aspx
To quote
The solution to this is simple: start your Visual Studio with "Run as
Administrator". You can do this by right clicking the shortcut...
FFMPEG (libx264) “height not divisible by 2”
...not a bug. It does not matter that you're not performing scaling since the output will inherit the frame size of the input.
– llogan
Dec 30 '13 at 23:12
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How to get the current time as datetime
...g = \(currentDate.toShortTimeString()))")
Which for 11:51 AM would write out:
(Current Hour = 11) (Current Minute = 51) (Current Short Time String = 11:51 AM)
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What is 'YTowOnt9'?
...I can't find that string anywhere in the (huge) codebase, and can't figure out where it came from. I decided to Google for that particular string, and the result surprised me. Over half a million - kind of random - hits. I haven't found any page describing the value itself. It has 0 hits on Stack...