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MySQL ON DUPLICATE KEY UPDATE for multiple rows insert in single query
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What if you want to update few columns? Replace will update all.
– imVJ
Sep 9 '16 at 10:27
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How can I remove all my changes in my SVN working directory?
... not do that unless you are really sure that the nuke-from-space option is what you want!! This has the advantage of also nuking all build cruft, temporary files, and things that SVN ignores.
The more correct solution is to use the revert command:
svn revert -R .
The -R causes subversion to rec...
Java inner class and static nested class
What is the main difference between an inner class and a static nested class in Java? Does design / implementation play a role in choosing one of these?
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How do you check if a variable is an array in JavaScript? [duplicate]
I would like to check whether a variable is either an array or a single value in JavaScript.
23 Answers
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How to concatenate two IEnumerable into a new IEnumerable?
...ames of actions you want to perform are likely close if not exactly called what you are after. Always browse IntelliSense, you learn a lot.
– Adam Houldsworth
Jan 31 '14 at 11:02
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Why are flag enums usually defined with hexadecimal values
... is that hexadecimal reminds you: "Okay, we're not dealing with numbers in the arbitrary human-invented world of base ten anymore. We're dealing with bits - the machine's world - and we're gonna play by its rules." Hexadecimal is rarely used unless you're dealing with relatively low-level topics w...
How to suppress specific MSBuild warning
... here and you want to suppress compiler errors (e.g. "CS2008"), you can do what OP did: /p:nowarn=2008 (strip the "CS" off the number)
– Michael Haren
Jun 13 '13 at 18:18
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Replace None with NaN in pandas dataframe
...de might answer the question, can you consider adding some explanation for what the problem was you solved, and how you solved it? This will help future readers to understand your answer better and learn from it.
– Plutian
Feb 7 at 10:16
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Is it bad practice to have a constructor function return a Promise?
...tion without side effects if possible, with all the benefits that has.
What if I want to execute things from my constructor?
That should go in a method of your class. You want to mutate global state? Then call that procedure explicitly, not as a side effect of generating an object. This call c...
Convert a float64 to an int in Go
... if your system internally represent 2.0 as 1.9999999999, you will not get what you expect. The various printf conversions deal with this and properly round the number when converting. So to get a more accurate value, the conversion is even more complicated than you might first expect:
package ma...