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push multiple elements to array
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@FlorentArlandis array.concat does not work to add the 2nd array to the first. It will create a new one. I know it is similar. The spread operator is what I was looking for. Just look at the other answers and comments there for details.
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Case insensitive searching in Oracle
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hey does the ALTER SESSION only alter your local instance of the correction and does it mean like your current session i.e. if i close and reopen it would have reset. Is there a way that i can see what the current values are so t...
What is an idempotent operation?
... its discard method. The discard method removes an element from a set, and does nothing if the element does not exist. So:
my_set.discard(x)
has exactly the same effect as doing the same operation twice:
my_set.discard(x)
my_set.discard(x)
Idempotent operations are often used in the design of ...
How often to commit changes to source control? [closed]
... The probability of breaking the build with such an approach does not grow if you use a distributed version control system.
– skiphoppy
Apr 1 '09 at 2:24
24
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Hyphen, underscore, or camelCase as word delimiter in URIs?
... underscore also require the user to use the shift key, whereas hyphenated does not.
So if you should use hyphens in a crawlable web application, why would you bother doing something different in an intranet application? One less thing to remember.
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What's the difference between SCSS and Sass?
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Another gotcha: as of 2019-05-10, SASS still does not support multi-line expressions, so large lists/maps have to be either one-liners, defined using lots of function calls, or defined in SCSS files. It seems to be still a planned feature, but I'm not sure if there's a...
javac is not recognized as an internal or external command, operable program or batch file [closed]
....exe, javac.bat, etc. is present. When it finds javac, it runs it. When it does not, it prints 'javac' is not recognized as an internal or external command, operable program or batch file.
You must add the Java executables directory to PATH.
JDK vs. JRE
(If you already understand this, feel free ...
Is there any performance reason to declare method parameters final in Java?
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The final keyword does not appear in the class file for local variables and parameters, thus it cannot impact the runtime performance. It's only use is to clarify the coders intent that the variable not be changed (which many consider dubious...
StringLength vs MaxLength attributes ASP.NET MVC with Entity Framework EF Code First
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Also note that by default MVC 3 does not recognized MaxLengthAttribute, while EF does recognize StringLengthAttribute
– marcind
Apr 19 '11 at 18:09
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map function for objects (instead of arrays)
...otype-chain. In such cases Object.keys() won't work, because Object.keys() does not enumerate inherited properties. If you need to map inherited properties, you should use for (key in myObj) {...}.
Here is an example of an object which inherits the properties of another object and how Object.keys()...