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Does Java have something like C#'s ref and out keywords?
...emember. If you wait for a single answer and down vote every other answer, then SO should ban all the answer other than that got a confirmation from the owner of the question.
– Levent Divilioglu
Sep 18 '17 at 13:58
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Can an angular directive pass arguments to functions in expressions specified in the directive's att
...ression in the context of
the parent scope. If no attr name is specified then the attribute name
is assumed to be the same as the local name. Given and widget definition of scope: {
localFn:'&myAttr' }, then isolate scope property localFn will point to
a function wrapper for the count =...
How do you check if a variable is an array in JavaScript? [duplicate]
... test: http://jsperf.com/instanceof-array-vs-array-isarray/35 So have some fun and check it out.
Note: @EscapeNetscape has created another test as jsperf.com is down. http://jsben.ch/#/QgYAV I wanted to make sure the original link stay for whenever jsperf comes back online.
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Number of lines in a file in Java
...s takes 0.35 seconds, versus 2.40 seconds when using readLines(). Just for fun, linux' wc -l command takes 0.15 seconds.
public static int countLinesOld(String filename) throws IOException {
InputStream is = new BufferedInputStream(new FileInputStream(filename));
try {
byte[] c = ne...
Difference between malloc and calloc?
...r code becomes "safer" as a result of zero-initing allocations by default, then your code is insufficiently safe whether you use malloc or calloc. Using malloc is a good indicator that the data needs initialisation - I only use calloc in cases where those 0 bytes are actually meaningful. Also note t...
How to convert a clojure keyword into a string?
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I cannot imagine a more complete answer, but just for fun I shall dare someone to come up with it.
– Hamish Grubijan
Sep 15 '10 at 15:55
2
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[A]System.Web.WebPages.Razor.Configuration.HostSection cannot be cast to… web.config issue
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If you get this with the Route Debugger then you need to update the web.config in the Views folder under the Area for the Route Debugger.
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How to change the name of a Django app?
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For Postgres, If you want to rename the sequence too, then use ALTER SEQUENCE <oldAppName>_<modelName>_<PK>_seq RENAME TO <newAppName>_<modelName>_<PK>_seq;. Although it is not necessary, the system itself doesn't care about the name. The colu...
App Inventor 2 项目合并工具 AIMerge · App Inventor 2 中文网
...re 1: CountDownScreen1’s Screen1 Designer View
Blocks Editor
Developer1 then creates the blocks needed for Screen1. These blocks included a block to open the SetTime screen when the “Set Time” button is clicked and a block to handle when the SetTime screen is closed. Views of the SetTime.Cli...
SET versus SELECT when assigning variables?
... can only assign a scalar value. If the query returns multiple values/rows then SET will raise an error. SELECT will assign one of the values to the variable and hide the fact that multiple values were returned (so you'd likely never know why something was going wrong elsewhere - have fun troublesho...