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Evaluate expression given as a string
...ss("5+5")
[1] "character"
> class(parse(text="5+5"))
[1] "expression"
Calling eval() invokes many behaviours, some are not immediately obvious:
> class(eval(parse(text="5+5")))
[1] "numeric"
> class(eval(parse(text="gray")))
[1] "function"
> class(eval(parse(text="blue")))
Error in ev...
Why Func instead of Predicate?
...expression you are passing to it has been defined separately to the method call, since then it will be typed as either Func<T, bool> or Predicate<T> rather than having the type inferred by the compiler.
– Adam Ralph
May 10 '16 at 19:10
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How does the Windows Command Interpreter (CMD.EXE) parse scripts?
...ds are on either side of a pipe
Phase 5.5) Execute Redirection:
Phase 6) CALL processing/Caret doubling: Only if the command token is CALL
Phase 7) Execute: The command is executed
Here are details for each phase:
Note that the phases described below are only a model of how the batch parser ...
RESTful Authentication
...knesses - including MiM and Replay - so is to be used only over HTTPS. Typically, a JWT is used as a token.
Query Authentication
Query Authentication consists in signing each RESTful request via some additional parameters on the URI. See this reference article.
It was defined as such in this art...
Android: Difference between Parcelable and Serializable?
... a class Serializable by implementing the interface, and Java will automatically serialize it in certain situations.
Parcelable is an Android specific interface where you implement the serialization yourself. It was created to be far more efficient that Serializable, and to get around some probl...
How to resize superview to fit all subviews with autolayout?
...on a UITableViewCell (to determine row height for example) then you should call it against your cell contentView and grab the height.
Further considerations exist if you have one or more UILabel's in your view that are multiline. For these it is imperitive that the preferredMaxLayoutWidth proper...
Bytecode features not available in the Java language
...r, here is a summary of my findings:
Execute code in a constructor before calling a super constructor or auxiliary constructor
In the Java programming language (JPL), a constructor's first statement must be an invocation of a super constructor or another constructor of the same class. This is not ...
How to call Stored Procedure in Entity Framework 6 (Code-First)?
...
You can call a stored procedure in your DbContext class as follows.
this.Database.SqlQuery<YourEntityType>("storedProcedureName",params);
But if your stored procedure returns multiple result sets as your sample code, then yo...
What are C++ functors and their uses?
...(42); // create an instance of the functor class
int i = add42(8); // and "call" it
assert(i == 50); // and it added 42 to its argument
std::vector<int> in; // assume this contains a bunch of values)
std::vector<int> out(in.size());
// Pass a functor to std::transform, which calls the f...
What are some examples of commonly used practices for naming git branches? [closed]
...wever, the op is looking for advice on the conventions on what to actually call the branches.
– wheeler
May 1 '17 at 20:13
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