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Batch script loop
...or command will operate in a numerical fashion, rather than operating on a set of files
%x is the loops variable
(starting value, increment of value, end condition[inclusive] )
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What is null in Java?
..., for any E o, where o == null, o instanceof R is always false.
What set does 'null' belong to?
JLS 4.1 The Kinds of Types and Values
There is also a special null type, the type of the expression null, which has no name. Because the null type has no name, it is impossible to declare a va...
How do you import a large MS SQL .sql file?
... width]
[-p[1] print statistics[colon format]]
[-R use client regional setting]
[-b On error batch abort]
[-v var = "value"...] [-A dedicated admin connection]
[-X[1] disable commands, startup script, environment variables [and exit]]
[-x disable variable substitution]
[-? show syntax...
Difference between Pragma and Cache-Control headers?
...r readers. It can also have max-age which doesn't prevent caching. It just sets an expiration date for it...
– Honey
Oct 23 '18 at 17:47
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Is it bad practice to have a constructor function return a Promise?
... a constructor should only create and initialize a new instance. It should set up data structures and all instance-specific properties, but not execute any tasks. It should be a pure function without side effects if possible, with all the benefits that has.
What if I want to execute things from ...
A weighted version of random.choice
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@JnBrymn You need to check r <= 0. Consider an input set of 1 items, and a roll of 1.0. The assertion will fail then. I corrected that error in the answer.
– moooeeeep
Nov 11 '15 at 10:38
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How to use Global Variables in C#?
...blic static class MyStaticValues
{
public static bool MyStaticBool {get;set;}
}
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Easy idiomatic way to define Ordering for a simple case class
...into the Scala that can do magic like List((2,1),(1,2)).sorted
There is a set of predefined orderings, e.g. for String, tuples up to 9 arity and so on.
No such thing exists for case classes, since it is not easy thing to roll off, given that field names are not known a-priori (at least without mac...
Shell script “for” loop syntax
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A security risk, since eval will evaluate anything you set max to. Consider max="2}; echo ha; #", then replace echo ha with something more destructive.
– chepner
Sep 12 '13 at 19:45
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Why does casting int to invalid enum value NOT throw exception?
... @StriplingWarrior, for interest. The Java equivalent is EnumSet.of(Monday, Wednesday, Thursday). Inside the EnumSet is just a single long. So gives a nice API without much efficiency loss.
– Iain
May 14 '13 at 6:38
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