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Can someone explain this 'double negative' trick? [duplicate]
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@Grinn : user113716 did not list all. He forgot -0 . I do not mean a unary minus with a zero, but the result of that which is a seperate value. You can create it, for instance, by assigning -0 to a variable.
– Marco de Wit
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Big-O summary for Java Collections Framework implementations? [closed]
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Collections Overview has a nice summary table.
Annotated Outline lists all of the implementations on one page.
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AngularJS ng-if with multiple conditions
... If I have 20 input fields and I have to enable submit button only if all fields are filled. In this case, I have to include so many conditions. This is little bit confusing. Is there any other feasible solution?
– Mr_Perfect
Dec 2 '16 at 5:14
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How do I compile a Visual Studio project from the command-line?
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MSBuild usually works, but I've run into difficulties before. You may have better luck with
devenv YourSolution.sln /Build
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Check whether a string matches a regex in JS
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Use regex.test() if all you want is a boolean result:
console.log(/^([a-z0-9]{5,})$/.test('abc1')); // false
console.log(/^([a-z0-9]{5,})$/.test('abc12')); // true
console.log(/^([a-z0-9]{5,})$/.test('abc123')); // true
...and ...
How to import local packages without gopath
... 1.11
dep or vendor if your go version is: go 1.6 >= x < go 1.11
Manually if your go version is: x < go 1.6
Edit 3: Go 1.11 has a feature vgo which will replace dep.
To use vgo, see Modules documentation. TLDR below:
export GO111MODULE=on
go mod init
go mod vendor # if you have vendor...
CSS Properties: Display vs. Visibility
... display property tells the browser how to draw and show an element, if at all - whether it should be displayed as an inline element (i.e. it flows with text and other inline elements) or a block-level element (i.e. it has height and width properties that you can set, it's floatable, etc), or an inl...
Undo git pull, how to bring repos to old state
...and then reset to it.
Warning
The commands listed in this section remove all uncommitted changes, potentially leading to a loss of work:
git reset --hard
Alternatively, reset to a particular point in time, such as:
git reset --hard master@{"10 minutes ago"}
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Cache an HTTP 'Get' service response in AngularJS?
...url, { cache: true}).success(...);
or, if you prefer the config type of call:
$http({ cache: true, url: url, method: 'GET'}).success(...);
Cache Object
You can also use a cache factory:
var cache = $cacheFactory('myCache');
$http.get(url, { cache: cache })
You can implement it yourself usi...
Quicksort vs heapsort
... The most direct competitor of
quicksort is heapsort. Heapsort is
typically somewhat slower than
quicksort, but the worst-case running
time is always Θ(nlogn). Quicksort is
usually faster, though there remains
the chance of worst case performance
except in the introsort variant, which...