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Add up a column of numbers at the Unix shell
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edited Jan 17 '15 at 5:09
answered Aug 9 '13 at 6:27
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Get JavaScript object from array of objects by value of property [duplicate]
...lter()
const jsObjects = [
{a: 1, b: 2},
{a: 3, b: 4},
{a: 5, b: 6},
{a: 7, b: 8}
]
let result = jsObjects.filter(obj => {
return obj.b === 6
})
console.log(result)
Find the value of the first element/object in the array, otherwise undefined is returned.
var...
Are negative array indexes allowed in C?
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That is correct. From C99 §6.5.2.1/2:
The definition of the subscript
operator [] is that E1[E2] is
identical to (*((E1)+(E2))).
There's no magic. It's a 1-1 equivalence. As always when dereferencing a pointer (*), you need to be sure it's p...
Visual Studio Disabling Missing XML Comment Warning
I have a project with over 500 Missing XML Comment warnings. I know I can remove the XML Comment feature, or paste empty comment snippets everywhere, but I'd prefer a generic solution where I can make one change that disables all warnings of this type.
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What is a simple/minimal browserconfig.xml for a web site
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edited Mar 27 '17 at 15:58
Jeff Puckett
25k1212 gold badges8989 silver badges142142 bronze badges
an...
How Can I Set the Default Value of a Timestamp Column to the Current Timestamp with Laravel Migratio
...is works flawlessly on every database driver.
New shortcut
As of Laravel 5.1.25 (see PR 10962 and commit 15c487fe) you can use the new useCurrent() column modifier method to set the CURRENT_TIMESTAMP as a default value for a column:
$table->timestamp('created_at')->useCurrent();
Back to t...
Difference between jQuery parent(), parents() and closest() functions
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edited Dec 21 '18 at 10:05
Amit Shah
5,52855 gold badges2424 silver badges4545 bronze badges
answered F...
No identities are available for signing Xcode 5
...identities are available for signing" when try to validate my app in Xcode 5. I tried all: Recreate certificates and provisioning profiles, all methods which have been described on this site and another resources; I'm confused, because when I try to distribute my app as Ad-hoc, it successfully creat...
Determine if variable is defined in Python [duplicate]
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edited Sep 5 '19 at 12:44
phoenix
3,20611 gold badge2727 silver badges3131 bronze badges
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Importing data from a JSON file into R
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edited Jun 8 '16 at 7:53
answered Apr 11 '10 at 16:53
r...