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How to generate random SHA1 hash to use as ID in node.js?
...to use it for the value of an id attribute, make sure the ID starts with a letter: [A-Za-z].
– GijsjanB
Jan 10 '19 at 11:43
...
Is git's semi-secret empty tree object reliable, and why is there not a symbolic name for it?
...c642cb6eb9a060e54bf8d69288fbee4904, the empty tree SHA1.
git log --pretty=raw
commit 9ed4ff9ac204f20f826ddacc3f85ef7186d6cc14
tree 4b825dc642cb6eb9a060e54bf8d69288fbee4904 <====
author VonC <vonc@laposte.net> 1381232247 +0200
committer VonC <vonc@laposte.net> 1381232247 +0200
...
Making custom right-click context menus for my web-app
...for right click context menu in javascript:
Right Click Context Menu
Used raw javasScript Code for context menu functionality. Can you please check this, hope this will help you.
Live Code:
(function() {
"use strict";
/*********************************************** Context Men...
How to design a product table for many kinds of product where each product has many parameters
...ited the last paragraph to make it more clear, but it's about passing your raw EAV data to a process in a language which can deal with data transformations, lookups in a tree structure or any basic map reduce operations really quickly and in a memory efficient way. The specifics here would depend o...
Is the Scala 2.8 collections library a case of “the longest suicide note in history”? [closed]
...per self-describing identifiers had been used instead of arbitrary capital letters. :-)
– Ti Strga
Aug 19 '13 at 21:31
14
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How to create a self-signed certificate with OpenSSL
...ot provide emailAddress.
[ subject ]
countryName = Country Name (2 letter code)
countryName_default = US
stateOrProvinceName = State or Province Name (full name)
stateOrProvinceName_default = NY
localityName = Locality Name (eg, city)
localityName_default = New Yo...
What is the difference between a 'closure' and a 'lambda'?
...lled with value, a "variable" as it were. It is done by prepending a Greek letter λ (lambda), then the symbolic name (e.g. x), then a dot . before the expression. This then converts the expression into a function expecting one parameter.For example: λx.x+2 takes the expression x+2 and tells that t...
Class does not implement its superclass's required members
...regard. But how many of us bothered to fulfill them, completely and to the letter? Probably none of us! And the compiler did not enforce them; it was all purely conventional.
For example, in my Objective-C view controller subclass with this designated initializer:
- (instancetype) initWithCollecti...
'printf' vs. 'cout' in C++
... not even common non-standard feature exists), and such extensions are one letter (so it's easy to conflict with an already-existing format).
Unlike printf, std::cout depends completely on operator overloading, so there is no issue with custom formats - all you do is define a subroutine taking std:...
Why does C++ not have reflection?
...object can be optimized away.
operator[] on a vector is only comparable to raw
array indexing in performance
because the entire operator can be
inlined and thus removed entirely
from the compiled code. C# and Java
make a lot of guarantees about the
output of the compiler. If I define
a class in C#, ...