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Git: “Corrupt loose object”
...Execute these commands from the parent directory above your repo (replace 'foo' with the name of your project folder):
Create a backup of the corrupt directory:
cp -R foo foo-backup
Make a new clone of the remote repository to a new directory:
git clone git@www.mydomain.de:foo foo-newclone
Delete ...
Remove NA values from a vector
... I remove NA values from a vector?
Here it is:
Assume you have a vector foo as follows:
foo = c(1:10, NA, 20:30)
running length(foo) gives 22.
nona_foo = foo[!is.na(foo)]
length(nona_foo) is 21, because the NA values have been removed.
Remember is.na(foo) returns a boolean matrix, so ind...
Is there a performance difference between i++ and ++i in C++?
...e of the operator++ functions. Here's a standard pair of these functions:
Foo& Foo::operator++() // called for ++i
{
this->data += 1;
return *this;
}
Foo Foo::operator++(int ignored_dummy_value) // called for i++
{
Foo tmp(*this); // variable "tmp" cannot be optimized away...
How to make clang compile to llvm IR
...
Given some C/C++ file foo.c:
> clang -S -emit-llvm foo.c
Produces foo.ll which is an LLVM IR file.
The -emit-llvm option can also be passed to the compiler front-end directly, and not the driver by means of -cc1:
> clang -cc1 foo.c -emi...
Mongoose and multiple database in single node.js project
...roject, one mongoose installation and one mongoose instance.
-app_root/
--foo_app/
---db_access.js
---foo_db_connect.js
---node_modules/
----mongoose/
--bar_app/
---db_access.js
---bar_db_connect.js
---node_modules/
----mongoose/
In foo_db_connect.js
var mongoose = require('mongoose');
mongoose....
“X does not name a type” error in C++
...efined is called an incomplete type.
Consider the simpler example:
struct foo; // foo is *declared* to be a struct, but that struct is not yet defined
struct bar
{
// this is okay, it's just a pointer;
// we can point to something without knowing how that something is defined
foo* fp; ...
How to check for a valid Base64 encoded string
... just trying to convert it and see if there is an error? I have code code like this:
19 Answers
...
Get elements by attribute when querySelectorAll is not available without using libraries?
...ns getElementsByTagName('*'), and returns only those elements with a "data-foo" attribute:
function getAllElementsWithAttribute(attribute)
{
var matchingElements = [];
var allElements = document.getElementsByTagName('*');
for (var i = 0, n = allElements.length; i < n; i++)
{
if (allE...
Reorder bars in geom_bar ggplot2
I am trying to make a bar-plot where the plot is ordered from the miRNA with the highest value to the miRNA with the lowest. Why does my code not work?
...
Can we omit parentheses when creating an object using the “new” operator?
...═══════════╝
From this table follows that:
new Foo() has higher precedence than new Foo
new Foo() has the same precedence as . operator
new Foo has one level lower precedence than the . operator
new Date().toString() works perfectly because it evaluates as (new Date())...