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Git Alias - Multiple Commands and Parameters
...t works, but gives a spurious extra insertion of the argument ...
git chs demo -> git checkout demo && git status demo
But if you add && : to the end of your alias, then the spurious argument is consumed into a location tag.
So
[alias] chs = !git checkout $1 && git st...
Convert to binary and keep leading zeros in Python
...mat(bin(num)[2:])
Demo:
print binary(1)
Output:
'0b00000001'
EDIT:
based on @Martijn Pieters idea
def binary(num, length=8):
return format(num, '#0{}b'.format(length + 2))
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impr...
Pandas every nth row
...
I'd use iloc, which takes a row/column slice, both based on integer position and following normal python syntax.
df.iloc[::5, :]
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Simple way to transpose columns and rows in SQL?
...phasized that I want a method to transpose the results of a query on a database. A simple transpose type command that can be executed on the result set from a query without having to know anything about the query itself, or the columns, tables etc it is extracting info from. Something like: (TRANS...
How to make good reproducible pandas examples
... cs95
231k6060 gold badges390390 silver badges456456 bronze badges
answered Jul 19 '16 at 18:35
piRSquaredpiRSquared
220k3232 ...
minimum double value in C/C++
...
Meaningful for all specializations in which is_bounded != false.
Online demo
Lots of non portable C++ answers here !
There are many answers going for -std::numeric_limits<double>::max().
Fortunately, they will work well in most of the cases. Floating point encoding schemes decompose a num...
How to throw an exception in C?
...t) (void *) );
extern void * _ZTIl; // typeinfo of long
int bar1()
{
int64_t * p = (int64_t*)__cxa_allocate_exception(8);
*p = 1976;
__cxa_throw(p,&_ZTIl,0);
return 10;
}
// end bar.c
in a.cc,
#include <stdint.h>
#include <cstdio>
extern "C" int bar1();
void foo()
{
t...
user authentication libraries for node.js?
...ucceeds or fails.
For example, here is the two-step process to setup form-based (username and password) authentication:
passport.use(new LocalStrategy(
function(username, password, done) {
// Find the user from your DB (MongoDB, CouchDB, other...)
User.findOne({ username: username, passw...
Android emulator and virtualbox cannot run at same time
...run with CPU/ABI x86/x86_64 is a lot faster, but uses the same KVM (Kernel-based Virtual Machine) as VitualBox. Creating an emulator with another CPU, like arm64, will not conflict with VirtualBox, but emulator is a lot slower.
– jayeffkay
Jan 18 '17 at 13:24
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JavaScript % (modulo) gives a negative result for negative numbers
According to Google Calculator (-13) % 64 is 51 .
11 Answers
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