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Load local JSON file into variable
...quotes (" not ') unless the value is numeric, boolean, null, or composite (array or object). JSON cannot contain functions or undefined values. Below is your object as valid JSON.
{
"id": "whatever",
"name": "start",
"children": [
{
"id": "0.9685",
"name": " contents:queue"
...
delete a.x vs a.x = undefined
...tored, or locations where the child keys are stored or locations where the array values are stored.
When you delete any key from an object using delete, actually it deletes link between that key and its parent object and the memory locations of key and its value are freed up to store another inform...
Generate C# class from XML
...t to d:\temp may be useful.
If you generate classes for multi-dimensional array, there is a bug in XSD.exe generator, but there are workarounds.
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Fastest way to get the first object from a queryset in django?
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You can use array slicing:
Entry.objects.all()[:1].get()
Which can be used with .filter():
Entry.objects.filter()[:1].get()
You wouldn't want to first turn it into a list because that would force a full database call of all the records...
How to sort with a lambda?
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To much code, you can use it like this:
#include<array>
#include<functional>
int main()
{
std::array<int, 10> vec = { 1,2,3,4,5,6,7,8,9 };
std::sort(std::begin(vec),
std::end(vec),
[](int a, int b) {return a > b; });...
Get a specific bit from byte
I have a byte, specifically one byte from a byte array which came in via UDP sent from another device. This byte stores the on/off state of 8 relays in the device.
...
Does a `+` in a URL scheme/host/path represent a space?
...n UrlEncodeRfcA(const S: AnsiString): AnsiString;
const
HexCharArrA: array [0..15] of AnsiChar = '0123456789ABCDEF';
var
I: Integer;
c: AnsiChar;
begin
// percent-encoding, see RFC-3986, p. 2.1
Result := S;
for I := Length(S) downto 1 do
begin
c := S[I];
case c of
'A' ...
Python Sets vs Lists
...: https://en.wikipedia.org/wiki/Hash_table
List implementation: usually an array, low level close to the metal good for iteration and random access by element index.
Set implementation: https://en.wikipedia.org/wiki/Hash_table, it does not iterate on a list, but finds the element by computing a hash...
C语言结构体里的成员数组和指针 - C/C++ - 清泛网 - 专注C/C++及内核技术
...”这种玩法合法了。关于GCC对于这个事的文档在这里：“Arrays of Length Zero”，文档中给了一个例子（我改了一下，改成可以运行的了）：
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#include <stdlib.h>
#...
How is the fork/join framework better than a thread pool?
...unt of workload is pretty perfectly predictable from the unit's size (e.g. array length) so upfront splitting is easy. Stealing would certainly make difference in problems where the amount of workload per unit is not well predictable from the unit's size.
– Joonas Pulakka
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