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# Zheng Luohtfy96

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Created Dec 5, 2019
Install conan packages and build with cmake_multi generator
View install_dep_and_build
 #!/bin/bash # Usage: # Assuming you are in ROOT/build # and ROOT contains conanfile.txt and CMakeLists.txt # ./install_dep_and_build [Debug|Release|RelWithDebInfo] # Prerequisite: # Make sure you have # [generators]
Created Oct 12, 2019
libwasmfoo
View build.sh
 _deps/wasiclang-src/opt/wasi-sdk/bin/clang --sysroot _deps/wasiclang-src/opt/wasi-sdk/share/wasi-sysroot stb_vorbis.c -c -o stb_vorbis. _deps/wasiclang-src/opt/wasi-sdk/bin/clang -Wl,--export-all --sysroot _deps/wasiclang-src/opt/wasi-sdk/share/wasi-sysroot *.o -o lib.wasm cargo/release/lucetc --bindings _deps/mod_lucet-src/lucet-wasi/bindings.json --reserved-size 256MiB lib.wasm -o libwasmfoo.so --opt-level 2
Created Sep 23, 2019
Detecting child exit with pipe
View childexit-pipe.c
 #include #include #include #include #include #include #include
Last active Dec 19, 2018
Solution to CF Educational Round 56 Problem E, with CDQ divide-and-conquer （CDQ分治）
View cdq.cpp
 #include /* https://codeforces.com/contest/1093/problem/E Convert all modification and query into single-point events (t, x, y). Initially sort by t, for each interval, recursively handle independent two parts. Then calc the interference between part one and two: only mod in part 1 can affect result in part 2. Therefore, we can sort part1 and 2 respectively by x, then process all mod event in part 1 and all query events in part 2 in a sort-merge-like way. The Y-dimension is maintained with a fenwick tree. In the end all elements will be sorted by x.
Created Oct 4, 2018
discrete
View discrete.cpp
 #include using namespace std; int main() { vector a {1, 3, 3, 2, 5}; vector b; for (int i=0; i
Created Sep 19, 2018
Proof of identication
View proof.md

I hereby claim:

• I am the person who sends Wechat messages and moments at Sept 18 22:07 - 22:17 PDT from account @VicLuo96

To claim this, I sign this message with my pubkey `0x98809CA08BF5662A`:

``````I hereby claim:

- I am the person who sends Wechat messages and moments at Sept 18 22:07 - 22:17 PDT from account @VicLuo96
``````
Created Jul 29, 2018
GCJ Kickstart Round D Problem A: Solution and sample data
View A-small-attempt-3.out
 Case #1: 13 Case #2: IMPOSSIBLE Case #3: 2 Case #4: 386239 Case #5: IMPOSSIBLE Case #6: IMPOSSIBLE Case #7: IMPOSSIBLE Case #8: 84609596512776 Case #9: 0 Case #10: 1155268877829
Created Jun 27, 2018
My feedly feeds collection
View feeds.opml
 Vic subscriptions in feedly Cloud
Last active Dec 19, 2018
Restrict C++ unsafe behaviors in unsafe{} block using clang-query and simple commands
View README.md

C++ has a lot of dark corners. Unfortunately, sometimes we need to allow inexperienced developers to write some C++ code to meet the deadline. The intersection of the two cases often makes things worse: programmers used to delegate memory management to garbage collection tend to throw off `new` everywhere in the source, and those stuck with compile error will use every evil hack to get around with it. Code review is a feasible way to ensure code quality in this case, but a better choice is to restrict them into a relatively safe subset of the language.

In this article, I will show how to use `clang-query` and a simple script to restrict some unsafe behaviors in `unsafe` block/namespace using simple commands:

```#include "common.hpp"

struct X {
int f: 2; // error: use of bit field without enclosing Unsafe
};```
Last active Jun 17, 2018
Created using remix-ide: Realtime Ethereum Contract Compiler and Runtime. Load this file by pasting this gists URL or ID at https://remix.ethereum.org/#version=soljson-v0.4.24+commit.e67f0147.js&optimize=true&gist=
View IteratedRun.sol
 pragma solidity ^0.4.0; contract IteratedRun { struct City { bytes32 name; bool visited; } address owner; City[] cities;
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