nyrahul

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nyrahul

Verifying my Blockstack ID is secured with the address 1FhDaxSAbL7yf78wAgtZshqvt7EJsC4mfx https://explorer.blockstack.org/address/1FhDaxSAbL7yf78wAgtZshqvt7EJsC4mfx

nyrahul

Iptables ip/port range spec:

Multiple individual ports:
iptables -t mangle -A OUTPUT -p udp --match multiport --dports 110,143,993,955 -j MARK --set-mark 13

Port Range:
iptables -t mangle -A OUTPUT -p udp --match multiport --dports 1024:3000 -j MARK --set-mark 13

Multiple Port ranges:
iptables -t mangle -A OUTPUT -p udp --match multiport --dports 1000:2000,3000:4000 -j MARK --set-mark 13

nyrahul

bool isPowOf2(val)
{
   return val && !( val & ( val - 1));
   // val && is required so that val=0 is handled. 0 is not the pow of 2
}


/* increment val only if MAX_UINT val not reached. Use-case: for stats incr, you dont want the val to cycle */
#define STAT(S) (S) += (!!(S ^ 0xffffffff))  // S will incr by 1 only till it reach 0xffffffff

nyrahul

---
Language:        Cpp
# BasedOnStyle:  WebKit
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nyrahul

Checks: '-*,readability-identifier-naming'
CheckOptions:
    - { key: readability-identifier-naming.NamespaceCase,       value: lower_case }
    - { key: readability-identifier-naming.ClassCase,           value: CamelCase  }
    - { key: readability-identifier-naming.PrivateMemberPrefix, value: m_         }   
    - { key: readability-identifier-naming.StructCase,          value: CamelCase  }
    - { key: readability-identifier-naming.FunctionCase,        value: CamelCase }
    - { key: readability-identifier-naming.VariableCase,        value: camelBack }
    - { key: readability-identifier-naming.GlobalConstantCase,  value: UPPER_CASE }
    - { key: readability-identifier-naming.GlobalVariableCase,  value: camelBack }

nyrahul

CC=gcc
AR=ar
V = 0

ACTUAL_CC := $(CC)
CC_0 = @echo "CC [$<]"; $(ACTUAL_CC)
CC_1 = $(ACTUAL_CC)
CC = $(CC_$(V))

ACTUAL_AR := $(AR)

nyrahul

perf record --call-graph dwarf -p PID

perf report --call-graph=graph,0.001,calle,function,percent --sort=symbol
perf report --call-graph=graph,0.001,calle,function,count --sort=symbol

nyrahul

// Example code which shows how to compare the two typedefs for size equivalency.

#define CONCAT_(a,b) a##b
#define CONCAT(a,b) CONCAT_(a, b)
#define STATIC_ASSERT(e) \
    ; enum { CONCAT(assert_line_, __LINE__) = 1/(int)(!!(e)) }

/* Note that ; is needed before enum if the STATIC_ASSERT is added right after case or label statement */
/* Note that multiple CONCATs are needed so that __LINE__ could be expanded .. Thus you can now have multiple STATIC_ASSERTs in the same code block */

nyrahul

wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | sudo apt-key add -
sudo apt-add-repository "deb http://apt.llvm.org/xenial/ llvm-toolchain-xenial-6.0 main"
sudo apt-get update
sudo apt-get install -y clang-6.0 clang-tidy