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What are the advantages of using nullptr?
...ic value whereas null pointer constants do not. A null pointer constant is converted to the null pointer of that type (whatever that is). It is required that two null pointers of the same type compare identically, and boolean conversion turns a null pointer into false. Nothing else is required. Ther...
How to import local packages without gopath
...go mod init
go mod vendor # if you have vendor/ folder, will automatically integrate
go build
This method creates a file called go.mod in your projects directory. You can then build your project with go build. If GO111MODULE=auto is set, then your project cannot be in $GOPATH.
Edit 2: The vendo...
Can I use GDB to debug a running process?
...g to the child of one shell from another.
You'll likely need to set /proc/sys/kernel/yama/ptrace_scope depending on your requirements. Many systems now default to 1 or higher.
The sysctl settings (writable only with CAP_SYS_PTRACE) are:
0 - classic ptrace permissions: a process can PTRACE_ATTACH ...
How to get name of exception that was caught in Python?
...
You can also use sys.exc_info(). exc_info() returns 3 values: type, value, traceback. On documentation: https://docs.python.org/3/library/sys.html#sys.exc_info
import sys
try:
foo = bar
except Exception:
exc_type, value, traceback = ...
Running single test from unittest.TestCase via command line
...unction.
#! /usr/bin/env python3
# -*- coding: utf-8 -*-
import os
import sys
import unittest
test_pattern = 'mytest/module/name.py'
PACKAGE_ROOT_DIRECTORY = os.path.dirname( os.path.realpath( __file__ ) )
loader = unittest.TestLoader()
start_dir = os.path.join( PACKAGE_ROOT_DIRECTORY, 'testing' ...
How do I convert Long to byte[] and back in java
How do I convert a long to a byte[] and back in Java?
12 Answers
12
...
SQL Server - copy stored procedures from one db to another
...base
DECLARE c CURSOR FOR
SELECT Definition
FROM [ResiDazeMaster].[sys].[procedures] p
INNER JOIN [ResiDazeMaster].sys.sql_modules m ON p.object_id = m.object_id
OPEN c
FETCH NEXT FROM c INTO @sql
WHILE @@FETCH_STATUS = 0
BEGIN
SET @sql = REPLACE(@sql,'''','''''')
SET @sql = 'US...
Why are function pointers and data pointers incompatible in C/C++?
I have read that converting a function pointer to a data pointer and vice versa works on most platforms but is not guaranteed to work. Why is this the case? Shouldn't both be simply addresses into main memory and therefore be compatible?
...
Convert NSNumber to int in Objective-C
I use [NSNumber numberWithInt:42] or @(42) to convert an int to NSNumber before adding it to an NSDictionary:
5 Answers...
Swift: Convert enum value to String?
...read my answer which has a quote from Apple docs. ... If you still want to convert UIApplicationState to string I'd suggest you to extend UIApplicationState with a custom computed property extension UIApplicationState { var toString() -> String { /* check self for all diff. cases and return some...