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Lodash - difference between .extend() / .assign() and .merge()
...defaultsDeep will merge child objects and the others will overwrite at the root level
Only _.assign and _.extend will overwrite a value with undefined
Tests
They all handle members at the root in similar ways.
_.assign ({}, { a: 'a' }, { a: 'bb' }) // => { a: "bb" }
_.merge ({}, { ...
How do I use valgrind to find memory leaks?
...r* string = "{ \"key\": \"value\" }";
json_error_t error;
json_t* root = json_loads(string, 0, &error); //obtaining a pointer
json_t* value = json_object_get(root, "key"); //obtaining a pointer
printf("\"%s\" is the value field.\n", json_string_value(value)); //use value
js...
Django : How can I see a list of urlpatterns?
... django.urls import URLPattern, URLResolver
urlconf = __import__(settings.ROOT_URLCONF, {}, {}, [''])
def list_urls(lis, acc=None):
if acc is None:
acc = []
if not lis:
return
l = lis[0]
if isinstance(l, URLPattern):
yield acc + [str(l.pattern)]
elif isi...
How to drop all user tables?
...
Being new to Oracle and I'm more familiar with MySQL; reseting a DB seems difficult. IN MySQL a USER is separate to a DATABASE. DROP USER username CASCADE worked for me. But in MySQL all I would have to do is DROP DATABASE and create a new one
– gawp...
__FILE__ macro shows full path
...ject, so you know in which folder the file is in, and only relative to the root of your project.
The idea is to get the size of the source directory with your build tool and just add it to the __FILE__ macro, removing the directory entirely and only showing the file name starting at your source dir...
Checking a Python module version at runtime
... be that of PyPI entry. So something like "pkg_resources.get_distribution('MySQLdb').version" won't work but "pkg_resources.get_distribution('mysql-python').version" will.
– Rahul
Aug 21 '12 at 8:17
...
ZMQ: 基本原理 - 开源 & Github - 清泛网移动版 - 专注C/C++及内核技术
...。
本文的目的是解释ØMQ架构的基本概念，它们是如何组合起来的，以及它们被如此设计的原因。
拓扑
拓扑是ØMQ最主要的概念，除非你知道“拓扑”代表什么，否则将与其他概念混淆更难...
How to update a record using sequelize for node?
...xpress-resource, and Sequelize that is used to manage datasets stored in a MySQL database.
13 Answers
...
How to define two fields “unique” as couple
... How would you handle this say if volume_number could be null? Mysql won't seem to enforce unique in that case.
– Greg
Jun 27 '11 at 17:28
27
...
How to convert array values to lowercase in PHP?
... => ['collard greens', 'kale', 'chard', 'spinach', 'lettuce'],
'root' => ['radish', 'turnip', 'potato', 'beet'],
'other' => ['brocolli', 'green beans', 'corn', 'tomatoes'],
],
'grains' => ['wheat', 'rice', 'oats'],
];
$newArray = changeValuesCase ($food, \CASE_U...