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How to show SQL queries run in the Rails console?
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Rails 3+
Enter this line in the console:
ActiveRecord::Base.logger = Logger.new(STDOUT)
Rails 2
Enter this line in the console:
ActiveRecord::Base.connection.instance_variable_set :@logger, Logger.new(STDOUT)
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How to programmatically cause a core dump in C/C++
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edited May 23 '17 at 11:54
Community♦
111 silver badge
answered Jun 11 '09 at 3:24
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Retrieving parameters from a URL
...lparse.urlparse(url)
print urlparse.parse_qs(parsed.query)['def']
Python 3:
import urllib.parse as urlparse
from urllib.parse import parse_qs
url = 'http://foo.appspot.com/abc?def=ghi'
parsed = urlparse.urlparse(url)
print(parse_qs(parsed.query)['def'])
parse_qs returns a list of values, so the...
disable maven download progress indication
...date
The documentation about batch mode see https://maven.apache.org/ref/3.6.1/maven-embedder/cli.html
Starting with Maven 3.6.1 (released 2019-04-04) you can use --no-transfer-progress will suppress the output of downloading messages at all without suppressing the other output.
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What are Aggregates and PODs and how/why are they special?
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583
How to read:
This article is rather long. If you want to know about both aggregates and PODs (P...
Using custom std::set comparator
...29
YLJ
2,39422 gold badges1414 silver badges2626 bronze badges
answered Apr 12 '10 at 9:10
YacobyYacoby
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In Python, how can you load YAML mappings as OrderedDicts?
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Update: In python 3.6+ you probably don't need OrderedDict at all due to the new dict implementation that has been in use in pypy for some time (although considered CPython implementation detail for now).
Update: In python 3.7+, the insertion...
App Inventor 2中文网最新上线的AI助手功能叫什么？有什么核心价值？ - AI2...
...发流程**：
1. 手动拖拽界面组件
2. 逐个配置组件属性
3. 连接代码块实现逻辑
4. 反复测试和调试
**AI2Claw开发流程**：
1. 用中文描述需求
2. AI自动生成界面和代码
3. 实时预览和调整
4. 一键部署和分享
### 2. 具体改进示...