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How can I quantify difference between two images?
... "compare the pixels one by one". What does that mean? Should the test fail if ONE of the 64^2 pixel-per-pixel tests fails?
– Federico A. Ramponi
Oct 15 '08 at 13:25
...
How do I force Postgres to use a particular index?
... a particular query plan for all time.
As a very blunt hammer, useful for testing, you can use the enable_seqscan and enable_indexscan parameters. See:
Examining index usage
enable_ parameters
These are not suitable for ongoing production use. If you have issues with query plan choice, you shou...
Fast way to get image dimensions (not filesize)
...
I have done some tests with the ImageMagick identify command, using strace to record open/read/mmap/close calls to see how much data was been read from the identified image. It does depend on the file type and file size slightly, but I was ge...
C#操作XML小结 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...一个xml文档
xmlWriter.Formatting = Formatting.Indented;
xmlWriter.WriteStartDocument();
xmlWriter.WriteStartElement("Employees");
xmlWriter.WriteStartElement("Node");
xmlWriter.WriteAttributeString("genre","李赞红");
xmlWriter.WriteAttributeString("ISBN","2-3631-4");
xmlWriter.Writ...
How to read values from properties file?
...
@Value("${ds.type}")private String attr;
Using PropertySource
In the latest spring version you don't need to register PropertyPlaceHolderConfigurer with @PropertySource, I found a good link to understand version compatibility-
@PropertySource("classpath:path/filename.properties")
@Component
publ...
PHP Regex to check date is in YYYY-MM-DD format
...ember
31 days in January, March, May, July, August, October and December
Test:
The following dates should all pass validation:
1976-02-29
2000-02-29
2004-02-29
1999-01-31
The following dates should all fail validation:
2015-02-29
2015-04-31
1900-02-29
1999-01-32
2015-02-00
Range:
We'll tes...
How do I know the script file name in a Bash script?
... usually don't want to confuse the user this way), try:
me="$(basename "$(test -L "$0" && readlink "$0" || echo "$0")")"
IMO, that'll produce confusing output. "I ran foo.sh, but it's saying I'm running bar.sh!? Must be a bug!" Besides, one of the purposes of having differently-named ...
Notifier 通知扩展：功能强大的Android通知管理工具，支持通知通道、意图、...
...代码
示例
Simple Notification Test 简单通知测试
Extended Notification Test 扩展通知测试
Progress Bar Test 进度条测试
Notification Alarm Test 通知闹钟测试
Remember URS 记忆URS
KeepAw...
What is the “hasClass” function with plain JavaScript?
...Query's implementation is better and more reliable. For example: /\bbig\b/.test('big-text') returns true instead of expected false.
– Stano
Jun 18 '13 at 18:43
...
Can I underline text in an Android layout?
...
@autotravis which one is for 2.2? I did not tested it on older versions and it will be quite unfortunate if different versions handle it differently... Also at least current documentation states that it have to be escaped (link is in the answer).
–...