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How to tell if rails is in production?
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33
2 easy ways:
tail -f log/production.log
if there are entries populating that log after you h...
How to start two threads at “exactly” the same time
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135
To start the threads at exactly the same time (at least as good as possible), you can use a Cyc...
How to select last two characters of a string
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432
You can pass a negative index to .slice(). That will indicate an offset from the end of the set...
What is the _snowman param in Ruby on Rails 3 forms for?
In Ruby on Rails 3 (currently using Beta 4), I see that when using the form_tag or form_for helpers there is a hidden field named _snowman with the value of ☃ ( Unicode \x9731) showing up.
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PHP Foreach Pass by Reference: Last Element Duplicating? (Bug?)
... 'foo'.
Loop 2, the value and $arr[2] become $arr[1], which is 'bar'.
Loop 3, the value and $arr[2] become $arr[2], which is 'bar' (because of loop 2).
The value 'baz' is actually lost at the first call of the second foreach loop.
Debugging the Output
For each iteration of the loop, we'll echo the v...
Round a double to 2 decimal places [duplicate]
If the value is 200.3456 , it should be formatted to 200.34 .
If it is 200 , then it should be 200.00 .
13 Answers
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In Gradle, how do I declare common dependencies in a single place?
... [ // Groovy map literal
spring_core: "org.springframework:spring-core:3.1",
junit: "junit:junit:4.10"
]
From a child script, you can then use the dependency declarations like so:
dependencies {
compile libraries.spring_core
testCompile libraries.junit
}
To share dependency decl...
Improve INSERT-per-second performance of SQLite
...#pragma_journal_mode
– OneWorld
Jan 31 '14 at 8:52
4
It's been a while, my suggestions applied fo...
RuntimeWarning: invalid value encountered in divide
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evadeflow
3,8243030 silver badges3737 bronze badges
answered Apr 16 '14 at 18:05
Yan ZhuYan Zhu
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How to join absolute and relative urls?
...urljoin(url1, url2)
'http://127.0.0.1/test1/test4/test6.xml'
With Python 3 (where urlparse is renamed to urllib.parse) you could use it as follow:
>>> import urllib.parse
>>> urllib.parse.urljoin(url1, url2)
'http://127.0.0.1/test1/test4/test6.xml'
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