大约有 43,300 项符合查询结果（耗时：0.0356秒） [XML]
Possible Loss of Fraction
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169
When you divide two int's into a floating point value the fraction portion is lost. If you cas...
Heroku free account limited?
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Heroku provides, for free, a 5MB database
Heroku provides, for free, 1 dyno. A dyno is an instance of your application running and responding to requests. If each instance of your application can serve each request in 100ms, then you get 600 requests/minute with the free account.
Your applica...
How to sort a list in Scala by two fields?
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217
rows.sortBy(r => (r.lastName, r.firstName))
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Timeout command on Mac OS X?
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130
You can use
brew install coreutils
And then whenever you need timeout, use
gtimeout
..i...
Regular expression to return text between parenthesis
...r problem is really just this simple, you don't need regex:
s[s.find("(")+1:s.find(")")]
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Convert HH:MM:SS string to seconds only in javascript
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Swift class introspection & generics
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109
Well, for one, the Swift equivalent of [NSString class] is .self (see Metatype docs, though th...
How do I update if exists, insert if not (AKA “upsert” or “merge”) in MySQL?
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191
Use INSERT ... ON DUPLICATE KEY UPDATE. For example:
INSERT INTO `usage`
(`thing_id`, `times_...
Find size of Git repository
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UPDATE git 1.8.3 introduced a more efficient way to get a rough size: git count-objects -vH (see answer by @VonC)
For different ideas of "complete size" you could use:
git bundle create tmp.bundle --all
du -sh tmp.bundle
Close (but...
What is “thread local storage” in Python, and why do I need it?
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edited Jan 28 at 21:34
Willwsharp
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