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How to check if a string is a valid JSON string in JavaScript without using Try/Catch
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Heroku + node.js error (Web process failed to bind to $PORT within 60 seconds of launch)
I have my first node.js app (runs fine locally) - but I am unable to deploy it via heroku (first time w/ heroku as well). The code is below. SO doesn't let me write so much code, so I would just say that the running the code locally as well within my network shows no issue.
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MySQL一次主从数据不一致的问题解决过程 - 数据库(内核) - 清泛网 - 专注C/...
...对性能，网络影响有点大，数据丢失的应该很少
2 主库dump数据，锁库，然后同步，不好。 影响业务使用
3 percona-toolkit 中的工具来校验和同步，从介绍上来看是符合现在的情况的，使用上还需要学习和认识才行。
下面是几个...
Grouping functions (tapply, by, aggregate) and the *apply family
Whenever I want to do something "map"py in R, I usually try to use a function in the apply family.
10 Answers
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Where are my postgres *.conf files?
I have recently reinstalled postgresql 8.3 on my Ubuntu 8.04 after update. Used EnterpriseDB package. I can connect to the database locally, I see system DB postgres but I can't configure it because I can't find config files. Searched through entire hard drive and found only samples like pg_hba.con...
string c_str() vs. data()
I have read several places that the difference between c_str() and data() (in STL and other implementations) is that c_str() is always null terminated while data() is not.
As far as I have seen in actual implementations, they either do the same or data() calls c_str() .
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org.hibernate.MappingException: Could not determine type for: java.util.List, at table: College, for
I'm using Hibernate for all CRUD operations in my project. It doesn't work for One-To-Many and Many-To-One relationships. It gives me the below error.
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How to control the line spacing in UILabel
Is it possible to reduce the gap between text, when put in multiple lines in a UILabel ? We can set the frame, font size and number of lines. I want to reduce the gap between the two lines in that label.
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How does the new automatic reference counting mechanism work?
Can someone briefly explain to me how ARC works? I know it's different from Garbage Collection, but I was just wondering exactly how it worked.
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Ignore Typescript Errors “property does not exist on value of type”
In VS2013 building stops when tsc exits with code 1. This was not the case in VS2012.
10 Answers
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