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Super slow lag/delay on initial keyboard animation of UITextField
... Thank you. This issue is still present on iOS 9.1/Xcode 7.1, Swift 2.1.
– Yaroslav
Oct 25 '15 at 16:54
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How to DROP multiple columns with a single ALTER TABLE statement in SQL Server?
... MS SQL. For fixed length types (int, numeric, float, datetime, uniqueidentifier etc) the space is consumed even for records added after the columns were dropped. To get rid of the wasted space do ALTER TABLE ... REBUILD.
sh...
Hash Code and Checksum - what's the difference?
...hashcodes make good checksums.
A checksum has a special purpose --- it verifies or checks the integrity of data (some can go beyond that by allowing for error-correction). "Good" checksums are easy to compute, and can detect many types of data corruptions (e.g. one, two, three erroneous bits).
A h...
selecting unique values from a column
...fortunate problem of DISTINCT is that it only returns that one field... so if you want the whole record, the DISTINCT is worthless (unless it is an id field, and you can do a second query where id IN that list). Good news, though, if you have multiple duplicate results as a result of a JOIN you can ...
Entity Framework: How to disable lazy loading for specific query?
Is there any way to disable lazy loading for specific query on Entity Framework 6? I want to use it regularly, but sometimes I want to disable it. I'm using virtual properties to lazy load them.
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App Inventor 2 数学积木完全指南：从加减乘除到位运算，一篇搞定所有计算...
...判断的核心
六种比较积木返回 真(true) 或 假(false)，是 if/else 条件判断的基础：
积木含义示例=等于5 = 5 -> 真!=不等于5 != 3 -> 真>大于5 > 3 -> 真>=大于等于5 >= 5 -> 真<小于3 < 5 -> 真<=小于等于5 <= 5 -&g...
How to write log base(2) in c/c++
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If you're looking for an integral result, you can just determine the highest bit set in the value and return its position.
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How do I print out the contents of an object in Rails for easy debugging?
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I generally first try .inspect, if that doesn't give me what I want, I'll switch to .to_yaml.
class User
attr_accessor :name, :age
end
user = User.new
user.name = "John Smith"
user.age = 30
puts user.inspect
#=> #<User:0x423270c @name="John Smith...
How to fix bower ECMDERR
... for me. But I found an other one. You can have a problem with your proxy. If you are behind a proxy you have to do theses steps :
put this in .bowerrc to get rid of the err ETIMEDOUT :
{
"directory": "app/bower_components",
"proxy": "http://PROXYSERVER:PORT",
"https-proxy": "https://P...
How can I check if a command exists in a shell script? [duplicate]
I am writing my first shell script. In my script I would like to check if a certain command exists, and if not, install the executable. How would I check if this command exists?
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