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How to append one file to another in Linux from the shell?
I have two files: file1 and file2 . How do I append the contents of file2 to file1 so that contents of file1 persist the process?
...
How to change default timezone for Active Record in Rails?
...hrice, before saving times in the database in a non-UTC format.
Note
Do not forget to restart your Rails server after modifying application.rb.
Remember that config.active_record.default_timezone can take only two values
:local (converts to the timezone defined in config.time_zone)
:utc ...
How to find time complexity of an algorithm
...e simplify 2N + 2 machine instructions to describe this as just O(N).
Why do we remove the two 2s ?
We are interested in the performance of the algorithm as N becomes large.
Consider the two terms 2N and 2.
What is the relative influence of these two terms as N becomes large? Suppose N is a mil...
Should I be using object literals or constructor functions?
...
If you don't have behaviour associated with an object (i.e. if the object is just a container for data/state), I would use an object literal.
var data = {
foo: 42,
bar: 43
};
Apply the KISS principle. If you don't need an...
Converting List to List
...
As far as I know, iterate and instantiate is the only way to do this. Something like (for others potential help, since I'm sure you know how to do this):
List<Integer> oldList = ...
/* Specify the size of the list up front to prevent resizing. */
List<String> newList = ne...
How do I fix “Failed to sync vcpu reg” error?
I'm trying to use the Intel HAX x86 emulator for Windows (8, if that matters). I installed everything and created an AVD for the android version, and everything appears correct, but when I run it, I get this output:
...
Differences in string compare methods in C#
...omparing string in C# is pretty simple. In fact there are several ways to do it. I have listed some in the block below. What I am curious about are the differences between them and when one should be used over the others? Should one be avoided at all costs? Are there more I haven't listed?
...
ByteArray 扩展 - 字节数组处理工具 · App Inventor 2 中文网
...例
基本用法
when Button1.Click
do
// 创建字节数组并添加数据
call ByteArray1.Clear
call ByteArray1.AddByte 65 // 添加字符 'A'
call ByteArray1.AddByte 66 // 添加字符 'B'
call ByteArray1.AddByte 67 // 添加字...
Cast to int vs floor
...
Do you have any source for that statement?
– HelloGoodbye
May 22 '17 at 14:48
1
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Devise Secret Key was not set
...EY_BASE environment variable instead of copying it into secrets.yml so you don't forget that your "secret key" is not secret enough!
– monozok
Oct 31 '15 at 0:08
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