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PostgreSQL error 'Could not connect to server: No such file or directory'
...e in my project or even try most database tasks for my Ruby on Rails 3.2 applications.
22 Answers
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Difference between Repository and Service Layer?
... bool Delete(int id);
T Get(int id);
bool SaveChanges();
}
and call Get(id). Repository layer exposes basic CRUD operations.
Service layer exposes business logic, which uses repository. Example service could look like:
public interface IUserService
{
User GetByUserName(string userNa...
Can comments be used in JSON?
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No.
The JSON should all be data, and if you include a comment, then it will be data too.
You could have a designated data element called "_comment" (or something) that would be ignored by apps that use the JSON data.
You would probably be bett...
How do I find the location of the executable in C? [duplicate]
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To summarize:
On Unixes with /proc really straight and realiable way is to:
readlink("/proc/self/exe", buf, bufsize) (Linux)
readlink("/proc/curproc/file", buf, bufsize) (FreeBSD)
readlink("/proc/self/path/a.out", buf, bufsize) (Solaris)
On Unixes without /pr...
I want to delete all bin and obj folders to force all projects to rebuild everything
I work with multiple projects, and I want to recursively delete all folders with the name 'bin' or 'obj' that way I am sure that all projects will rebuild everything (sometimes it's the only way to force Visual Studio to forget all about previous builds).
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快速开发CSS的利器LESS 系列教程 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...定义了三个块，定义了一个变量@bacColor，进行了颜色值的存储，之后由于每个块的背景颜色不同，因此直接使用变量进行计算。需要注意的是，变量与操作符（+、-符号）之间需要使用空格进行分隔。对于代码中.common-div如果不...
How to implement the Android ActionBar back button?
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In my situation I was looking for a way to not call onCreate of the parent when returning to it. To do this, I used your implementation, but called finish() instead of NavUtils.navigateUpFromSameTask(this). finish() calls my onStart instead of onCreate which was more ideal...
How do I use IValidatableObject?
... Prop1 = 1,
Prop2 = 2
};
bool validateAllProperties = false;
var results = new List<ValidationResult>();
bool isValid = Validator.TryValidateObject(
toValidate,
new ValidationContext(toValidate, null, null),
...
Adding parameter to ng-click function inside ng-repeat doesn't seem to work
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One thing that really hung me up, was when I inspected this html in the browser, instead of seeing it expanded to something like:
<button ng-click="removeTask(1234)">remove</button>
I saw:
<button ng-click="removeTask(task....
Calling a function of a module by using its name (a string)
What is the best way to go about calling a function given a string with the function's name in a Python program. For example, let's say that I have a module foo , and I have a string whose content is "bar" . What is the best way to call foo.bar() ?
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