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Why does JQuery have dollar signs everywhere?
...all divs, because
console.log($ === jQuery); // "true"
If you don't want to use the alias, you don't have to. And if you want $ to not be an alias for jQuery, you can use noConflict and the library will restore $ to whatever it was before jQuery took it over. (Useful if you also use Prototype or M...
Create timestamp variable in bash script
I am trying to create a timestamp variable in a shell script to make the logging a little easier. I want to create the variable at the beginning of the script and have it print out the current time whenever I issue echo $timestamp . It proving to be more difficult then I thought. Here are some thin...
Is there a timeout for idle PostgreSQL connections?
I see a lot of them. We are trying to fix our connection leak. But meanwhile, we want to set a timeout for these idle connections, maybe max to 5 minute.
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Summarizing multiple columns with dplyr? [duplicate]
... data frame with different variables and one grouping variable. Now I want to calculate the mean for each column within each group, using dplyr in R.
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Resize image in the wiki of GitHub using Markdown
...co" width="48">
Example:
Old Answer:
This should work:
[[ http://url.to/image.png | height = 100px ]]
Source: https://guides.github.com/features/mastering-markdown/
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How do you specify the Java compiler version in a pom.xml file?
...00 lines. When I compile it on netbeans, everything is fine, but if I want to run it on command line, I will get these errors:
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JSON Naming Convention (snake_case, camelCase or PascalCase) [closed]
... well as at least one more, kebab-case like longer-name).
It mostly seems to depend on what background developers of the service in question had; those with c/c++ background (or languages that adopt similar naming, which includes many scripting languages, ruby etc) often choose underscore variant; ...
ModelState.AddModelError - How can I add an error that isn't for a property?
I am checking my database in Create(FooViewModel fvm){...} to see if the fvm.prop1 and fvm.prop2 already exist in that combination; if so, I want to add an error to the modelstate, then return the whole view. I tried:
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get and set in TypeScript
I'm trying to create get and set method for a property:
9 Answers
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JPA: How to have one-to-many relation of the same Entity type
...is is possible. This is a special case of the standard bidirectional @ManyToOne/@OneToMany relationship. It is special because the entity on each end of the relationship is the same. The general case is detailed in Section 2.10.2 of the JPA 2.0 spec.
Here's a worked example. First, the entity c...