大约有 45,000 项符合查询结果（耗时：0.0388秒） [XML]
What's the difference between equal?, eql?, ===, and ==?
...cumentation for these methods as they're overridden in other classes, like String.
Side note: if you want to try these out for yourself on different objects, use something like this:
class Object
def all_equals(o)
ops = [:==, :===, :eql?, :equal?]
Hash[ops.map(&:to_s).zip(ops.map {|s| ...
How to print a query string with parameter values when using Hibernate
Is it possible in Hibernate to print generated SQL queries with real values instead of question marks?
30 Answers
...
Converting Symbols, Accent Letters to English Alphabet
...
Reposting my post from How do I remove diacritics (accents) from a string in .NET?
This method works fine in java (purely for the purpose of removing diacritical marks aka accents).
It basically converts all accented characters into their deAccented counterparts followed by their combining...
SQLiteDatabase.query method
...
tableColumns
null for all columns as in SELECT * FROM ...
new String[] { "column1", "column2", ... } for specific columns as in SELECT column1, column2 FROM ... - you can also put complex expressions here:
new String[] { "(SELECT max(column1) FROM table1) AS max" } would give you a colu...
How to convert URL parameters to a JavaScript object?
I have a string like this:
30 Answers
30
...
ASP.NET MVC partial views: input name prefixes
... helper class by this :
using System.Web.Mvc.Html
public static MvcHtmlString PartialFor<TModel, TProperty>(this HtmlHelper<TModel> helper, System.Linq.Expressions.Expression<Func<TModel, TProperty>> expression, string partialViewName)
{
string name = Expressi...
Android: install .apk programmatically [duplicate]
...
I solved the problem. I made mistake in setData(Uri) and setType(String).
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setDataAndType(Uri.fromFile(new File(Environment.getExternalStorageDirectory() + "/download/" + "app.apk")), "application/vnd.android.package-archive");
intent....
SQL update fields of one table from fields of another one
...tgreSQL syntax.
DO
$do$
BEGIN
EXECUTE (
SELECT
'UPDATE b
SET (' || string_agg( quote_ident(column_name), ',') || ')
= (' || string_agg('a.' || quote_ident(column_name), ',') || ')
FROM a
WHERE b.id = 123
AND a.id = b.id'
FROM information_schema.columns
WHERE t...
Understanding exactly when a data.table is a reference to (vs a copy of) another data.table
... <- DT[,new:=1L]
because the RHS already changed DT by reference. The extra DT <- is to misunderstand what := does. You can write it there, but it's superfluous.
DT is changed by reference, by :=, EVEN WITHIN FUNCTIONS :
f <- function(X){
X[,new2:=2L]
return("something else")
}...
How can I initialize base class member variables in derived class constructor?
...ase from Member idiom. It's not a code free solution, you'd have to add an extra layer of inheritance, but it gets the job done. To avoid boilerplate code you could use boost's implementation
share
|
...