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为AppInventor2开发拓展(Extension) · App Inventor 2 中文网
...nentContainer container;
private Context context;
private static final String LOG_TAG = "CB";
private boolean suppressToast;
public Clipboard(ComponentContainer container) {
super(container.$form());
this.container = container;
context = (Context) container.$context();
Log....
Rails 3 datatypes?
...an I find a list of data types that can be used in rails 3? (such as text, string, integer, float, date, etc.?) I keep randomly learning about new ones, but I'd love to have a list I could easily refer to.
...
Shorthand way for assigning a single field in a record, while copying the rest of the fields?
...lds. In GHCi you can do --
> data Foo = Foo { a :: Int, b :: Int, c :: String } -- define a Foo
> let foo = Foo { a = 1, b = 2, c = "Hello" } -- create a Foo
> let updateFoo x = x { c = "Goodbye" } -- function to update Foos
> updateFoo foo ...
Printing leading 0's in C?
...
You need to know the maximum length of the final padded string. Alternatively, if you always wanted 5 leading zeros, then "00000" + integer.to_s. etc
– mlambie
Mar 4 at 5:21
...
How can I pass selected row to commandLink inside dataTable or ui:repeat?
...ataTable>
backing bean
public void viewDetail(ActionEvent e) {
String trxNo = getFacesContext().getRequestParameterMap().get("trxNo");
for (DTO item : list) {
if (item.get("trxNo").toString().equals(trxNo)) {
System.out.println(trxNo);
setSelectedItem...
What's the difference between Ruby's dup and clone methods?
...e object, but where the apple object references other objects (such as the String object color), those references are not copied. Instead, apple and orange both reference the same object! In our example, the reference is the string object 'red'. When orange uses the append method, <<, to modif...
Most used parts of Boost [closed]
...st
program_options (just brilliant!)
test (for all my unit testing needs).
String algorithms
String tokenizer
format (type-safe printf style string formatting)
smart ptrs
Boost was a massive help when I wrote my first cross-platform app - without it I really would have struggled.
...
How to get existing fragments when using FragmentPagerAdapter
...y FragmentPagerAdapter
switch (position) {
case 0:
String firstTag = createdFragment.getTag();
break;
case 1:
String secondTag = createdFragment.getTag();
break;
}
// ... save the tags somewhere so you can reference them lat...
How to add new column to MYSQL table?
...
@StevenTrainor: Do not use the string in your text box as such in the SQL statement. You must make sure you escape it in order to avoid an SQL injection vulnerability.
– Costi Ciudatu
Feb 1 '14 at 21:56
...
Spring DAO vs Spring ORM vs Spring JDBC
...rst, last from person where id=?",
rs -> new Person(rs.getString(1), rs.getString(2)),
134561351656L);
Spring-JDBC also provides a JdbcDaoSupport, that you can extend to develop your DAO. It basically defines 2 properties: a DataSource and a JdbcTemplate that both ca...