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How to get the current time in YYYY-MM-DD HH:MI:Sec.Millisecond format in Java?
... below gives me the current time. But it does not tell anything about milliseconds.
15 Answers
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When should I use Struct vs. OpenStruct?
...) [table edited to align columns]:
creating 1 Mio Structs : 1.43 sec , 219 MB / 90MB (virt/res)
creating 1 Mio Class instances : 1.43 sec , 219 MB / 90MB (virt/res)
creating 1 Mio Hashes : 4.46 sec , 493 MB / 364MB (virt/res)
creating 1 Mio OpenStructs : 415.13 sec , 2464 M...
Force drop mysql bypassing foreign key constraint
...------------------------------------------------------+
1 row in set (0.00 sec)
mysql> USE emall_duplicate;
Database changed
mysql> SET FOREIGN_KEY_CHECKS = 0; ...
How do I change the data type for a column in MySQL?
...ple:
mysql> create table yar (id int);
Query OK, 0 rows affected (0.01 sec)
mysql> insert into yar values(5);
Query OK, 1 row affected (0.01 sec)
mysql> alter table yar change id id varchar(255);
Query OK, 1 row affected (0.03 sec)
Records: 1 Duplicates: 0 Warnings: 0
mysql> desc y...
Multiple queries executed in java in single statement
...ment, name varchar(10), primary key (i) );
Query OK, 0 rows affected (0.16 sec)
mysql> delimiter //
mysql> create procedure multi_query()
-> begin
-> select count(*) as name_count from tbl_mq;
-> insert into tbl_mq( names ) values ( 'ravi' );
-> select last_inse...
Checking if a key exists in a JavaScript object?
...ion in the Java language).
http://www.ecma-international.org/ecma-262/5.1/#sec-8.10
The Property Descriptor type is used to explain the manipulation and reification of named property attributes. Values of the Property Descriptor type are records composed of named fields where each field’s name is...
Easily measure elapsed time
...me difference = " << std::chrono::duration_cast<std::chrono::microseconds>(end - begin).count() << "[µs]" << std::endl;
std::cout << "Time difference = " << std::chrono::duration_cast<std::chrono::nanoseconds> (end - begin).count() << "[ns]" << ...
Building and running app via Gradle and Android Studio is slower than via Eclipse
I have a multi-project (~10 modules) of which building takes about 20-30 seconds each time. When I press Run in Android Studio, I have to wait every time to rebuild the app, which is extremely slow.
...
How do we control web page caching, across all browsers?
...he request, so you don't need to specify it at all.
How to set it?
Using PHP:
header("Cache-Control: no-cache, no-store, must-revalidate"); // HTTP 1.1.
header("Pragma: no-cache"); // HTTP 1.0.
header("Expires: 0"); // Proxies.
Using Java Servlet, or Node.js:
response.setHeader("Cache-Control"...
how to return index of a sorted list? [duplicate]
...property as your sort key (and unzipping after).
combined = zip(obj_list, secondary_list)
zipped_sorted = sorted(combined, key=lambda x: x[0].some_obj_attribute)
obj_list, secondary_list = map(list, zip(*zipped_sorted))
Here's a simple example, using strings to represent your object. Here we use ...