If you are using pdo, it will look like
$sql = "UPDATE users SET firstname = :firstname, lastname = :lastname WHERE id= :id";
$query = $this->pdo->prepare($sql);
$result = $query->execute(array(':firstname' => $firstname, ':lastname' => $lastname, ':id' => $id));
UPDATE `tbl_user` SET `name`=concat('tbl_user.first_name','tbl_user.last_name') WHERE student_roll>965
UPDATE
receipt_invoices dest,
(
SELECT
`receipt_id`,
CAST((net * 100) / 112 AS DECIMAL (11, 2)) witoutvat
FROM
receipt
WHERE CAST((net * 100) / 112 AS DECIMAL (11, 2)) != total
AND vat_percentage = 12
) src
SET
dest.price = src.witoutvat,
dest.amount = src.witoutvat
WHERE col_tobefixed = 1
AND dest.`receipt_id` = src.receipt_id ;
Hope this will help you in a case where you have to match and update between two tables.
For recent SQL:
select * from v$sql
For history:
select * from dba_hist_sqltext
You can always take the CTE, (Common Tabular Expression), approach.
;WITH updateCTE AS
(
SELECT ID, TITLE
FROM HOLD_TABLE
WHERE ID = 101
)
UPDATE updateCTE
SET TITLE = 'TEST';
Try like this:
$data = array('current_login' => date('Y-m-d H:i:s'));
$this->db->set('last_login', 'current_login', false);
$this->db->where('id', 'some_id');
$this->db->update('login_table', $data);
Pay particular attention to the set()
call's 3rd parameter. false
prevents CodeIgniter from quoting the 2nd parameter -- this allows the value to be treated as a table column and not a string value. For any data that doesn't need to special treatment, you can lump all of those declarations into the $data
array.
The query generated by above code:
UPDATE `login_table`
SET last_login = current_login, `current_login` = '2018-01-18 15:24:13'
WHERE `id` = 'some_id'
Use "REPLACE" to remove special characters.
REPLACE(ColumnName ,' " ','')
Ex: -
--Query ---
DECLARE @STRING AS VARCHAR(100)
SET @STRING ='VI''RA""NJA "'
SELECT @STRING
SELECT REPLACE(REPLACE(@STRING,'''',''),'"','') AS MY_NAME
--Result---
VI'RA""NJA"
If you need to update user information for a specific user ID "x",
The ViewModel will initialize an instance of dbManager to access the database. The code should look like this:
@Entity
class User{
@PrimaryKey
String userId;
String username;
}
Interface UserDao{
//forUpdate
@Update
void updateUser(User user)
}
Class DbManager{
//AppDatabase gets the static object o roomDatabase.
AppDatabase appDatabase;
UserDao userDao;
public DbManager(Application application ){
appDatabase = AppDatabase.getInstance(application);
//getUserDao is and abstract method of type UserDao declared in AppDatabase //class
userDao = appDatabase.getUserDao();
}
public void updateUser(User user, boolean isUpdate){
new InsertUpdateUserAsyncTask(userDao,isUpdate).execute(user);
}
public static class InsertUpdateUserAsyncTask extends AsyncTask<User, Void, Void> {
private UserDao userDAO;
private boolean isInsert;
public InsertUpdateBrandAsyncTask(BrandDAO userDAO, boolean isInsert) {
this. userDAO = userDAO;
this.isInsert = isInsert;
}
@Override
protected Void doInBackground(User... users) {
if (isInsert)
userDAO.insertBrand(brandEntities[0]);
else
//for update
userDAO.updateBrand(users[0]);
//try {
// Thread.sleep(1000);
//} catch (InterruptedException e) {
// e.printStackTrace();
//}
return null;
}
}
}
Class UserViewModel{
DbManager dbManager;
public UserViewModel(Application application){
dbmanager = new DbMnager(application);
}
public void updateUser(User user, boolean isUpdate){
dbmanager.updateUser(user,isUpdate);
}
}
Now in your activity or fragment initialise your UserViewModel like this:
UserViewModel userViewModel = ViewModelProviders.of(this).get(UserViewModel.class);
Then just update your user item this way, suppose your userId is 1122 and userName is "xyz" which has to be changed to "zyx".
Get an userItem of id 1122 User object
User user = new user(); if(user.getUserId() == 1122){ user.setuserName("zyx"); userViewModel.updateUser(user); }
This is a raw code, hope it helps you.
Happy coding
The question is old but I felt the best answer hadn't been given, yet.
Is there an
UPDATE
syntax ... without specifying the column names?
You don't need to know any column names except for some unique column(s) to join on (id
in the example). Works reliably for any possible corner case I can think of.
This is specific to PostgreSQL. I am building dynamic code based on the the information_schema, in particular the table information_schema.columns
, which is defined in the SQL standard and most major RDBMS (except Oracle) have it. But a DO
statement with PL/pgSQL code executing dynamic SQL is totally non-standard PostgreSQL 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 table_name = 'a' -- table name, case sensitive
AND table_schema = 'public' -- schema name, case sensitive
AND column_name <> 'id' -- all columns except id
);
END
$do$;
Assuming a matching column in b
for every column in a
, but not the other way round. b
can have additional columns.
WHERE b.id = 123
is optional, to update a selected row.
Related answers with more explanation:
You still need to know the list of column names that both tables share. With a syntax shortcut for updating multiple columns - shorter than what other answers suggested so far in any case.
UPDATE b
SET ( column1, column2, column3)
= (a.column1, a.column2, a.column3)
FROM a
WHERE b.id = 123 -- optional, to update only selected row
AND a.id = b.id;
This syntax was introduced with Postgres 8.2 in 2006, long before the question was asked. Details in the manual.
Related:
B
If all columns of A
are defined NOT NULL
(but not necessarily B
),
and you know the column names of B
(but not necessarily A
).
UPDATE b
SET (column1, column2, column3, column4)
= (COALESCE(ab.column1, b.column1)
, COALESCE(ab.column2, b.column2)
, COALESCE(ab.column3, b.column3)
, COALESCE(ab.column4, b.column4)
)
FROM (
SELECT *
FROM a
NATURAL LEFT JOIN b -- append missing columns
WHERE b.id IS NULL -- only if anything actually changes
AND a.id = 123 -- optional, to update only selected row
) ab
WHERE b.id = ab.id;
The NATURAL LEFT JOIN
joins a row from b
where all columns of the same name hold same values. We don't need an update in this case (nothing changes) and can eliminate those rows early in the process (WHERE b.id IS NULL
).
We still need to find a matching row, so b.id = ab.id
in the outer query.
db<>fiddle here
Old sqlfiddle.
This is standard SQL except for the FROM
clause.
It works no matter which of the columns are actually present in A
, but the query cannot distinguish between actual NULL values and missing columns in A
, so it is only reliable if all columns in A
are defined NOT NULL
.
There are multiple possible variations, depending on what you know about both tables.
UPDATE im
SET mf_item_number = gm.SKU --etc
FROM item_master im
JOIN group_master gm
ON im.sku = gm.sku
JOIN Manufacturer_Master mm
ON gm.ManufacturerID = mm.ManufacturerID
WHERE im.mf_item_number like 'STA%' AND
gm.manufacturerID = 34
To make it clear... The UPDATE
clause can refer to an table alias specified in the FROM
clause. So im
in this case is valid
UPDATE A
SET foo = B.bar
FROM TableA A
JOIN TableB B
ON A.col1 = B.colx
WHERE ...
You can also use REPLACE()
:
UPDATE Table
SET Column = REPLACE(Column, 'Test123', 'Test')
The following will update all rows in one table
Update Table Set
Column1 = 'New Value'
The next one will update all rows where the value of Column2 is more than 5
Update Table Set
Column1 = 'New Value'
Where
Column2 > 5
There is all Unkwntech's example of updating more than one table
UPDATE table1, table2 SET
table1.col1 = 'value',
table2.col1 = 'value'
WHERE
table1.col3 = '567'
AND table2.col6='567'
Another possible reason for the empty string, rather than a true null is that the field is an index or is part of an index. This happened to me: using phpMyAdmin, I edited the structure of a field in one of my tables to allow NULLs by checking the "Null" checkbox then hitting the "Save" button. "Table pricing has been altered successfully" was displayed so I assumed that the change happened -- it didn't. After doing an UPDATE to set all of those fields to NULL, they were, instead, set to empty strings, so I took a look at the table structure again and saw that the "Null" column for that field was set to 'no'. That's when I realized that the field was part of the Primary key!
Try this:
DELIMITER $$
CREATE TRIGGER occupy_trig
AFTER INSERT ON `OccupiedRoom` FOR EACH ROW
begin
DECLARE id_exists Boolean;
-- Check BookingRequest table
SELECT 1
INTO @id_exists
FROM BookingRequest
WHERE BookingRequest.idRequest= NEW.idRequest;
IF @id_exists = 1
THEN
UPDATE BookingRequest
SET status = '1'
WHERE idRequest = NEW.idRequest;
END IF;
END;
$$
DELIMITER ;
Found a solution:
mysql> UPDATE table SET last_update=now(), last_monitor=last_update WHERE id=1;
I found this in MySQL Docs and after a few tests it works:
the following statement sets col2 to the current (updated) col1 value, not the original col1 value. The result is that col1 and col2 have the same value. This behavior differs from standard SQL.
UPDATE t1 SET col1 = col1 + 1, col2 = col1;
To update the content of existing rows use the UPDATE
statement:
UPDATE table_name SET table_column = 'test';
Syntax strictly depends on which SQL DBMS you're using. Here are some ways to do it in ANSI/ISO (aka should work on any SQL DBMS), MySQL, SQL Server, and Oracle. Be advised that my suggested ANSI/ISO method will typically be much slower than the other two methods, but if you're using a SQL DBMS other than MySQL, SQL Server, or Oracle, then it may be the only way to go (e.g. if your SQL DBMS doesn't support MERGE
):
ANSI/ISO:
update ud
set assid = (
select sale.assid
from sale
where sale.udid = ud.id
)
where exists (
select *
from sale
where sale.udid = ud.id
);
MySQL:
update ud u
inner join sale s on
u.id = s.udid
set u.assid = s.assid
SQL Server:
update u
set u.assid = s.assid
from ud u
inner join sale s on
u.id = s.udid
PostgreSQL:
update ud
set assid = s.assid
from sale s
where ud.id = s.udid;
Note that the target table must not be repeated in the FROM
clause for Postgres.
Oracle:
update
(select
u.assid as new_assid,
s.assid as old_assid
from ud u
inner join sale s on
u.id = s.udid) up
set up.new_assid = up.old_assid
SQLite:
update ud
set assid = (
select sale.assid
from sale
where sale.udid = ud.id
)
where RowID in (
select RowID
from ud
where sale.udid = ud.id
);
Try this:
UPDATE table1
SET a = t2.a, b = t2.b, .......
FROM table2 t2
WHERE table1.id = t2.id
That should work in most SQL dialects, excluding Oracle.
And yes - it's a lot of typing - it's the way SQL does this.
@Mayur "4.2 [Using query with complex JOIN]" with Common Table Expressions (CTEs) did the trick for me.
WITH cte AS (
SELECT e.id, e.postcode
FROM employees e
LEFT JOIN locations lc ON lc.postcode=cte.postcode
WHERE e.id=1
)
UPDATE employee_location SET lat=lc.lat, longitude=lc.longi
FROM cte
WHERE employee_location.id=cte.id;
Hope this helps... :D
You should use PDO to prevent SQL injection risk.
You can connect to DB like this :
try {
$pdo_options[PDO::ATTR_ERRMODE] = PDO::ERRMODE_EXCEPTION;
$bdd = new PDO('mysql:host=xxxx;dbname=xxxx', 'user', 'password', $pdo_options);
$bdd->query('SET NAMES "utf8"');
} catch (PDOException $e) {
exit('Error');
}
No need to query DB to get the number of points. You can increment directly in the update query (points = points + 1
).
(note : Also, it’s not a good idea to increment the value with PHP because you need to select first the data and the value can changed if other users are updated it.)
$req = $bdd->prepare('UPDATE member_profile SET
points = points + 1
WHERE user_id = :user_id');
$req->execute(array(
'user_id' => $userid
));
If you don't want to repeat the list twice (as per @J W's answer), then put the updates in a table variable and use a JOIN
in the UPDATE
:
declare @ToDo table (FromName varchar(10), ToName varchar(10))
insert into @ToDo(FromName,ToName) values
('AAA','BBB'),
('CCC','DDD'),
('EEE','FFF')
update ts set LastName = ToName
from dbo.TestStudents ts
inner join
@ToDo t
on
ts.LastName = t.FromName
UPDATE
will change only the columns you specifically list.
UPDATE some_table
SET field1='Value 1'
WHERE primary_key = 7;
The WHERE
clause limits which rows are updated. Generally you'd use this to identify your table's primary key (or ID) value, so that you're updating only one row.
The SET
clause tells MySQL which columns to update. You can list as many or as few columns as you'd like. Any that you do not list will not get updated.
If you're able to upgrade to Postgresql 9.5, the jsonb_set
command is available, as others have mentioned.
In each of the following SQL statements, I've omitted the where
clause for brevity; obviously, you'd want to add that back.
Update name:
UPDATE test SET data = jsonb_set(data, '{name}', '"my-other-name"');
Replace the tags (as oppose to adding or removing tags):
UPDATE test SET data = jsonb_set(data, '{tags}', '["tag3", "tag4"]');
Replacing the second tag (0-indexed):
UPDATE test SET data = jsonb_set(data, '{tags,1}', '"tag5"');
Append a tag (this will work as long as there are fewer than 999 tags; changing argument 999 to 1000 or above generates an error. This no longer appears to be the case in Postgres 9.5.3; a much larger index can be used):
UPDATE test SET data = jsonb_set(data, '{tags,999999999}', '"tag6"', true);
Remove the last tag:
UPDATE test SET data = data #- '{tags,-1}'
Complex update (delete the last tag, insert a new tag, and change the name):
UPDATE test SET data = jsonb_set(
jsonb_set(data #- '{tags,-1}', '{tags,999999999}', '"tag3"', true),
'{name}', '"my-other-name"');
It's important to note that in each of these examples, you're not actually updating a single field of the JSON data. Instead, you're creating a temporary, modified version of the data, and assigning that modified version back to the column. In practice, the result should be the same, but keeping this in mind should make complex updates, like the last example, more understandable.
In the complex example, there are three transformations and three temporary versions: First, the last tag is removed. Then, that version is transformed by adding a new tag. Next, the second version is transformed by changing the name
field. The value in the data
column is replaced with the final version.
Another option:
UPDATE `table` SET the_col = current_timestamp
Looks odd, but works as expected. If I had to guess, I'd wager this is slightly faster than calling now()
.
because you are just learning I suggest you practice converting a SELECT joins to UPDATE or DELETE joins. First I suggest you generate a SELECT statement joining these two tables:
SELECT *
FROM tempDataView a
INNER JOIN tempData b
ON a.Name = b.Name
Then note that we have two table aliases a
and b
. Using these aliases you can easily generate UPDATE statement to update either table a or b. For table a you have an answer provided by JW. If you want to update b
, the statement will be:
UPDATE b
SET b.marks = a.marks
FROM tempDataView a
INNER JOIN tempData b
ON a.Name = b.Name
Now, to convert the statement to a DELETE statement use the same approach. The statement below will delete from a
only (leaving b intact) for those records that match by name:
DELETE a
FROM tempDataView a
INNER JOIN tempData b
ON a.Name = b.Name
You can use the SQL Fiddle created by JW as a playground
update tb set f1=1 where id in (select top 100 id from tb where f1=0)
SELECT emp.LoginID, emp.JobTitle, emp.BirthDate, emp.ModifiedDate ,
CASE WHEN emp.JobTitle NOT LIKE '%Document Control%' THEN emp.JobTitle
ELSE SUBSTRING(emp.JobTitle,CHARINDEX('Document Control',emp.JobTitle),LEN('Document Control'))
END
,emp.gender,emp.MaritalStatus
FROM HumanResources.Employee [emp]
WHERE JobTitle LIKE '[C-F]%'
Does this work? Untested but should get the point across.
UPDATE FUNCTIONS
SET Func_TaxRef =
(
SELECT Min(TAX.Tax_Code) AS MinOfTax_Code
FROM TAX, FUNCTIONS F1
WHERE F1.Func_Pure <= [Tax_ToPrice]
AND F1.Func_Year=[Tax_Year]
AND F1.Func_ID = FUNCTIONS.Func_ID
GROUP BY F1.Func_ID;
)
Basically for each row in FUNCTIONS, the subquery determines the minimum current tax code and sets FUNCTIONS.Func_TaxRef to that value. This is assuming that FUNCTIONS.Func_ID is a Primary or Unique key.
You need this tool and you can find the transaction and reverse it.
Or you can simply update without using join like this:
Update t1 set t1.Description = t2.Description from @tbl2 t2,tbl1 t1
where t1.ID= t2.ID
Here seems to be an even better answer with 'in' clause that allows for multiple keys for the join:
update fp_active set STATE='E',
LAST_DATE_MAJ = sysdate where (client,code) in (select (client,code) from fp_detail
where valid = 1) ...
The full example is here: http://forums.devshed.com/oracle-development-96/how-to-update-from-two-tables-195893.html - from web archive since link was dead.
The beef is in having the columns that you want to use as the key in parentheses in the where clause before 'in' and have the select statement with the same column names in parentheses. where (column1,column2) in ( select (column1,column2) from table where "the set I want" );
The update statement in all versions of SQL looks like:
update table
set col1 = expr1,
col2 = expr2,
. . .
coln = exprn
where some condition
So, the answer is that you separate the assignments using commas and don't repeat the set
statement.
If table does not have relation, just copy all in new table with row number and remove old and rename new one with old one.
Select RowNum = ROW_NUMBER() OVER(ORDER BY(SELECT NULL)) , * INTO cdm.dbo.SALES2018 from
(
select * from SALE2018) as SalesSource
WITH q AS
(
SELECT TOP 10 *
FROM messages
WHERE status = 0
ORDER BY
priority DESC
)
UPDATE q
SET status = 10
UPDATE Table1 SET col1= col2 FROM (SELECT col2, col3 FROM Table2) as newTbl WHERE col4= col3
Here col4 & col1 are in Table1. col2 & col3 are in Table2
I Am trying to update each col1 where col4 = col3 different value for each row
Use a sub query similar to the below.
UPDATE P
SET extrasPrice = sub.TotalPrice from
BookingPitches p
inner join
(Select PitchID, Sum(Price) TotalPrice
from dbo.BookingPitchExtras
Where [Required] = 1
Group by Pitchid
) as Sub
on p.Id = e.PitchId
where p.BookingId = 1
you can use update from...
something like:
update shipment set.... from shipment inner join ProfilerTest.dbo.BookingDetails on ...
They should have the same time, the update is supposed to be atomic, meaning that whatever how long it takes to perform, the action is supposed to occurs as if all was done at the same time.
If you're experiencing a different behaviour, it's time to change for another DBMS.
update
table1 t1
set
(
t1.column1,
t1.column2
) = (
select
t2.column1,
t2.column2
from
table2 t2
where
t2.column1 = t1.column1
)
where exists (
select
null
from
table2 t2
where
t2.column1 = t1.column1
);
Or this (if t2.column1 <=> t1.column1 are many to one and anyone of them is good):
update
table1 t1
set
(
t1.column1,
t1.column2
) = (
select
t2.column1,
t2.column2
from
table2 t2
where
t2.column1 = t1.column1
and
rownum = 1
)
where exists (
select
null
from
table2 t2
where
t2.column1 = t1.column1
);
Try ceiling...
SELECT Ceiling(45.01), Ceiling(45.49), Ceiling(45.99)
You need to do
Update table_xpto
set column_xpto = x.xpto_New
,column2 = x.column2New
from table_xpto xpto
inner join table_xptoNew xptoNew ON xpto.bla = xptoNew.Bla
where <clause where>
If you need a better answer, you can give us more information :)
Another solution we can use MySQL IF()
conditional function :
UPDATE test
SET field = IF(something == 1{CONDITION}, 1 {NEW VALUE}, field)
WHERE `id` = 5
MYSQL (This is my preferred way for restoring all specific column reasonId
values, based on primary key id
equivalence)
UPDATE `site` AS destination
INNER JOIN `site_copy` AS backupOnTuesday
ON backupOnTuesday.`id` = destination.`id`
SET destdestination.`reasonId` = backupOnTuesday.`reasonId`
Second possibility is,
UPDATE TableB
SET TableB.value = (
SELECT TableA.value
FROM TableA
WHERE TableA.name = TableB.name
);
Another approach when you have many updates would be to use COALESCE:
UPDATE [DATABASE].[dbo].[TABLE_NAME]
SET
[ABC] = COALESCE(@ABC, [ABC]),
[ABCD] = COALESCE(@ABCD, [ABCD])
Assuming the column is set to support NULL as a value:
UPDATE YOUR_TABLE
SET column = NULL
Be aware of the database NULL handling - by default in SQL Server, NULL is an INT. So if the column is a different data type you need to CAST/CONVERT NULL to the proper data type:
UPDATE YOUR_TABLE
SET column = CAST(NULL AS DATETIME)
...assuming column
is a DATETIME data type in the example above.
It looks like your MySql session has the safe-updates option set. This means that you can't update or delete records without specifying a key (ex. primary key
) in the where clause.
Try:
SET SQL_SAFE_UPDATES = 0;
Or you can modify your query to follow the rule (use primary key
in where clause
).
Your sql is incorrect.
$sql = mysql_query("UPDATE anstalld....
only
$sql = "UPDATE anstalld...
The easiest way is to not store the count, relying on the COUNT aggregate function to reflect the value as it is in the database:
SELECT c.category_name,
COUNT(p.post_id) AS num_posts
FROM CATEGORY c
LEFT JOIN POSTS p ON p.category_id = c.category_id
You can create a view to house the query mentioned above, so you can query the view just like you would a table...
But if you're set on storing the number, use:
UPDATE CATEGORY
SET count = count + 1
WHERE category_id = ?
..replacing "?" with the appropriate value.
UPDATE t1
LEFT JOIN
t2
ON t2.id = t1.id
SET t1.col1 = newvalue
WHERE t2.id IS NULL
Note that for a SELECT
it would be more efficient to use NOT IN
/ NOT EXISTS
syntax:
SELECT t1.*
FROM t1
WHERE t1.id NOT IN
(
SELECT id
FROM t2
)
See the article in my blog for performance details:
LEFT JOIN
compared to NOT IN
Unfortunately, MySQL
does not allow using the target table in a subquery in an UPDATE
statement, that's why you'll need to stick to less efficient LEFT JOIN
syntax.
That's usually what stored procedures are for: to implement several SQL statements in a sequence. Using rollbacks, you can ensure that they are treated as one unit of work, ie either they are all executed or none of them are, to keep data consistent.
You said that budgetpost is alphanumeric. That means it is looking for comparisons against strings. You should try enclosing your parameters in single quotes (and you are missing the final THEN in the Case expression).
UPDATE tab1
SET budgpost_gr1= CASE
WHEN (budgpost in ('1001','1012','50055')) THEN 'BP_GR_A'
WHEN (budgpost in ('5','10','98','0')) THEN 'BP_GR_B'
WHEN (budgpost in ('11','876','7976','67465')) THEN 'What?'
ELSE 'Missing'
END
something like below
var idList=new int[]{1, 2, 3, 4};
using (var db=new SomeDatabaseContext())
{
var friends= db.Friends.Where(f=>idList.Contains(f.ID)).ToList();
friends.ForEach(a=>a.msgSentBy='1234');
db.SaveChanges();
}
you can update multiple fields as below
friends.ForEach(a =>
{
a.property1 = value1;
a.property2 = value2;
});
alternatively, SQL%ROWCOUNT
you can use this within the procedure without any need to declare a variable
Use:
UPDATE table1
SET col1 = othertable.col2,
col2 = othertable.col3
FROM othertable
WHERE othertable.col1 = 123;
Use:
INSERT INTO table1 (col1, col2)
SELECT col1, col2
FROM othertable
You don't need the VALUES
syntax if you are using a SELECT to populate the INSERT values.
I want to change or update my ContactNo to 8018070999 where there is 8018070777 using Case statement
update [Contacts] set contactNo=(case
when contactNo=8018070777 then 8018070999
else
contactNo
end)
Try it like this:
UPDATE a
SET a.CalculatedColumn= b.[Calculated Column]
FROM table1 a INNER JOIN table2 b ON a.commonfield = b.[common field]
WHERE a.BatchNO = '110'
You should highly consider using an ORDER BY
if you intend to LIMIT your UPDATE, because otherwise it will update in the ordering of the table, which might not be correct.
But as Will A said, it only allows limit on row_count, not offset.
public function updtitle()
{
$data = array(
'table_name' => 'your_table_name_to_update', // pass the real table name
'id' => $this->input->post('id'),
'title' => $this->input->post('title')
);
$this->load->model('Updmodel'); // load the model first
if($this->Updmodel->upddata($data)) // call the method from the model
{
// update successful
}
else
{
// update not successful
}
}
public function upddata($data) {
extract($data);
$this->db->where('emp_no', $id);
$this->db->update($table_name, array('title' => $title));
return true;
}
The active record query is similar to
"update $table_name set title='$title' where emp_no=$id"
Use a backtick (on the ~ key) instead;
`O'Brien`
If your DBMS doesn't support distinct with multiple columns like this:
select distinct(col1, col2) from table
Multi select in general can be executed safely as follows:
select distinct * from (select col1, col2 from table ) as x
As this can work on most of the DBMS and this is expected to be faster than group by solution as you are avoiding the grouping functionality.
We can concat same column or also other column of the table.
You should use ContextWrapper like this:
ContextWrapper cw = new ContextWrapper(context);
File directory = cw.getDir("media", Context.MODE_PRIVATE);
As always, refer to documentation, ContextWrapper has a lot to offer.
Another way to fix this would be to go to the properties of the server on eclipse (right click on server -> properties) In general tab you would see location as workspace.metadata. Click on switch location.
You need to include the path of the libraries inside /etc/ld.so.conf, and rerun ldconfig to upate the list
Other possibility is to include in the env variable LD_LIBRARY_PATH the path to your library, and rerun the executable.
check the symbolic links if they point to a valid library ...
You can add the path directly in /etc/ld.so.conf, without include...
run ldconfig -p
to see whether your library is well included in the cache.
Pandas offer a great way to manipulate tables, as you can make binning easy (binning a dataframe in pandas in Python) and calculate statistics. Other thing that is great in pandas is the Panel class that you can join series of layers with different properties and combine it using groupby function.
As you can see here there is a very simple way to do that.
In your DialogFragment
add an interface listener like:
public interface EditNameDialogListener {
void onFinishEditDialog(String inputText);
}
Then, add a reference to that listener:
private EditNameDialogListener listener;
This will be used to "activate" the listener method(s), and also to check if the parent Activity/Fragment implements this interface (see below).
In the Activity
/FragmentActivity
/Fragment
that "called" the DialogFragment
simply implement this interface.
In your DialogFragment
all you need to add at the point where you'd like to dismiss the DialogFragment
and return the result is this:
listener.onFinishEditDialog(mEditText.getText().toString());
this.dismiss();
Where mEditText.getText().toString()
is what will be passed back to the calling Activity
.
Note that if you want to return something else simply change the arguments the listener takes.
Finally, you should check whether the interface was actually implemented by the parent activity/fragment:
@Override
public void onAttach(Context context) {
super.onAttach(context);
// Verify that the host activity implements the callback interface
try {
// Instantiate the EditNameDialogListener so we can send events to the host
listener = (EditNameDialogListener) context;
} catch (ClassCastException e) {
// The activity doesn't implement the interface, throw exception
throw new ClassCastException(context.toString()
+ " must implement EditNameDialogListener");
}
}
This technique is very flexible and allow calling back with the result even if your don;t want to dismiss the dialog just yet.
You could use the library lxml (Note top level link is now spam) , which is a superset of ElementTree. Its tostring() method includes a parameter pretty_print - for example:
>>> print(etree.tostring(root, pretty_print=True))
<root>
<child1/>
<child2/>
<child3/>
</root>
String.split
implementations will have serious limitations if the data in a tab-delimited field itself contains newline, tab and possibly " characters.
TAB-delimited formats have been around for donkey's years, but format is not standardised and varies. Many implementations don't escape characters (newlines and tabs) appearing within a field. Rather, they follow CSV conventions and wrap any non-trivial fields in "double quotes". Then they escape only double-quotes. So a "line" could extend over multiple lines.
Reading around I heard "just reuse apache tools", which sounds like good advice.
In the end I personally chose opencsv. I found it light-weight, and since it provides options for escape and quote characters it should cover most popular comma- and tab- delimited data formats.
Example:
CSVReader tabFormatReader = new CSVReader(new FileReader("yourfile.tsv"), '\t');
I know already answered but who looking for 'Fri' like this
for Fri -
SimpleDateFormat sdf = new SimpleDateFormat("EEE");
Date d = new Date();
String dayOfTheWeek = sdf.format(d);
and who wants full date string they can use 4E for Friday
For Friday-
SimpleDateFormat sdf = new SimpleDateFormat("EEEE");
Date d = new Date();
String dayOfTheWeek = sdf.format(d);
Enjoy...
As the authors of the tool, we of course use SmartInspect for logging and tracing .NET applications. We usually use the named pipe protocol for live logging and (encrypted) binary log files for end-user logs. We use the SmartInspect Console as the viewer and monitoring tool.
There are actually quite a few logging frameworks and tools for .NET out there. There's an overview and comparison of the different tools on DotNetLogging.com.
I believe that, if you need to use the %20
variant, you could perhaps use rawurlencode()
.
Make sure you are putting breakpoint in correct source file. Some tools create multiple copies of code and we try on different source file.
Solution: Instead of opening file using shortcut like Ctrl+P
or Ctrl+R
, open it from File Navigator. In Source tab, there is icon for it at left top. Using it we can open correct source file.
You code looks like automatically generated from other code - you should check that html elements with id=i1
and i2
and name=username
and password
exists before processing them.
Just academic version without having clause:
select *
from (
select gid, count(*) as tmpcount from gd group by gid
) as tmp
where tmpcount > 10;
If you want to access the data in instance B from the instance A. Then this is the query, you can edit your respective credential.
CREATE DATABASE LINK dblink_passport
CONNECT TO xxusernamexx IDENTIFIED BY xxpasswordxx
USING
'(DESCRIPTION=
(ADDRESS=
(PROTOCOL=TCP)
(HOST=xxipaddrxx / xxhostxx )
(PORT=xxportxx))
(CONNECT_DATA=
(SID=xxsidxx)))';
After executing this query access table
SELECT * FROM tablename@dblink_passport;
You can perform any operation DML, DDL, DQL
It's a bit late but I came across this post.
It's not perfect but here's what I do.
HTML Code
<div class="showcase-menu-social"><img class="margin-left-20" src="images/graphics/facebook-50x50.png" alt="facebook-50x50" width="50" height="50" /><img class="margin-left-20" src="images/graphics/twitter-50x50.png" alt="twitter-50x50" width="50" height="50" /><img class="margin-left-20" src="images/graphics/youtube-50x50.png" alt="youtube-50x50" width="50" height="50" /></div>
CSS Code
.showcase-menu {
margin-left:20px;
margin-right:20px;
padding: 0px 20px 0px 20px;
background-color: #C37500;
behavior: url(/css/border-radius.htc);
border-radius: 20px;
}
.showcase-menu-social img:hover {
background-color: #C37500;
opacity:0.7 !important;
filter:alpha(opacity=70) !important; /* For IE8 and earlier */
box-shadow: 0 0 0px #000000 !important;
}
Now my border radius of 20px matches up exactly with the image border radius. As you can see the .showcase-menu has the same background as the .showcase-menu-social. What this does is to allow the 'opacity' to take effect and no 'square' background or border shows, thus the image slightly reduces it's saturation on hover.
It's a nice effect and does give the viewer the feedback that the image is in focus. I'm fairly sure on a darker background, it would have even a better effect.
The nice thing is that this is valid HTML-CSS code and will validate. To be honest, it should work on non-image elements just as good as images.
Enjoy!
For those who are new to SOAP
and want a quick explanation and guide, I strongly recommend this awesome medium article.
You can also use node-soap
package, with this simple tutorial.
To use shorthand to get the direction:
int direction = column == 0
? 0
: (column == _gridSize - 1 ? 1 : rand.Next(2));
To simplify the code entirely:
if (column == gridSize - 1 || rand.Next(2) == 1)
{
}
else
{
}
Just use os.path.join
to join your path with the filename and extension. Use sys.argv
to access arguments passed to the script when executing it:
#!/usr/bin/env python3
# coding: utf-8
# import netCDF4 as nc
import numpy as np
import numpy.ma as ma
import csv as csv
import os.path
import sys
basedir = '/data/reu_data/soil_moisture/'
suffix = 'nc'
def read_fid(filename):
fid = nc.MFDataset(filename,'r')
fid.close()
return fid
def read_var(file, varname):
fid = nc.Dataset(file, 'r')
out = fid.variables[varname][:]
fid.close()
return out
if __name__ == '__main__':
if len(sys.argv) < 2:
print('Please specify a year')
else:
filename = os.path.join(basedir, '.'.join((sys.argv[1], suffix)))
time = read_var(ncf, 'time')
lat = read_var(ncf, 'lat')
lon = read_var(ncf, 'lon')
soil = read_var(ncf, 'soilw')
Simply run the script like:
# on windows-based systems
python script.py year
# on unix-based systems
./script.py year
Keeping the element's size relative to its content can also be done with display: inline-flex
and display: table
The centering can be done with..
text-align: center;
on the parent (or above, it's inherited)
display: flex;
and justify-content: center;
on the parent
position: absolute;
left: 50%;
transform: translateX(-50%);
on
the element with position: relative; (at least) on the parent.
Here's a flexbox guide from CSS Tricks
Here's an article on centering from CSS Tricks.
Keeping an element only as wide as its content..
Can use display: table;
Or inline-anything including inline-flex
as used in my snippet
example below.
Keep in mind that when centering with flexbox's justify-content: center;
when the text wraps the text will align left. So you will still need text-align: center;
if your site is responsive and you expect lines to wrap.
body {_x000D_
display: flex;_x000D_
flex-direction: column;_x000D_
height: 100vh;_x000D_
padding: 20px;_x000D_
}_x000D_
.container {_x000D_
display: flex;_x000D_
justify-content: center; /* center horizontally */_x000D_
align-items: center; /* center vertically */_x000D_
height: 50%;_x000D_
}_x000D_
.container.c1 {_x000D_
text-align: center; /* needed if the text wraps */_x000D_
/* text-align is inherited, it can be put on the parent or the target element */_x000D_
}_x000D_
.container.c2 {_x000D_
/* without text-align: center; */_x000D_
}_x000D_
.button {_x000D_
padding: 5px 10px;_x000D_
font-size: 30px;_x000D_
text-decoration: none;_x000D_
color: hsla(0, 0%, 90%, 1);_x000D_
background: linear-gradient(hsla(21, 85%, 51%, 1), hsla(21, 85%, 61%, 1));_x000D_
border-radius: 10px;_x000D_
box-shadow: 2px 2px 15px -5px hsla(0, 0%, 0%, 1);_x000D_
}_x000D_
.button:hover {_x000D_
background: linear-gradient(hsl(207.5, 84.8%, 51%), hsla(207, 84%, 62%, 1));_x000D_
transition: all 0.2s linear;_x000D_
}_x000D_
.button.b1 {_x000D_
display: inline-flex; /* element only as wide as content */_x000D_
}_x000D_
.button.b2 {_x000D_
display: table; /* element only as wide as content */_x000D_
}
_x000D_
<div class="container c1">_x000D_
<a class="button b1" href="https://stackoverflow.com/questions/27722872/">This Text Is Centered Before And After Wrap</a>_x000D_
</div>_x000D_
<div class="container c2">_x000D_
<a class="button b2" href="https://stackoverflow.com/questions/27722872/">This Text Is Centered Only Before Wrap</a>_x000D_
</div>
_x000D_
Fiddle
Following https://docs.microsoft.com/en-gb/visualstudio/ide/reference/how-to-manage-word-wrap-in-the-editor
When viewing a document: Edit / Advanced / Word Wrap (Ctrl+E, Ctrl+W)
General settings: Tools / Options / Text Editor / All Languages / Word wrap
Or search for 'word wrap' in the Quick Launch box.
If you're familiar with word wrap in Notepad++, Sublime Text, or Visual Studio Code, be aware of the following issues where Visual Studio behaves differently to other editors:
Unfortunately these bugs have been closed "lower priority". If you'd like these bugs fixed, please vote for the feature request Fix known issues with word wrap.
I had a similar issue in Mac where svn was picking mac login as user name and I was getting error as
svn: E170013: Unable to connect to a repository at URL 'https://repo:8443/svn/proj/trunk'
svn: E175013: Access to '/svn/proj/trunk' forbidden
I used the --username
along with svn command to pass the correct username which helped me.
Alternatively, you can delete ~/.subversion/auth
file, after which svn will prompt you for username.
array_splice($array, 0, 1);
The empty space char would be ' '
. If you're looking for null that would be '\0'
.
I experienced a similar issue on Ubuntu 14.04 LTS after a MySQL update.
I started getting error: "Fatal error: Can't open and lock privilege tables: Incorrect file format 'user'" in /var/log/mysql/error.log
MySQL could not start.
I resolved it by removing the following directory: /var/lib/mysql/mysql
sudo rm -rf /var/lib/mysql/mysql
This leaves your other DB related files in place, only removing the mysql related files.
After running these:
sudo apt-get remove --purge mysql-server mysql-client mysql-common
sudo apt-get autoremove
sudo apt-get autoclean
Then reinstalling mysql:
sudo apt-get install mysql-server
It worked perfectly.
What you have is correct, though you will not call it global, it is a class attribute and can be accessed via class e.g Shape.lolwut
or via an instance e.g. shape.lolwut
but be careful while setting it as it will set an instance level attribute not class attribute
class Shape(object):
lolwut = 1
shape = Shape()
print Shape.lolwut, # 1
print shape.lolwut, # 1
# setting shape.lolwut would not change class attribute lolwut
# but will create it in the instance
shape.lolwut = 2
print Shape.lolwut, # 1
print shape.lolwut, # 2
# to change class attribute access it via class
Shape.lolwut = 3
print Shape.lolwut, # 3
print shape.lolwut # 2
output:
1 1 1 2 3 2
Somebody may expect output to be 1 1 2 2 3 3
but it would be incorrect
This is what you wanna do:
var oldSrc = 'http://example.com/smith.gif';
var newSrc = 'http://example.com/johnson.gif';
$('img[src="' + oldSrc + '"]').attr('src', newSrc);
Windows OS searches the current directory and the directories listed in the PATH environment variable for executable programs. JDK's programs (such as Java compiler javac.exe and Java runtime java.exe) reside in directory "\bin" (where denotes the JDK installed directory, e.g., C:\Program Files\Java\jdk1.8.0_xx). You need to include the "\bin" directory in the PATH.
To edit the PATH environment variable in Windows XP/Vista/7/8:
Control Panel ? System ? Advanced system settings
Switch to "Advanced" tab ? Environment Variables
In "System Variables", scroll down to select "PATH" ? Edit
(( now read the following 3 times before proceeding, THERE IS NO UNDO ))
In "Variable value" field, INSERT "c:\Program Files\Java\jdk1.8.0_xx\bin" (Replace xx with the upgrade number and VERIFY that this is your JDK's binary directory!!!) IN FRONT of all the existing directories, followed by a semi-colon (;) which separates the JDK's binary directory from the rest of the existing directories. DO NOT DELETE any existing entries; otherwise, some existing applications may not run.
Variable name : PATH
Variable value : c:\Program Files\Java\jdk1.8.0_xx\bin;[existing entries...]
Login into your server using a shell program like putty.
Type in the following command on the command line
zcat DB_File_Name.sql.gz | mysql -u username -p Target_DB_Name
where
DB_File_Name.sql.gz
= full path of the sql.gz file to be imported
username
= your mysql username
Target_DB_Name
= database name where you want to import the database
When you hit enter in the command line, it will prompt for password. Enter your MySQL password.
You are done!
It's part of the exception handling. The gcc EH mechanism allows to mix various EH models, and a personality routine is invoked to determine if an exception match, what finalization to invoke, etc. This specific personality routine is for C++ exception handling (as opposed to, say, gcj/Java exception handling).
I have recently installed it from source and bellow are all the steps needed to install it from source with the mentioned instructions available.
Other answers already describe why those messages are shown. My answer gives a step-by-step on how to isnstall, which may help people struglling on the actual installation as I did.
Download it from one of their available releases, for example 0.5.2.
Extract it, go into the directory and configure it: bash ./compile.sh
.
Copy the executable to /usr/local/bin
: sudo cp ./output/bazel /usr/local/bin
Clone tensorflow: git clone https://github.com/tensorflow/tensorflow.git
Go to the cloned directory to configure it: ./configure
It will prompt you with several questions, bellow I have suggested the response to each of the questions, you can, of course, choose your own responses upon as you prefer:
Using python library path: /usr/local/lib/python2.7/dist-packages
Do you wish to build TensorFlow with MKL support? [y/N] y
MKL support will be enabled for TensorFlow
Do you wish to download MKL LIB from the web? [Y/n] Y
Please specify optimization flags to use during compilation when bazel option "--config=opt" is specified [Default is -march=native]:
Do you wish to use jemalloc as the malloc implementation? [Y/n] n
jemalloc disabled
Do you wish to build TensorFlow with Google Cloud Platform support? [y/N] N
No Google Cloud Platform support will be enabled for TensorFlow
Do you wish to build TensorFlow with Hadoop File System support? [y/N] N
No Hadoop File System support will be enabled for TensorFlow
Do you wish to build TensorFlow with the XLA just-in-time compiler (experimental)? [y/N] N
No XLA JIT support will be enabled for TensorFlow
Do you wish to build TensorFlow with VERBS support? [y/N] N
No VERBS support will be enabled for TensorFlow
Do you wish to build TensorFlow with OpenCL support? [y/N] N
No OpenCL support will be enabled for TensorFlow
Do you wish to build TensorFlow with CUDA support? [y/N] N
No CUDA support will be enabled for TensorFlow
Build pip script: bazel build -c opt --copt=-mavx --copt=-mavx2 --copt=-mfma --copt=-mfpmath=both --copt=-msse4.1 --copt=-msse4.2 -k //tensorflow/tools/pip_package:build_pip_package
Build pip package: bazel-bin/tensorflow/tools/pip_package/build_pip_package /tmp/tensorflow_pkg
Install Tensorflow pip package you just built: sudo pip install /tmp/tensorflow_pkg/tensorflow-1.2.1-cp27-cp27mu-linux_x86_64.whl
Now next time you start up Tensorflow it will not complain anymore about missing instructions.
If loading via pip install mysql-connector
and leads an error Unable to find Protobuf include directory
then this would be useful pip install mysql-connector==2.1.4
mysql-connector
is obsolete, so use pip install mysql-connector-python
. Same here
To restart a service with changes here are the steps that I performed:
docker-compose stop -t 1 worker
docker-compose build worker
docker-compose up --no-start worker
docker-compose start worker
You can change
Range("B3:B65536").Copy Destination:=Sheets("DB").Range("B" & lastrow)
to
Range("B3:B65536").Copy
Sheets("DB").Range("B" & lastrow).PasteSpecial xlPasteValues
BTW, if you have xls file (excel 2003), you would get an error if your lastrow
would be greater 3.
Try to use this code instead:
Sub Get_Data()
Dim lastrowDB As Long, lastrow As Long
Dim arr1, arr2, i As Integer
With Sheets("DB")
lastrowDB = .Cells(.Rows.Count, "A").End(xlUp).Row + 1
End With
arr1 = Array("B", "C", "D", "E", "F", "AH", "AI", "AJ", "J", "P", "AF")
arr2 = Array("B", "A", "C", "P", "D", "E", "G", "F", "H", "I", "J")
For i = LBound(arr1) To UBound(arr1)
With Sheets("Sheet1")
lastrow = Application.Max(3, .Cells(.Rows.Count, arr1(i)).End(xlUp).Row)
.Range(.Cells(3, arr1(i)), .Cells(lastrow, arr1(i))).Copy
Sheets("DB").Range(arr2(i) & lastrowDB).PasteSpecial xlPasteValues
End With
Next
Application.CutCopyMode = False
End Sub
Note, above code determines last non empty row on DB
sheet in column A
(variable lastrowDB
). If you need to find lastrow for each destination column in DB
sheet, use next modification:
For i = LBound(arr1) To UBound(arr1)
With Sheets("DB")
lastrowDB = .Cells(.Rows.Count, arr2(i)).End(xlUp).Row + 1
End With
' NEXT CODE
Next
You could also use next approach instead Copy/PasteSpecial
. Replace
.Range(.Cells(3, arr1(i)), .Cells(lastrow, arr1(i))).Copy
Sheets("DB").Range(arr2(i) & lastrowDB).PasteSpecial xlPasteValues
with
Sheets("DB").Range(arr2(i) & lastrowDB).Resize(lastrow - 2).Value = _
.Range(.Cells(3, arr1(i)), .Cells(lastrow, arr1(i))).Value
To Save your bitmap in sdcard use the following code
Store Image
private void storeImage(Bitmap image) {
File pictureFile = getOutputMediaFile();
if (pictureFile == null) {
Log.d(TAG,
"Error creating media file, check storage permissions: ");// e.getMessage());
return;
}
try {
FileOutputStream fos = new FileOutputStream(pictureFile);
image.compress(Bitmap.CompressFormat.PNG, 90, fos);
fos.close();
} catch (FileNotFoundException e) {
Log.d(TAG, "File not found: " + e.getMessage());
} catch (IOException e) {
Log.d(TAG, "Error accessing file: " + e.getMessage());
}
}
To Get the Path for Image Storage
/** Create a File for saving an image or video */
private File getOutputMediaFile(){
// To be safe, you should check that the SDCard is mounted
// using Environment.getExternalStorageState() before doing this.
File mediaStorageDir = new File(Environment.getExternalStorageDirectory()
+ "/Android/data/"
+ getApplicationContext().getPackageName()
+ "/Files");
// This location works best if you want the created images to be shared
// between applications and persist after your app has been uninstalled.
// Create the storage directory if it does not exist
if (! mediaStorageDir.exists()){
if (! mediaStorageDir.mkdirs()){
return null;
}
}
// Create a media file name
String timeStamp = new SimpleDateFormat("ddMMyyyy_HHmm").format(new Date());
File mediaFile;
String mImageName="MI_"+ timeStamp +".jpg";
mediaFile = new File(mediaStorageDir.getPath() + File.separator + mImageName);
return mediaFile;
}
EDIT From Your comments i have edited the onclick view in this the button1 and button2 functions will be executed separately.
public onClick(View v){
switch(v.getId()){
case R.id.button1:
//Your button 1 function
break;
case R.id. button2:
//Your button 2 function
break;
}
}
I believe the issue at hand is that is the statement was skipped, and you tried to use the var elsewhere, it wouldn't be declared.
Just change few snippet(use array_merge function):-
$options['inputs']=array_merge($options['inputs'], $new_input);
The accepted solution from Dallas was working for us if we use Load Balancer on the Citrix Netscaler (without WAF policy).
The download of the file doesn't work through the LB of the Netscaler when it is associated with WAF as the current scenario (Content-length not being correct) is a RFC violation and AppFW resets the connection, which doesn't happen when WAF policy is not associated.
So what was missing was:
Response.End();
See also: Trying to stream a PDF file with asp.net is producing a "damaged file"
Know your host ip address on your lan Open cmd and type ipconfig and the if xampp the default listen port would be 80 Then for instance if 10.0.0.5 is your host ip address Type 10.0.0.5:80 from your mobile's web browser Make sure that both are connected to the same LAN However the default port that webaddress tries is 80.
Should it be LIBRARY_PATH
instead of LD_LIBRARY_PATH
.
gcc checks for LIBRARY_PATH
which can be seen with -v
option
Here is a really easy way of doing it:https://github.com/JagCesar/iOS-blur
Just copy the layer of UIToolbar and you're done, AMBlurView does it for you. Okay, it's not as blurry as control center, but is's blurry enough.
Remember that iOS7 is under NDA.
\
is an escape character in Python. \t
gets interpreted as a tab. If you need \
character in a string, you have to use \\
.
Your code should be:
test_file=open('c:\\Python27\\test.txt','r')
In the below class setter and getter is applied to variable sideLength
class Triangle: {
var sideLength: Double = 0.0
init(sideLength: Double, name: String) { //initializer method
self.sideLength = sideLength
super.init(name: name)
numberOfSides = 3
}
var perimeter: Double {
get { // getter
return 3.0 * sideLength
}
set(newValue) { //setter
sideLength = newValue / 4.0
}
}
var triangle = Triangle(sideLength: 3.9, name: "a triangle")
print(triangle.perimeter) // invoking getter
triangle.perimeter = 9.9 // invoking setter
Use findIndex
as other previously written. Here's the full example:
function find(arr, predicate) {
foundIndex = arr.findIndex(predicate);
return foundIndex !== -1 ? arr[foundIndex] : null;
}
And usage is following (we want to find first element in array which has property id === 1
).
var firstElement = find(arr, e => e.id === 1);
Try this
$client = new \GuzzleHttp\Client();
$client->post(
'http://www.example.com/user/create',
array(
'form_params' => array(
'email' => '[email protected]',
'name' => 'Test user',
'password' => 'testpassword'
)
)
);
Inside testing2.php
you should print the $_POST
array which contains all the data from the post. Also, $_POST['name']
should be available. For more info check $_POST on php.net.
more simpler approach , use java 5 style for loop
Integer[][] twoDimArray = {{8, 9},{8, 10}};
for (Integer[] array: twoDimArray){
System.out.print(array[0] + " ,");
System.out.println(array[1]);
}
if you use mvvm and your itemssource is located in your vm. just call INotifyPropertyChanged for your collection property when you want to refresh.
OnPropertyChanged("YourCollectionProperty");
For a more flexible solution, use the splice()
function. It allows you to remove any item in an Array based on Index Value:
var indexToRemove = 0;
var numberToRemove = 1;
arr.splice(indexToRemove, numberToRemove);
A quick recap of the 2 approaches with speed comparison being the important part.
Determining the caller at compile-time
static void Log(object message,
[CallerMemberName] string memberName = "",
[CallerFilePath] string fileName = "",
[CallerLineNumber] int lineNumber = 0)
{
// we'll just use a simple Console write for now
Console.WriteLine("{0}({1}):{2} - {3}", fileName, lineNumber, memberName, message);
}
Determining the caller using the stack
static void Log(object message)
{
// frame 1, true for source info
StackFrame frame = new StackFrame(1, true);
var method = frame.GetMethod();
var fileName = frame.GetFileName();
var lineNumber = frame.GetFileLineNumber();
// we'll just use a simple Console write for now
Console.WriteLine("{0}({1}):{2} - {3}", fileName, lineNumber, method.Name, message);
}
Comparison of the 2 approaches
Time for 1,000,000 iterations with Attributes: 196 ms
Time for 1,000,000 iterations with StackTrace: 5096 ms
So you see, using the attributes is much, much faster! Nearly 25x faster in fact.
I saw a lot of solutions but all was wrong or uncomplet. You can solve all problems with 5 lines in viewDidLoad and autolayout. This for objetive C:
_tableView.delegate = self;
_tableView.dataSource = self;
self.tableView.estimatedRowHeight = 80;//the estimatedRowHeight but if is more this autoincremented with autolayout
self.tableView.rowHeight = UITableViewAutomaticDimension;
[self.tableView setNeedsLayout];
[self.tableView layoutIfNeeded];
self.tableView.contentInset = UIEdgeInsetsMake(20, 0, 0, 0) ;
For swift 2.0:
self.tableView.estimatedRowHeight = 80
self.tableView.rowHeight = UITableViewAutomaticDimension
self.tableView.setNeedsLayout()
self.tableView.layoutIfNeeded()
self.tableView.contentInset = UIEdgeInsetsMake(20, 0, 0, 0)
Now create your cell with xib or into tableview in your Storyboard With this you no need implement nothing more or override. (Don forget number os lines 0) and the bottom label (constrain) downgrade "Content Hugging Priority -- Vertical to 250"
You can donwload the code in the next url: https://github.com/jposes22/exampleTableCellCustomHeight
There was a previous question today (no answers) that gave a good example of this functionality. You can check the relevant source code for specifics (search for "toolbar"), but basically they use a combination of webdestroya's solution and a bit of JavaScript:
I'd recommend checking the aforementioned source code though, because they do handle some "gotchas" that you might not immediately think of, such as adjusting scroll position when clicking on anchor links.
There is no such method as java.util.Random.getRandomDigits
.
To get a random number use nextInt:
return random.nextInt(10 ** num)
Also you should create the random object once when your application starts:
Random random = new Random()
You should not create a new random object every time you want a new random number. Doing this destroys the randomness.
I think the cleanest way is this!
<?php
$lang = substr($_SERVER['HTTP_ACCEPT_LANGUAGE'], 0, 2);
$supportedLanguages=['en','fr','gr'];
if(!in_array($lang,$supportedLanguages)){
$lang='en';
}
require("index_".$lang.".php");
Change the parameter type from primitive to Object and put a null check in the setter. See example below
public void setPhoneNumber(Long phoneNumber) {
if (phoneNumber != null)
this.phoneNumber = phoneNumber;
else
this.extension = 0l;
}
The key checks for FAST REFRESH includes the following:
1) An Oracle materialized view log must be present for each base table.
2) The RowIDs of all the base tables must appear in the SELECT list of the MVIEW query definition.
3) If there are outer joins, unique constraints must be placed on the join columns of the inner table.
No 3 is easy to miss and worth highlighting here
Rename the id of your ListView like this,
<ListView android:id="@android:id/list"
android:layout_width="fill_parent"
android:layout_height="fill_parent"/>
Since you are using ListActivity
your xml file must specify the keyword android while mentioning to a ID.
If you need a custom ListView
then instead of Extending a ListActivity
, you have to simply extend an Activity
and should have the same id without the keyword android.
You can't replace ?
in your query with an arbitrary number of values. Each ?
is a placeholder for a single value only. To support an arbitrary number of values, you'll have to dynamically build a string containing ?, ?, ?, ... , ?
with the number of question marks being the same as the number of values you want in your in
clause.
Yet another option:
Useful for instance when moving between a thrust::device_vector
and a thrust::host_vector
, where you cannot use the constructor.
std::vector<T> newVector;
newVector.reserve(1000);
std::copy_n(&vec[100000], 1000, std::back_inserter(newVector));
Should also be complexity O(N)
You could combine this with top anwer code
vector<T>::const_iterator first = myVec.begin() + 100000;
vector<T>::const_iterator last = myVec.begin() + 101000;
std::copy(first, last, std::back_inserter(newVector));
After reading about the extension_dir = "ext" i added the line to php.ini but didnt work, then started to look apache error log and saw the PHP was in fact unable to find the dll's in the specified directory "ext". I commented the extension_dir line, restarted Apache and looked the error log again, saw that PHP was now looking the dll's in C:/PHP/ext (by default i guess), but since im using other folders, that's not the correct path, so i uncommented the extension_dir line and wrote this:
extension_dir = "C:/Apache24/PHP/ext"
In my configuration that is the correct path to dll's.
and of course, uncommented:
extension=php_mbstring.dll
extension=php_mysql.dll
extension=php_mysqli.dll
Restarted the Apache server and internet browser and now phpMyAdmin works with my mySQL login.
So, dll's incorrect path and dll's needed commented in php.ini were the problem.
Remember to restart Apache and internet browser after editing config files.
System spec: Windows 7 HB 64bit httpd-2.4.4-win32-ssl_0.9.8.zip php-5.4.16-Win32-VC9-x86.zip phpMyAdmin-4.0.4.1-all-languages.zip mysql-installer-community-5.6.11.0.msi
Hope this help. Thx for your comments too.
Make sure that the selected DB is the one where the table is. I was running the Script on Master
. In my case, I had to switch to hr_db
.
Rookie mistake but, could help someone.
I want columns One and Two to shrink/grow to fit rather than being fixed.
Have you tried: flex-basis: auto
or this:
flex: 1 1 auto
, which is short for:
flex-grow: 1
(grow proportionally)flex-shrink: 1
(shrink proportionally)flex-basis: auto
(initial size based on content size)or this:
main > section:first-child {
flex: 1 1 auto;
overflow-y: auto;
}
main > section:nth-child(2) {
flex: 1 1 auto;
overflow-y: auto;
}
main > section:last-child {
flex: 20 1 auto;
display: flex;
flex-direction: column;
}
Related:
var Klass = function Klass() {
var thus = this;
var somePublicVariable = x
, somePublicVariable2 = x
;
var somePrivateVariable = x
, somePrivateVariable2 = x
;
var privateMethod = (function p() {...}).bind(this);
function publicMethod() {...}
// export precepts
this.var1 = somePublicVariable;
this.method = publicMethod;
return this;
};
First, you may change your preference of adding methods to the instance instead of the constructor's prototype
object. I almost always declare methods inside of the constructor because I use Constructor Hijacking very often for purposes regarding Inheritance & Decorators.
Here's how I decide where which declarations are writ:
this
)var
declarations take precedence over function
declarations{}
and []
)public
declarations take precedence over private
declarationsFunction.prototype.bind
over thus
, self
, vm
, etc
this
from within the Lexical Scope of the Closure Space.Here's why these help:
Constructor Hijackingvar Super = function Super() {
...
this.inherited = true;
...
};
var Klass = function Klass() {
...
// export precepts
Super.apply(this); // extends this with property `inherited`
...
};
Model Design
var Model = function Model(options) {
var options = options || {};
this.id = options.id || this.id || -1;
this.string = options.string || this.string || "";
// ...
return this;
};
var model = new Model({...});
var updated = Model.call(model, { string: 'modified' });
(model === updated === true); // > true
Design Patterns
var Singleton = new (function Singleton() {
var INSTANCE = null;
return function Klass() {
...
// export precepts
...
if (!INSTANCE) INSTANCE = this;
return INSTANCE;
};
})();
var a = new Singleton();
var b = new Singleton();
(a === b === true); // > true
As you can see, I really have no need for thus
since I prefer Function.prototype.bind
(or .call
or .apply
) over thus
. In our Singleton
class, we don't even name it thus
because INSTANCE
conveys more information. For Model
, we return this
so that we can invoke the Constructor using .call
to return the instance we passed into it. Redundantly, we assigned it to the variable updated
, though it is useful in other scenarios.
Alongside, I prefer constructing object-literals using the new
keyword over {brackets}:
var klass = new (function Klass(Base) {
...
// export precepts
Base.apply(this); //
this.override = x;
...
})(Super);
Not Preferred
var klass = Super.apply({
override: x
});
As you can see, the latter has no ability to override its Superclass's "override" property.
If I do add methods to the Class's prototype
object, I prefer an object literal -- with or without using the new
keyword:
Klass.prototype = new Super();
// OR
Klass.prototype = new (function Base() {
...
// export precepts
Base.apply(this);
...
})(Super);
// OR
Klass.prototype = Super.apply({...});
// OR
Klass.prototype = {
method: function m() {...}
};
Not Preferred
Klass.prototype.method = function m() {...};
You can use both. The css style will override the size
attribute in browsers that support CSS and make the field the correct width, and for those that don't, it will fall back to the specified number of characters.
Edit: I should have mentioned that the size
attribute isn't a precise method of sizing: according to the HTML specification, it should refer to the number of characters of the current font the input will be able to display at once.
However, unless the font specified is a fixed-width/monospace font, this is not a guarantee that the specified number of characters will actually be visible; in most fonts, different characters will be different widths. This question has some good answers relating to this issue.
The snippet below demonstrates both approaches.
@font-face {_x000D_
font-family: 'Diplomata';_x000D_
font-style: normal;_x000D_
font-weight: 400;_x000D_
src: local('Diplomata'), local('Diplomata-Regular'), url(https://fonts.gstatic.com/s/diplomata/v8/8UgOK_RUxkBbV-q561I6kFtXRa8TVwTICgirnJhmVJw.woff2) format('woff2');_x000D_
unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02C6, U+02DA, U+02DC, U+2000-206F, U+2074, U+20AC, U+2212, U+2215;_x000D_
}_x000D_
@font-face {_x000D_
font-family: 'Open Sans Condensed';_x000D_
font-style: normal;_x000D_
font-weight: 300;_x000D_
src: local('Open Sans Condensed Light'), local('OpenSansCondensed-Light'), url(https://fonts.gstatic.com/s/opensanscondensed/v11/gk5FxslNkTTHtojXrkp-xBEur64QvLD-0IbiAdTUNXE.woff2) format('woff2');_x000D_
unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02C6, U+02DA, U+02DC, U+2000-206F, U+2074, U+20AC, U+2212, U+2215;_x000D_
}_x000D_
p {_x000D_
margin: 0 0 10px 0;_x000D_
}_x000D_
input {_x000D_
font-size: 20px;_x000D_
}_x000D_
.narrow-font {_x000D_
font-family: 'Open Sans Condensed', sans-serif;_x000D_
}_x000D_
.wide-font {_x000D_
font-family: 'Diplomata', cursive;_x000D_
}_x000D_
.set-width {_x000D_
width: 220px;_x000D_
}
_x000D_
<p>_x000D_
<input type="text" size="10" class="narrow-font" value="0123456789" />_x000D_
</p>_x000D_
<p>_x000D_
<input type="text" size="10" class="wide-font" value="0123456789" />_x000D_
</p>_x000D_
<p>_x000D_
<input type="text" size="10" class="narrow-font set-width" value="0123456789" />_x000D_
</p>_x000D_
<p>_x000D_
<input type="text" size="10" class="wide-font set-width" value="0123456789" />_x000D_
</p>
_x000D_
As of version 5.4, PHP supports traits. This is not exactly what you are looking for, but a simplistic trait based approach would be:
trait StudentTrait {
protected $id;
protected $name;
final public function setId($id) {
$this->id = $id;
return $this;
}
final public function getId() { return $this->id; }
final public function setName($name) {
$this->name = $name;
return $this;
}
final public function getName() { return $this->name; }
}
class Student1 {
use StudentTrait;
final public function __construct($id) { $this->setId($id); }
}
class Student2 {
use StudentTrait;
final public function __construct($id, $name) { $this->setId($id)->setName($name); }
}
We end up with two classes, one for each constructor, which is a bit counter-productive. To maintain some sanity, I'll throw in a factory:
class StudentFactory {
static public function getStudent($id, $name = null) {
return
is_null($name)
? new Student1($id)
: new Student2($id, $name)
}
}
So, it all comes down to this:
$student1 = StudentFactory::getStudent(1);
$student2 = StudentFactory::getStudent(1, "yannis");
It's a horribly verbose approach, but it can be extremely convenient.
If you once come into the situation, that checking "get-task-allow" seems to be required in order to deploy your debug (!) build to your phone, check this:
a) Check the build setting. There should be no entry in "Code Signing Entitlements" for Debug b) Remove Entitlements.plist temporarily and build your debug version. If it complains about a missing Entitlements.plist, then you probably have the same situation, I had to fight today. c) Build again with Entitlements.plist and enable "get-task-allow". If it works now, you probably have the same problem:
After messing around with new profiles I couldn't deploy my Debug build to the phone. AdHoc was fine. I checked a) - empty.. Hmm. I checked b) - complains. c) - worked...
After all I examined project.pbjproj in an editor and - although the GUI did claim, that there was no entry for "Code Signing Entitlements" in fact there was one in the Debug section. I emptied it and was done.
My automatically generated .gitignore
file contained /.vs
instead of .vs/
. Fixing this typo fixed the problem!
If you want your script to return values, just do return [1,2,3]
from a function wrapping your code but then you'd have to import your script from another script to even have any use for that information:
(again, this would have to be run by a separate Python script and be imported in order to even do any good):
import ...
def main():
# calculate stuff
return [1,2,3]
(This is generally just good for when you want to indicate to a governor what went wrong or simply the number of bugs/rows counted or w/e. Normally 0 is a good exit and >=1 is a bad exit but you could inter-prate them in any way you want to get data out of it)
import sys
# calculate and stuff
sys.exit(100)
And exit with a specific exit code depending on what you want that to tell your governor. I used exit codes when running script by a scheduling and monitoring environment to indicate what has happened.
(os._exit(100)
also works, and is a bit more forceful)
If not you'd have to use stdout to communicate with the outside world (like you've described). But that's generally a bad idea unless it's a parser executing your script and can catch whatever it is you're reporting to.
import sys
# calculate stuff
sys.stdout.write('Bugs: 5|Other: 10\n')
sys.stdout.flush()
sys.exit(0)
Are you running your script in a controlled scheduling environment then exit codes are the best way to go.
There's also the option to simply write information to a file, and store the result there.
# calculate
with open('finish.txt', 'wb') as fh:
fh.write(str(5)+'\n')
And pick up the value/result from there. You could even do it in a CSV format for others to read simplistically.
If none of the above work, you can also use network sockets locally *(unix sockets is a great way on nix systems). These are a bit more intricate and deserve their own post/answer. But editing to add it here as it's a good option to communicate between processes. Especially if they should run multiple tasks and return values.
We've tried a number of obfuscators. None of them work on a large client/server app that uses remoting. Problem is that client and server share some dlls, and we haven't found any obfuscator that can handle it.
We've tried DotFuscator Pro, SmartAssembly, XenoCode, Salamander, and several small time apps whose names escape me.
Frankly, I'm convinced obfuscation is a big hack.
Even the problems it addresses is not entirely a real problem. The only thing you really need to protect is connection strings, activation codes, security-sensitive things like that. This nonsense that another company is going to reverse-engineer your whole codebase and create a competing product from it is something from a paranoid manager's nightmare, not reality.
You can use
SELECT AUTO_INCREMENT
FROM information_schema.tables
WHERE table_name = 'table_name'
AND table_schema = DATABASE( ) ;
or if you do not wish to use information_schema you can use this
SHOW TABLE STATUS LIKE 'table_name'
better solution is to use pool - ill handle this for you.
const pool = mysql.createPool({_x000D_
host: 'localhost',_x000D_
user: '--',_x000D_
database: '---',_x000D_
password: '----'_x000D_
});_x000D_
_x000D_
// ... later_x000D_
pool.query('select 1 + 1', (err, rows) => { /* */ });
_x000D_
The .zip file provided by the authors is not a valid R package, and they do state that the source is for "direct use" in R (by which I assume they mean it's necessary to load the included functions manually). The non-zero exit status
simply indicates that there was an error during the installation of the "package".
You can extract the archive manually and then load the functions therein with, e.g., source('bivpois.table.R')
, or you can download the .RData file they provide and load that into the workspace with load('.RData')
. This does not install the functions as part of a package; rather, it loads the functions into your global environment, making them temporarily available.
You can download, extract, and load the .RData from R as follows:
download.file('http://stat-athens.aueb.gr/~jbn/papers/files/14/14_bivpois_RDATA.zip',
f <- tempfile())
unzip(f, exdir=tempdir())
load(file.path(tempdir(), '.RData'))
If you want the .RData file to be available in the current working directory, to be loaded in the future, you could use the following instead:
download.file('http://stat-athens.aueb.gr/~jbn/papers/files/14/14_bivpois_RDATA.zip',
f <- tempfile())
unzip(f, exdir=tempdir())
file.copy(file.path(tempdir(), '.RData'), 'bivpois.RData')
# the above copies the .RData file to a file called bivpois.RData in your current
# working directory.
load('bivpois.RData')
In future R sessions, you can just call load('bivpois.RData')
.
Another way to look at this: Used are 64 bits to represent numbers. As consequence there is no way more than 2**64 = 18,446,744,073,709,551,616 different numbers can be precisely represented.
However, Math says there are already infinitely many decimals between 0 and 1. IEE 754 defines an encoding to use these 64 bits efficiently for a much larger number space plus NaN and +/- Infinity, so there are gaps between accurately represented numbers filled with numbers only approximated.
Unfortunately 0.3 sits in a gap.
Unfortunately, the meaning of things like ( and \( are swapped between Emacs style regular expressions and most other styles. So if you try to escape these you may be doing the opposite of what you want.
So you really have to know what style you are trying to quote.
I have just modified following line in users
and password_resets
migration file.
Old : $table->string('email')->unique();
New : $table->string('email', 128)->unique();
I finally got it:
ObjectMapper objectMapper = new ObjectMapper();
TypeFactory typeFactory = objectMapper.getTypeFactory();
List<SomeClass> someClassList = objectMapper.readValue(jsonString, typeFactory.constructCollectionType(List.class, SomeClass.class));
If the primary key happens to be an auto_increment value, you have to remove the auto increment, then drop the primary key then re-add the auto-increment
ALTER TABLE `xx`
MODIFY `auto_increment_field` INT,
DROP PRIMARY KEY,
ADD PRIMARY KEY (new_primary_key);
then add back the auto increment
ALTER TABLE `xx` ADD INDEX `auto_increment_field` (auto_increment_field),
MODIFY `auto_increment_field` int auto_increment;
then set auto increment back to previous value
ALTER TABLE `xx` AUTO_INCREMENT = 5;
Your C/C++ program always has a main function. It looks like that:
int main(int argc, char**argv) {
...
}
Here argc is a number of command line arguments, that have been passed to your program, and argv is an array of strings with these arguments. So command line is separated in-to arguments by the caller process (this is not a single line, like in windows).
Now you need to sort them out:
This is how I solved the issue.
Copy and run these commands
ng --version
npm install --save-dev @angular/cli@latest
ng --version
By using the Nuget Package Manager UI as mentioned above it helps to uninstall the nuget package first. I always have problems when going back on a nuget package version if I don't uninstall first. Some references are not cleaned properly. So I suggest the following workflow when installing an old nuget package through the Nuget Package Manager:
Good Luck :)
Newb move on my part, but I had installed just the JRE instead of JDK. Installed JDK and my problem went immediately away.
Sometimes you may wish to check on the timestamp for when the repo was updated, for getting this handy info you can use the svn -v (verbose) option as in
svn list -v svn://123.123.123.123/svn/repo/path
In my case I had in one report many different datasets to DB and Analysis Services Cube. Looks like that datasets blocked each other and generated such error. For me helped option "Use single transaction when processing the queries" in the CUBE datasource properties
In addition to Jim's answer (sorry not enough rep points to make a comment), just wanted to point out that the arguments specified in PyCharm do not have special characters escaped, unlike what you would do on the command line. So, whereas on the command line you'd do:
python mediadb.py /media/paul/New\ Volume/Users/paul/Documents/spinmaster/\*.png
the PyCharm parameter would be:
"/media/paul/New Volume/Users/paul/Documents/spinmaster/*.png"
xargs -a your_file | sed 's/ /,/g'
This is a shorter way.
On Windows timer returns hundredths of a second... Most people just use seconds because on the Macintosh platform timer returns whole numbers.
If using a complex object (or even a simple one) and you can use es6, Array.prototype.findIndex
is a good one. For the OP's array, they could do,
const index = items.findIndex(x => x === 3452)
items[index] = 1010
For more complex objects, this really shines. For example,
const index =
items.findIndex(
x => x.jerseyNumber === 9 && x.school === 'Ohio State'
)
items[index].lastName = 'Utah'
items[index].firstName = 'Johnny'
The double space generally works well. However, sometimes the lacking newline in the PDF still occurs to me when using four pound sign sub titles #### in Jupyter Notebook, as the next paragraph is put into the subtitle as a single paragraph. No amount of double spaces and returns fixed this, until I created a notebook copy 'v. PDF' and started using a single backslash '\' which also indents the next paragraph nicely:
#### 1.1 My Subtitle \
1.1 My Subtitle
Next paragraph text.
An alternative to this, is to upgrade the level of your four # titles to three # titles, etc. up the title chain, which will remove the next paragraph indent and format the indent of the title itself (#### My Subtitle ---> ### My Subtitle).
### My Subtitle
1.1 My Subtitle
Next paragraph text.
I prefer using function pointers over gigantic switch
statements, but in contrast to qrdl's answer I normally don't use explicit return codes or transition tables.
Also, in most cases you'll want a mechanism to pass along additional data. Here's an example state machine:
#include <stdio.h>
struct state;
typedef void state_fn(struct state *);
struct state
{
state_fn * next;
int i; // data
};
state_fn foo, bar;
void foo(struct state * state)
{
printf("%s %i\n", __func__, ++state->i);
state->next = bar;
}
void bar(struct state * state)
{
printf("%s %i\n", __func__, ++state->i);
state->next = state->i < 10 ? foo : 0;
}
int main(void)
{
struct state state = { foo, 0 };
while(state.next) state.next(&state);
}
IntelliJ sometimes gets confused all by itself, even without the external changes Korgen described (though that is a good way to consistently reproduce it).
Click File -> Synchronize, and IntelliJ should see that everything is okay again.
If that doesn't work, IntelliJ's caches might be corrupt (this used to happen a lot more often than it does now); in that case, regenerate them by
Clicking File -> Invalidate Caches and restarting the IDE
(though loading the project will take a while while the caches are recreated).
From Wikipedia's Virtual function ...
In object-oriented programming, in languages such as C++, and Object Pascal, a virtual function or virtual method is an inheritable and overridable function or method for which dynamic dispatch is facilitated. This concept is an important part of the (runtime) polymorphism portion of object-oriented programming (OOP). In short, a virtual function defines a target function to be executed, but the target might not be known at compile time.
Unlike a non-virtual function, when a virtual function is overridden the most-derived version is used at all levels of the class hierarchy, rather than just the level at which it was created. Therefore if one method of the base class calls a virtual method, the version defined in the derived class will be used instead of the version defined in the base class.
This is in contrast to non-virtual functions, which can still be overridden in a derived class, but the "new" version will only be used by the derived class and below, but will not change the functionality of the base class at all.
whereas..
A pure virtual function or pure virtual method is a virtual function that is required to be implemented by a derived class if the derived class is not abstract.
When a pure virtual method exists, the class is "abstract" and can not be instantiated on its own. Instead, a derived class that implements the pure-virtual method(s) must be used. A pure-virtual isn't defined in the base-class at all, so a derived class must define it, or that derived class is also abstract, and can not be instantiated. Only a class that has no abstract methods can be instantiated.
A virtual provides a way to override the functionality of the base class, and a pure-virtual requires it.
Official document of Crypto++ AES is a good start. And from my archive, a basic implementation of AES is as follows:
Please refer here with more explanation, I recommend you first understand the algorithm and then try to understand each line step by step.
#include <iostream>
#include <iomanip>
#include "modes.h"
#include "aes.h"
#include "filters.h"
int main(int argc, char* argv[]) {
//Key and IV setup
//AES encryption uses a secret key of a variable length (128-bit, 196-bit or 256-
//bit). This key is secretly exchanged between two parties before communication
//begins. DEFAULT_KEYLENGTH= 16 bytes
CryptoPP::byte key[ CryptoPP::AES::DEFAULT_KEYLENGTH ], iv[ CryptoPP::AES::BLOCKSIZE ];
memset( key, 0x00, CryptoPP::AES::DEFAULT_KEYLENGTH );
memset( iv, 0x00, CryptoPP::AES::BLOCKSIZE );
//
// String and Sink setup
//
std::string plaintext = "Now is the time for all good men to come to the aide...";
std::string ciphertext;
std::string decryptedtext;
//
// Dump Plain Text
//
std::cout << "Plain Text (" << plaintext.size() << " bytes)" << std::endl;
std::cout << plaintext;
std::cout << std::endl << std::endl;
//
// Create Cipher Text
//
CryptoPP::AES::Encryption aesEncryption(key, CryptoPP::AES::DEFAULT_KEYLENGTH);
CryptoPP::CBC_Mode_ExternalCipher::Encryption cbcEncryption( aesEncryption, iv );
CryptoPP::StreamTransformationFilter stfEncryptor(cbcEncryption, new CryptoPP::StringSink( ciphertext ) );
stfEncryptor.Put( reinterpret_cast<const unsigned char*>( plaintext.c_str() ), plaintext.length() );
stfEncryptor.MessageEnd();
//
// Dump Cipher Text
//
std::cout << "Cipher Text (" << ciphertext.size() << " bytes)" << std::endl;
for( int i = 0; i < ciphertext.size(); i++ ) {
std::cout << "0x" << std::hex << (0xFF & static_cast<CryptoPP::byte>(ciphertext[i])) << " ";
}
std::cout << std::endl << std::endl;
//
// Decrypt
//
CryptoPP::AES::Decryption aesDecryption(key, CryptoPP::AES::DEFAULT_KEYLENGTH);
CryptoPP::CBC_Mode_ExternalCipher::Decryption cbcDecryption( aesDecryption, iv );
CryptoPP::StreamTransformationFilter stfDecryptor(cbcDecryption, new CryptoPP::StringSink( decryptedtext ) );
stfDecryptor.Put( reinterpret_cast<const unsigned char*>( ciphertext.c_str() ), ciphertext.size() );
stfDecryptor.MessageEnd();
//
// Dump Decrypted Text
//
std::cout << "Decrypted Text: " << std::endl;
std::cout << decryptedtext;
std::cout << std::endl << std::endl;
return 0;
}
For installation details :
sudo apt-get install libcrypto++-dev libcrypto++-doc libcrypto++-utils
Old-fashioned solution with appropriately named variables. This gives the code some spirit.
#include <cstdio>
int _(char*__){int ___=0;while(*__)___='_'==*__++?___+1:___;return ___;}int main(){char*__="_la_blba_bla__bla___";printf("The string \"%s\" contains %d _ characters\n",__,_(__));}
Edit: about 8 years later, looking at this answer I'm ashamed I did this (even though I justified it to myself as a snarky poke at a low-effort question). This is toxic and not OK. I'm not removing the post; I'm adding this apology to help shifting the atmosphere on StackOverflow. So OP: I apologize and I hope you got your homework right despite my trolling and that answers like mine did not discourage you from participating on the site.
Annotations can be applied to declarations: declarations of classes, fields, methods, and other program elements. When used on a declaration, each annotation often appears, by convention, on its own line.
Java SE 8 Update: annotations can also be applied to the use of types. Here are some examples:
Class instance creation expression:
new @Interned MyObject();
Type cast:
myString = (@NonNull String) str;
implements clause:
class UnmodifiableList implements @Readonly List<@Readonly T> { ... }
Thrown exception declaration:
void monitorTemperature() throws @Critical TemperatureException { ... }
Add a reference to Microsoft.JScript
in your application in your web.config
as below :
<configuration>
<system.web>
<compilation debug="true" targetFramework="4.5">
<assemblies>
<add assembly="Microsoft.JScript, Version=10.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/>
</assemblies>
</compilation>
<httpRuntime targetFramework="4.5"/>
</system.web>
<appSettings>
<add key="ValidationSettings:UnobtrusiveValidationMode" value="none"/>
</appSettings>
</configuration>
Run it like this:
java -jar HelloWorld.jar
Use nested dictionaries. Take a look:
INI File: example.ini
[Section]
Key = Value
Code:
class IniOpen:
def __init__(self, file):
self.parse = {}
self.file = file
self.open = open(file, "r")
self.f_read = self.open.read()
split_content = self.f_read.split("\n")
section = ""
pairs = ""
for i in range(len(split_content)):
if split_content[i].find("[") != -1:
section = split_content[i]
section = string_between(section, "[", "]") # define your own function
self.parse.update({section: {}})
elif split_content[i].find("[") == -1 and split_content[i].find("="):
pairs = split_content[i]
split_pairs = pairs.split("=")
key = split_pairs[0].trim()
value = split_pairs[1].trim()
self.parse[section].update({key: value})
def read(self, section, key):
try:
return self.parse[section][key]
except KeyError:
return "Sepcified Key Not Found!"
def write(self, section, key, value):
if self.parse.get(section) is None:
self.parse.update({section: {}})
elif self.parse.get(section) is not None:
if self.parse[section].get(key) is None:
self.parse[section].update({key: value})
elif self.parse[section].get(key) is not None:
return "Content Already Exists"
Apply code like so:
ini_file = IniOpen("example.ini")
print(ini_file.parse) # prints the entire nested dictionary
print(ini_file.read("Section", "Key") # >> Returns Value
ini_file.write("NewSection", "NewKey", "New Value"
const (
chars = "0123456789_abcdefghijkl-mnopqrstuvwxyz" //ABCDEFGHIJKLMNOPQRSTUVWXYZ
charsLen = len(chars)
mask = 1<<6 - 1
)
var rng = rand.NewSource(time.Now().UnixNano())
// RandStr ????????????
func RandStr(ln int) string {
/* chars 38???
* rng.Int63() ????64bit????,??????6bit(2^6=64) ????10?
*/
buf := make([]byte, ln)
for idx, cache, remain := ln-1, rng.Int63(), 10; idx >= 0; {
if remain == 0 {
cache, remain = rng.Int63(), 10
}
buf[idx] = chars[int(cache&mask)%charsLen]
cache >>= 6
remain--
idx--
}
return *(*string)(unsafe.Pointer(&buf))
}
BenchmarkRandStr16-8 20000000 68.1 ns/op 16 B/op 1 allocs/op
You can use reliable library GSON
private static final Type DATA_TYPE_JSON =
new TypeToken<JSONObject>() {}.getType();
JSONObject orderJSON = new JSONObject();
orderJSON.put("noOfLayers", "2");
orderJSON.put("baseMaterial", "mat");
System.out.println("JSON == "+orderJSON.toString());
String dataAsJson = new Gson().toJson(orderJSON, DATA_TYPE_JSON);
System.out.println("Value of dataAsJson == "+dataAsJson.toString());
String data = new Gson().toJson(dataAsJson);
System.out.println("Value of jsonString == "+data.toString());
Here's a way you can do it asynchronously and manage things like you would normally. Everything is still shared. You get a reference to the object that you want updated. Whenever you update that in your service, it gets updated globally without having to watch or return a promise. This is really nice because you can update the underlying object from within the service without ever having to rebind. Using Angular the way it's meant to be used. I think it's probably a bad idea to make $http.get/post synchronous. You'll get a noticeable delay in the script.
app.factory('AssessmentSettingsService', ['$http', function($http) {
//assessment is what I want to keep updating
var settings = { assessment: null };
return {
getSettings: function () {
//return settings so I can keep updating assessment and the
//reference to settings will stay in tact
return settings;
},
updateAssessment: function () {
$http.get('/assessment/api/get/' + scan.assessmentId).success(function(response) {
//I don't have to return a thing. I just set the object.
settings.assessment = response;
});
}
};
}]);
...
controller: ['$scope', '$http', 'AssessmentSettingsService', function ($scope, as) {
$scope.settings = as.getSettings();
//Look. I can even update after I've already grabbed the object
as.updateAssessment();
And somewhere in a view:
<h1>{{settings.assessment.title}}</h1>
<script type="text/javascript" language="JavaScript">
var cX = 0;
var cY = 0;
var rX = 0;
var rY = 0;
function UpdateCursorPosition(e) {
cX = e.pageX;
cY = e.pageY;
}
function UpdateCursorPositionDocAll(e) {
cX = event.clientX;
cY = event.clientY;
}
if (document.all) {
document.onmousemove = UpdateCursorPositionDocAll;
} else {
document.onmousemove = UpdateCursorPosition;
}
function AssignPosition(d) {
if (self.pageYOffset) {
rX = self.pageXOffset;
rY = self.pageYOffset;
} else if (document.documentElement && document.documentElement.scrollTop) {
rX = document.documentElement.scrollLeft;
rY = document.documentElement.scrollTop;
} else if (document.body) {
rX = document.body.scrollLeft;
rY = document.body.scrollTop;
}
if (document.all) {
cX += rX;
cY += rY;
}
d.style.left = (cX + 10) + "px";
d.style.top = (cY + 10) + "px";
}
function HideContent(d) {
if (d.length < 1) {
return;
}
document.getElementById(d).style.display = "none";
}
function ShowContent(d) {
if (d.length < 1) {
return;
}
var dd = document.getElementById(d);
AssignPosition(dd);
dd.style.display = "block";
}
function ReverseContentDisplay(d) {
if (d.length < 1) {
return;
}
var dd = document.getElementById(d);
AssignPosition(dd);
if (dd.style.display == "none") {
dd.style.display = "block";
} else {
dd.style.display = "none";
}
}
//-->
</script>
<a onmouseover="ShowContent('uniquename3'); return true;" onmouseout="HideContent('uniquename3'); return true;" href="javascript:ShowContent('uniquename3')">
[show on mouseover, hide on mouseout]
</a>
<div id="uniquename3" style="display:none;
position:absolute;
border-style: solid;
background-color: white;
padding: 5px;">
Content goes here.
</div>
Using python webdriver right click operation
from selenium import webdriver
from selenium.webdriver import ActionChains
import time
driver = webdriver.Chrome()
driver.get("https://swisnl.github.io/jQuery-contextMenu/demo.html")
button=driver.find_element_by_xpath("//body[@class='wy-body-for-nav']")
action=ActionChains(driver)
action.context_click(button).perform()
You are looking for the insert
function, found in the table
section of the main library.
foo = {}
table.insert(foo, "bar")
table.insert(foo, "baz")
Other answers have shown you how to use JUnit to set up test classes. JUnit is not the only Java test framework. Concentrating on the technical details of using a framework however detracts from the most important concepts that should be guiding your actions, so I will talk about those.
Testing (of all kinds of all kinds of things) compares the actual behaviour of something (The System Under Test, SUT) with its expected behaviour.
Automated testing can be done using a computer program. Because that comparison is being done by an inflexible and unintelligent computer program, the expected behaviour must be precisely and unambiguously known.
What a program or part of a program (a class or method) is expected to do is its specification. Testing software therefore requires that you have a specification for the SUT. This might be an explicit description, or an implicit specification in your head of what is expected.
Automated unit testing therefore requires a precise and unambiguous specification of the class or method you are testing.
But you needed that specification when you set out to write that code. So part of what testing is about actually begins before you write even one line of the SUT. The testing technique of Test Driven Development (TDD) takes that idea to an extreme, and has you create the unit testing code before you write the code to be tested.
Unit testing frameworks test your SUT using assertions. An assertion is a logical expression (an expression with a boolean
result type; a predicate) that must be true
if the SUT is behaving correctly. The specification must therefore be expressed (or re-expressed) as assertions.
A useful technique for expressing a specification as assertions is programming by contract. These specifications are in terms of postconditions. A postcondition is an assertion about the publicly visible state of the SUT after return from a method or a constructor. Some methods have postconditions
that are invariants, which are predicates that are true before and after execution of the method. A class can also be said to have invariants, which are postconditions of every constructor and method of the class, and hence should always be true. Postconditions (And invariants) are expressed only in terms of publicity visible state: public
and protected
fields, the values returned by returned by public
and protected
methods (such as getters), and the publicly visible state of objects passed (by reference) to methods.
Many beginners post questions here asking how they can test some code, presenting the code but without stating the specification for that code. As this discussion shows, it is impossible for anyone to give a good answer to such a question, because at best potential answereres must guess the specification, and might do so incorrectly. The asker of the question evidently does not understand the importance of a specification, and is thus a novice who needs to understand the fundamentals I've described here before trying to write some test code.
let the table name be people
select O.* -- > O for oldest table
from people O , people T
where O.grp = T.grp and
O.Age =
(select max(T.age) from people T where O.grp = T.grp
group by T.grp)
group by O.grp;
Restart eclipse.
It worked for me several times.
There are differences and constraints in options offered by @Steve C and @ashosborne1. They must be specified, I believe.
When can we can use: File resourcesDirectory = new File("src/test/resources");
?
IntelliJ IDEA
only, but I think all IDEs work like this. And this configuration that must be done manually, is not good at all. Working with several tests existing in different maven projects, but imported into one big “IDE” project, force us to remember this and don’t allow to relax and get pleasure from your work.Solution offered by @ashosborne1 (personally I prefer this one) requires 2 additional requirements that must be done before you run tests. Here is a list of steps to use this solution:
Create a test folder (“teva”) and file (“readme”) inside of “src/test/resources/”:
src/test/resources/teva/readme
File must be created in the test folder, otherwise, it will not work. Maven ignores empty folders.
At least once build project via mvn clean install
. It will run tests also. It may be enough to run only your test class/method via maven without building a whole project. As a result your test resources will be copied into test-classes, here is a path: target/test-classes/teva/readme
After that, you can access the folder using code, already offered by @ashosborne1 (I'm sorry, that I could not edit this code inside of this list of items correctly):
public static final String TEVA_FOLDER = "teva"; ... URL tevaUrl = YourTest.class.getClassLoader().getResource(TEVA_FOLDER); String tevaTestFolder = new File(tevaUrl.toURI()).getAbsolutePath();
Now you can run your test via IDE as many times as you want. Until you run mvn clean. It will drop the target folder.
Creating file inside a test folder and running maven first time, before you run tests via IDE are needed steps. Without these steps, if you just in your IDE create test resources, then write test and run it via IDE only, you'll get an error. Running tests via mvn copies test resources into target/test-classes/teva/readme and they become accessible for a classloader.
You may ask, why do I need import more than one maven project in IDE and why so many complicated things? For me, one of the main motivation: keeping IDA-related files far from code. I first create a new project in my IDE. It is a fake project, that is just a holder of IDE-related files. Then, I import already existing maven projects. I force these imported projects to keep IDEA files in my original fake project only. As a result I don't see IDE-related files among the code. SVN should not see them (don't offer to configure svn/git to ignore such files, please). Also it is just very convenient.
I use SOAPUI 5.3.0
, it has an option for creating requests/responses (also using WSDL), you can even create a mock service which will respond when you send request. Procedure is as follows:
EDIT #1:
Check out the SoapUI link for the latest version. There is a Pro version as well as the free open source version.
Coming from SQL Server as well, and this really bugged me. For those using Toad Data Point or Toad for Oracle, it's extremely simple. Just putting a colon in front of your variable name will prompt Toad to open a dialog where you enter the value on execute.
SELECT * FROM some_table WHERE some_column = :var_name;
Use Calendar
Calendar.getInstance().get(Calendar.MILLISECOND);
or
Calendar c=Calendar.getInstance();
c.setTime(new Date()); /* whatever*/
//c.setTimeZone(...); if necessary
c.get(Calendar.MILLISECOND);
In practise though I think it will nearly always equal System.currentTimeMillis()%1000; unless someone has leap-milliseconds or some calendar is defined with an epoch not on a second-boundary.
Although Martijin's answer is prob best. Here is a more intuitive way to process large csv files for beginners. This allows you to process groups of rows, or chunks, at a time.
import pandas as pd
chunksize = 10 ** 8
for chunk in pd.read_csv(filename, chunksize=chunksize):
process(chunk)
Here's the code to do a nice smooth fade between two Activities..
Create a file called fadein.xml
in res/anim
<?xml version="1.0" encoding="utf-8"?>
<alpha xmlns:android="http://schemas.android.com/apk/res/android"
android:interpolator="@android:anim/accelerate_interpolator"
android:fromAlpha="0.0" android:toAlpha="1.0" android:duration="2000" />
Create a file called fadeout.xml
in res/anim
<?xml version="1.0" encoding="utf-8"?>
<alpha xmlns:android="http://schemas.android.com/apk/res/android"
android:interpolator="@android:anim/accelerate_interpolator"
android:fromAlpha="1.0" android:toAlpha="0.0" android:duration="2000" />
If you want to fade from Activity A to Activity B, put the following in the onCreate()
method for Activity B. Before setContentView()
works for me.
overridePendingTransition(R.anim.fadein, R.anim.fadeout);
If the fades are too slow for you, change android:duration
in the xml files above to something smaller.
EDIT: Per @sshow's comment, if you're trying to run your node app on port 80, the below is not the best way to do it. Here's a better answer: How do I run Node.js on port 80?
Original Answer:
If you want to do this to run on port 80 (or want to set the env variable more permanently),
vim ~/.bash_profile
export PORT=80
sudo visudo
Defaults env_keep +="PORT"
Now when you run sudo node app.js
it should work as desired.
Update! You can access the Android filesystem via Android Device Monitor. In Android Studio go to Tools >> Android >> Android Device Monitor.
Note that you can run your app in the simulator while using the Android Device Monitor. But you cannot debug you app while using the Android Device Monitor.
public class FileUploadExample extends HttpServlet {
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
boolean isMultipart = ServletFileUpload.isMultipartContent(request);
if (isMultipart) {
// Create a factory for disk-based file items
FileItemFactory factory = new DiskFileItemFactory();
// Create a new file upload handler
ServletFileUpload upload = new ServletFileUpload(factory);
try {
// Parse the request
List items = upload.parseRequest(request);
Iterator iterator = items.iterator();
while (iterator.hasNext()) {
FileItem item = (FileItem) iterator.next();
if (!item.isFormField()) {
String fileName = item.getName();
String root = getServletContext().getRealPath("/");
File path = new File(root + "/uploads");
if (!path.exists()) {
boolean status = path.mkdirs();
}
File uploadedFile = new File(path + "/" + fileName);
System.out.println(uploadedFile.getAbsolutePath());
item.write(uploadedFile);
}
}
} catch (FileUploadException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
}
}
}
You appear to be trying to mix query expression syntax and "normal" lambda expression syntax. You can either use:
IEnumerable<SelectListItem> stores =
from store in database.Stores
where store.CompanyID == curCompany.ID
select new SelectListItem { Value = store.Name, Text = store.ID};
ViewBag.storeSelector = stores;
Or:
IEnumerable<SelectListItem> stores = database.Stores
.Where(store => store.CompanyID == curCompany.ID)
.Select(s => new SelectListItem { Value = s.Name, Text = s.ID});
ViewBag.storeSelector = stores;
You can't mix the two like you're trying to.
Instructions:
which java
to find the path to the Java
executable file.su -
to become the root user.vi /root/.bash_profile
to open the system
bash_profile file in the Vi text editor. You can replace vi with
your preferred text editor.export JAVA_HOME=/usr/local/java/
at the bottom of the file.
Replace /usr/local/java
with the location found in step two.exit
to close the root session.echo $JAVA_HOME
to ensure that the path was set
correctly.The most likely reason why the Java Runtime Environment JRE or Java Development Kit JDK is that it's owned by Oracle not Google and they would need a redistribution agreement which if you know there is some history between the two companies.
Lucky for us that Sun Microsystems before it was bought by Oracle open sourced Java and MySQL a win for us little guys.... Thank you Sun!
Google should probably have a caveat saying you may also need JRE OR JDK
Like many languages, Javascript has a modulus operator %
, that finds the remainder of division. If there is no remainder after division by 2, a number is even:
// this expression is true if "number" is even, false otherwise
(number % 2 == 0)
This is a very common idiom for testing for even integers.
Here's my modification of the OP's answer.
In short, many people who tried to optimize this complained that a loop was being used. Yes, while loops can be slow, other approaches can be inaccurate.
Therefore, my approach uses Binary Search to find the best Font Size:
$.fn.textfill = function()
{
var self = $(this);
var parent = self.parent();
var attr = self.attr('max-font-size');
var maxFontSize = parseInt(attr, 10);
var unit = attr.replace(maxFontSize, "");
var minFontSize = parseInt(self.attr('min-font-size').replace(unit, ""));
var fontSize = (maxFontSize + minFontSize) / 2;
var maxHeight = parent.height();
var maxWidth = parent.width();
var textHeight;
var textWidth;
do
{
self.css('font-size', fontSize + unit);
textHeight = self.height();
textWidth = self.width();
if(textHeight > maxHeight || textWidth > maxWidth)
{
maxFontSize = fontSize;
fontSize = Math.floor((fontSize + minFontSize) / 2);
}
else if(textHeight < maxHeight || textWidth < maxWidth)
{
minFontSize = fontSize;
fontSize = Math.floor((fontSize + maxFontSize) / 2);
}
else
break;
}
while(maxFontSize - minFontSize > 1 && maxFontSize > minFontSize);
self.css('font-size', fontSize + unit);
return this;
}
function resizeText()
{
$(".textfill").textfill();
}
$(document).ready(resizeText);
$(window).resize(resizeText);
This also allows the element to specify the minimum and maximum font:
<div class="container">
<div class="textfill" min-font-size="10px" max-font-size="72px">
Text that will fill the container, to the best of its abilities, and it will <i>never</i> have overflow.
</div>
</div>
Furthermore, this algorithm is unitless. You may specify em
, rem
, %
, etc. and it will use that for its final result.
Here's the Fiddle: https://jsfiddle.net/fkhqhnqe/1/
SparkSQl support writing programs using Dataset and Dataframe API, along with it need to support sql.
In order to support Sql on DataFrames, first it requires a table definition with column names are required, along with if it creates tables the hive metastore will get lot unnecessary tables, because Spark-Sql natively resides on hive. So it will create a temporary view, which temporarily available in hive for time being and used as any other hive table, once the Spark Context stop it will be removed.
In order to create the view, developer need an utility called createOrReplaceTempView
I always go for the second method (using the GString template), though when there are more than a couple of parameters like you have, I tend to wrap them in ${X}
as I find it makes it more readable.
Running some benchmarks (using Nagai Masato's excellent GBench module) on these methods also shows templating is faster than the other methods:
@Grab( 'com.googlecode.gbench:gbench:0.3.0-groovy-2.0' )
import gbench.*
def (foo,bar,baz) = [ 'foo', 'bar', 'baz' ]
new BenchmarkBuilder().run( measureCpuTime:false ) {
// Just add the strings
'String adder' {
foo + bar + baz
}
// Templating
'GString template' {
"$foo$bar$baz"
}
// I find this more readable
'Readable GString template' {
"${foo}${bar}${baz}"
}
// StringBuilder
'StringBuilder' {
new StringBuilder().append( foo )
.append( bar )
.append( baz )
.toString()
}
'StringBuffer' {
new StringBuffer().append( foo )
.append( bar )
.append( baz )
.toString()
}
}.prettyPrint()
That gives me the following output on my machine:
Environment
===========
* Groovy: 2.0.0
* JVM: Java HotSpot(TM) 64-Bit Server VM (20.6-b01-415, Apple Inc.)
* JRE: 1.6.0_31
* Total Memory: 81.0625 MB
* Maximum Memory: 123.9375 MB
* OS: Mac OS X (10.6.8, x86_64)
Options
=======
* Warm Up: Auto
* CPU Time Measurement: Off
String adder 539
GString template 245
Readable GString template 244
StringBuilder 318
StringBuffer 370
So with readability and speed in it's favour, I'd recommend templating ;-)
NB: If you add toString()
to the end of the GString methods to make the output type the same as the other metrics, and make it a fairer test, StringBuilder
and StringBuffer
beat the GString methods for speed. However as GString can be used in place of String for most things (you just need to exercise caution with Map keys and SQL statements), it can mostly be left without this final conversion
Adding these tests (as it has been asked in the comments)
'GString template toString' {
"$foo$bar$baz".toString()
}
'Readable GString template toString' {
"${foo}${bar}${baz}".toString()
}
Now we get the results:
String adder 514
GString template 267
Readable GString template 269
GString template toString 478
Readable GString template toString 480
StringBuilder 321
StringBuffer 369
So as you can see (as I said), it is slower than StringBuilder or StringBuffer, but still a bit faster than adding Strings...
But still lots more readable.
Updated to latest gbench, larger strings for concatenation and a test with a StringBuilder initialised to a good size:
@Grab( 'org.gperfutils:gbench:0.4.2-groovy-2.1' )
def (foo,bar,baz) = [ 'foo' * 50, 'bar' * 50, 'baz' * 50 ]
benchmark {
// Just add the strings
'String adder' {
foo + bar + baz
}
// Templating
'GString template' {
"$foo$bar$baz"
}
// I find this more readable
'Readable GString template' {
"${foo}${bar}${baz}"
}
'GString template toString' {
"$foo$bar$baz".toString()
}
'Readable GString template toString' {
"${foo}${bar}${baz}".toString()
}
// StringBuilder
'StringBuilder' {
new StringBuilder().append( foo )
.append( bar )
.append( baz )
.toString()
}
'StringBuffer' {
new StringBuffer().append( foo )
.append( bar )
.append( baz )
.toString()
}
'StringBuffer with Allocation' {
new StringBuffer( 512 ).append( foo )
.append( bar )
.append( baz )
.toString()
}
}.prettyPrint()
gives
Environment
===========
* Groovy: 2.1.6
* JVM: Java HotSpot(TM) 64-Bit Server VM (23.21-b01, Oracle Corporation)
* JRE: 1.7.0_21
* Total Memory: 467.375 MB
* Maximum Memory: 1077.375 MB
* OS: Mac OS X (10.8.4, x86_64)
Options
=======
* Warm Up: Auto (- 60 sec)
* CPU Time Measurement: On
user system cpu real
String adder 630 0 630 647
GString template 29 0 29 31
Readable GString template 32 0 32 33
GString template toString 429 0 429 443
Readable GString template toString 428 1 429 441
StringBuilder 383 1 384 396
StringBuffer 395 1 396 409
StringBuffer with Allocation 277 0 277 286
None of the above, if you are on a Mac. Use Charles Proxy. It's the best network/request information collecter that I have ever come across. You can view and edit all outgoing requests, and see the responses from those requests in several forms, depending on the type of the response. It costs 50 dollars for a license, but you can download the trial version and see what you think.
If your on Windows, then I would just stay with Fiddler.
I had this error and in my case, the problem was that I was using "localhost" in the URL.
I resolved that changing the localhost word for the respective IP, (Windows + R -> cmd -> ipconfig)
then read the IP and write it to the URL replacing the "localhost" word
Use
[A-Z]?
to make the letter optional. {1}
is redundant. (Of course you could also write [A-Z]{0,1}
which would mean the same, but that's what the ?
is there for.)
You could improve your regex to
^([0-9]{5})+\s+([A-Z]?)\s+([A-Z])([0-9]{3})([0-9]{3})([A-Z]{3})([A-Z]{3})\s+([A-Z])[0-9]{3}([0-9]{4})([0-9]{2})([0-9]{2})
And, since in most regex dialects, \d
is the same as [0-9]
:
^(\d{5})+\s+([A-Z]?)\s+([A-Z])(\d{3})(\d{3})([A-Z]{3})([A-Z]{3})\s+([A-Z])\d{3}(\d{4})(\d{2})(\d{2})
But: do you really need 11 separate capturing groups? And if so, why don't you capture the fourth-to-last group of digits?
Some people say C doesn't have namespaces but that is not technically correct. It has three:
enum
, union
, and struct
)typedef enum { } XYZ;
declares an anonymous enumeration and imports it into the global namespace with the name XYZ
.
typedef enum ABC { } XYZ;
declares an enum named ABC
in the tag namespace, then imports it into the global namespace as XYZ
.
Some people don't want to bother with the separate namespaces so they typedef everything. Others never typedef because they want the namespacing.
Just in case someone still facing an error after trying to import CommonModule
, try to restart the server. It surprisingly work
In addition with what @Camilo Silva already mentioned, if you want to give free access to create databases, read, write databases, etc, but you don't want to create a root role, you can change the 3rd step with the following:
use admin
db.createUser(
{
user: "myUserAdmin",
pwd: "abc123",
roles: [ { role: "userAdminAnyDatabase", db: "admin" },
{ role: "dbAdminAnyDatabase", db: "admin" },
{ role: "readWriteAnyDatabase", db: "admin" } ]
}
)
Go's net/http package has many functions that deal with headers. Among them are Add, Del, Get and Set methods. The way to use Set is:
func yourHandler(w http.ResponseWriter, r *http.Request) {
w.Header().Set("header_name", "header_value")
}
referenceNode.parentNode.insertBefore(newNode, referenceNode.nextSibling);
Where referenceNode
is the node you want to put newNode
after. If referenceNode
is the last child within its parent element, that's fine, because referenceNode.nextSibling
will be null
and insertBefore
handles that case by adding to the end of the list.
So:
function insertAfter(newNode, referenceNode) {
referenceNode.parentNode.insertBefore(newNode, referenceNode.nextSibling);
}
You can test it using the following snippet:
function insertAfter(referenceNode, newNode) {_x000D_
referenceNode.parentNode.insertBefore(newNode, referenceNode.nextSibling);_x000D_
}_x000D_
_x000D_
var el = document.createElement("span");_x000D_
el.innerHTML = "test";_x000D_
var div = document.getElementById("foo");_x000D_
insertAfter(div, el);
_x000D_
<div id="foo">Hello</div>
_x000D_
This is what I did for bulk update:
UPDATE tableName SET isDeleted = 1 where columnName in ('430903GW4j683537882','430903GW4j667075431','430903GW4j658444015')
Might benefit you to be aware of another option, word-wrap: break-word;
The difference here is that words that can completely fit on 1 line will do that, vs. being forced to break simply because there is no more real estate on the line the word starts on.
See the fiddle for an illustration http://jsfiddle.net/Jqkcp/
With Java 8's lambdas, a convenient way is to use
org.mockito.invocation.InvocationOnMock
when(client.deleteByQuery(anyString(), anyString())).then(invocationOnMock -> {
assertEquals("myCollection", invocationOnMock.getArgument(0));
assertThat(invocationOnMock.getArgument(1), Matchers.startsWith("id:"));
}
You can either add or replace fragment in your activity. Create a FrameLayout
in activity layout xml
file.
Then do this in your activity to add fragment:
FragmentManager manager = getFragmentManager();
FragmentTransaction transaction = manager.beginTransaction();
transaction.add(R.id.container,YOUR_FRAGMENT_NAME,YOUR_FRAGMENT_STRING_TAG);
transaction.addToBackStack(null);
transaction.commit();
And to replace fragment do this:
FragmentManager manager = getFragmentManager();
FragmentTransaction transaction = manager.beginTransaction();
transaction.replace(R.id.container,YOUR_FRAGMENT_NAME,YOUR_FRAGMENT_STRING_TAG);
transaction.addToBackStack(null);
transaction.commit();
See Android documentation on adding a fragment to an activity or following related questions on SO:
Difference between add(), replace(), and addToBackStack()
Basic difference between add() and replace() method of Fragment
Difference between add() & replace() with Fragment's lifecycle
In raw javascript, you'll want to put an id on your anchor tag and do this:
<html>
<script>
var simpleText = "hello_world";
var finalSplitText = simpleText.split("_");
var splitText = finalSplitText[0];
function insertText(){
document.getElementById('someId').InnerHTML = splitText;}
</script>
<body onload="insertText()">
<a href = test.html id="someId">I need the value of "splitText" variable here</a>
</body>
</html>
To stop or start mysql on most linux systems the following should work:
/etc/init.d/mysqld stop
/etc/init.d/mysqld start
The other answers look good for accessing the mysql client from the command line.
Good luck!
The accepted answer did not work for me. The Date returned is always the local Date and not the Date for the original Time Zone. I live in UTC+2.
//This did not work for me
Date.from(java.time.ZonedDateTime.now().toInstant());
I have come up with two alternative ways to get the correct Date from a ZonedDateTime.
Say you have this ZonedDateTime for Hawaii
LocalDateTime ldt = LocalDateTime.now();
ZonedDateTime zdt = ldt.atZone(ZoneId.of("US/Hawaii"); // UTC-10
or for UTC as asked originally
Instant zulu = Instant.now(); // GMT, UTC+0
ZonedDateTime zdt = zulu.atZone(ZoneId.of("UTC"));
Alternative 1
We can use java.sql.Timestamp. It is simple but it will probably also make a dent in your programming integrity
Date date1 = Timestamp.valueOf(zdt.toLocalDateTime());
Alternative 2
We create the Date from millis (answered here earlier). Note that local ZoneOffset is a must.
ZoneOffset localOffset = ZoneOffset.systemDefault().getRules().getOffset(LocalDateTime.now());
long zonedMillis = 1000L * zdt.toLocalDateTime().toEpochSecond(localOffset) + zdt.toLocalDateTime().getNano() / 1000000L;
Date date2 = new Date(zonedMillis);
Use insert() to insert an element before a given position.
For instance, with
arr = ['A','B','C']
arr.insert(0,'D')
arr becomes ['D','A','B','C']
because D
is inserted before the element at index 0.
Now, for
arr = ['A','B','C']
arr.insert(4,'D')
arr becomes ['A','B','C','D']
because D
is inserted before the element at index 4 (which is 1 beyond the end of the array).
However, if you are looking to generate all permutations of an array, there are ways to do this already built into Python. The itertools package has a permutation generator.
Here's some example code:
import itertools
arr = ['A','B','C']
perms = itertools.permutations(arr)
for perm in perms:
print perm
will print out
('A', 'B', 'C')
('A', 'C', 'B')
('B', 'A', 'C')
('B', 'C', 'A')
('C', 'A', 'B')
('C', 'B', 'A')
Given a root Vue instance is accessible by all descendants via this.$root
, a parent component can access child components via the this.$children
array, and a child component can access it's parent via this.$parent
, your first instinct might be to access these components directly.
The VueJS documentation warns against this specifically for two very good reasons:
The event interface implemented by Vue allows you to communicate up and down the component tree. Leveraging the custom event interface gives you access to four methods:
$on()
- allows you to declare a listener on your Vue instance with which to listen to events$emit()
- allows you to trigger events on the same instance (self)$on()
and $emit()
:const events = new Vue({}),_x000D_
parentComponent = new Vue({_x000D_
el: '#parent',_x000D_
ready() {_x000D_
events.$on('eventGreet', () => {_x000D_
this.parentMsg = `I heard the greeting event from Child component ${++this.counter} times..`;_x000D_
});_x000D_
},_x000D_
data: {_x000D_
parentMsg: 'I am listening for an event..',_x000D_
counter: 0_x000D_
}_x000D_
}),_x000D_
childComponent = new Vue({_x000D_
el: '#child',_x000D_
methods: {_x000D_
greet: function () {_x000D_
events.$emit('eventGreet');_x000D_
this.childMsg = `I am firing greeting event ${++this.counter} times..`;_x000D_
}_x000D_
},_x000D_
data: {_x000D_
childMsg: 'I am getting ready to fire an event.',_x000D_
counter: 0_x000D_
}_x000D_
});
_x000D_
<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/1.0.28/vue.min.js"></script>_x000D_
_x000D_
<div id="parent">_x000D_
<h2>Parent Component</h2>_x000D_
<p>{{parentMsg}}</p>_x000D_
</div>_x000D_
_x000D_
<div id="child">_x000D_
<h2>Child Component</h2>_x000D_
<p>{{childMsg}}</p>_x000D_
<button v-on:click="greet">Greet</button>_x000D_
</div>
_x000D_
Answer taken from the original post: Communicating between components in VueJS
fun hasPermission(permission: String): Boolean {
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) return true // must be granted after installed.
return mAppSet.appContext.checkSelfPermission(permission) == PackageManager.PERMISSION_GRANTED
}
Given that Windows has no sys/socket.h, you might consider just doing something like this:
#ifdef __WIN32__
# include <winsock2.h>
#else
# include <sys/socket.h>
#endif
I know you indicated that you won't use WinSock, but since WinSock is how TCP networking is done under Windows, I don't see that you have any alternative. Even if you use a cross-platform networking library, that library will be calling WinSock internally. Most of the standard BSD sockets API calls are implemented in WinSock, so with a bit of futzing around, you can make the same sockets-based program compile under both Windows and other OS's. Just don't forget to do a
#ifdef __WIN32__
WORD versionWanted = MAKEWORD(1, 1);
WSADATA wsaData;
WSAStartup(versionWanted, &wsaData);
#endif
at the top of main()... otherwise all of your socket calls will fail under Windows, because the WSA subsystem wasn't initialized for your process.
How about using a drop-in solution like ShareThis or AddThis? They have similar functionality, so it's quite possible they already solved the problem.
AddThis's code has a huge if/else browser version fork for saving favorites, though, with most branches ending in prompting the user to manually add the favorite themselves, so I am thinking that no such pure JavaScript implementation exists.
Otherwise, if you only need to support IE and Firefox, you have IE's window.externalAddFavorite( ) and Mozilla's window.sidebar.addPanel( ).
Another approach would be to add the following line to package.json
dependencies:
"package-name": "user/repo#branch"
For example:
"dependencies": {
... other dependencies ...
"react-native": "facebook/react-native#master"
}
And then do npm install
or yarn install
Thanks to ZipArchive creates invalid ZIP file, I got:
using (var memoryStream = new MemoryStream())
{
using (var archive = new ZipArchive(memoryStream, ZipArchiveMode.Create, true))
{
var demoFile = archive.CreateEntry("foo.txt");
using (var entryStream = demoFile.Open())
using (var streamWriter = new StreamWriter(entryStream))
{
streamWriter.Write("Bar!");
}
}
using (var fileStream = new FileStream(@"C:\Temp\test.zip", FileMode.Create))
{
memoryStream.Seek(0, SeekOrigin.Begin);
memoryStream.CopyTo(fileStream);
}
}
That indicated we need to call Dispose
on ZipArchive
before we can use it, which as Amir suggests is likely because it writes final bytes like checksum to the archive that makes it complete. But in order not close the stream so we can re-use it after you need to pass true
as the third parameter to ZipArchive
.
how to convert JTextField to string and string to JTextField in java
If you mean how to get and set String from jTextField then you can use following methods:
String str = jTextField.getText() // get string from jtextfield
and
jTextField.setText(str) // set string to jtextfield
//or
new JTextField(str) // set string to jtextfield
You should check JavaDoc for JTextField
What about something like this:
SELECT
name,
count(*) AS num
FROM
your_table
GROUP BY
name
ORDER BY
count(*)
DESC
You are selecting the name and the number of times it appears, but grouping by name so each name is selected only once.
Finally, you order by the number of times in DESCending order, to have the most frequently appearing users come first.
What about something like this ?
class Configuration
{
private $config;
public function __construct($configIniFilePath)
{
$this->config = parse_ini_file($configIniFilePath, true);
}
/**
* Gets the value for the specified setting name.
*
* @param string $name the setting name
* @param string $section optional, the name of the section containing the
* setting
* @return string|null the value of the setting, or null if it doesn't exist
*/
public function getConfiguration($name, $section = null)
{
$configValue = null;
if ($section === null) {
if (array_key_exists($name, $this->config)) {
$configValue = $this->config[$name];
}
} else {
if (array_key_exists($section, $this->config)) {
$sectionSettings = $this->config[$section];
if (array_key_exists($name, $sectionSettings)) {
$configValue = $sectionSettings[$name];
}
}
}
return $configValue;
}
}
jQuery.fn.extend({
zigzag: function () {
var text = $(this).text();
var zigzagText = '';
var toggle = true; //lower/uppper toggle
$.each(text, function(i, nome) {
zigzagText += (toggle) ? nome.toUpperCase() : nome.toLowerCase();
toggle = (toggle) ? false : true;
});
return zigzagText;
}
});
For Select2 v4:
Use dropdownParent
to attach the dropdown to the modal dialog, rather than the HTML body.
<!-- Modal -->
<div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel">
<div class="modal-dialog" role="document">
<div class="modal-content">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">×</span></button>
<h4 class="modal-title" id="myModalLabel">Modal title</h4>
</div>
<div class="modal-body">
<select id="select2insidemodal" multiple="multiple">
<option value="AL">Alabama</option>
...
<option value="WY">Wyoming</option>
</select>
</div>
<div class="modal-footer">
<button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
<button type="button" class="btn btn-primary">Save changes</button>
</div>
</div>
</div>
</div>
<script>
$(document).ready(function() {
$("#select2insidemodal").select2({
dropdownParent: $("#myModal")
});
});
</script>
This will attach the Select2 dropdown so it falls within the DOM of the modal rather than to the HTML body (the default). See https://select2.org/dropdown#dropdown-placement
The USAGE-privilege in mysql simply means that there are no privileges for the user 'phpadmin'@'localhost' defined on global level *.*
. Additionally the same user has ALL-privilege on database phpmyadmin phpadmin.*
.
So if you want to remove all the privileges and start totally from scratch do the following:
Revoke all privileges on database level:
REVOKE ALL PRIVILEGES ON phpmyadmin.* FROM 'phpmyadmin'@'localhost';
Drop the user 'phpmyadmin'@'localhost'
DROP USER 'phpmyadmin'@'localhost';
Above procedure will entirely remove the user from your instance, this means you can recreate him from scratch.
To give you a bit background on what described above: as soon as you create a user the mysql.user
table will be populated. If you look on a record in it, you will see the user and all privileges set to 'N'
. If you do a show grants for 'phpmyadmin'@'localhost';
you will see, the allready familliar, output above. Simply translated to "no privileges on global level for the user". Now your grant ALL
to this user on database level, this will be stored in the table mysql.db
. If you do a SELECT * FROM mysql.db WHERE db = 'nameofdb';
you will see a 'Y'
on every priv.
Above described shows the scenario you have on your db at the present. So having a user that only has USAGE
privilege means, that this user can connect, but besides of SHOW GLOBAL VARIABLES; SHOW GLOBAL STATUS;
he has no other privileges.
A very simple example:
SET a=Hello
SET b=World
SET c=%a% %b%!
echo %c%
The result should be:
Hello World!
I solved this error
A connection attempt failed with "ECONNREFUSED - Connection refused by server"
by changing my port to 22 that was successful
Just because nobody mentioned it yet: using RAW(1) also seems common practice.
Well, the problem you have is wrong line ending/encoding for notepad. Notepad uses Windows' line endings - \r\n
and you use \n
.
When I create a root class, whose methods I defined using the arrow functions. When inheriting and overwriting the original function I noticed the same issue.
class C {
x = () => 1;
};
class CC extends C {
x = (foo) => super.x() + foo;
};
let add = new CC;
console.log(add.x(4));
this is solved by defining the method of the parent class without arrow functions
class C {
x() {
return 1;
};
};
class CC extends C {
x = foo => super.x() + foo;
};
let add = new CC;
console.log(add.x(4));
The first set of errors, for the missing vtable, are caused because you do not implement takeaway::textualGame()
; instead you implement a non-member function, textualGame()
. I think that adding the missing takeaway::
will fix that.
The cause of the last error is that you're calling a virtual function, initialData()
, from the constructor of gameCore
. At this stage, virtual functions are dispatched according to the type currently being constructed (gameCore
), not the most derived class (takeaway
). This particular function is pure virtual, and so calling it here gives undefined behaviour.
Two possible solutions:
gameCore
out of the constructor and into a separate initialisation function, which must be called after the object is fully constructed; orgameCore
into two classes: an abstract interface to be implemented by takeaway
, and a concrete class containing the state. Construct takeaway
first, and then pass it (via a reference to the interface class) to the constructor of the concrete class.I would recommend the second, as it is a move towards smaller classes and looser coupling, and it will be harder to use the classes incorrectly. The first is more error-prone, as there is no way be sure that the initialisation function is called correctly.
One final point: the destructor of a base class should usually either be virtual (to allow polymorphic deletion) or protected (to prevent invalid polymorphic deletion).
This worked for me best
NSString *name = [[UIDevice currentDevice] name];
if ([name isEqualToString:@"iPhone Simulator"]) {
}
You can't. And it's a security measure. Imagine if someone writes JS that sets file input value to some sensitive data file?
Try it :Laravel 5.5
public function destroy($id){
$data = User::FindOrFail($id);
if(file_exists('backend_assets/uploads/userPhoto/'.$data->photo) AND !empty($data->photo)){
unlink('backend_assets/uploads/userPhoto/'.$data->photo);
}
try{
$data->delete();
$bug = 0;
}
catch(\Exception $e){
$bug = $e->errorInfo[1];
}
if($bug==0){
echo "success";
}else{
echo 'error';
}
}
There are two options. Ayman's approach is the most simple, but I would add one extra note to it. You should really cache jQuery selections, there is no reason to call $("#input-field-id")
twice:
var input = $( "#input-field-id" );
input.val( input.val() + "more text" );
The other option, .val()
can also take a function as an argument. This has the advantange of easily working on multiple inputs:
$( "input" ).val( function( index, val ) {
return val + "more text";
});
I know nothing about Jenkins, but it looks like you are trying to access environment variables using some form of unix syntax - that won't work.
If the name of the variable is WORKSPACE, then the value is expanded in Windows batch using
%WORKSPACE%
. That form of expansion is performed at parse time. For example, this will print to screen the value of WORKSPACE
echo %WORKSPACE%
If you need the value at execution time, then you need to use delayed expansion !WORKSPACE!
. Delayed expansion is not normally enabled by default. Use SETLOCAL EnableDelayedExpansion
to enable it. Delayed expansion is often needed because blocks of code within parentheses and/or multiple commands concatenated by &
, &&
, or ||
are parsed all at once, so a value assigned within the block cannot be read later within the same block unless you use delayed expansion.
setlocal enableDelayedExpansion
set WORKSPACE=BEFORE
(
set WORKSPACE=AFTER
echo Normal Expansion = %WORKSPACE%
echo Delayed Expansion = !WORKSPACE!
)
The output of the above is
Normal Expansion = BEFORE
Delayed Expansion = AFTER
Use HELP SET
or SET /?
from the command line to get more information about Windows environment variables and the various expansion options. For example, it explains how to do search/replace and substring operations.
Since there doesn't seem to be a .Net-culture that yields the correct ISO-8601 week number, I'd rather bypass the built-in week determination altogether, and do the calculation manually, instead of attempting to correct a partially correct result.
What I ended up with is the following extension method:
/// <summary>
/// Converts a date to a week number.
/// ISO 8601 week 1 is the week that contains the first Thursday that year.
/// </summary>
public static int ToIso8601Weeknumber(this DateTime date)
{
var thursday = date.AddDays(3 - date.DayOfWeek.DayOffset());
return (thursday.DayOfYear - 1) / 7 + 1;
}
/// <summary>
/// Converts a week number to a date.
/// Note: Week 1 of a year may start in the previous year.
/// ISO 8601 week 1 is the week that contains the first Thursday that year, so
/// if December 28 is a Monday, December 31 is a Thursday,
/// and week 1 starts January 4.
/// If December 28 is a later day in the week, week 1 starts earlier.
/// If December 28 is a Sunday, it is in the same week as Thursday January 1.
/// </summary>
public static DateTime FromIso8601Weeknumber(int weekNumber, int? year = null, DayOfWeek day = DayOfWeek.Monday)
{
var dec28 = new DateTime((year ?? DateTime.Today.Year) - 1, 12, 28);
var monday = dec28.AddDays(7 * weekNumber - dec28.DayOfWeek.DayOffset());
return monday.AddDays(day.DayOffset());
}
/// <summary>
/// Iso8601 weeks start on Monday. This returns 0 for Monday.
/// </summary>
private static int DayOffset(this DayOfWeek weekDay)
{
return ((int)weekDay + 6) % 7;
}
First of all, ((int)date.DayOfWeek + 6) % 7)
determines the weekday number, 0=monday, 6=sunday.
date.AddDays(-((int)date.DayOfWeek + 6) % 7)
determines the date of the monday preceiding the requested week number.
Three days later is the target thursday, which determines what year the week is in.
If you divide the (zero based) day-number within the year by seven (round down), you get the (zero based) week number in the year.
In c#, integer calculation results are round down implicitly.
I've tried many times.
And at last I just put autoindex on;
in http
but outside of server
, and it's OK.
~/Library/Developer/Xcode/DerivedData
is now the default.
You can set the prefs in Xcode to allow projects to specify their build directories.
.aku {
transition: all .2s ease-in-out;
}
.aku:hover {
transform: scale(1.1);
}
Install the cors
middleware. We were trying to solve it with our own code, but all attempts failed miserably.
This made it work:
cors = require('cors')
app.use(cors());
Use Linq-XML,
XDocument doc = XDocument.Load(file);
var result = from ele in doc.Descendants("sog")
select new
{
field1 = (string)ele.Element("field1")
};
foreach (var t in result)
{
HttpContext.Current.Response.Write(t.field1);
}
OR : Get the node list of <sog>
tag.
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.Load(myXML);
XmlNodeList parentNode = xmlDoc.GetElementsByTagName("sog");
foreach (XmlNode childrenNode in parentNode)
{
HttpContext.Current.Response.Write(childrenNode.SelectSingleNode("field1").InnerText);
}
$('.blink').fadeIn('fast')
.animate({
color: "#FFCD56"
}, 100).animate({
color: "white"
}, 100)
.animate({
color: "#FFCD56"
}, 100).animate({
color: "white"
}, 100)
.animate({
color: "#FFCD56"
}, 100).animate({
color: "white"
}, 100)
.animate({
color: "#FFCD56"
}, 100).animate({
color: "white"
}, 100)
.animate({
color: "#FFCD56"
}, 100).animate({
color: "white"
}, 100);
To handle One-To-Many relationships in Django you need to use ForeignKey
.
The documentation on ForeignKey is very comprehensive and should answer all the questions you have:
https://docs.djangoproject.com/en/dev/ref/models/fields/#foreignkey
The current structure in your example allows each Dude to have one number, and each number to belong to multiple Dudes (same with Business).
If you want the reverse relationship, you would need to add two ForeignKey fields to your PhoneNumber model, one to Dude and one to Business. This would allow each number to belong to either one Dude or one Business, and have Dudes and Businesses able to own multiple Numbers. I think this might be what you are after.
class Business(models.Model):
...
class Dude(models.Model):
...
class PhoneNumber(models.Model):
dude = models.ForeignKey(Dude)
business = models.ForeignKey(Business)
You can assign a variable to the return value of Get-Variable then check to see if it is null:
$variable = Get-Variable -Name foo -Scope Global -ErrorAction SilentlyContinue
if ($variable -eq $null)
{
Write-Host "foo does not exist"
}
# else...
Just be aware that the variable has to be assigned to something for it to "exist". For example:
$global:foo = $null
$variable = Get-Variable -Name foo -Scope Global -ErrorAction SilentlyContinue
if ($variable -eq $null)
{
Write-Host "foo does not exist"
}
else
{
Write-Host "foo exists"
}
$global:bar
$variable = Get-Variable -Name bar -Scope Global -ErrorAction SilentlyContinue
if ($variable -eq $null)
{
Write-Host "bar does not exist"
}
else
{
Write-Host "bar exists"
}
Output:
foo exists
bar does not exist
You may find it easier to set up your tabs as follows:
M-x customize-group
At the Customize group:
prompt enter indent
.
You'll see a screen where you can set all you indenting options and set them for the current session or save them for all future sessions.
If you do it this way you'll want to set up a customisations file.
public String getIMEI(Context context){
TelephonyManager mngr = (TelephonyManager) context.getSystemService(context.TELEPHONY_SERVICE);
String imei = mngr.getDeviceId();
return imei;
}
Your default alignment is probably 4 bytes. Either the 30 byte element got 32, or the structure as a whole was rounded up to the next 4 byte interval.
Please check this:
$servername='localhost';
$username='root';
$password='';
$databasename='MyDb';
$connection = mysqli_connect($servername,$username,$password);
if (!$connection) {
die("Connection failed: " . $conn->connect_error);
}
/*mysqli_query($connection, "DROP DATABASE if exists MyDb;");
if(!mysqli_query($connection, "CREATE DATABASE MyDb;")){
echo "Error creating database: " . $connection->error;
}
mysqli_query($connection, "use MyDb;");
mysqli_query($connection, "DROP TABLE if exists employee;");
$table="CREATE TABLE employee (
id INT(6) UNSIGNED AUTO_INCREMENT PRIMARY KEY,
firstname VARCHAR(30) NOT NULL,
lastname VARCHAR(30) NOT NULL,
email VARCHAR(50),
reg_date TIMESTAMP
)";
$value="INSERT INTO employee (firstname,lastname,email) VALUES ('john', 'steve', '[email protected]')";
if(!mysqli_query($connection, $table)){echo "Error creating table: " . $connection->error;}
if(!mysqli_query($connection, $value)){echo "Error inserting values: " . $connection->error;}*/
Function RemoveCharacter(ByVal stringToCleanUp, ByVal characterToRemove)
' replace the target with nothing
' Replace() returns a new String and does not modify the current one
Return stringToCleanUp.Replace(characterToRemove, "")
End Function
Here's more information about VB's Replace function
As you have it, the argument w
is expecting a value after -w
on the command line. If you are just looking to flip a switch by setting a variable True
or False
, have a look here (specifically store_true and store_false)
import argparse
parser = argparse.ArgumentParser()
parser.add_argument('-w', action='store_true')
where action='store_true'
implies default=False
.
Conversely, you could haveaction='store_false'
, which implies default=True
.
>>> import math
>>> import numpy as np
>>> import scipy
>>> math.pi == np.pi == scipy.pi
True
So it doesn't matter, they are all the same value.
The only reason all three modules provide a pi
value is so if you are using just one of the three modules, you can conveniently have access to pi without having to import another module. They're not providing different values for pi.
One way I like to use is:
select ,COUNT()as VAR1 from Table_Name
group by
order by VAR1 desc
limit 1
Maybe you can take a look at closure in JavaScript. Here is a working solution:
<!DOCTYPE html>_x000D_
<html>_x000D_
<head>_x000D_
<meta charset="utf-8" />_x000D_
<title>Test</title>_x000D_
</head>_x000D_
<body>_x000D_
<p class="button">Button 0</p>_x000D_
<p class="button">Button 1</p>_x000D_
<p class="button">Button 2</p>_x000D_
<script>_x000D_
var buttons = document.getElementsByClassName('button');_x000D_
for (var i=0 ; i < buttons.length ; i++){_x000D_
(function(index){_x000D_
buttons[index].onclick = function(){_x000D_
alert("I am button " + index);_x000D_
};_x000D_
})(i)_x000D_
}_x000D_
</script>_x000D_
</body>_x000D_
</html>
_x000D_
sudo cp hello.php /var/www/
What output do you get?
MarvinS.-
Try:
$.ajax({
url: uri+'?js',
success: function(data) {
var imgAttr = $("img", data).attr('src');
var htmlCode = $(data).html();
$('#imgSrc').html(imgAttr);
$('#fullHtmlOutput').html(htmlCode);
}
});
This should load the whole html block from data into #fullHtmlOutput and the src of the image into #imgSrc.
If the current method is async then you can use TaskCompletionSource. Create a field that the event handler and the current method can access.
TaskCompletionSource<bool> tcs = null;
private async void Button_Click(object sender, RoutedEventArgs e)
{
tcs = new TaskCompletionSource<bool>();
await tcs.Task;
WelcomeTitle.Text = "Finished work";
}
private void Button_Click2(object sender, RoutedEventArgs e)
{
tcs?.TrySetResult(true);
}
This example uses a form that has a textblock named WelcomeTitle and two buttons. When the first button is clicked it starts the click event but stops at the await line. When the second button is clicked the task is completed and the WelcomeTitle text is updated. If you want to timeout as well then change
await tcs.Task;
to
await Task.WhenAny(tcs.Task, Task.Delay(25000));
if (tcs.Task.IsCompleted)
WelcomeTitle.Text = "Task Completed";
else
WelcomeTitle.Text = "Task Timed Out";
I think that the fastest way to do this is to just clone the node, which will remove all event listeners:
var old_element = document.getElementById("btn");
var new_element = old_element.cloneNode(true);
old_element.parentNode.replaceChild(new_element, old_element);
Just be careful, as this will also clear event listeners on all child elements of the node in question, so if you want to preserve that you'll have to resort to explicitly removing listeners one at a time.
You can refer to this blog for printing formatted coloured text on console
https://javaforqa.wordpress.com/java-print-coloured-table-on-console/
public class ColourConsoleDemo {
/**
*
* @param args
*
* "\033[0m BLACK" will colour the whole line
*
* "\033[37m WHITE\033[0m" will colour only WHITE.
* For colour while Opening --> "\033[37m" and closing --> "\033[0m"
*
*
*/
public static void main(String[] args) {
// TODO code application logic here
System.out.println("\033[0m BLACK");
System.out.println("\033[31m RED");
System.out.println("\033[32m GREEN");
System.out.println("\033[33m YELLOW");
System.out.println("\033[34m BLUE");
System.out.println("\033[35m MAGENTA");
System.out.println("\033[36m CYAN");
System.out.println("\033[37m WHITE\033[0m");
//printing the results
String leftAlignFormat = "| %-20s | %-7d | %-7d | %-7d |%n";
System.out.format("|---------Test Cases with Steps Summary -------------|%n");
System.out.format("+----------------------+---------+---------+---------+%n");
System.out.format("| Test Cases |Passed |Failed |Skipped |%n");
System.out.format("+----------------------+---------+---------+---------+%n");
String formattedMessage = "TEST_01".trim();
leftAlignFormat = "| %-20s | %-7d | %-7d | %-7d |%n";
System.out.print("\033[31m"); // Open print red
System.out.printf(leftAlignFormat, formattedMessage, 2, 1, 0);
System.out.print("\033[0m"); // Close print red
System.out.format("+----------------------+---------+---------+---------+%n");
}
It often appear when you trying to remove python3.5
and install python3.6
.
So when using python3
(which python3 -V
=> python3.6
) to install some packages required python3.5
header will appear this error.
Resolve by install python3.6-dev
module.
Here is a simple one"
public class Palindrome {
public static void main(String [] args){
Palindrome pn = new Palindrome();
if(pn.isPalindrome("ABBA")){
System.out.println("Palindrome");
} else {
System.out.println("Not Palindrome");
}
}
public boolean isPalindrome(String original){
int i = original.length()-1;
int j=0;
while(i > j) {
if(original.charAt(i) != original.charAt(j)) {
return false;
}
i--;
j++;
}
return true;
}
}
Here is Bjarne Stroustrup's wordings,
In C++, the definition of NULL is 0, so there is only an aesthetic difference. I prefer to avoid macros, so I use 0. Another problem with NULL is that people sometimes mistakenly believe that it is different from 0 and/or not an integer. In pre-standard code, NULL was/is sometimes defined to something unsuitable and therefore had/has to be avoided. That's less common these days.
If you have to name the null pointer, call it nullptr; that's what it's called in C++11. Then, "nullptr" will be a keyword.
Since this is a rather popular topic and answers differ, I had to take a fresh look on the problem.
Testing env: EF 6.1.3, SQL Server, 300k records
Table model:
class TestTable
{
[Key]
public int Id { get; set; }
public string Name { get; set; }
public string Surname { get; set; }
}
Test code:
class Program
{
static void Main()
{
using (var context = new TestContext())
{
context.Database.Log = Console.WriteLine;
context.TestTables.Where(x => x.Surname.Contains("Surname")).Any(x => x.Id > 1000);
context.TestTables.Where(x => x.Surname.Contains("Surname") && x.Name.Contains("Name")).Any(x => x.Id > 1000);
context.TestTables.Where(x => x.Surname.Contains("Surname")).Count(x => x.Id > 1000);
context.TestTables.Where(x => x.Surname.Contains("Surname") && x.Name.Contains("Name")).Count(x => x.Id > 1000);
Console.ReadLine();
}
}
}
Results:
Any() ~ 3ms
Count() ~ 230ms for first query, ~ 400ms for second
Remarks:
For my case, EF didn't generate SQL like @Ben mentioned in his post.
I use the following solution, it's quite simple and elegant, can be easily pasted into source, and works on Linux/Bash:
const std::string red("\033[0;31m");
const std::string green("\033[1;32m");
const std::string yellow("\033[1;33m");
const std::string cyan("\033[0;36m");
const std::string magenta("\033[0;35m");
const std::string reset("\033[0m");
std::cout << "Measured runtime: " << yellow << timer.count() << reset << std::endl;
I would use a single Context class inheriting from IdentityDbContext. This way you can have the context be aware of any relations between your classes and the IdentityUser and Roles of the IdentityDbContext. There is very little overhead in the IdentityDbContext, it is basically a regular DbContext with two DbSets. One for the users and one for the roles.
I prefer the JPA2 EntityManager
API over SessionFactory
, because it feels more modern. One simple example:
JPA:
@PersistenceContext
EntityManager entityManager;
public List<MyEntity> findSomeApples() {
return entityManager
.createQuery("from MyEntity where apples=7", MyEntity.class)
.getResultList();
}
SessionFactory:
@Autowired
SessionFactory sessionFactory;
public List<MyEntity> findSomeApples() {
Session session = sessionFactory.getCurrentSession();
List<?> result = session.createQuery("from MyEntity where apples=7")
.list();
@SuppressWarnings("unchecked")
List<MyEntity> resultCasted = (List<MyEntity>) result;
return resultCasted;
}
I think it's clear that the first one looks cleaner and is also easier to test because EntityManager can be easily mocked.
Try the below:
testlist = [1,2,3,5,3,1,2,1,6]
position=0
for i in testlist:
if i == 1:
print(position)
position=position+1
select 'i like' || type_column || ' with' ect....
Maybe map the share as a network drive and then do
git clone Z:\
Mostly just a guess; I always do this stuff using ssh. Following that suggstion of course will mean that you'll need to have that drive mapped every time you push/pull to/from the laptop. I'm not sure how you rig up ssh to work under windows but if you're going to be doing this a lot it might be worth investigating.
https://github.com/facebook/metro/issues/453
for who still get this error without official patch in react-native , expo
use yarn and add this setting into package.json
{
...
"resolutions": {
"metro-config": "bluelovers/metro-config-hotfix-0.56.x"
},
...
You have a mismatch in your character encoding; your string is encoded in one encoding (UTF-8) and whatever is interpreting this page is using another (say ASCII).
Always specify your encoding in your http headers and make sure this matches your framework's definition of encoding.
Sample http header:
Content-Type text/html; charset=utf-8
<configuration>
<system.web>
<globalization
fileEncoding="utf-8"
requestEncoding="utf-8"
responseEncoding="utf-8"
culture="en-US"
uiCulture="de-DE"
/>
</system.web>
</configuration>
On Linux when you run a jar file from terminal, these both will return the same String
: "/home/CurrentUser", no matter, where youre jar file is. It depends just on what current directory are you using with your terminal, when you start the jar file.
Paths.get("").toAbsolutePath().toString();
System.getProperty("user.dir");
If your Class
with main
would be called MainClass
, then try:
MainClass.class.getProtectionDomain().getCodeSource().getLocation().getFile();
This will return a String
with absolute path of the jar file.
*first html page*
<form action="display.jsp" >
<input type="text" name="serialNumber" />
<input type="submit" value="Submit" />
</form>
*Second html page*
<body>
<p>The serial number is:<%=request.getParameter("serialNumber") %></p>
</body>
you will get the value of the textbox on another page.