The solution I came up with is fragile; it relies on django's naming convention for foreign keys.

USE information_schema;
tee mysql_output
SELECT * FROM TABLE_CONSTRAINTS WHERE CONSTRAINT_TYPE = 'FOREIGN KEY' AND TABLE_SCHEMA = 'database_name';
notee

Then, in the shell,

grep 'refs_tablename_id' mysql_output

I too faced this error while importing an 8GB sql database file. Checked my mysql installation drive. There was no space left in the drive. So got some space by removing unwanted items and re-ran my database import command. This time it was successful.

If your cascading deletes nuke a product because it was a member of a category that was killed, then you've set up your foreign keys improperly. Given your example tables, you should have the following table setup:

CREATE TABLE categories (
    id int unsigned not null primary key,
    name VARCHAR(255) default null
)Engine=InnoDB;

CREATE TABLE products (
    id int unsigned not null primary key,
    name VARCHAR(255) default null
)Engine=InnoDB;

CREATE TABLE categories_products (
    category_id int unsigned not null,
    product_id int unsigned not null,
    PRIMARY KEY (category_id, product_id),
    KEY pkey (product_id),
    FOREIGN KEY (category_id) REFERENCES categories (id)
       ON DELETE CASCADE
       ON UPDATE CASCADE,
    FOREIGN KEY (product_id) REFERENCES products (id)
       ON DELETE CASCADE
       ON UPDATE CASCADE
)Engine=InnoDB;

This way, you can delete a product OR a category, and only the associated records in categories_products will die alongside. The cascade won't travel farther up the tree and delete the parent product/category table.

e.g.

products: boots, mittens, hats, coats
categories: red, green, blue, white, black

prod/cats: red boots, green mittens, red coats, black hats

If you delete the 'red' category, then only the 'red' entry in the categories table dies, as well as the two entries prod/cats: 'red boots' and 'red coats'.

The delete will not cascade any farther and will not take out the 'boots' and 'coats' categories.

comment followup:

you're still misunderstanding how cascaded deletes work. They only affect the tables in which the "on delete cascade" is defined. In this case, the cascade is set in the "categories_products" table. If you delete the 'red' category, the only records that will cascade delete in categories_products are those where category_id = red. It won't touch any records where 'category_id = blue', and it would not travel onwards to the "products" table, because there's no foreign key defined in that table.

Here's a more concrete example:

categories:     products:
+----+------+   +----+---------+
| id | name |   | id | name    |
+----+------+   +----+---------+
| 1  | red  |   | 1  | mittens |
| 2  | blue |   | 2  | boots   |
+---++------+   +----+---------+

products_categories:
+------------+-------------+
| product_id | category_id |
+------------+-------------+
| 1          | 1           | // red mittens
| 1          | 2           | // blue mittens
| 2          | 1           | // red boots
| 2          | 2           | // blue boots
+------------+-------------+

Let's say you delete category #2 (blue):

DELETE FROM categories WHERE (id = 2);

the DBMS will look at all the tables which have a foreign key pointing at the 'categories' table, and delete the records where the matching id is 2. Since we only defined the foreign key relationship in products_categories, you end up with this table once the delete completes:

+------------+-------------+
| product_id | category_id |
+------------+-------------+
| 1          | 1           | // red mittens
| 2          | 1           | // red boots
+------------+-------------+

There's no foreign key defined in the products table, so the cascade will not work there, so you've still got boots and mittens listed. There's just no 'blue boots' and no 'blue mittens' anymore.

From this answer,

execute:

  use `dbName`; --your db name here
  SET FOREIGN_KEY_CHECKS = 0; 
  SET @tables = NULL;
  SET GROUP_CONCAT_MAX_LEN=32768;

  SELECT GROUP_CONCAT('`', table_schema, '`.`', table_name, '`') INTO @tables
  FROM   information_schema.tables 
  WHERE  table_schema = (SELECT DATABASE());
  SELECT IFNULL(@tables, '') INTO @tables;

  SET        @tables = CONCAT('DROP TABLE IF EXISTS ', @tables);
  PREPARE    stmt FROM @tables;
  EXECUTE    stmt;
  DEALLOCATE PREPARE stmt;
  SET        FOREIGN_KEY_CHECKS = 1;

This drops tables from the database currently in use. You can set current database using use.

Or otherwise, Dion's accepted answer is simpler, except you need to execute it twice, first to get the query, and second to execute the query. I provided some silly back-ticks to escape special characters in db and table names.

  SELECT CONCAT('DROP TABLE IF EXISTS `', table_schema, '`.`', table_name, '`;')
  FROM   information_schema.tables
  WHERE  table_schema = 'dbName'; --your db name here

One line:

 mysql -u root -p dbName -e 
 "show table status where Engine='MyISAM';" | awk 
 'NR>1 {print "ALTER TABLE "$1" ENGINE = InnoDB;"}'  | 
  mysql -u root -p dbName

Here is what I ultimately had to do to figure out what "other query" caused the lock timeout problem. In the application code, we track all pending database calls on a separate thread dedicated to this task. If any DB call takes longer than N-seconds (for us it's 30 seconds) we log:

-- Pending InnoDB transactions
SELECT * FROM information_schema.innodb_trx ORDER BY trx_started; 

-- Optionally, log what transaction holds what locks
SELECT * FROM information_schema.innodb_locks;

With above, we were able to pinpoint concurrent queries that locked the rows causing the deadlock. In my case, they were statements like INSERT ... SELECT which unlike plain SELECTs lock the underlying rows. You can then reorganize the code or use a different transaction isolation like read uncommitted.

Good luck!

Adding to John P's answer,

For a linux system, steps 1-6 can be accomplished with these commands:

1. mysqldump -u [username] -p[root_password] [database_name] > dumpfilename.sql
2. mysqladmin -u [username] -p[root_password] drop [database_name]
3. sudo /etc/init.d/mysqld stop
4. sudo rm /var/lib/mysql/ibdata1
sudo rm /var/lib/mysql/ib_logfile*
5. sudo /etc/init.d/mysqld start
6. mysqladmin -u [username] -p[root_password] create [database_name]
7. mysql -u [username] -p[root_password] [database_name] < dumpfilename.sql

Warning: these instructions will cause you to lose other databases if you have other databases on this mysql instance. Make sure that steps 1,2 and 6,7 are modified to cover all databases you wish to keep.

MYISAM:

1. MYISAM supports Table-level Locking
2. MyISAM designed for need of speed
3. MyISAM does not support foreign keys hence we call MySQL with MYISAM is DBMS
4. MyISAM stores its tables, data and indexes in diskspace using separate three different files. (tablename.FRM, tablename.MYD, tablename.MYI)
5. MYISAM not supports transaction. You cannot commit and rollback with MYISAM. Once you issue a command it’s done.
6. MYISAM supports fulltext search
7. You can use MyISAM, if the table is more static with lots of select and less update and delete.

INNODB:

1. InnoDB supports Row-level Locking
2. InnoDB designed for maximum performance when processing high volume of data
3. InnoDB support foreign keys hence we call MySQL with InnoDB is RDBMS
4. InnoDB stores its tables and indexes in a tablespace
5. InnoDB supports transaction. You can commit and rollback with InnoDB

As was said you need to remove the FKs before. On Mysql do it like this:

ALTER TABLE `table_name` DROP FOREIGN KEY `id_name_fk`;

ALTER TABLE `table_name` DROP INDEX `id_name_fk`;

If you don't use innodb_file_per_table, reclaiming disk space is possible, but quite tedious, and requires a significant amount of downtime.

The How To is pretty in-depth - but I pasted the relevant part below.

Be sure to also retain a copy of your schema in your dump.

Currently, you cannot remove a data file from the system tablespace. To decrease the system tablespace size, use this procedure:

Use mysqldump to dump all your InnoDB tables.

Stop the server.

Remove all the existing tablespace files, including the ibdata and ib_log files. If you want to keep a backup copy of the information, then copy all the ib* files to another location before the removing the files in your MySQL installation.

Remove any .frm files for InnoDB tables.

Configure a new tablespace.

Restart the server.

Import the dump files.

Yet another way, perhaps the shortest to get status of a single or matched set of tables:

SHOW TABLE STATUS LIKE 'table';

You can then use LIKE operators for example:

SHOW TABLE STATUS LIKE 'field_data_%';

Here is the solution provided by MySQL: http://dev.mysql.com/doc/refman/5.5/en/forcing-innodb-recovery.html

try this. There are in general three ways to use mysqldump—

in order to dump a set of one or more tables,

shell> mysqldump [options] db_name [tbl_name ...]

a set of one or more complete databases

shell> mysqldump [options] --databases db_name ...

or an entire MySQL server—as shown here:

shell> mysqldump [options] --all-databases

in phpmyadmin you can easily rename the database

select database 

  goto operations tab

  in that rename Database to :

  type your new database name and click go

ask to drop old table and reload table data click OK in both

Your database is renamed

Rising to @Ankan-Zerob's challenge, this is my estimate of the maximum length which can be stored in each text type measured in words:

      Type |         Bytes | English words | Multi-byte words
-----------+---------------+---------------+-----------------
  TINYTEXT |           255 |           ±44 |              ±23
      TEXT |        65,535 |       ±11,000 |           ±5,900
MEDIUMTEXT |    16,777,215 |    ±2,800,000 |       ±1,500,000
  LONGTEXT | 4,294,967,295 |  ±740,000,000 |     ±380,000,000

In English, 4.8 letters per word is probably a good average (eg norvig.com/mayzner.html), though word lengths will vary according to domain (e.g. spoken language vs. academic papers), so there's no point being too precise. English is mostly single-byte ASCII characters, with very occasional multi-byte characters, so close to one-byte-per-letter. An extra character has to be allowed for inter-word spaces, so I've rounded down from 5.8 bytes per word. Languages with lots of accents such as say Polish would store slightly fewer words, as would e.g. German with longer words.

Languages requiring multi-byte characters such as Greek, Arabic, Hebrew, Hindi, Thai, etc, etc typically require two bytes per character in UTF-8. Guessing wildly at 5 letters per word, I've rounded down from 11 bytes per word.

CJK scripts (Hanzi, Kanji, Hiragana, Katakana, etc) I know nothing of; I believe characters mostly require 3 bytes in UTF-8, and (with massive simplification) they might be considered to use around 2 characters per word, so they would be somewhere between the other two. (CJK scripts are likely to require less storage using UTF-16, depending).

This is of course ignoring storage overheads etc.

For basic cleanup and re-analyzing you can run "OPTIMIZE TABLE ...", it will compact out the overhead in the indexes and run ANALYZE TABLE too, but it's not going to re-sort them and make them as small & efficient as they could be.

https://dev.mysql.com/doc/refman/8.0/en/optimize-table.html

However, if you want the indexes completely rebuilt for best performance, you can:

1. drop / re-add indexes (obviously)
2. dump / reload the table
3. ALTER TABLE and "change" using the same storage engine
4. REPAIR TABLE (only works for MyISAM, ARCHIVE, and CSV)

https://dev.mysql.com/doc/refman/8.0/en/rebuilding-tables.html

If you do an ALTER TABLE on a field (that is part of an index) and change its type, then it will also fully rebuild the related index(es).

The InnoDB engine does not store deleted data. As you insert and delete rows, unused space is left allocated within the InnoDB storage files. Over time, the overall space will not decrease, but over time the 'deleted and freed' space will be automatically reused by the DB server.

You can further tune and manage the space used by the engine through an manual re-org of the tables. To do this, dump the data in the affected tables using mysqldump, drop the tables, restart the mysql service, and then recreate the tables from the dump files.

It's not about performance. It's about what makes a good primary key. Unique and unchanging over time. You may think an entity such as a country code never changes over time and would be a good candidate for a primary key. But bitter experience is that is seldom so.

INT AUTO_INCREMENT meets the "unique and unchanging over time" condition. Hence the preference.

I've just had this problem with MariaDB/InnoDB and was able to fix it by

• create the required table in the correct database in another MySQL/MariaDB instance
• stop both servers
• copy .ibd, .frm files to original server
• start both servers
• drop problem table on both servers

In my case (Oracle), it's WHERE REGEXP_LIKE(column, 'regex.*'). See here:

SQL Function

Description

---

REGEXP_LIKE

This function searches a character column for a pattern. Use this function in the WHERE clause of a query to return rows matching the regular expression you specify.

...

REGEXP_REPLACE

This function searches for a pattern in a character column and replaces each occurrence of that pattern with the pattern you specify.

...

REGEXP_INSTR

This function searches a string for a given occurrence of a regular expression pattern. You specify which occurrence you want to find and the start position to search from. This function returns an integer indicating the position in the string where the match is found.

...

REGEXP_SUBSTR

This function returns the actual substring matching the regular expression pattern you specify.

(Of course, REGEXP_LIKE only matches queries containing the search string, so if you want a complete match, you'll have to use '^$' for a beginning (^) and end ($) match, e.g.: '^regex.*$'.)

hopefully its work

SET foreign_key_checks = 0; DROP TABLE table name; SET foreign_key_checks = 1;

InnoDB has transaction support, you're not using explicit transactions so innoDB has to do a commit after each statement ("performs a log flush to disk for every insert").

Execute this command before your loop:

START TRANSACTION

and this after you loop

COMMIT

I had to put the statement under the [mysqld] block to make it work. Otherwise the change was not reflected. I have a REL distribution.

A bit late to the game...but here's a quite comprehensive post I wrote a few months back, detailing the major differences between MYISAM and InnoDB. Grab a cuppa (and maybe a biscuit), and enjoy.

The major difference between MyISAM and InnoDB is in referential integrity and transactions. There are also other difference such as locking, rollbacks, and full-text searches.

Referential Integrity

Referential integrity ensures that relationships between tables remains consistent. More specifically, this means when a table (e.g. Listings) has a foreign key (e.g. Product ID) pointing to a different table (e.g. Products), when updates or deletes occur to the pointed-to table, these changes are cascaded to the linking table. In our example, if a product is renamed, the linking table’s foreign keys will also update; if a product is deleted from the ‘Products’ table, any listings which point to the deleted entry will also be deleted. Furthermore, any new listing must have that foreign key pointing to a valid, existing entry.

InnoDB is a relational DBMS (RDBMS) and thus has referential integrity, while MyISAM does not.

Transactions & Atomicity

Data in a table is managed using Data Manipulation Language (DML) statements, such as SELECT, INSERT, UPDATE and DELETE. A transaction group two or more DML statements together into a single unit of work, so either the entire unit is applied, or none of it is.

MyISAM do not support transactions whereas InnoDB does.

If an operation is interrupted while using a MyISAM table, the operation is aborted immediately, and the rows (or even data within each row) that are affected remains affected, even if the operation did not go to completion.

If an operation is interrupted while using an InnoDB table, because it using transactions, which has atomicity, any transaction which did not go to completion will not take effect, since no commit is made.

Table-locking vs Row-locking

When a query runs against a MyISAM table, the entire table in which it is querying will be locked. This means subsequent queries will only be executed after the current one is finished. If you are reading a large table, and/or there are frequent read and write operations, this can mean a huge backlog of queries.

When a query runs against an InnoDB table, only the row(s) which are involved are locked, the rest of the table remains available for CRUD operations. This means queries can run simultaneously on the same table, provided they do not use the same row.

This feature in InnoDB is known as concurrency. As great as concurrency is, there is a major drawback that applies to a select range of tables, in that there is an overhead in switching between kernel threads, and you should set a limit on the kernel threads to prevent the server coming to a halt.

Transactions & Rollbacks

When you run an operation in MyISAM, the changes are set; in InnoDB, those changes can be rolled back. The most common commands used to control transactions are COMMIT, ROLLBACK and SAVEPOINT. 1. COMMIT - you can write multiple DML operations, but the changes will only be saved when a COMMIT is made 2. ROLLBACK - you can discard any operations that have not yet been committed yet 3. SAVEPOINT - sets a point in the list of operations to which a ROLLBACK operation can rollback to

Reliability

MyISAM offers no data integrity - Hardware failures, unclean shutdowns and canceled operations can cause the data to become corrupt. This would require full repair or rebuilds of the indexes and tables.

InnoDB, on the other hand, uses a transactional log, a double-write buffer and automatic checksumming and validation to prevent corruption. Before InnoDB makes any changes, it records the data before the transactions into a system tablespace file called ibdata1. If there is a crash, InnoDB would autorecover through the replay of those logs.

FULLTEXT Indexing

InnoDB does not support FULLTEXT indexing until MySQL version 5.6.4. As of the writing of this post, many shared hosting providers’ MySQL version is still below 5.6.4, which means FULLTEXT indexing is not supported for InnoDB tables.

However, this is not a valid reason to use MyISAM. It’s best to change to a hosting provider that supports up-to-date versions of MySQL. Not that a MyISAM table that uses FULLTEXT indexing cannot be converted to an InnoDB table.

Conclusion

In conclusion, InnoDB should be your default storage engine of choice. Choose MyISAM or other data types when they serve a specific need.

Obviously, the standard library provided operator does not know what to do with your user defined type mystruct. It only works for predefined data types. To be able to use it for your own data type, You need to overload operator << to take your user defined data type.

According to jsPerf: Last item method, the most performant method is array[array.length-1]. The graph is displaying operations per second, not time per operation.

It is common (but wrong) for developers to think the performance of a single operation matters. It does not. Performance only matters when you're doing LOTS of the same operation. In that case, using a static value (length) to access a specific index (length-1) is fastest, and it's not even close.

You need to put the last() indexing on the nodelist result, rather than as part of the selection criteria. Try:

(//element[@name='D'])[last()]

Find all IntelliJ (v15) symbols over here: https://www.jetbrains.com/idea/help/symbols.html

This site states that this icon stands for "Java class located out of the source root. Refer to the section Configuring Content Roots for details."

By reading online (tables tutorial) it seems tables behave like arrays so you're looking for:

Way1

names = {'John', 'Joe', 'Steve'}
for i = 1,3 do print( names[i] ) end

Way2

names = {'John', 'Joe', 'Steve'}
for k,v in pairs(names) do print(v) end

Way1 uses the table index/key , on your table names each element has a key starting from 1, for example:

names = {'John', 'Joe', 'Steve'}
print( names[1] ) -- prints John

So you just make i go from 1 to 3.

On Way2 instead you specify what table you want to run and assign a variable for its key and value for example:

names = {'John', 'Joe', myKey="myValue" }
for k,v in pairs(names) do print(k,v) end

prints the following:

1   John
2   Joe
myKey   myValue

I used the answer from Jonathan to google inserting images into LaTeX and if you would like to insert an image named image1.jpg and have it centered, your code might look like this in Rmarkdown

\begin{center}
\includegraphics{image1}
\end{center}

Keep in mind that LaTex is not asking for the file exention (.jpg). This question helped me get my answer. Thanks.

First, you should know what an Optional value is. You can step to The Swift Programming Language for detail.

Second, you should know the optional value has two statuses. One is the full value, and the other is a nil value. So before you implement an optional value, you should check which state it is.

You can use if let ... or guard let ... else and so on.

One other way, if you don't want to check the variable state before your implementation, you can also use var buildingName = buildingName ?? "buildingName" instead.

A different approach than the one Ed Marty did:

#import <QuartzCore/QuartzCore.h>

[v.layer setCornerRadius:25.0f];
[v.layer setMasksToBounds:YES];

You need the setMasksToBounds for it to load all the objects from IB... i got a problem where my view got rounded, but did not have the objects from IB :/

this fixed it =D hope it helps!

In Lua 5.2 the best workaround is to use goto:

-- prints odd numbers in [|1,10|]
for i=1,10 do
  if i % 2 == 0 then goto continue end
  print(i)
  ::continue::
end

This is supported in LuaJIT since version 2.0.1

a very common try_files line which can be applied on your condition is

location / {
    try_files $uri $uri/ /test/index.html;
}

you probably understand the first part, location / matches all locations, unless it's matched by a more specific location, like location /test for example

The second part ( the try_files ) means when you receive a URI that's matched by this block try $uri first, for example http://example.com/images/image.jpg nginx will try to check if there's a file inside /images called image.jpg if found it will serve it first.

Second condition is $uri/ which means if you didn't find the first condition $uri try the URI as a directory, for example http://example.com/images/, ngixn will first check if a file called images exists then it wont find it, then goes to second check $uri/ and see if there's a directory called images exists then it will try serving it.

Side note: if you don't have autoindex on you'll probably get a 403 forbidden error, because directory listing is forbidden by default.

EDIT: I forgot to mention that if you have index defined, nginx will try to check if the index exists inside this folder before trying directory listing.

Third condition /test/index.html is considered a fall back option, (you need to use at least 2 options, one and a fall back), you can use as much as you can (never read of a constriction before), nginx will look for the file index.html inside the folder test and serve it if it exists.

If the third condition fails too, then nginx will serve the 404 error page.

Also there's something called named locations, like this

location @error {
}

You can call it with try_files like this

try_files $uri $uri/ @error;

TIP: If you only have 1 condition you want to serve, like for example inside folder images you only want to either serve the image or go to 404 error, you can write a line like this

location /images {
    try_files $uri =404;
}

which means either serve the file or serve a 404 error, you can't use only $uri by it self without =404 because you need to have a fallback option.
You can also choose which ever error code you want, like for example:

location /images {
    try_files $uri =403;
}

This will show a forbidden error if the image doesn't exist, or if you use 500 it will show server error, etc ..

If you want to stay within the standard library, you can subclass urllib2.Request:

import urllib2

class RequestWithMethod(urllib2.Request):
    def __init__(self, *args, **kwargs):
        self._method = kwargs.pop('method', None)
        urllib2.Request.__init__(self, *args, **kwargs)

    def get_method(self):
        return self._method if self._method else super(RequestWithMethod, self).get_method()


def put_request(url, data):
    opener = urllib2.build_opener(urllib2.HTTPHandler)
    request = RequestWithMethod(url, method='PUT', data=data)
    return opener.open(request)

It could be that one or two of your columns may have a factor in them, or what is more likely is that your columns may be formatted as factors. Please would you give str(col1) and str(col2) a try? That should tell you what format those columns are in.

I am unsure if you're trying to add the rows of a column to produce a new column or simply all of the numbers in both columns to get a single number.

You can also use Tab Layout with custom tab view to achieve this.

custom_tab.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:background="?attr/selectableItemBackground"
    android:gravity="center"
    android:orientation="vertical"
    android:paddingBottom="10dp"
    android:paddingTop="8dp">

    <ImageView
        android:id="@+id/icon"
        android:layout_width="24dp"
        android:layout_height="24dp"
        android:scaleType="centerInside"
        android:src="@drawable/ic_recents_selector" />

    <TextView
        android:id="@+id/title"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:ellipsize="end"
        android:maxLines="1"
        android:textAllCaps="false"
        android:textColor="@color/tab_color"
        android:textSize="12sp"/>
</LinearLayout>

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <android.support.v4.view.ViewPager

        android:id="@+id/view_pager"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1" />

    <android.support.design.widget.TabLayout
        android:id="@+id/tab_layout"
        style="@style/AppTabLayout"
        android:layout_width="match_parent"
        android:layout_height="56dp"
        android:background="?attr/colorPrimary" />

</LinearLayout>

MainActivity.java

public class MainActivity extends AppCompatActivity {
    private TabLayout mTabLayout;

    private int[] mTabsIcons = {
            R.drawable.ic_recents_selector,
            R.drawable.ic_favorite_selector,
            R.drawable.ic_place_selector};


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        // Setup the viewPager
        ViewPager viewPager = (ViewPager) findViewById(R.id.view_pager);
        MyPagerAdapter pagerAdapter = new MyPagerAdapter(getSupportFragmentManager());
        viewPager.setAdapter(pagerAdapter);

        mTabLayout = (TabLayout) findViewById(R.id.tab_layout);
        mTabLayout.setupWithViewPager(viewPager);

        for (int i = 0; i < mTabLayout.getTabCount(); i++) {
            TabLayout.Tab tab = mTabLayout.getTabAt(i);
            tab.setCustomView(pagerAdapter.getTabView(i));
        }

        mTabLayout.getTabAt(0).getCustomView().setSelected(true);
    }


    private class MyPagerAdapter extends FragmentPagerAdapter {

        public final int PAGE_COUNT = 3;

        private final String[] mTabsTitle = {"Recents", "Favorites", "Nearby"};

        public MyPagerAdapter(FragmentManager fm) {
            super(fm);
        }

        public View getTabView(int position) {
            // Given you have a custom layout in `res/layout/custom_tab.xml` with a TextView and ImageView
            View view = LayoutInflater.from(MainActivity.this).inflate(R.layout.custom_tab, null);
            TextView title = (TextView) view.findViewById(R.id.title);
            title.setText(mTabsTitle[position]);
            ImageView icon = (ImageView) view.findViewById(R.id.icon);
            icon.setImageResource(mTabsIcons[position]);
            return view;
        }

        @Override
        public Fragment getItem(int pos) {
            switch (pos) {

                case 0:
                    return PageFragment.newInstance(1);

                case 1:
                    return PageFragment.newInstance(2);
                case 2:
                    return PageFragment.newInstance(3);

            }
            return null;
        }

        @Override
        public int getCount() {
            return PAGE_COUNT;
        }

        @Override
        public CharSequence getPageTitle(int position) {
            return mTabsTitle[position];
        }
    }

}

Download Complete Sample Project

Use Method to Serialize and Deserialize Collection object from memory. This works on Collection Data Types. This Method will Serialize collection of any type to a byte stream. Create a Seperate Class SerilizeDeserialize and add following two methods:

public class SerilizeDeserialize
{

    // Serialize collection of any type to a byte stream

    public static byte[] Serialize<T>(T obj)
    {
        using (MemoryStream memStream = new MemoryStream())
        {
            BinaryFormatter binSerializer = new BinaryFormatter();
            binSerializer.Serialize(memStream, obj);
            return memStream.ToArray();
        }
    }

    // DSerialize collection of any type to a byte stream

    public static T Deserialize<T>(byte[] serializedObj)
    {
        T obj = default(T);
        using (MemoryStream memStream = new MemoryStream(serializedObj))
        {
            BinaryFormatter binSerializer = new BinaryFormatter();
            obj = (T)binSerializer.Deserialize(memStream);
        }
        return obj;
    }

}

How To use these method in your Class:

ArrayList arrayListMem = new ArrayList() { "One", "Two", "Three", "Four", "Five", "Six", "Seven" };
Console.WriteLine("Serializing to Memory : arrayListMem");
byte[] stream = SerilizeDeserialize.Serialize(arrayListMem);

ArrayList arrayListMemDes = new ArrayList();

arrayListMemDes = SerilizeDeserialize.Deserialize<ArrayList>(stream);

Console.WriteLine("DSerializing From Memory : arrayListMemDes");
foreach (var item in arrayListMemDes)
{
    Console.WriteLine(item);
}

A slight variation of the nice @liangli's solution that does not require to change the index of existing dataframes:

newdf = df1.drop(df1.join(df2.set_index('Name').index))

First you should install binary:

On Linux

sudo apt-get update
sudo apt-get install libleptonica-dev 
sudo apt-get install tesseract-ocr tesseract-ocr-dev
sudo apt-get install libtesseract-dev

On Mac

brew install tesseract

On Windows

download binary from https://github.com/UB-Mannheim/tesseract/wiki. then add pytesseract.pytesseract.tesseract_cmd = 'C:\Program Files (x86)\Tesseract-OCR\tesseract.exe' to your script.

Then you should install python package using pip:

pip install tesseract
pip install tesseract-ocr

references: https://pypi.org/project/pytesseract/ (INSTALLATION section) and https://github.com/tesseract-ocr/tesseract/wiki#installation

From the manual:

-N or --LINE-NUMBERS Causes a line number to be displayed at the beginning of each line in the display.

You can also toggle line numbers without quitting less by typing -N.

It is possible to toggle any of less's command line options in this way.

Your question seems to be solved, but ...

I'm not sure if you take the right solution for your problem.
I suppose you try to compress each day the actual project code.

It's possible with ZIP and 1980 this was a good solution, but today you should use a repository system, like subversion or git or ..., but not a zip-file.

Ok, perhaps it could be that I'm wrong.

This is an old question, and the answers already given all work, but there's also a new option which can be considered.

If you're using SourceTree to manage your git repositories, you can right-click on any commit and add a tag to it. With another mouseclick you can also send the tag straight to the branch on origin.

Use target="_top" attribute in anchor tag that will really work.

JasperReports if you're writing Java.

git push --all

is the canonical way to push everything to a new bare repository.

Another way to do the same thing is to create your new, non-bare repository and then make a bare clone with

git clone --bare

then use

git remote add origin <new-remote-repo>

in the original (non-bare) repository.

Another way to get access to array.index(of: Any) is by declaring your object

import Foundation
class Model: NSObject {  }

Try:

if start not in graph:

For more info see ProgrammerSought

import numpy as np   
>>> np.shape(a)
(2,2)

Also works if the input is not a numpy array but a list of lists

>>> a = [[1,2],[1,2]]
>>> np.shape(a)
(2,2)

Or a tuple of tuples

>>> a = ((1,2),(1,2))
>>> np.shape(a)
(2,2)

You can use conda remove --force.

The documentation says:

--force               Forces removal of a package without removing packages
                      that depend on it. Using this option will usually
                      leave your environment in a broken and inconsistent
                      state

for (Int32 i = 1; i < dt_pattern.Rows.Count - 1; i++){ double yATmax = ToDouble(dt_pattern.Rows[i]["Ampl"].ToString()) + AT; }

if you want to get around the + 1 issue

hashMap.keySet().toArray(); // returns an array of keys
hashMap.values().toArray(); // returns an array of values

Edit

It should be noted that the ordering of both arrays may not be the same, See oxbow_lakes answer for a better approach for iteration when the pair key/values are needed.

The Xcode Documentation has a wealth of knowledge and sample apps - check the Location Awareness Programming Guide.

The LocateMe sample project illustrates the effects of modifying the CLLocationManager's different accuracy settings

The library called, Matrix supports so many features including mathematics operations, dumping and logging features, associative containers, multiple dimensions and etc.

Usage

its usage is similar to c++ arrays.

Matrix<int> A(1, 2);
Matrix<int> B(2, 3);
Matrix<int> result(1, 3);

A[0][0] = 7;
A[0][1] = 10;

B[0][0] = 1;
B[0][1] = 4;
B[0][2] = 2;
B[1][0] = 1;
B[1][1] = 2;
B[1][2] = 100;

result = A * B;

result.dump.matrix();

Result:

Matrix view:
-            -
| 17 48 1014 |
-            -

Here is the documentation and Github page.

Refering to ?: Operator (C# Reference)

The conditional operator (?:) returns one of two values depending on the value of a Boolean expression. Following is the syntax for the conditional operator.

Refering to ?? Operator (C# Reference)

The ?? operator is called the null-coalescing operator and is used to define a default value for a nullable value types as well as reference types. It returns the left-hand operand if it is not null; otherwise it returns the right operand.

That means:

[Part 1]

return source ?? String.Empty;

[Part 2] is not applicable ...

Android support library update

As of Android Oreo, the support library only goes down to API 14. Most newer apps probably also have a min API of 14, and thus don't need to worry about the issues with API 11 mentioned in some of the other answers. A lot of the code can be cleaned up. (But see my edit history if you are still supporting lower versions.)

Copy

ClipboardManager clipboard = (ClipboardManager) getSystemService(Context.CLIPBOARD_SERVICE);
ClipData clip = ClipData.newPlainText("label", selectedText);
if (clipboard == null || clip == null) return;
clipboard.setPrimaryClip(clip);

Paste

I'm adding this code as a bonus, because copy/paste is usually done in pairs.

ClipboardManager clipboard = (ClipboardManager) getSystemService(Context.CLIPBOARD_SERVICE);
try {
    CharSequence text = clipboard.getPrimaryClip().getItemAt(0).getText();
} catch (Exception e) {
    return;
}

Notes

• Be sure to import the android.content.ClipboardManager version rather than the old android.text.ClipboardManager. Same for ClipData.
• If you aren't in an activity you can get the service with context.getSystemService().
• I used a try/catch block for getting the paste text because multiple things can be null. You can check each one if you find that way more readable.

this worked like magic for me

RewriteCond %{HTTP_HOST} ^sitename.com [NC] RewriteRule ^(.*)$ https://www.sitename.com/$1 [L,R=301,NC]

You can try the killall command:

killall python

Just add these lines to your <script> (somewhere after jQuery is loaded but before posting anything):

$.postJSON = function(url, data, func)
{
    $.post(url, data, func, 'json');
}

Replace (some/all) $.getJSON with $.postJSON and enjoy!

You can use the same Javascript callback functions as with $.getJSON. No server-side change is needed. (Well, I always recommend using $_REQUEST in PHP. http://php.net/manual/en/reserved.variables.request.php, Among $_REQUEST, $_GET and $_POST which one is the fastest?)

This is simpler than @lepe's solution.

The simplest is to call stop propagation on an event handler. $event works the same in Angular 2, and contains the ongoing event (by it a mouse click, mouse event, etc.):

(click)="onEvent($event)"

on the event handler, we can there stop the propagation:

onEvent(event) {
   event.stopPropagation();
}

Disclaimer: use a parser if you have the option. That said...

This is the regex I use (!) to match HTML tags:

<(?:"[^"]*"['"]*|'[^']*'['"]*|[^'">])+>

It may not be perfect, but I ran this code through a lot of HTML. Note that it even catches strange things like <a name="badgenerator"">, which show up on the web.

I guess to make it not match self contained tags, you'd either want to use Kobi's negative look-behind:

<(?:"[^"]*"['"]*|'[^']*'['"]*|[^'">])+(?<!/\s*)>

or just combine if and if not.

To downvoters: This is working code from an actual product. I doubt anyone reading this page will get the impression that it is socially acceptable to use regexes on HTML.

Caveat: I should note that this regex still breaks down in the presence of CDATA blocks, comments, and script and style elements. Good news is, you can get rid of those using a regex...

In Chrome, go to options (Customize and Control, the 3 dots/bars at top right) ---> More Tools ---> save page as

save page as  
filename     : any_name.html 
save as type : webpage complete.

Then you will get any_name.html and any_name folder.

An unsigned char is an unsigned byte value (0 to 255). You may be thinking of char in terms of being a "character" but it is really a numerical value. The regular char is signed, so you have 128 values, and these values map to characters using ASCII encoding. But in either case, what you are storing in memory is a byte value.

You can also make it a reusable method by expending JavaScript:

Array.prototype.findIndexBy = function(key, value) {
    return this.findIndex(item => item[key] === value)
}

const peoples = [{name: 'john'}]
const cats = [{id: 1, name: 'kitty'}]

peoples.findIndexBy('name', 'john')
cats.findIndexBy('id', 1)

I think you are converting the data a bit more than you need to. Once you create the buffer with the proper encoding, you just need to write the buffer to the file.

var base64Data = req.rawBody.replace(/^data:image\/png;base64,/, "");

require("fs").writeFile("out.png", base64Data, 'base64', function(err) {
  console.log(err);
});

new Buffer(..., 'base64') will convert the input string to a Buffer, which is just an array of bytes, by interpreting the input as a base64 encoded string. Then you can just write that byte array to the file.

Update

As mentioned in the comments, req.rawBody is no longer a thing. If you are using express/connect then you should use the bodyParser() middleware and use req.body, and if you are doing this using standard Node then you need to aggregate the incoming data event Buffer objects and do this image data parsing in the end callback.

Sounds like you're working in just one table so something like this:

update your_table
set B = A
where B is null

It's simple with open source 7zip SFX-Packager - easy way to just "Drag & drop" folders onto it, and it creates a portable/self-extracting package.

Add ScalarsConverterFactory to retrofit:

in gradle:

implementation'com.squareup.retrofit2:converter-scalars:2.5.0'

your retrofit:

retrofit = new Retrofit.Builder()
            .baseUrl(WEB_DOMAIN_MAIN)
            .addConverterFactory(ScalarsConverterFactory.create())
            .addConverterFactory(GsonConverterFactory.create(gson))
            .build();

change your call interface @Body parameter to String, don't forget to add @Headers("Content-Type: application/json"):

@Headers("Content-Type: application/json")
@POST("/api/getUsers")
Call<List<Users>> getUsers(@Body String rawJsonString);

now you can post raw json.

Try this

package main

import "fmt"
import "strconv"

func FloatToString(input_num float64) string {
    // to convert a float number to a string
    return strconv.FormatFloat(input_num, 'f', 6, 64)
}

func main() {
    fmt.Println(FloatToString(21312421.213123))
}

If you just want as many digits precision as possible, then the special precision -1 uses the smallest number of digits necessary such that ParseFloat will return f exactly. Eg

strconv.FormatFloat(input_num, 'f', -1, 64)

Personally I find fmt easier to use. (Playground link)

fmt.Printf("x = %.6f\n", 21312421.213123)

Or if you just want to convert the string

fmt.Sprintf("%.6f", 21312421.213123)

Try below code if you want to use php loop to display

<span>
  <select name="birth_month">
    <?php for( $m=1; $m<=12; ++$m ) { 
      $month_label = date('F', mktime(0, 0, 0, $m, 1));
    ?>
      <option value="<?php echo $month_label; ?>"><?php echo $month_label; ?></option>
    <?php } ?>
  </select> 
</span>
<span>
  <select name="birth_day">
    <?php 
      $start_date = 1;
      $end_date   = 31;
      for( $j=$start_date; $j<=$end_date; $j++ ) {
        echo '<option value='.$j.'>'.$j.'</option>';
      }
    ?>
  </select>
</span>
<span>
  <select name="birth_year">
    <?php 
      $year = date('Y');
      $min = $year - 60;
      $max = $year;
      for( $i=$max; $i>=$min; $i-- ) {
        echo '<option value='.$i.'>'.$i.'</option>';
      }
    ?>
  </select>
</span>

I've found solution here. In my case element becomes inaccessible in case of leaving current window, tab or page and coming back again.

.ignoring(StaleElement...), .refreshed(...) and elementToBeClicable(...) did not help and I was getting exception on act.doubleClick(element).build().perform(); string.

Using function in my main test class:

openForm(someXpath);

My BaseTest function:

int defaultTime = 15;

boolean openForm(String myXpath) throws Exception {
    int count = 0;
    boolean clicked = false;
    while (count < 4 || !clicked) {
        try {
            WebElement element = getWebElClickable(myXpath,defaultTime);
            act.doubleClick(element).build().perform();
            clicked = true;
            print("Element have been clicked!");
            break;
        } catch (StaleElementReferenceException sere) {
            sere.toString();
            print("Trying to recover from: "+sere.getMessage());
            count=count+1;
        }
    }

My BaseClass function:

protected WebElement getWebElClickable(String xpath, int waitSeconds) {
        wait = new WebDriverWait(driver, waitSeconds);
        return wait.ignoring(StaleElementReferenceException.class).until(
                ExpectedConditions.refreshed(ExpectedConditions.elementToBeClickable(By.xpath(xpath))));
    }

When the Resolve Conflicts->Content Menu are disabled, one may be on the Pending files list. We need to select the Conflicted files option from the drop down (top)

hope it helps

You can determine whether a specified file exists using the Exists method of the File class in the System.IO namespace:

bool System.IO.File.Exists(string path)

You can find the documentation here on MSDN.

Example:

using System;
using System.IO;

class Test
{
    public static void Main()
    {
        string resumeFile = @"c:\ResumesArchive\923823.txt";
        string newFile = @"c:\ResumesImport\newResume.txt";
        if (File.Exists(resumeFile))
        {
            File.Copy(resumeFile, newFile);
        }
        else
        {
            Console.WriteLine("Resume file does not exist.");
        }
    }
}

For the modification, you could use tag.text from xml. Here is snippet:

import xml.etree.ElementTree as ET

tree = ET.parse('country_data.xml')
root = tree.getroot()

for rank in root.iter('rank'):
    new_rank = int(rank.text) + 1
    rank.text = str(new_rank)
    
tree.write('output.xml')

The rank in the code is example of tag, which depending on your XML file contents.

Use the -ss option:

ffmpeg -ss 01:23:45 -i input -vframes 1 -q:v 2 output.jpg

• For JPEG output use -q:v to control output quality. Full range is a linear scale of 1-31 where a lower value results in a higher quality. 2-5 is a good range to try.

• The select filter provides an alternative method for more complex needs such as selecting only certain frame types, or 1 per 100, etc.

• Placing -ss before the input will be faster. See FFmpeg Wiki: Seeking and this excerpt from the ffmpeg cli tool documentation:

-ss position (input/output)

When used as an input option (before -i), seeks in this input file to position. Note the in most formats it is not possible to seek exactly, so ffmpeg will seek to the closest seek point before position. When transcoding and -accurate_seek is enabled (the default), this extra segment between the seek point and position will be decoded and discarded. When doing stream copy or when -noaccurate_seek is used, it will be preserved.

When used as an output option (before an output filename), decodes but discards input until the timestamps reach position.

position may be either in seconds or in hh:mm:ss[.xxx] form.

[Belmiro@HP-550 ~]$ uname -a

Linux HP-550 2.6.30.10-105.2.23.fc11.x86_64 #1 SMP Thu Feb 11 07:06:34 UTC 2010
x86_64 x86_64 x86_64 GNU/Linux


[Belmiro@HP-550 ~]$ lsb_release -a

LSB Version: :core-3.1-amd64:core-3.1-noarch:core-3.2-amd64:core-3.2-noarch:deskt
op-3.1-amd64:desktop-3.1-noarch:desktop-3.2-amd64:desktop-3.2-noarch
Distributor ID: Fedora
Description: Fedora release 11 (Leonidas)
Release: 11
Codename: Leonidas
[Belmiro@HP-550 ~]$ 

IntPtr GetIntPtr(Byte[] byteBuf)
{
    IntPtr ptr = Marshal.AllocHGlobal(byteBuf.Length);
    for (int i = 0; i < byteBuf.Length; i++)
    {
       Marshal.WriteByte(ptr, i, byteBuf[i]);
    }
    return ptr;
}

Even below will install curl

cd c:\cygwin setup.exe -q -P curl

with assuming below setting in .config file:

<configuration>
   <appSettings>
     <add key="PFUserName" value="myusername"/>
     <add key="PFPassWord" value="mypassword"/>
   </appSettings> 
</configuration>

try this:

public class myController : Controller
{
    NameValueCollection myKeys = ConfigurationManager.AppSettings;

    public void MyMethod()
    {
        var myUsername = myKeys["PFUserName"];
        var myPassword = myKeys["PFPassWord"];
    }
}

Both commands are correct :

mvn clean install -Pdev1
mvn clean install -P dev1

The problem is most likely not profile activation, but the profile not accomplishing what you expect it to.

It is normal that the command :

mvn help:active-profiles

does not display the profile, because is does not contain -Pdev1. You could add it to make the profile appear, but it would be pointless because you would be testing maven itself.

What you should do is check the profile behavior by doing the following :

1. set activeByDefault to true in the profile configuration,
2. run mvn help:active-profiles (to make sure it is effectively activated even without -Pdev1),
3. run mvn install.

It should give the same results as before, and therefore confirm that the problem is the profile not doing what you expect.

You can install multiple Java runtimes under Windows (including Windows 7) as long as each is in their own directory.

For example, if you are running Win 7 64-bit, or Win Server 2008 R2, you may install 32-bit JRE in "C:\Program Files (x86)\Java\jre6" and 64-bit JRE in "C:\Program Files\Java\jre6", and perhaps IBM Java 6 in "C:\Program Files (x86)\IBM\Java60\jre".

The Java Control Panel app theoretically has the ability to manage multiple runtimes: Java tab >> View... button

There are tabs for User and System settings. You can add additional runtimes with Add or Find, but once you have finished adding runtimes and hit OK, you have to hit Apply in the main Java tab frame, which is not as obvious as it could be - otherwise your changes will be lost.

If you have multiple versions installed, only the main version will auto-update. I have not found a solution to this apart from the weak workaround of manually updating whenever I see an auto-update, so I'd love to know if anyone has a fix for that.

Most Java IDEs allow you to select any Java runtime on your machine to build against, but if not using an IDE, you can easily manage this using environment variables in a cmd window. Your PATH and the JAVA_HOME variable determine which runtime is used by tools run from the shell. Set the JAVA_HOME to the jre directory you want and put the bin directory into your path (and remove references to other runtimes) - with IBM you may need to add multiple bin directories. This is pretty much all the set up that the default system Java does. You can also set CLASSPATH, ANT_HOME, MAVEN_HOME, etc. to unique values to match your runtime.

Here is a more involved example of where extends is allowed and possibly what you want:

public class A<T1 extends Comparable<T1>>

I simply used background-image css property on the target background div.
Note background-image only accepts gradient color functions.
So I used linear-gradient adding the same desired overlay color twice (use last rgba value to control color opacity).

Also, found these two useful resources to:

1. Add text (or div with any other content) over the background image: Hero Image
2. Blur background image only, without blurring the div on top: Blurred Background Image

HTML

<div class="header_div">
</div>

<div class="header_text">
  <h1>Header Text</h1>
</div>

CSS

.header_div {
  position: relative;
  text-align: cover;
  min-height: 90vh;
  margin-top: 5vh;
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  width: 100vw;
  background-image: linear-gradient(rgba(38, 32, 96, 0.2), rgba(38, 32, 96, 0.4)), url("images\\header img2.jpg");
  filter: blur(2px);
}

.header_text {
  position: absolute;
  top: 50%;
  right: 50%;
  transform: translate(50%, -50%);
}

By typing 'jupyter notebook --NotebookApp.iopub_data_rate_limit=1.0e10' in Anaconda PowerShell or prompt, the Jupyter notebook will open with the new configuration. Try now to run your query.

<div class="outer">
    <div class="inner">
        <img src="http://1.bp.blogspot.com/_74so2YIdYpM/TEd09Hqrm6I/AAAAAAAAApY/rwGCm5_Tawg/s320/tall+copy.jpg" alt="tall image" />
    </div>
</div>
<hr />
<div class="outer">
    <div class="inner">
        <img src="http://www.5150studios.com.au/wp-content/uploads/2012/04/wide.jpg" alt="wide image" />
    </div>
</div>

CSS

img
{
    max-width: 100%;
    max-height: 100%;
    display: block;
    margin: auto auto;
}

.outer
{
    border: 1px solid #888;
    width: 100px;
    height: 100px;
}

.inner
{
    display:table-cell;
    height: 100px;
    width: 100px;
    vertical-align: middle;
}

The error message means that it cannot locate your python executable or binary.

In many cases, it's installed at c:\python27. if it's not installed yet, you can install it with npm install --global windows-build-tools, which will only work if it hasn't been installed yet.

Adding it to the environment variables does not always work. A better alternative, is to just set it in the npm config.

npm config set python c:\python27\python.exe

You need to pass your components as children, like this:

var App = require('./App.js');
var SampleComponent = require('./SampleComponent.js');
ReactDOM.render(
    <App>
        <SampleComponent name="SomeName"/> 
    <App>, 
    document.body
);

And then append them in the component's body:

var App = React.createClass({
    render: function() {
        return (
            <div>
                <h1>App main component! </h1>
                {
                    this.props.children
                }
            </div>
        );
    }
});

You don't need to manually manipulate HTML code, React will do that for you. If you want to add some child components, you just need to change props or state it depends. For example:

var App = React.createClass({

    getInitialState: function(){
        return [
            {id:1,name:"Some Name"}
        ]
    },

    addChild: function() {
        // State change will cause component re-render
        this.setState(this.state.concat([
            {id:2,name:"Another Name"}
        ]))
    }

    render: function() {
        return (
            <div>
                <h1>App main component! </h1>
                <button onClick={this.addChild}>Add component</button>
                {
                    this.state.map((item) => (
                        <SampleComponent key={item.id} name={item.name}/>
                    ))
                }
            </div>
        );
    }

});

Using PuTTY's pscp.exe (which I have in an $env:path directory):

pscp -sftp -pw passwd c:\filedump\* user@host:/Outbox/
mv c:\filedump\* c:\backup\*

You can try:

df[0] = df[0].str.strip()

or more specifically for all string columns

non_numeric_columns = list(set(df.columns)-set(df._get_numeric_data().columns))
df[non_numeric_columns] = df[non_numeric_columns].apply(lambda x : str(x).strip())

The :query_string_normalizer option is also available, which will override the default normalizer HashConversions.to_params(query)

query_string_normalizer: ->(query){query.to_json}

You need the actual package (the directory containing __init__.py) stored somewhere that's in your system's PYTHONPATH. Normally, packages are distributed with a directory above the package directory, containing setup.py (which you should use to install the package), documentation, etc. This directory is not a package. Additionally, your Python27 directory is probably not in PYTHONPATH; more likely one or more subdirectories of it are.

IMHO Mark Elliot's solution's best one for this problem. If you need to make more complex comparison operations between array elements AND you're on PHP 5.3, you might also think about something like the following:

<?php

// First Array To Compare
$a1 = array('foo','bar','c');

// Target Array
$b1 = array('foo','bar');


// Evaluation Function - we pass guard and target array
$b=true;
$test = function($x) use (&$b, $b1) {
        if (!in_array($x,$b1)) {
                $b=false;
        }
};


// Actual Test on array (can be repeated with others, but guard 
// needs to be initialized again, due to by reference assignment above)
array_walk($a1, $test);
var_dump($b);

This relies on a closure; comparison function can become much more powerful. Good luck!

For selecting all in visual: Type Esc to be sure yor are in normal mode

:0 

type ENTER to go to the beginning of file

vG

$('selector').click(function (event) {
    alert($(this).index());
});

jsfiddle

Below is what worked for me:

1. In IIS Click on root note "LAPTOP ____**".
2. From option being shown in middle tray, Click on Configuration editor at bottom.
3. In Top Drop Down select "system.webServer/handlers".
4. At right window in Section Unlock Section.

When you type integer numbers to JtextField1 after key release it will go to inside try , for any other character it will throw NumberFormatException. If you set empty string to jTextField1 inside the catch so the user cannot type any other keys except positive numbers because JTextField1 will be cleared for each bad attempt.

 //Fields 
int x;
JTextField jTextField1;

 //Gui Code Here

private void jTextField1KeyReleased(java.awt.event.KeyEvent evt) {                                        
    try {
        x = Integer.parseInt(jTextField1.getText());
    } catch (NumberFormatException nfe) {
        jTextField1.setText("");
    }
}   

Facade discusses encapsulating a complex subsystem within a single interface object. This reduces the learning curve necessary to successfully leverage the subsystem. It also promotes decoupling the subsystem from its potentially many clients. On the other hand, if the Facade is the only access point for the subsystem, it will limit the features and flexibility that "power users" may need.

Source: https://sourcemaking.com/design_patterns/facade

Check out the cUrl PHP documentation page. It will help much more than just with example scripts.

Another answer I would have for this would be to take a pragmatic approach and keep your REST API contract simple. In my case I had refactored my REST API to make things more testable without resorting to JavaScript or XHR, just simple HTML forms and links.

So to be more specific on your question above, I'd just use return code 200 and have the returned message contain a JSON message that your application can understand. Depending on your needs it may require the ID of the object that is newly created so the web application can get the data in another call.

One note, in my refactored API contract, POST responses should not contain any cacheable data as POSTs are not really cachable, so limit it to IDs that can be requested and cached using a GET request.

Maybe you got your columns backwards??

ALTER TABLE Employees
ADD FOREIGN KEY (UserID)           <-- this needs to be a column of the Employees table
REFERENCES ActiveDirectories(id)   <-- this needs to be a column of the ActiveDirectories table

Could it be that the column is called ID in the Employees table, and UserID in the ActiveDirectories table?

Then your command should be:

ALTER TABLE Employees
ADD FOREIGN KEY (ID)                   <-- column in table "Employees"
REFERENCES ActiveDirectories(UserID)   <-- column in table "ActiveDirectories" 

Before increasing the max_connections variable, you have to check how many non-interactive connection you have by running show processlist command.

If you have many sleep connection, you have to decrease the value of the "wait_timeout" variable to close non-interactive connection after waiting some times.

• To show the wait_timeout value:

SHOW SESSION VARIABLES LIKE 'wait_timeout';

+---------------+-------+

| Variable_name | Value |

+---------------+-------+

| wait_timeout | 28800 |

+---------------+-------+

the value is in second, it means that non-interactive connection still up to 8 hours.

• To change the value of "wait_timeout" variable:

SET session wait_timeout=600; Query OK, 0 rows affected (0.00 sec)

After 10 minutes if the sleep connection still sleeping the mysql or MariaDB drop that connection.

Yes, this is confusing...

According to this blog post, it looks like this is an omission from WPF.

To make it work you need to use a style:

    <Border Name="ClearButtonBorder" Grid.Column="1" CornerRadius="0,3,3,0">
        <Border.Style>
            <Style>
                <Setter Property="Border.Background" Value="Blue"/>
                <Style.Triggers>
                    <Trigger Property="Border.IsMouseOver" Value="True">
                        <Setter Property="Border.Background" Value="Green" />
                    </Trigger>
                </Style.Triggers>
            </Style>
        </Border.Style>
        <TextBlock HorizontalAlignment="Center" VerticalAlignment="Center" Text="X" />
    </Border>

I guess this problem isn't that common as most people tend to factor out this sort of thing into a style, so it can be used on multiple controls.

If you're using GNU find,

find . -mtime 1 -exec cp -t ~/test/ {} +

This works as well as piping the output into xargs while avoiding the pitfalls of doing so (it handles embedded spaces and newlines without having to use find ... -print0 | xargs -0 ...).

To set the use of scientific notation in your entire R session, you can use the scipen option. From the documentation (?options):

‘scipen’: integer.  A penalty to be applied when deciding to print
          numeric values in fixed or exponential notation.  Positive
          values bias towards fixed and negative towards scientific
          notation: fixed notation will be preferred unless it is more
          than ‘scipen’ digits wider.

So in essence this value determines how likely it is that scientific notation will be triggered. So to prevent scientific notation, simply use a large positive value like 999:

options(scipen=999)

i don t know what solution is better, but i use this:

String[] ext = "*.ext1|*.ext2".Split('|');

            List<String> files = new List<String>();
            foreach (String tmp in ext)
            {
                files.AddRange(Directory.GetFiles(dir, tmp, SearchOption.AllDirectories));
            }

If you go to the Flat file connection manager under Advanced and Look at the "OutputColumnWidth" description's ToolTip It will tell you that Composit characters may use more spaces. So the "é" in "Société" most likely occupies more than one character.

EDIT: Here's something about it: http://en.wikipedia.org/wiki/Precomposed_character

You could use a StringReader and convert the reader to an input stream using the solution in this other stackoverflow post.

Here is my logging class based on the accepted answer:

import java.io.File;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.logging.*;

public class ErrorLogger
{
    private Logger logger;

    public ErrorLogger()
    {
        logger = Logger.getAnonymousLogger();

        configure();
    }

    private void configure()
    {
        try
        {
            String logsDirectoryFolder = "logs";
            Files.createDirectories(Paths.get(logsDirectoryFolder));
            FileHandler fileHandler = new FileHandler(logsDirectoryFolder + File.separator + getCurrentTimeString() + ".log");
            logger.addHandler(fileHandler);
            SimpleFormatter formatter = new SimpleFormatter();
            fileHandler.setFormatter(formatter);
        } catch (IOException exception)
        {
            exception.printStackTrace();
        }

        addCloseHandlersShutdownHook();
    }

    private void addCloseHandlersShutdownHook()
    {
        Runtime.getRuntime().addShutdownHook(new Thread(() ->
        {
            // Close all handlers to get rid of empty .LCK files
            for (Handler handler : logger.getHandlers())
            {
                handler.close();
            }
        }));
    }

    private String getCurrentTimeString()
    {
        DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd-HH-mm-ss");
        return dateFormat.format(new Date());
    }

    public void log(Exception exception)
    {
        logger.log(Level.SEVERE, "", exception);
    }
}

It will work.

long yourmilliseconds = System.currentTimeMillis();
SimpleDateFormat sdf = new SimpleDateFormat("MMM dd,yyyy HH:mm");    
Date resultdate = new Date(yourmilliseconds);
System.out.println(sdf.format(resultdate));

Case sensitive: document.getElementById (notice the capital B).

In the "build.gradle" for your app, (the app, not the project), add this:

dependencies {
    ...
    implementation 'com.android.volley:volley:1.1.0'
}

Can you be a bit more specific about what you're trying to do and how you're trying to do it?

If you're attempting to invoke the program using the <exec> task you might do the following:

<exec executable="name-of-executable">
  <arg value="arg0"/>
  <arg value="arg1"/>
</exec>

As far as I understand it, the HTML5 input type="number always returns input.value as a string.

Apparently, input.valueAsNumber returns the current value as a floating point number. You could use this to return a value you want.

See http://diveintohtml5.info/forms.html#type-number

You need to ensure that any code that modifies the HTTP headers is executed before the headers are sent. This includes statements like session_start(). The headers will be sent automatically when any HTML is output.

Your problem here is that you're sending the HTML ouput at the top of your page before you've executed any PHP at all.

Move the session_start() to the top of your document :

<?php    session_start(); ?> <html> <head> <title>PHP SDK</title> </head> <body> <?php require_once 'src/facebook.php';    // more PHP code here. 

I recommend installing the custom_error_message gem (or as a plugin) originally written by David Easley

It lets you do stuff like:

validates_presence_of :non_friendly_field_name, :message => "^Friendly field name is blank"

Richard Fearn has the right idea, so I wrote up the full class based on his skeleton code. It's hopefully short enough to post here. Copy & paste for enjoyment. I should probably add some magic incantation, too: "This code is released to the public domain"

import org.slf4j.Logger;

public class LogLevel {

    /**
     * Allowed levels, as an enum. Import using "import [package].LogLevel.Level"
     * Every logging implementation has something like this except SLF4J.
     */

    public static enum Level {
        TRACE, DEBUG, INFO, WARN, ERROR
    }

    /**
     * This class cannot be instantiated, why would you want to?
     */

    private LogLevel() {
        // Unreachable
    }

    /**
     * Log at the specified level. If the "logger" is null, nothing is logged.
     * If the "level" is null, nothing is logged. If the "txt" is null,
     * behaviour depends on the SLF4J implementation.
     */

    public static void log(Logger logger, Level level, String txt) {
        if (logger != null && level != null) {
            switch (level) {
            case TRACE:
                logger.trace(txt);
                break;
            case DEBUG:
                logger.debug(txt);
                break;
            case INFO:
                logger.info(txt);
                break;
            case WARN:
                logger.warn(txt);
                break;
            case ERROR:
                logger.error(txt);
                break;
            }
        }
    }

    /**
     * Log at the specified level. If the "logger" is null, nothing is logged.
     * If the "level" is null, nothing is logged. If the "format" or the "argArray"
     * are null, behaviour depends on the SLF4J-backing implementation.
     */

    public static void log(Logger logger, Level level, String format, Object[] argArray) {
        if (logger != null && level != null) {
            switch (level) {
            case TRACE:
                logger.trace(format, argArray);
                break;
            case DEBUG:
                logger.debug(format, argArray);
                break;
            case INFO:
                logger.info(format, argArray);
                break;
            case WARN:
                logger.warn(format, argArray);
                break;
            case ERROR:
                logger.error(format, argArray);
                break;
            }
        }
    }

    /**
     * Log at the specified level, with a Throwable on top. If the "logger" is null,
     * nothing is logged. If the "level" is null, nothing is logged. If the "format" or
     * the "argArray" or the "throwable" are null, behaviour depends on the SLF4J-backing
     * implementation.
     */

    public static void log(Logger logger, Level level, String txt, Throwable throwable) {
        if (logger != null && level != null) {
            switch (level) {
            case TRACE:
                logger.trace(txt, throwable);
                break;
            case DEBUG:
                logger.debug(txt, throwable);
                break;
            case INFO:
                logger.info(txt, throwable);
                break;
            case WARN:
                logger.warn(txt, throwable);
                break;
            case ERROR:
                logger.error(txt, throwable);
                break;
            }
        }
    }

    /**
     * Check whether a SLF4J logger is enabled for a certain loglevel. 
     * If the "logger" or the "level" is null, false is returned.
     */

    public static boolean isEnabledFor(Logger logger, Level level) {
        boolean res = false;
        if (logger != null && level != null) {
            switch (level) {
            case TRACE:
                res = logger.isTraceEnabled();
                break;
            case DEBUG:
                res = logger.isDebugEnabled();
                break;
            case INFO:
                res = logger.isInfoEnabled();
                break;
            case WARN:
                res = logger.isWarnEnabled();
                break;
            case ERROR:
                res = logger.isErrorEnabled();
                break;
            }
        }
        return res;
    }
}

You can use an anonymous function to pass the matches to your function:

$result = preg_replace_callback(
    "/\{([<>])([a-zA-Z0-9_]*)(\?{0,1})([a-zA-Z0-9_]*)\}(.*)\{\\1\/\\2\}/isU",
    function($m) { return CallFunction($m[1], $m[2], $m[3], $m[4], $m[5]); },
    $result
);

Apart from being faster, this will also properly handle double quotes in your string. Your current code using /e would convert a double quote " into \".

The dependency has a snapshot version. For snapshots, Maven will check the local repository and if the artifact found in the local repository is too old, it will attempt to find an updated one in the remote repositories. That is probably what you are seeing.

Note that this behavior is controlled by the updatePolicy directive in the repository configuration (which is daily by default for snapshot repositories).

Setting "Copy to Output Directory" to "Copy always" or "Copy if newer" may help for you.

Your PicPath is a relative path that is converted into an absolute path at some time while loading the image. Most probably you will see that there are no images on the specified location if you use Path.GetFullPath(PicPath) in Debug.

try {
} catch (javax.script.ScriptException ex) {
// System.out.println(ex.getMessage());
}

You need to precede the lines starting with gcc and rm with a hard tab. Commands in make rules are required to start with a tab (unless they follow a semicolon on the same line). The result should look like this:

PROG = semsearch
all: $(PROG)
%: %.c
        gcc -o $@ $< -lpthread

clean:
        rm $(PROG)

Note that some editors may be configured to insert a sequence of spaces instead of a hard tab. If there are spaces at the start of these lines you'll also see the "missing separator" error. If you do have problems inserting hard tabs, use the semicolon way:

PROG = semsearch
all: $(PROG)
%: %.c ; gcc -o $@ $< -lpthread

clean: ; rm $(PROG)

Remove the extension altogether and then double-click it. Most system shell scripts are like this. As long as it has a shebang it will work.

From local to server:

scp file1.txt file2.sh [email protected]:~/pathtoupload

From server to local:

scp -T [email protected]:"file1.txt file2.txt" "~/yourpathtocopy"

If you want a breakdown of how many files are in each dir under your current dir:

for i in */ .*/ ; do 
    echo -n $i": " ; 
    (find "$i" -type f | wc -l) ; 
done

That can go all on one line, of course. The parenthesis clarify whose output wc -l is supposed to be watching (find $i -type f in this case).

Since c++11 we could use list initialization:

char* c = new char[length]{};

For an aggregate type, then aggregate initialization will be performed, which has the same effect like char c[2] = {};.

I had the same problem when working in Angular 5. In order to make it work directly without writing a polyfill yourself, just add the following line to polyfills.ts file:

import "core-js/es7/array"

Also, tsconfig.json lib section might be relevant:

"lib": [
  "es2017",
  "dom"
],

If you have control over the request, you could set the content type to binary/octet-stream. This allows to query for parameters without consuming the input stream.

However, this might be specific to some application servers. I only tested tomcat, jetty seems to behave the same way according to https://stackoverflow.com/a/11434646/957103.

since xcode5 organizer no longer team section exists. but the bold sentence was the answer for me. God thanks there is another mac to restore and import to problemmatic mac. now all is ok.

$(this.parentNode).addClass('newClass');

You can use -match instead -eq if you also want to exclude files that only contain whitespace characters:

@(gc c:\FileWithEmptyLines.txt) -match '\S'  | out-file c:\FileWithNoEmptyLines

Also known as Frozen Binaries but not the same as as the output of a true compiler- they run byte code through a virtual machine (PVM). Run the same as a compiled program just larger because the program is being compiled along with the PVM. Py2exe can freeze standalone programs that use the tkinter, PMW, wxPython, and PyGTK GUI libraties; programs that use the pygame game programming toolkit; win32com client programs; and more. The Stackless Python system is a standard CPython implementation variant that does not save state on the C language call stack. This makes Python more easy to port to small stack architectures, provides efficient multiprocessing options, and fosters novel programming structures such as coroutines. Other systems of study that are working on future development: Pyrex is working on the Cython system, the Parrot project, the PyPy is working on replacing the PVM altogether, and of course the founder of Python is working with Google to get Python to run 5 times faster than C with the Unladen Swallow project. In short, py2exe is the easiest and Cython is more efficient for now until these projects improve the Python Virtual Machine (PVM) for standalone files.

Set selected="selected" for the option you want to be the default.

<option selected="selected">
3
</option>

This issue can also happen due to the following

1.In the Web.Config

<system.webServer>
     <modules runAllManagedModulesForAllRequests="true" /> 
</system.webServer>

2.Make sure the following are available in the bin folder on the server where the Web API is deployed

•System.Net.Http

•System.Net.Http.Formatting

•System.Web.Http.WebHost

•System.Web.Http

These assemblies won't be copied in the bin folder by default if the publish is through Visual Studio because the Web API packages are installed through Nuget in the development machine. Still if you want to achieve these files to be available as part of Visual Studio publish then you need to set CopyLocal to True for these Assemblies

i will provide mine because @muni s solution was a bit overkill for me

note: if you want to add custom definitions for several resolutions together, say something like this:

//mobile generally   
 @media screen and (max-width: 1199)  {

      .irns-desktop{
        display: none;
      }

      .irns-mobile{
        display: initial;
      }

    }

Be sure to add those definitions on top of the accurate definitions, so it cascades correctly (e.g. 'smartphone portrait' must win versus 'mobile generally')

//here all definitions to apply globally


//desktop
@media only screen
and (min-width : 1200) {


}

//tablet landscape
@media screen and (min-width: 1024px) and (max-width: 1600px)  {

} // end media query

//tablet portrait
@media screen and (min-width: 768px) and (max-width: 1023px)  {

}//end media definition


//smartphone landscape
@media screen and (min-width: 480px) and (max-width: 767px)  {

}//end media query



//smartphone portrait
@media screen /*and (min-width: 320px)*/
and (max-width: 479px) {

}

//end media query

Have you tried this?

@media print {
    html, body {
        height: 99%;    
    }
}

Add the following to your Gemfile

ruby '2.3.0'

For e.g. when a user has login.Now lets say the user want to create a forum topic, How will I know that the user is already logged in?

Think about it - there must be some handshake that tells your "Create Forum" API that this current request is from an authenticated user. Since REST APIs are typically stateless, the state must be persisted somewhere. Your client consuming the REST APIs is responsible for maintaining that state. Usually, it is in the form of some token that gets passed around since the time the user was logged in. If the token is good, your request is good.

Check how Amazon AWS does authentications. That's a perfect example of "passing the buck" around from one API to another.

*I thought of adding some practical response to my previous answer. Try Apache Shiro (or any authentication/authorization library). Bottom line, try and avoid custom coding. Once you have integrated your favorite library (I use Apache Shiro, btw) you can then do the following:

1. Create a Login/logout API like: /api/v1/login and api/v1/logout
2. In these Login and Logout APIs, perform the authentication with your user store
3. The outcome is a token (usually, JSESSIONID) that is sent back to the client (web, mobile, whatever)
4. From this point onwards, all subsequent calls made by your client will include this token
5. Let's say your next call is made to an API called /api/v1/findUser
6. The first thing this API code will do is to check for the token ("is this user authenticated?")
7. If the answer comes back as NO, then you throw a HTTP 401 Status back at the client. Let them handle it.
8. If the answer is YES, then proceed to return the requested User

That's all. Hope this helps.

.toString() is available, or just add "" to the end of the int

var x = 3,
    toString = x.toString(),
    toConcat = x + "";

Angular is simply JavaScript at the core.

This is jQuery Email Validation using Regex Expression. you can also use the same concept for AngularJS if you have idea of AngularJS.

var expression = /^[\w\-\.\+]+\@[a-zA-Z0-9\.\-]+\.[a-zA-z0-9]{2,4}$/;

Source.

Both props and states are the same in a way that both triggers the rerendering. the difference is that props come from parent components and states are managed in the current component. so states are mutable and props are immutable

For bash (since version 4.0):

shopt -s globstar nullglob dotglob
echo **/*".ext"

That's all.
The trailing extension ".ext" there to select files (or dirs) with that extension.

Option globstar activates the ** (search recursivelly).
Option nullglob removes an * when it matches no file/dir.
Option dotglob includes files that start wit a dot (hidden files).

Beware that before bash 4.3, **/ also traverses symbolic links to directories which is not desirable.

protected void btnExportExcel_Click(object sender, EventArgs e)
{
    DataTable _datatable = new DataTable();
    for (int i = 0; i < grdReport.Columns.Count; i++)
    {
        _datatable.Columns.Add(grdReport.Columns[i].ToString());
    }
    foreach (GridViewRow row in grdReport.Rows)
    {
        DataRow dr = _datatable.NewRow();
        for (int j = 0; j < grdReport.Columns.Count; j++)
        {
            if (!row.Cells[j].Text.Equals("&nbsp;"))
                dr[grdReport.Columns[j].ToString()] = row.Cells[j].Text;
        }

        _datatable.Rows.Add(dr);
    }
    ExportDataTableToExcel(_datatable);
}

For commenting blocks of code, I like the NERD Commenter plugin.

Select some text:

Shift-V
...select the lines of text you want to comment....

Comment:

,cc

Uncomment:

,cu

Or just toggle the comment state of a line or block:

,c<space>

@poulter7: I cannot comment on the other answers, so I post it as new answer: be careful with

np.log(df.price).diff() 

as this will fail for indices which can become negative as well as risk factors e.g. negative interest rates. In these cases

np.log(df.price/df.price.shift(1)).dropna()

is preferred and based on my experience generally the safer approach. It also evaluates the logarithm only once.

Whether you use +1 or -1 depends on the ordering of your time series. Use -1 for descending and +1 for ascending dates - in both cases the shift provides the preceding date's value.

new ES6:

'import' should be used with 'export' key words to share variables/arrays/objects between js files:

export default myObject;

//....in another file

import myObject from './otherFile.js';

old skool:

'require' should be used with 'module.exports'

 module.exports = myObject;

//....in another file

var myObject = require('./otherFile.js');

I couldn't possibly explain it better than wikipedia does: http://en.wikipedia.org/wiki/MIME_type

In addition to e-mail applications, Web browsers also support various MIME types. This enables the browser to display or output files that are not in HTML format.

IOW, it helps the browser (or content consumer, because it may not just be a browser) determine what content they are about to consume; this means a browser may be able to make a decision on the correct plugin to use to display content, or a media player may be able to load up the correct codec or plugin.

How about this one-liner?

var isAndroid = /(android)/i.test(navigator.userAgent);

The i modifier is used to perform case-insensitive matching.

Technique taken from Cordova AdMob test project: https://github.com/floatinghotpot/cordova-admob-pro/wiki/00.-How-To-Use-with-PhoneGap-Build

A more generic answer that works in AWS MySQL.

select datetable.Date
from (
    select date_format(adddate(now(),-(a.a + (10 * b.a) + (100 * c.a))),'%Y-%m-%d') AS Date
    from (select 0 as a union all select 1 union all select 2 union all select 3 union all select 4
     union all select 5 union all select 6 union all select 7 union all select 8 union all select 9) as a

    cross join (select 0 as a union all select 1 union all select 2 union all select 3 union all select 4
     union all select 5 union all select 6 union all select 7 union all select 8 union all select 9) as b

    cross join (select 0 as a union all select 1 union all select 2 union all select 3 union all select 4
     union all select 5 union all select 6 union all select 7 union all select 8 union all select 9) as c
) datetable
where datetable.Date between now() - INTERVAL 14 Day and Now()
order by datetable.Date DESC

If you're using SQL Server 2008, there's a new featured called a User Defined Table Type. Here is an example of how to use it:

Create your User Defined Table Type:

CREATE TYPE [dbo].[StringList] AS TABLE(
    [Item] [NVARCHAR](MAX) NULL
);

Next you need to use it properly in your stored procedure:

CREATE PROCEDURE [dbo].[sp_UseStringList]
    @list StringList READONLY
AS
BEGIN
    -- Just return the items we passed in
    SELECT l.Item FROM @list l;
END

Finally here's some sql to use it in c#:

using (var con = new SqlConnection(connstring))
{
    con.Open();

    using (SqlCommand cmd = new SqlCommand("exec sp_UseStringList @list", con))
    {
        using (var table = new DataTable()) {
          table.Columns.Add("Item", typeof(string));

          for (int i = 0; i < 10; i++)
            table.Rows.Add("Item " + i.ToString());

          var pList = new SqlParameter("@list", SqlDbType.Structured);
          pList.TypeName = "dbo.StringList";
          pList.Value = table;

          cmd.Parameters.Add(pList);

          using (var dr = cmd.ExecuteReader())
          {
            while (dr.Read())
                Console.WriteLine(dr["Item"].ToString());
          }
         }
    }
}

To execute this from SSMS

DECLARE @list AS StringList

INSERT INTO @list VALUES ('Apple')
INSERT INTO @list VALUES ('Banana')
INSERT INTO @list VALUES ('Orange')

-- Alternatively, you can populate @list with an INSERT-SELECT
INSERT INTO @list
   SELECT Name FROM Fruits

EXEC sp_UseStringList @list

yes use \n, unless you are generating html code, in which you want to use <br />

Swift 5+

None of the answers really cover in detail the default built in local storage capabilities. It can do far more than just strings.

You have the following options straight from the apple documentation for 'getting' data from the defaults.

func object(forKey: String) -> Any?
//Returns the object associated with the specified key.

func url(forKey: String) -> URL?
//Returns the URL associated with the specified key.

func array(forKey: String) -> [Any]?
//Returns the array associated with the specified key.

func dictionary(forKey: String) -> [String : Any]?
//Returns the dictionary object associated with the specified key.

func string(forKey: String) -> String?
//Returns the string associated with the specified key.

func stringArray(forKey: String) -> [String]?
//Returns the array of strings associated with the specified key.

func data(forKey: String) -> Data?
//Returns the data object associated with the specified key.

func bool(forKey: String) -> Bool
//Returns the Boolean value associated with the specified key.

func integer(forKey: String) -> Int
//Returns the integer value associated with the specified key.

func float(forKey: String) -> Float
//Returns the float value associated with the specified key.

func double(forKey: String) -> Double
//Returns the double value associated with the specified key.

func dictionaryRepresentation() -> [String : Any]
//Returns a dictionary that contains a union of all key-value pairs in the domains in the search list.

Here are the options for 'setting'

func set(Any?, forKey: String)
//Sets the value of the specified default key.

func set(Float, forKey: String)
//Sets the value of the specified default key to the specified float value.

func set(Double, forKey: String)
//Sets the value of the specified default key to the double value.

func set(Int, forKey: String)
//Sets the value of the specified default key to the specified integer value.

func set(Bool, forKey: String)
//Sets the value of the specified default key to the specified Boolean value.

func set(URL?, forKey: String)
//Sets the value of the specified default key to the specified URL.

If are storing things like preferences and not a large data set these are perfectly fine options.

Double Example:

Setting:

let defaults = UserDefaults.standard
var someDouble:Double = 0.5
defaults.set(someDouble, forKey: "someDouble")

Getting:

let defaults = UserDefaults.standard
var someDouble:Double = 0.0
someDouble = defaults.double(forKey: "someDouble")

What is interesting about one of the getters is dictionaryRepresentation, this handy getter will take all your data types regardless what they are and put them into a nice dictionary that you can access by it's string name and give the correct corresponding data type when you ask for it back since it's of type 'any'.

You can store your own classes and objects also using the func set(Any?, forKey: String) and func object(forKey: String) -> Any? setter and getter accordingly.

Hope this clarifies more the power of the UserDefaults class for storing local data.

On the note of how much you should store and how often, Hardy_Germany gave a good answer on that on this post, here is a quote from it

As many already mentioned: I'm not aware of any SIZE limitation (except physical memory) to store data in a .plist (e.g. UserDefaults). So it's not a question of HOW MUCH.

The real question should be HOW OFTEN you write new / changed values... And this is related to the battery drain this writes will cause.

IOS has no chance to avoid a physical write to "disk" if a single value changed, just to keep data integrity. Regarding UserDefaults this cause the whole file rewritten to disk.

This powers up the "disk" and keep it powered up for a longer time and prevent IOS to go to low power state.

Something else to note as mentioned by user Mohammad Reza Farahani from this post is the asynchronous and synchronous nature of userDefaults.

When you set a default value, it’s changed synchronously within your process, and asynchronously to persistent storage and other processes.

For example if you save and quickly close the program you may notice it does not save the results, this is because it's persisting asynchronously. You might not notice this all the time so if you plan on saving before quitting the program you may want to account for this by giving it some time to finish.

Maybe someone has some nice solutions for this they can share in the comments?

I'm assuming that you wish to write software to do this. To do it naively you would just find lines and set the vectors. To do it intelligently, you attempt to fit shapes onto the drawing (model fitting). Additionally, you should attempt to ascertain bitmaped regions (regions you can't model through shames or applying textures. I would not recommend going this route as that it will take quite a bit of time and require a bit of graphics and computer vision knowledge. However, the output will much and scale much better than your original output.

I got the same error when xampp was installed on windows 10.

www.example.com:443:0 server certificate does NOT include an ID which matches the server name

So I opened httpd-ssl.conf file in xampp folder and changed the following line

ServerName www.example.com:443

To

ServerName localhost

And the problem was fixed.

You can use

ctrl and + or - key

Although the answer that Gunter posted was correct, it is not different than what I already had posted. The problem was not the ENV directive, but the subsequent instruction RUN export $PATH

There's no need to export the environment variables, once you have declared them via ENV in your Dockerfile.

As soon as the RUN export ... lines were removed, my image was built successfully

I think this answer needs an update and the solution would go better this way.

from datetime import datetime

datetime.strptime("29.08.2011 11:05:02", "%d.%m.%Y %H:%M:%S").strftime("%s")

or you may use datetime object and format the time using %s to convert it into epoch time.

I know this has already been answered, but here is an example for the people who are trying to use SQL Server Types in a vb project:

            Imports System
            Imports System.IO
            Imports System.Runtime.InteropServices

            Namespace SqlServerTypes
                Public Class Utilities



                    <DllImport("kernel32.dll", CharSet:=CharSet.Auto, SetLastError:=True)>
                    Public Shared Function LoadLibrary(ByVal libname As String) As IntPtr

                    End Function

                    Public Shared Sub LoadNativeAssemblies(ByVal rootApplicationPath As String)
                        Dim nativeBinaryPath = If(IntPtr.Size > 4, Path.Combine(rootApplicationPath, "SqlServerTypes\x64\"), Path.Combine(rootApplicationPath, "SqlServerTypes\x86\"))
                        LoadNativeAssembly(nativeBinaryPath, "msvcr120.dll")
                        LoadNativeAssembly(nativeBinaryPath, "SqlServerSpatial140.dll")
                    End Sub

                    Private Shared Sub LoadNativeAssembly(ByVal nativeBinaryPath As String, ByVal assemblyName As String)
                        Dim path = System.IO.Path.Combine(nativeBinaryPath, assemblyName)
                        Dim ptr = LoadLibrary(path)

                        If ptr = IntPtr.Zero Then
                            Throw New Exception(String.Format("Error loading {0} (ErrorCode: {1})", assemblyName, Marshal.GetLastWin32Error()))
                        End If
                    End Sub
                End Class
            End Namespace

That's because abc is undefined at the moment of the template rendering. You can use safe navigation operator (?) to "protect" template until HTTP call is completed:

{{abc?.xyz?.name}}

You can read more about safe navigation operator here.

Update:

Safe navigation operator can't be used in arrays, you will have to take advantage of NgIf directive to overcome this problem:

<div *ngIf="arr && arr.length > 0">
    {{arr[0].name}}
</div>

Read more about NgIf directive here.

You can use the built-in Dir function or the FileSystemObject.

• Dir Function: VBA: Dir Function

• FileSystemObject: VBA: FileSystemObject - Files Collection

They each have their own strengths and weaknesses.

Dir Function

The Dir Function is a built-in, lightweight method to get a list of files. The benefits for using it are:

• Easy to Use
• Good performance (it's fast)
• Wildcard support

The trick is to understand the difference between calling it with or without a parameter. Here is a very simple example to demonstrate:

Public Sub ListFilesDir(ByVal sPath As String, Optional ByVal sFilter As String)

    Dim sFile As String

    If Right(sPath, 1) <> "\" Then
        sPath = sPath & "\"
    End If

    If sFilter = "" Then
        sFilter = "*.*"
    End If

    'call with path "initializes" the dir function and returns the first file name
    sFile = Dir(sPath & sFilter)

   'call it again until there are no more files
    Do Until sFile = ""

        Debug.Print sFile

        'subsequent calls without param return next file name
        sFile = Dir

    Loop

End Sub

If you alter any of the files inside the loop, you will get unpredictable results. It is better to read all the names into an array of strings before doing any operations on the files. Here is an example which builds on the previous one. This is a Function that returns a String Array:

Public Function GetFilesDir(ByVal sPath As String, _
    Optional ByVal sFilter As String) As String()

    'dynamic array for names
    Dim aFileNames() As String
    ReDim aFileNames(0)

    Dim sFile As String
    Dim nCounter As Long

    If Right(sPath, 1) <> "\" Then
        sPath = sPath & "\"
    End If

    If sFilter = "" Then
        sFilter = "*.*"
    End If

    'call with path "initializes" the dir function and returns the first file
    sFile = Dir(sPath & sFilter)

    'call it until there is no filename returned
    Do While sFile <> ""

        'store the file name in the array
        aFileNames(nCounter) = sFile

        'subsequent calls without param return next file
        sFile = Dir

        'make sure your array is large enough for another
        nCounter = nCounter + 1
        If nCounter > UBound(aFileNames) Then
            'preserve the values and grow by reasonable amount for performance
            ReDim Preserve aFileNames(UBound(aFileNames) + 255)
        End If

    Loop

    'truncate the array to correct size
    If nCounter < UBound(aFileNames) Then
        ReDim Preserve aFileNames(0 To nCounter - 1)
    End If

    'return the array of file names
    GetFilesDir = aFileNames()

End Function

File System Object

The File System Object is a library for IO operations which supports an object-model for manipulating files. Pros for this approach:

• Intellisense
• Robust object-model

You can add a reference to to "Windows Script Host Object Model" (or "Windows Scripting Runtime") and declare your objects like so:

Public Sub ListFilesFSO(ByVal sPath As String)

    Dim oFSO As FileSystemObject
    Dim oFolder As Folder
    Dim oFile As File

    Set oFSO = New FileSystemObject
    Set oFolder = oFSO.GetFolder(sPath)
    For Each oFile In oFolder.Files
        Debug.Print oFile.Name
    Next 'oFile

    Set oFile = Nothing
    Set oFolder = Nothing
    Set oFSO = Nothing

End Sub

If you don't want intellisense you can do like so without setting a reference:

Public Sub ListFilesFSO(ByVal sPath As String)

    Dim oFSO As Object
    Dim oFolder As Object
    Dim oFile As Object

    Set oFSO = CreateObject("Scripting.FileSystemObject")
    Set oFolder = oFSO.GetFolder(sPath)
    For Each oFile In oFolder.Files
        Debug.Print oFile.Name
    Next 'oFile

    Set oFile = Nothing
    Set oFolder = Nothing
    Set oFSO = Nothing

End Sub

I had the same issue with PuttyGen not wanting to import an openSSH private key. I tried everything and what I found out was the old version of PuttyGen did not support importing OpenSSH. Once I downloaded the latest Putty, puttygen then allowed it to import the openssh private key just fine. I now have a hole in the side of my desk for pounding my head against it for the past hour.

On my execution of openssl pkcs12 -export -out cacert.pkcs12 -in testca/cacert.pem, I received the following message:

unable to load private key 140707250050712:error:0906D06C:PEM routines:PEM_read_bio:no start line:pem_lib.c:701:Expecting: ANY PRIVATE KEY`

Got this solved by providing the key file along with the command. The switch is -inkey inkeyfile.pem

I know the guy said "C"... But if you have the chance, use a C++ template:

template<class T> T min(T a, T b) { return a < b ? a : b; }

Type safe, and no problems with the ++ mentioned in other comments.

Continue to use them as a system dependency and copy them over to target/.../WEB-INF/lib ... using the Maven dependency plugin:

http://maven.apache.org/plugins/maven-dependency-plugin/examples/copying-artifacts.html

While an approach proposed above (@chookoos, here in this q&a convert to Excel workbook) and import resolves those kinds of issues, this solution this solution in another q&a is excellent because you can stay with your csv or tsv or txt file, and perfom the necessary fine tuning without creating a Microsoft product related solution

I had the same problem. solved it like this:

return new ModelAndView("redirect:/user/list?success=true");

And then my controller method look like this:

public ModelMap list(@RequestParam(required=false) boolean success) {
    ModelMap mm = new ModelMap();
    mm.put(SEARCH_MODEL_KEY, campaignService.listAllCampaigns());
    if(success)
        mm.put("successMessageKey", "campaign.form.msg.success");
    return mm;
}

Works perfectly unless you want to send simple data, not collections let's say. Then you'd have to use session I guess.

@Martin Konecny's answer provides the correct answer, but - as he mentions - it only works if the actual script is not invoked through a symlink residing in a different directory.

This answer covers that case: a solution that also works when the script is invoked through a symlink or even a chain of symlinks:

Linux / GNU readlink solution:

If your script needs to run on Linux only or you know that GNU readlink is in the $PATH, use readlink -f, which conveniently resolves a symlink to its ultimate target:

 scriptDir=$(dirname -- "$(readlink -f -- "$BASH_SOURCE")")

^{Note that GNU readlink has 3 related options for resolving a symlink to its ultimate target's full path: -f (--canonicalize), -e (--canonicalize-existing), and -m (--canonicalize-missing) - see man readlink.
Since the target by definition exists in this scenario, any of the 3 options can be used; I've chosen -f here, because it is the most well-known one.}

Multi-(Unix-like-)platform solution (including platforms with a POSIX-only set of utilities):

If your script must run on any platform that:

• has a readlink utility, but lacks the -f option (in the GNU sense of resolving a symlink to its ultimate target) - e.g., macOS.

  • macOS uses an older version of the BSD implementation of readlink; note that recent versions of FreeBSD/PC-BSD do support -f.

• does not even have readlink, but has POSIX-compatible utilities - e.g., HP-UX (thanks, @Charles Duffy).

The following solution, inspired by https://stackoverflow.com/a/1116890/45375, defines helper shell function, rreadlink(), which resolves a given symlink to its ultimate target in a loop - this function is in effect a POSIX-compliant implementation of GNU readlink's -e option, which is similar to the -f option, except that the ultimate target must exist.

Note: The function is a bash function, and is POSIX-compliant only in the sense that only POSIX utilities with POSIX-compliant options are used. For a version of this function that is itself written in POSIX-compliant shell code (for /bin/sh), see here.

• If readlink is available, it is used (without options) - true on most modern platforms.

• Otherwise, the output from ls -l is parsed, which is the only POSIX-compliant way to determine a symlink's target.
  Caveat: this will break if a filename or path contains the literal substring -> - which is unlikely, however.
  (Note that platforms that lack readlink may still provide other, non-POSIX methods for resolving a symlink; e.g., @Charles Duffy mentions HP-UX's find utility supporting the %l format char. with its -printf primary; in the interest of brevity the function does NOT try to detect such cases.)

• An installable utility (script) form of the function below (with additional functionality) can be found as rreadlink in the npm registry; on Linux and macOS, install it with [sudo] npm install -g rreadlink; on other platforms (assuming they have bash), follow the manual installation instructions.

If the argument is a symlink, the ultimate target's canonical path is returned; otherwise, the argument's own canonical path is returned.

#!/usr/bin/env bash

# Helper function.
rreadlink() ( # execute function in a *subshell* to localize the effect of `cd`, ...

  local target=$1 fname targetDir readlinkexe=$(command -v readlink) CDPATH= 

  # Since we'll be using `command` below for a predictable execution
  # environment, we make sure that it has its original meaning.
  { \unalias command; \unset -f command; } &>/dev/null

  while :; do # Resolve potential symlinks until the ultimate target is found.
      [[ -L $target || -e $target ]] || { command printf '%s\n' "$FUNCNAME: ERROR: '$target' does not exist." >&2; return 1; }
      command cd "$(command dirname -- "$target")" # Change to target dir; necessary for correct resolution of target path.
      fname=$(command basename -- "$target") # Extract filename.
      [[ $fname == '/' ]] && fname='' # !! curiously, `basename /` returns '/'
      if [[ -L $fname ]]; then
        # Extract [next] target path, which is defined
        # relative to the symlink's own directory.
        if [[ -n $readlinkexe ]]; then # Use `readlink`.
          target=$("$readlinkexe" -- "$fname")
        else # `readlink` utility not available.
          # Parse `ls -l` output, which, unfortunately, is the only POSIX-compliant 
          # way to determine a symlink's target. Hypothetically, this can break with
          # filenames containig literal ' -> ' and embedded newlines.
          target=$(command ls -l -- "$fname")
          target=${target#* -> }
        fi
        continue # Resolve [next] symlink target.
      fi
      break # Ultimate target reached.
  done
  targetDir=$(command pwd -P) # Get canonical dir. path
  # Output the ultimate target's canonical path.
  # Note that we manually resolve paths ending in /. and /.. to make sure we
  # have a normalized path.
  if [[ $fname == '.' ]]; then
    command printf '%s\n' "${targetDir%/}"
  elif  [[ $fname == '..' ]]; then
    # Caveat: something like /var/.. will resolve to /private (assuming
    # /var@ -> /private/var), i.e. the '..' is applied AFTER canonicalization.
    command printf '%s\n' "$(command dirname -- "${targetDir}")"
  else
    command printf '%s\n' "${targetDir%/}/$fname"
  fi
)

# Determine ultimate script dir. using the helper function.
# Note that the helper function returns a canonical path.
scriptDir=$(dirname -- "$(rreadlink "$BASH_SOURCE")")

First you compile the regex, then you have to use it with match, find, or some other method to actually run it against some input.

import os
import re
import shutil

def test():
    os.chdir("C:/Users/David/Desktop/Test/MyFiles")
    files = os.listdir(".")
    os.mkdir("C:/Users/David/Desktop/Test/MyFiles2")
    pattern = re.compile(regex_txt, re.IGNORECASE)
    for x in (files):
        with open((x), 'r') as input_file:
            for line in input_file:
                if pattern.search(line):
                    shutil.copy(x, "C:/Users/David/Desktop/Test/MyFiles2")
                    break

Enabling Relation View in phpMyAdmin / MAMP

If you’re using MAMP for your database driven projects you’ll probably be using phpMyAdmin to administer your MySQL database if you’ve decided to go down that route. If you’re creating a database you might be wondering how to create relationships and foriegn keys for your tables.

Firstly you need to check that you have access to the Relation view. To do this open phpMyAdmin and select a database. You need to make sure your tables’ storage engine is set to use InnoDB. Click on a table within your database and choose the Operations tab. Make sure that the storage engine is set to use InnoDB and save your changes.

Now, go back to your table view and click the Structure tab. Depending on your version of phpMyAdmin you should see a link titled Relation view below the table structure. If you can see it you’re good to go. If you can’t you’ll need to follow the steps below to set phpMyAdmin to enable Relations view.

1. Find /Applications/MAMP/bin/phpMyAdmin/scripts/create_tables.sql
2. I left this file default but you can change the table name to anything you want. I left mine phpMyAdmin
3. Open phpMyAdmin and go to the Import tab.
4. Click the browse button and find the create_tables.sql file and then click Go.
5. The tables required for Relation view will be added to the database you specified.
6. Open /Applications/MAMP/bin/phpMyAdmin/config.inc.php

7. Find the Server(s) configuration code block and replace/uncomment the following code and fill in the values. If you left everything default in the create_tables.sql file then you should just cut and paste the lines below.

   $cfg['Servers'][$i]['pmadb'] = 'phpmyadmin';
   $cfg['Servers'][$i]['bookmarktable'] = 'pma_bookmark';
   $cfg['Servers'][$i]['relation'] = 'pma_relation';
   $cfg['Servers'][$i]['table_info'] = 'pma_table_info';
   $cfg['Servers'][$i]['table_coords'] = 'pma_table_coords';
   $cfg['Servers'][$i]['pdf_pages'] = 'pma_pdf_pages';
   $cfg['Servers'][$i]['column_info'] = 'pma_column_info';
   $cfg['Servers'][$i]['history'] = 'pma_history';
   

8. Save the file and restart MAMP and refresh your phpMyAdmin console.

9. Go to your database and view one of your tables in Structure mode. You should now see the Relation view link.

Source: http://newvibes.com/blog/enabling-relation-view-in-phpmyadmin-mamp/

If you don't want to use a separate JS library to create a custom control for that, you could use two confirm dialogs to do the checks:

if (confirm("Are you sure you want to quit?") ) {
    if (confirm("Save your work before leaving?") ) {
        // code here for save then leave (Yes)
    } else {
        //code here for no save but leave (No)
    }
} else {
    //code here for don't leave (Cancel)
}

The most straightforward and robust solution is to use command substitution, as other people wrote:

assign()
{
    local x
    x="Test"
    echo "$x"
}

x=$(assign) # This assigns string "Test" to x

The downside is performance as this requires a separate process.

The other technique suggested in this topic, namely passing the name of a variable to assign to as an argument, has side effects, and I wouldn't recommend it in its basic form. The problem is that you will probably need some variables in the function to calculate the return value, and it may happen that the name of the variable intended to store the return value will interfere with one of them:

assign()
{
    local x
    x="Test"
    eval "$1=\$x"
}

assign y # This assigns string "Test" to y, as expected

assign x # This will NOT assign anything to x in this scope
         # because the name "x" is declared as local inside the function

You might, of course, not declare internal variables of the function as local, but you really should always do it as otherwise you may, on the other hand, accidentally overwrite an unrelated variable from the parent scope if there is one with the same name.

One possible workaround is an explicit declaration of the passed variable as global:

assign()
{
    local x
    eval declare -g $1
    x="Test"
    eval "$1=\$x"
}

If name "x" is passed as an argument, the second row of the function body will overwrite the previous local declaration. But the names themselves might still interfere, so if you intend to use the value previously stored in the passed variable prior to write the return value there, be aware that you must copy it into another local variable at the very beginning; otherwise the result will be unpredictable! Besides, this will only work in the most recent version of BASH, namely 4.2. More portable code might utilize explicit conditional constructs with the same effect:

assign()
{
    if [[ $1 != x ]]; then
      local x
    fi
    x="Test"
    eval "$1=\$x"
}

Perhaps the most elegant solution is just to reserve one global name for function return values and use it consistently in every function you write.

Even if your compareTo is holds transitivity in theory, sometimes subtle bugs mess things up... such as floating point arithmetic error. It happened to me. this was my code:

public int compareTo(tfidfContainer compareTfidf) {
    //descending order
    if (this.tfidf > compareTfidf.tfidf)
        return -1;
    else if (this.tfidf < compareTfidf.tfidf)
        return 1;
    else
        return 0;

}   

The transitive property clearly holds, but for some reason I was getting the IllegalArgumentException. And it turns out that due to tiny errors in floating point arithmetic, the round-off errors where causing the transitive property to break where they shouldn't! So I rewrote the code to consider really tiny differences 0, and it worked:

public int compareTo(tfidfContainer compareTfidf) {
    //descending order
    if ((this.tfidf - compareTfidf.tfidf) < .000000001)
        return 0;
    if (this.tfidf > compareTfidf.tfidf)
        return -1;
    else if (this.tfidf < compareTfidf.tfidf)
        return 1;
    return 0;
}   

wait until this call is finish its executing

You will need to call AsyncTask.get() method for getting result back and make wait until doInBackground execution is not complete. but this will freeze Main UI thread if you not call get method inside a Thread.

To get result back in UI Thread start AsyncTask as :

String str_result= new RunInBackGround().execute().get();

Here is a simple example of scrapy with an AJAX request. Let see the site rubin-kazan.ru.

All messages are loaded with an AJAX request. My goal is to fetch these messages with all their attributes (author, date, ...):

When I analyze the source code of the page I can't see all these messages because the web page uses AJAX technology. But I can with Firebug from Mozilla Firefox (or an equivalent tool in other browsers) to analyze the HTTP request that generate the messages on the web page:

It doesn't reload the whole page but only the parts of the page that contain messages. For this purpose I click an arbitrary number of page on the bottom:

And I observe the HTTP request that is responsible for message body:

After finish, I analyze the headers of the request (I must quote that this URL I'll extract from source page from var section, see the code below):

And the form data content of the request (the HTTP method is "Post"):

And the content of response, which is a JSON file:

Which presents all the information I'm looking for.

From now, I must implement all this knowledge in scrapy. Let's define the spider for this purpose:

class spider(BaseSpider):
    name = 'RubiGuesst'
    start_urls = ['http://www.rubin-kazan.ru/guestbook.html']

    def parse(self, response):
        url_list_gb_messages = re.search(r'url_list_gb_messages="(.*)"', response.body).group(1)
        yield FormRequest('http://www.rubin-kazan.ru' + url_list_gb_messages, callback=self.RubiGuessItem,
                          formdata={'page': str(page + 1), 'uid': ''})

    def RubiGuessItem(self, response):
        json_file = response.body

In parse function I have the response for first request. In RubiGuessItem I have the JSON file with all information.

If you cannot upgrade jQuery and you are getting:

Uncaught Error: cannot call methods on dialog prior to initialization; attempted to call method 'close'

You can work around it like so:

$(selector).closest('.ui-dialog-content').dialog('close');

Or if you control the view and know no other dialogs should be in use at all on the entire page, you could do:

$('.ui-dialog-content').dialog('close');

I would only recommend doing this if using closest causes a performance issue. There are likely other ways to work around it without doing a global close on all dialogs.

Best source of information for all of your DOM woes

http://www.w3.org/TR/dom/#nodes

"Objects implementing the Document, DocumentFragment, DocumentType, Element, Text, ProcessingInstruction, or Comment interface (simply called nodes) participate in a tree."

http://www.w3.org/TR/dom/#element

"Element nodes are simply known as elements."

The following will unstage just the file you intended, which is what the OP asked.

git reset HEAD^ /path/to/file

You'll see something like the following...

Changes to be committed: (use "git reset HEAD ..." to unstage)

modified: /path/to/file

Changes not staged for commit: (use "git add ..." to update what will be committed) (use "git checkout -- ..." to discard changes in working directory)

modified: /path/to/file

• "Changes to be committed" is the previous version of the file before the commit. This will look like a deletion if the file never existed. If you commit this change, there will be a revision that reverts the change to the file in your branch.
• "Changes not staged for commit" is the change you committed, and the current state of the file

At this point, you can do whatever you like to the file, such as resetting to a different version.

When you're ready to commit:

git commit --amend -a

or (if you've got some other changes going on that you don't want to commit, yet)

git commit add /path/to/file
git commit --amend

This occurs due to the availability of the previous version of the Application, that is not installed on the device but its data is present in the device memory. So it fails to upgrade this uninstalled application data on the device

Try this :

Go to Device Settings ==> Apps(All Apps) ==> search your App OR search for 'client' ==> In App info screen , press the triple dots option on top right corner ==> select 'Uninstall for All Users' ==> a promt appears select 'OK'

It works for me every time this error occurs

This will prevent all logging from a third library which it used as decribed here https://docs.python.org/3/howto/logging.html#configuring-logging-for-a-library

logging.getLogger('somelogger').addHandler(logging.NullHandler())

You could move the common parts to another configuration file and include from both server contexts. This should work:

server {
  listen 80;
  server_name server1.example;
  ...
  include /etc/nginx/include.d/your-common-stuff.conf;
}

server {
  listen 80;
  server_name another-one.example;
  ...
  include /etc/nginx/include.d/your-common-stuff.conf;
}

Edit: Here's an example that's actually copied from my running server. I configure my basic server settings in /etc/nginx/sites-enabled (normal stuff for nginx on Ubuntu/Debian). For example, my main server bunkus.org's configuration file is /etc/nginx/sites-enabled and it looks like this:

server {
  listen   80 default_server;
  listen   [2a01:4f8:120:3105::101:1]:80 default_server;

  include /etc/nginx/include.d/all-common;
  include /etc/nginx/include.d/bunkus.org-common;
  include /etc/nginx/include.d/bunkus.org-80;
}

server {
  listen   443 default_server;
  listen   [2a01:4f8:120:3105::101:1]:443 default_server;

  include /etc/nginx/include.d/all-common;
  include /etc/nginx/include.d/ssl-common;
  include /etc/nginx/include.d/bunkus.org-common;
  include /etc/nginx/include.d/bunkus.org-443;
}

As an example here's the /etc/nginx/include.d/all-common file that's included from both server contexts:

index index.html index.htm index.php .dirindex.php;
try_files $uri $uri/ =404;

location ~ /\.ht {
  deny all;
}

location = /favicon.ico {
  log_not_found off;
  access_log off;
}

location ~ /(README|ChangeLog)$ {
  types { }
  default_type text/plain;
}

wstring myString = L"Hello $$ this is an example. By $$.";
wstring search = L"$$";
wstring replace = L"Tom";
for (int i = myString.find(search); i >= 0; i = myString.find(search))
    myString.replace(i, search.size(), replace);

Try This

SELECT Title  from #Movies
    SELECT CASE WHEN Title = '' THEN 'No Title' ELSE Title END AS Titile from #Movies

OR

SELECT [Id], [CategoryId], ISNULL(nullif(Title,''),'No data') as Title, [Director], [DateReleased] FROM #Movies

Run this through Valgrind and you might see an error.

As Falaina pointed out, valgrind does not detect many instances of stack corruption. I just tried the sample under valgrind, and it does indeed report zero errors. However, Valgrind can be instrumental in finding many other types of memory problems, it's just not particularly useful in this case unless you modify your bulid to include the --stack-check option. If you build and run the sample as

g++ --stack-check -W -Wall errorRange.cpp -o errorRange
valgrind ./errorRange

valgrind will report an error.

A "race condition" exists when multithreaded (or otherwise parallel) code that would access a shared resource could do so in such a way as to cause unexpected results.

Take this example:

for ( int i = 0; i < 10000000; i++ )
{
   x = x + 1; 
}

If you had 5 threads executing this code at once, the value of x WOULD NOT end up being 50,000,000. It would in fact vary with each run.

This is because, in order for each thread to increment the value of x, they have to do the following: (simplified, obviously)

Retrieve the value of x
Add 1 to this value
Store this value to x

Any thread can be at any step in this process at any time, and they can step on each other when a shared resource is involved. The state of x can be changed by another thread during the time between x is being read and when it is written back.

Let's say a thread retrieves the value of x, but hasn't stored it yet. Another thread can also retrieve the same value of x (because no thread has changed it yet) and then they would both be storing the same value (x+1) back in x!

Example:

Thread 1: reads x, value is 7
Thread 1: add 1 to x, value is now 8
Thread 2: reads x, value is 7
Thread 1: stores 8 in x
Thread 2: adds 1 to x, value is now 8
Thread 2: stores 8 in x

Race conditions can be avoided by employing some sort of locking mechanism before the code that accesses the shared resource:

for ( int i = 0; i < 10000000; i++ )
{
   //lock x
   x = x + 1; 
   //unlock x
}

Here, the answer comes out as 50,000,000 every time.

For more on locking, search for: mutex, semaphore, critical section, shared resource.

Update:

As of jQuery 1.6+ you should use prop() instead of attr() in this case.

The difference between attributes and properties can be important in specific situations. Before jQuery 1.6, the .attr() method sometimes took property values into account when retrieving some attributes, which could cause inconsistent behavior. As of jQuery 1.6, the .prop() method provides a way to explicitly retrieve property values, while .attr() retrieves attributes.

var theValue = "whatever";
$("#selectID").val( theValue ).prop('selected',true);

Original Answer:

If you want to select by the value of the option, REGARDLESS of its position (this example assumes you have an ID for your select):

var theValue = "whatever";
$("#selectID").val( theValue ).attr('selected',true);

You do not need to "unselect". That happens automatically when you select another.

Here's a good metrics plugin that displays number of lines of code and much more:

http://metrics.sourceforge.net/

It says it requires Eclipse 3.1, although I imagine they mean 3.1+

Here's another metrics plugin that's been tested on Ganymede:

http://eclipse-metrics.sourceforge.net

Had to add the service in the calling App.config file to have it work. Make sure that you but it after all . This seemed to work for me.

You can convert yourInt to bytes by using a ByteBuffer like this:

return ByteBuffer.allocate(4).putInt(yourInt).array();

Beware that you might have to think about the byte order when doing so.

Take a look at this Github issue:

https://github.com/facebook/react-native/issues/231

They are trying to require non-JSON files, in particular JSON. There is no method of doing this right now, so you either have to use AsyncStorage as @CocoOS mentioned, or you could write a small native module to do what you need to do.

This is probably happening because your log4j configuration is set to ERROR. Look for a log4j.properties file with contents like the following:

log4j.rootLogger=ERROR, CONSOLE

# console logging
log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender
log4j.appender.CONSOLE.Threshold=DEBUG
log4j.appender.CONSOLE.layout=org.apache.log4j.PatternLayout
log4j.appender.CONSOLE.layout.ConversionPattern=%d %-5p %-20.20t %-24c{1}: %m%n

The rootLogger is set to ERROR level here using a CONSOLE appender.

Note that some appenders like the console appender also have a Threshold property that can be used to overrule the rootLoggers level. You need to check both in this case.

Use this code, Working properly

CREATE PROCEDURE [dbo].[sp_delete_item]
@ItemId int = 0
@status bit OUT

AS
Begin
 DECLARE @cnt int;
 DECLARE @status int =0;
 SET NOCOUNT OFF
 SELECT @cnt =COUNT(Id) from ItemTransaction where ItemId = @ItemId
 if(@cnt = 1)
   Begin
     return @status;
   End
 else
  Begin
   SET @status =1;
    return @status;
 End
END

Execute SP

DECLARE @statuss bit;
EXECUTE  [dbo].[sp_delete_item] 6, @statuss output;
PRINT @statuss;

There is a way to do this without explicitly setting your SHELL variable to point to bash. This can be useful if you have many makefiles since SHELL isn't inherited by subsequent makefiles or taken from the environment. You also need to be sure that anyone who compiles your code configures their system this way.

If you run sudo dpkg-reconfigure dash and answer 'no' to the prompt, your system will not use dash as the default shell. It will then point to bash (at least in Ubuntu). Note that using dash as your system shell is a bit more efficient though.

What you want cannot be done, because plt.legend() places a legend in the current axes, in your case in the last one.

If, on the other hand, you can be content with placing a comprehensive legend in the last subplot, you can do like this

f, (ax1, ax2, ax3) = plt.subplots(3, sharex=True, sharey=True)
l1,=ax1.plot(x,y, color='r', label='Blue stars')
l2,=ax2.plot(x,y, color='g')
l3,=ax3.plot(x,y, color='b')
ax1.set_title('2012/09/15')
plt.legend([l1, l2, l3],["HHZ 1", "HHN", "HHE"])
plt.show()

Note that you pass to legend not the axes, as in your example code, but the lines as returned by the plot invocation.

PS

Of course you can invoke legend after each subplot, but in my understanding you already knew that and were searching for a method for doing it at once.

Here is a link to various solutions of your issue.

This is my favorite as it makes the most human readable sense:

The Star Wildcard Method

if [[ "$string" == *"$substring"* ]]; then
    return 1
fi
return 0

I'm guessing from your last question, asked 20 minutes before this one, that you are trying to parse (read and convert) the XML found through using GeoNames' FindNearestAddress.

If your XML is in a string variable called txt and looks like this:

<address>
  <street>Roble Ave</street>
  <mtfcc>S1400</mtfcc>
  <streetNumber>649</streetNumber>
  <lat>37.45127</lat>
  <lng>-122.18032</lng>
  <distance>0.04</distance>
  <postalcode>94025</postalcode>
  <placename>Menlo Park</placename>
  <adminCode2>081</adminCode2>
  <adminName2>San Mateo</adminName2>
  <adminCode1>CA</adminCode1>
  <adminName1>California</adminName1>
  <countryCode>US</countryCode>
</address>

Then you can parse the XML with Javascript DOM like this:

if (window.DOMParser)
{
    parser = new DOMParser();
    xmlDoc = parser.parseFromString(txt, "text/xml");
}
else // Internet Explorer
{
    xmlDoc = new ActiveXObject("Microsoft.XMLDOM");
    xmlDoc.async = false;
    xmlDoc.loadXML(txt);
}

And get specific values from the nodes like this:

//Gets house address number
xmlDoc.getElementsByTagName("streetNumber")[0].childNodes[0].nodeValue;

//Gets Street name
xmlDoc.getElementsByTagName("street")[0].childNodes[0].nodeValue;

//Gets Postal Code
xmlDoc.getElementsByTagName("postalcode")[0].childNodes[0].nodeValue;

JSFiddle

Feb. 2019 edit:

In response to @gaugeinvariante's concerns about xml with Namespace prefixes. Should you have a need to parse xml with Namespace prefixes, everything should work almost identically:

NOTE: this will only work in browsers that support xml namespace prefixes such as Microsoft Edge

// XML with namespace prefixes 's', 'sn', and 'p' in a variable called txt_x000D_
txt = `_x000D_
<address xmlns:p='example.com/postal' xmlns:s='example.com/street' xmlns:sn='example.com/streetNum'>_x000D_
  <s:street>Roble Ave</s:street>_x000D_
  <sn:streetNumber>649</sn:streetNumber>_x000D_
  <p:postalcode>94025</p:postalcode>_x000D_
</address>`;_x000D_
_x000D_
//Everything else the same_x000D_
if (window.DOMParser)_x000D_
{_x000D_
    parser = new DOMParser();_x000D_
    xmlDoc = parser.parseFromString(txt, "text/xml");_x000D_
}_x000D_
else // Internet Explorer_x000D_
{_x000D_
    xmlDoc = new ActiveXObject("Microsoft.XMLDOM");_x000D_
    xmlDoc.async = false;_x000D_
    xmlDoc.loadXML(txt);_x000D_
}_x000D_
_x000D_
//The prefix should not be included when you request the xml namespace_x000D_
//Gets "streetNumber" (note there is no prefix of "sn"_x000D_
console.log(xmlDoc.getElementsByTagName("streetNumber")[0].childNodes[0].nodeValue);_x000D_
_x000D_
//Gets Street name_x000D_
console.log(xmlDoc.getElementsByTagName("street")[0].childNodes[0].nodeValue);_x000D_
_x000D_
//Gets Postal Code_x000D_
console.log(xmlDoc.getElementsByTagName("postalcode")[0].childNodes[0].nodeValue);

You are not breaking code over multiple lines, but rather a single identifier. There is a difference.

For your issue, try

R> setwd(paste("~/a/very/long/path/here",
               "/and/then/some/more",
               "/and/then/some/more",
               "/and/then/some/more", sep=""))

which also illustrates that it is perfectly fine to break code across multiple lines.

If the types of the parameters are all the same (varchar2 for example), you can have a package like this which will do the following:

CREATE OR REPLACE PACKAGE testuser.test_pkg IS

   TYPE assoc_array_varchar2_t IS TABLE OF VARCHAR2(4000) INDEX BY BINARY_INTEGER;

   PROCEDURE your_proc(p_parm IN assoc_array_varchar2_t);

END test_pkg;

CREATE OR REPLACE PACKAGE BODY testuser.test_pkg IS

   PROCEDURE your_proc(p_parm IN assoc_array_varchar2_t) AS
   BEGIN
      FOR i IN p_parm.first .. p_parm.last
      LOOP
         dbms_output.put_line(p_parm(i));
      END LOOP;

   END;

END test_pkg;

Then, to call it you'd need to set up the array and pass it:

DECLARE
  l_array testuser.test_pkg.assoc_array_varchar2_t;
BEGIN
  l_array(0) := 'hello';
  l_array(1) := 'there';  

  testuser.test_pkg.your_proc(l_array);
END;
/

You need some form of iteration here, as val (except when called with a function) only works on the first element:

$("input[placeholder]").val($("input[placeholder]").attr("placeholder"));

should be:

$("input[placeholder]").each( function () {
    $(this).val( $(this).attr("placeholder") );
});

or

$("input[placeholder]").val(function() {
    return $(this).attr("placeholder");
});

Busy waiting won't be a severe drawback if it is short. In my case there was the need to give visual feedback to the user by flashing a control (it is a chart control that can be copied to clipboard, which changes its background for some milliseconds). It works fine this way:

using System.Threading;
...
Clipboard.SetImage(bm);   // some code
distribution_chart.BackColor = Color.Gray;
Application.DoEvents();   // ensure repaint, may be not needed
Thread.Sleep(50);
distribution_chart.BackColor = Color.OldLace;
....

import java.io.IOException;
import java.lang.ProcessBuilder;

public class handlingexe {
    public static void main(String[] args) throws IOException {
        ProcessBuilder p = new ProcessBuilder();
        System.out.println("Started EXE");
        p.command("C:\\Users\\AppData\\Local\\Google\\Chrome\\Application\\chrome.exe");   

        p.start();
        System.out.println("Started EXE"); 
    }
}

For integers, there is no difference between pre- and post-increment.

If i is an object of a non-trivial class, then ++i is generally preferred, because the object is modified and then evaluated, whereas i++ modifies after evaluation, so requires a copy to be made.

You can also implement a contains method with foldLeft, it's pretty awesome. I just love foldLeft algorithms.

For example:

object ContainsWithFoldLeft extends App {

  val list = (0 to 10).toList
  println(contains(list, 10)) //true
  println(contains(list, 11)) //false

  def contains[A](list: List[A], item: A): Boolean = {
    list.foldLeft(false)((r, c) => c.equals(item) || r)
  }
}

An IEnumerator is a thing that can enumerate: it has the Current property and the MoveNext and Reset methods (which in .NET code you probably won't call explicitly, though you could).

An IEnumerable is a thing that can be enumerated...which simply means that it has a GetEnumerator method that returns an IEnumerator.

Which do you use? The only reason to use IEnumerator is if you have something that has a nonstandard way of enumerating (that is, of returning its various elements one-by-one), and you need to define how that works. You'd create a new class implementing IEnumerator. But you'd still need to return that IEnumerator in an IEnumerable class.

For a look at what an enumerator (implementing IEnumerator<T>) looks like, see any Enumerator<T> class, such as the ones contained in List<T>, Queue<T>, or Stack<T>. For a look at a class implementing IEnumerable, see any standard collection class.

your description is rather confusing; directly concatenating the decimal values doesn't seem useful in most contexts. the following code will cast each letter to an 8-bit character, and THEN concatenate. this is how standard ASCII encoding works

def ASCII(s):
    x = 0
    for i in xrange(len(s)):
        x += ord(s[i])*2**(8 * (len(s) - i - 1))
    return x

DECLARE @id INT 
SET @id = 0 
UPDATE cartemp
SET @id = CarmasterID = @id + 1 
GO

Since IntelliJ 2016, the location is File | Settings | Build, Execution, Deployment | Compiler | Build process heap size.

Maybe you can try this:

int function(){
Scanner input = new Scanner(System.in);   
System.out.print("Enter an integer between 1-100: ");   
int range;
while(true){   
    if(input.hasNextInt()){   
    range = input.nextInt();
    if(0<=range && range <= 100)
        break;
    else
        continue;
    }
    input.nextLine();  //Comsume the garbage value
    System.out.println("Enter an integer between 1-100:");
}
return range;
}

The android create avd command is deprecated. It's now recommended to use avdmanager instead to launch emulators from the command line.

First, create a new emulator if one doesn't already exist:

avdmanager create avd --name "MyEmulator" -k "system-images;android-
26;google_apis;x86"

This assumes that you already have an X86 system image installed that matches API 26, and has the Google APIs installed.

You can then launch the emulator with emulator @MyEmulator.

use:

$scope.users.length;

Instead of:

$scope.users.lenght;

And next time "spell-check" your code.

document.forms[0].elements[0].focus();

This can be refined using a loop to eg. not focus certain types of field, disabled fields and so on. Better may be to add a class="autofocus" to the field you actually do want focused, and loop over forms[i].elements[j] looking for that className.

Anyhow: it's not normally a good idea to do this on every page. When you focus an input the user loses the ability to eg. scroll the page from the keyboard. If unexpected, this can be annoying, so only auto-focus when you're pretty sure that using the form field is going to be what the user wants to do. ie. if you're Google.

Or, using your EOF markers, you need to quote the initial marker so expansion won't be done:

#-----v---v------
cat <<'EOF' >> brightup.sh
#!/bin/bash
curr=`cat /sys/class/backlight/intel_backlight/actual_brightness`
if [ $curr -lt 4477 ]; then
   curr=$((curr+406));
   echo $curr  > /sys/class/backlight/intel_backlight/brightness;
fi
EOF

IHTH

Solved myself. Done some small structural changes also. Route from Component1 to Component2 is done by a single <router-outlet>. Component2 to Comonent3 and Component4 is done by multiple <router-outlet name= "xxxxx"> The resulting contents are :

Component1.html

<nav>
    <a routerLink="/two" class="dash-item">Go to 2</a>
</nav>
    <router-outlet></router-outlet>

Component2.html

 <a [routerLink]="['/two', {outlets: {'nameThree': ['three']}}]">In Two...Go to 3 ...       </a>
 <a [routerLink]="['/two', {outlets: {'nameFour': ['four']}}]">   In Two...Go to 4 ...</a>

 <router-outlet name="nameThree"></router-outlet>
 <router-outlet name="nameFour"></router-outlet>

The '/two' represents the parent component and ['three']and ['four'] represents the link to the respective children of component2 . Component3.html and Component4.html are the same as in the question.

router.module.ts

const routes: Routes = [
{
    path: '',
    redirectTo: 'one',
    pathMatch: 'full'
},
{
    path: 'two',
    component: ClassTwo, children: [

        {
            path: 'three',
            component: ClassThree,
            outlet: 'nameThree'
        },
        {
            path: 'four',
            component: ClassFour,
            outlet: 'nameFour'
        }
    ]
},];

You cannot specify that it's always a file. If you don't need xcopy's other features, why not just use regular copy?

Visit https://developers.google.com/mobile/add and try to fill "Android package name". In some cases it can write error: "Invalid Android package name".

In https://developer.android.com/studio/build/application-id.html it is written:

And although the application ID looks like a traditional Java package name, the naming rules for the application ID are a bit more restrictive:

• It must have at least two segments (one or more dots).
• Each segment must start with a letter.
• All characters must be alphanumeric or an underscore [a-zA-Z0-9_].

So, "0com.example.app" and "com.1example.app" are errors.

Make sure your two build.gradle and settings.gradle files are in the correct directories as stated in https://developer.android.com/studio/build/index.html

Then open "as existing project" in Visual Studio

Gradle is very finicky about this.

In addition to options suggested by others I can recommend the fmt library which implements string formatting similar to str.format in Python and String.Format in C#. Here's an example:

std::string a = "test";
std::string b = "text.txt";
std::string c = "text1.txt";
std::string result = fmt::format("{0} {1} > {2}", a, b, c);

Disclaimer: I'm the author of this library.

* How to Download and install CodeBlocks.* ( I have already downloaded )

***How to solve the CodeBlocks environment error.

1. Go to "Settings"----"Compiler"----"Selected compiler"( GNU GCC Compiler ).

2. Then, Selected "Toolchain executables".

3. Now, "( C:\Program Files (x86)\CodeBlocks\MinGW )"

See Video : https://youtu.be/Tb1VnXs60Lg

Bitwise operations, including bit shift, are fundamental to low-level hardware or embedded programming. If you read a specification for a device or even some binary file formats, you will see bytes, words, and dwords, broken up into non-byte aligned bitfields, which contain various values of interest. Accessing these bit-fields for reading/writing is the most common usage.

A simple real example in graphics programming is that a 16-bit pixel is represented as follows:

  bit | 15| 14| 13| 12| 11| 10| 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1  | 0 |
      |       Blue        |         Green         |       Red          |

To get at the green value you would do this:

 #define GREEN_MASK  0x7E0
 #define GREEN_OFFSET  5

 // Read green
 uint16_t green = (pixel & GREEN_MASK) >> GREEN_OFFSET;

Explanation

In order to obtain the value of green ONLY, which starts at offset 5 and ends at 10 (i.e. 6-bits long), you need to use a (bit) mask, which when applied against the entire 16-bit pixel, will yield only the bits we are interested in.

#define GREEN_MASK  0x7E0

The appropriate mask is 0x7E0 which in binary is 0000011111100000 (which is 2016 in decimal).

uint16_t green = (pixel & GREEN_MASK) ...;

To apply a mask, you use the AND operator (&).

uint16_t green = (pixel & GREEN_MASK) >> GREEN_OFFSET;

After applying the mask, you'll end up with a 16-bit number which is really just a 11-bit number since its MSB is in the 11th bit. Green is actually only 6-bits long, so we need to scale it down using a right shift (11 - 6 = 5), hence the use of 5 as offset (#define GREEN_OFFSET 5).

Also common is using bit shifts for fast multiplication and division by powers of 2:

 i <<= x;  // i *= 2^x;
 i >>= y;  // i /= 2^y;

The stdout stream is line buffered by default, so will only display what's in the buffer after it reaches a newline (or when it's told to). You have a few options to print immediately:

Print to stderrinstead using fprintf (stderr is unbuffered by default):

fprintf(stderr, "I will be printed immediately");

Flush stdout whenever you need it to using fflush:

printf("Buffered, will be flushed");
fflush(stdout); // Will now print everything in the stdout buffer

Edit: From Andy Ross's comment below, you can also disable buffering on stdout by using setbuf:

setbuf(stdout, NULL);

or its secure version setvbuf as explained here

setvbuf(stdout, NULL, _IONBF, 0); 

The first form, when used with an API that returns Boolean and compared against Boolean.FALSE, will never throw a NullPointerException.

The second form, when used with the java.util.Map interface, also, will never throw a NullPointerException because it returns a boolean and not a Boolean.

If you aren't concerned about consistent coding idioms, then you can pick the one you like, and in this concrete case it really doesn't matter. If you do care about consistent coding, then consider what you want to do when you check a Boolean that may be NULL.

$num = array (0 => array ('id' => '20110209172713', 'Date' => '2011-02-09', 'Weight' => '200'),
          1 => array ('id' => '20110209172747', 'Date' => '2011-02-09', 'Weight' => '180'),
          2 => array ('id' => '20110209172827', 'Date' => '2011-02-09', 'Weight' => '175'),
          3 => array ('id' => '20110211204433', 'Date' => '2011-02-11', 'Weight' => '195'));

    foreach($num as $key => $val)   
    {                       
        $weight[] = $val['Weight'];
    }

     echo max($weight);
     echo min($weight);

I was using a playbook like this to test my roles locally:

---
- hosts: localhost
  roles:
     - role: .

but this stopped working with Ansible v2.2.

I debugged the aforementioned solution of

---
- hosts: all
  tasks:
    - name: Find out playbooks path
      shell: pwd
      register: playbook_path_output
    - debug: var=playbook_path_output.stdout

and it produced my home directory and not the "current working directory"

I settled with

---
- hosts: all
  roles:
    - role: '{{playbook_dir}}'

per the solution above.

You can use the short way for installation dependencies only for development as follows:

npm i -D <dependencies-names>