Java versions before version 7 allow for these three combinations of try-catch-finally...
try - catch
try - catch - finally
try - finally
finally
block will be always executed no matter of what's going on in the try
or/and catch
block. so if there is no catch
block, the exception won't be handled here.
However, you will still need an exception handler somewhere in your code - unless you want your application to crash completely of course. It depends on the architecture of your application exactly where that handler is.
- Java try block must be followed by either catch or finally block.
- For each try block there can be zero or more catch blocks, but only one finally block.
- The finally block will not be executed if program exits(either by calling System.exit() or by causing a fatal error that causes the process to abort).
Using delphi professionally for some years taught me to safeguard my cleanup routines using finally. Delphi pretty much enforces the use of finally to clean up any resources created before the try block, lest you cause a memory leak. This is also how Java, Python and Ruby works.
resource = create_resource
try:
use resource
finally:
resource.cleanup
and resource will be cleaned up regardless of what you do between try and finally. Also, it won't be cleaned up if execution never reaches the try
block. (i.e. create_resource
itself throws an exception) It makes your code "exception safe".
As to why you actually need a finally block, not all languages do. In C++ where you have automatically called destructors which enforce cleanup when an exception unrolls the stack. I think this is a step up in the direction of cleaner code compared to try...finally languages.
{
type object1;
smart_pointer<type> object1(new type());
} // destructors are automagically called here in LIFO order so no finally required.
Thanks to @user2630576 and @Ed.S.
the following worked a treat:
BACKUP LOG [database] TO DISK = 'D:\database.bak'
GO
ALTER DATABASE [database] SET RECOVERY SIMPLE
use [database]
declare @log_File_Name varchar(200)
select @log_File_Name = name from sysfiles where filename like '%LDF'
declare @i int = FILE_IDEX ( @log_File_Name)
dbcc shrinkfile ( @i , 50)
ALTER DATABASE [database] SET RECOVERY FULL
Use widget as PasswordInput
from django import forms
class UserForm(forms.ModelForm):
password = forms.CharField(widget=forms.PasswordInput)
class Meta:
model = User
You can not really add the x-iframe in your HTML body as it has to be provided by the site owner and it lies within the server rules.
What you can probably do is create a PHP file which loads the content of target URL and iframe that php URL, this should work smoothly.
Some minor additional content for setting programmatically:
Label textLabel = new Label() {
AutoSize = false,
TextAlign = ContentAlignment.MiddleCenter,
Dock = DockStyle.None,
Left = 10,
Width = myDialog.Width - 10
};
Dockstyle and Content alignment may differ from your needs. For example, for a simple label on a wpf form I use DockStyle.None.
I've continued to research this item myself, and it does appear to remain beyond us at this point.
I even tried buying a Apple Composite AV Cable, but it doesn't capture screen, just video playing like YouTube, etc.
So I decided to go with the iShowU path and that has worked out well so far.
Thanks Guys!
stat
Absolute path of a single file:
stat -c %n "$PWD"/foo/bar
It can be done in two ways:
1.Use clone Git
2.You can set it up manually by rearranging folders given in it. make a two separate folder 'src' and 'res' and place appropriate classes and xml file given by library. and then import project from eclipse and make it as library, that's it.
The answer is yes. In short, it is a subject alternative name (SAN) certificate that contains IPs where you would typically see DNS entries. The certificate type is not limited to Public IPs - that restriction is only imposed by a signing authority rather than the technology. I just wanted to clarify that point. I suspect you really just want to get rid of that pesky insecure prompt on your internal websites and devices without the cost and hassle of giving them DNS names then paying for a CA to issue a cert every year or two. You should NOT be trying to convince the world that your IP address is a reputable website and folks should feel comfortable providing their payment information. Now that we have established why no reputable organization wants to issue this type of certificate, lets just do it ourselves with a self signed SAN certificate. Internally I have a trusted certificate that is deployed to all of our hosts, then I sign this type of certificate with it and all devices become trusted. Doing that here is beyond the scope of the question but I think it relevant to the discussion as the question and solution go hand in hand. To be concise, here is how to generate an individual self signed SAN certificate with IP addresses. Expand the IP list to include your entire subnet and use one cert for everything.
#!/bin/bash
#using: OpenSSL 1.1.1c FIPS 28 May 2019 / CentOS Linux release 8.2.2004
C=US ; ST=Confusion ; L=Anywhere ; O=Private\ Subnet ; [email protected]
BITS=2048
CN=RFC1918
DOM=company.com
SUBJ="/C=$C/ST=$ST/L=$L/O=$O/CN=$CN.$DOM"
openssl genrsa -out ip.key $BITS
SAN='\n[SAN]\nsubjectAltName=IP:192.168.1.0,IP:192.168.1.1,IP:192.168.1.2,IP:192.168.1.3,IP:192.168.1.4,IP:192.168.1.5,IP:192.168.1.6,IP:192.168.1.7,IP:192.168.1.8,IP:192.168.1.9,IP:192.168.1.10'
cp /etc/pki/tls/openssl.cnf /tmp/openssl.cnf
echo -e "$SAN" >> /tmp/openssl.cnf
openssl req -subj "$SUBJ" -new -x509 -days 10950 \
-key ip.key -out ip.crt -batch \
-set_serial 168933982 \
-config /tmp/openssl.cnf \
-extensions SAN
openssl x509 -in ip.crt -noout -text
Add a hidden reset button :
<input id="Reset1" type="reset" value="reset" class="hidden" />
Click the reset button to clear the input.
$("#Reset1").click();
Since the tests will be instantiated like a Spring bean too, you just need to implement the ApplicationContextAware interface:
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = {"/services-test-config.xml"})
public class MySericeTest implements ApplicationContextAware
{
@Autowired
MyService service;
...
@Override
public void setApplicationContext(ApplicationContext context)
throws BeansException
{
// Do something with the context here
}
}
As to your bonus question, try if (jQuery.inArray(jQuery("input:first").val(), ar) < 0)
Here's another data.table
solution, since which.max
does not work on characters
library(data.table)
group <- data.table(Subject=ID, pt=Value, Event=Event)
group[, .SD[order(pt, decreasing = TRUE) == 1], by = Subject]
Using docker-compose, I accomplished this by creating a service that mounts the volumes that I need and committing the image of the container. Then, in the subsequent service, I rely on the previously committed image, which has all of the data stored at mounted locations. You will then have have to copy these files to their ultimate destination, as host mounted directories do not get committed when running a docker commit
command
You don't have to use docker-compose to accomplish this, but it makes life a bit easier
# docker-compose.yml
version: '3'
services:
stage:
image: alpine
volumes:
- /host/machine/path:/tmp/container/path
command: bash -c "cp -r /tmp/container/path /final/container/path"
setup:
image: stage
# setup.sh
# Start "stage" service
docker-compose up stage
# Commit changes to an image named "stage"
docker commit $(docker-compose ps -q stage) stage
# Start setup service off of stage image
docker-compose up setup
You have to drop the constraint before drop your table.
You can use those queries to find all FKs in your table and find the FKs in the tables in which your table is used.
Declare @SchemaName VarChar(200) = 'Your Schema name'
Declare @TableName VarChar(200) = 'Your Table Name'
-- Find FK in This table.
SELECT
' IF EXISTS (SELECT * FROM sys.foreign_keys WHERE object_id =
OBJECT_ID(N''' +
'[' + OBJECT_SCHEMA_NAME(FK.parent_object_id) + '].[' + FK.name + ']'
+ ''') AND parent_object_id = OBJECT_ID(N''' +
'[' + OBJECT_SCHEMA_NAME(FK.parent_object_id) + '].[' +
OBJECT_NAME(FK.parent_object_id) + ']' + ''')) ' +
'ALTER TABLE ' + OBJECT_SCHEMA_NAME(FK.parent_object_id) +
'.[' + OBJECT_NAME(FK.parent_object_id) +
'] DROP CONSTRAINT ' + FK.name
, S.name , O.name, OBJECT_NAME(FK.parent_object_id)
FROM sys.foreign_keys AS FK
INNER JOIN Sys.objects As O
ON (O.object_id = FK.parent_object_id )
INNER JOIN SYS.schemas AS S
ON (O.schema_id = S.schema_id)
WHERE
O.name = @TableName
And S.name = @SchemaName
-- Find the FKs in the tables in which this table is used
SELECT
' IF EXISTS (SELECT * FROM sys.foreign_keys WHERE object_id =
OBJECT_ID(N''' +
'[' + OBJECT_SCHEMA_NAME(FK.parent_object_id) + '].[' + FK.name + ']'
+ ''') AND parent_object_id = OBJECT_ID(N''' +
'[' + OBJECT_SCHEMA_NAME(FK.parent_object_id) + '].[' +
OBJECT_NAME(FK.parent_object_id) + ']' + ''')) ' +
' ALTER TABLE ' + OBJECT_SCHEMA_NAME(FK.parent_object_id) +
'.[' + OBJECT_NAME(FK.parent_object_id) +
'] DROP CONSTRAINT ' + FK.name
, S.name , O.name, OBJECT_NAME(FK.parent_object_id)
FROM sys.foreign_keys AS FK
INNER JOIN Sys.objects As O
ON (O.object_id = FK.referenced_object_id )
INNER JOIN SYS.schemas AS S
ON (O.schema_id = S.schema_id)
WHERE
O.name = @TableName
And S.name = @SchemaName
In my case, restarting SQL Server Service was enough to resolve the issue.
Visual Basic has a nice function : ReDim Preserve
.
Someone has kindly written an equivalent function - you can find it here. I think it does exactly what you are asking for (and you're not re-inventing the wheel - you're copying someone else's)...
Code:
if [[ -e $1 && ! -e $2 ]]; then
mkdir --parents --verbose -- "$(dirname -- "$2")"
fi
mv --verbose -- "$1" "$2"
Example:
arguments: "d1" "d2/sub"
mkdir: created directory 'd2'
renamed 'd1' -> 'd2/sub'
insert
is not a recommended way - it is one of the ways to insert into map. The difference with operator[]
is that the insert
can tell whether the element is inserted into the map. Also, if your class has no default constructor, you are forced to use insert
. operator[]
needs the default constructor because the map checks if the element exists. If it doesn't then it creates one using default constructor and returns a reference (or const reference to it).Because map containers do not allow for duplicate key values, the insertion operation checks for each element inserted whether another element exists already in the container with the same key value, if so, the element is not inserted and its mapped value is not changed in any way.
$("a.more").click(function() {
$.fancybox({
'padding' : 0,
'autoScale' : false,
'transitionIn' : 'none',
'transitionOut' : 'none',
'title' : this.title,
'width' : 680,
'height' : 495,
'href' : this.href.replace(new RegExp("watch\\?v=", "i"), 'v/'),
'type' : 'swf', // <--add a comma here
'swf' : {'allowfullscreen':'true'} // <-- flashvars here
});
return false;
});
In my version of Git [1], every Git submodule has a name
and a path
. They don't necessarily have to be the same [2]. Getting both in a reliable way, without checking out the submodules first (git update --init
), is a tricky bit of shell wizardry.
names
I didn't find a way how to achieve this using git config
or any other git
command. Therefore we are back to regex on .gitmodules
(super ugly). But it seems to be somewhat safe since git
limits the possible code space allowed for submodule names
. In addition, since you probably want to use this list for further shell processing, the solution below separate entries with NULL
-bytes (\0
).
$ sed -nre \
's/^\[submodule \"(.*)\"]$/\1\x0/p' \
"$(git rev-parse --show-toplevel)/.gitmodules" \
| tr -d '\n' \
| xargs -0 -n1 printf "%b\0"
And in your script:
#!/usr/bin/env bash
while IFS= read -rd '' submodule_name; do
echo submodule name: "${submodule_name}"
done < <(
sed -nre \
's/^\[submodule \"(.*)\"]$/\1\x0/p' \
"$(git rev-parse --show-toplevel)/.gitmodules" \
| tr -d '\n' \
| xargs -0 -n1 printf "%b\0"
)
Note: read -rd ''
requires bash
and won't work with sh
.
paths
In my approach I try not to process the output from git config --get-regexp
with awk
, tr
, sed
, ... but instead pass it a zero byte separated back to git config --get
. This is to avoid problems with newlines, spaces and other special characters (e.g. Unicode) in the submodule paths
. In addition, since you probably want to use this list for further shell processing, the solution below separate entries with NULL
-bytes (\0
).
$ git config --null --file .gitmodules --name-only --get-regexp '\.path$' \
| xargs -0 -n1 git config --null --file .gitmodules --get
For example, in a Bash script you could then:
#!/usr/bin/env bash
while IFS= read -rd '' submodule_path; do
echo submodule path: "${submodule_path}"
done < <(
git config --null --file .gitmodules --name-only --get-regexp '\.path$' \
| xargs -0 -n1 git config --null --file .gitmodules --get
)
Note: read -rd ''
requires bash
and won't work with sh
.
$ git --version
git version 2.22.0
name
and path
Set up test repository:
$ git init test-name-path
$ cd test-name-path/
$ git checkout -b master
$ git commit --allow-empty -m 'test'
$ git submodule add ./ submodule-name
Cloning into '/tmp/test-name-path/submodule-name'...
done.
$ ls
submodule-name
$ cat .gitmodules
[submodule "submodule-name"]
path = submodule-name
url = ./
Move submodule to make name
and path
diverge:
$ git mv submodule-name/ submodule-path
$ ls
submodule-path
$ cat .gitmodules
[submodule "submodule-name"]
path = submodule-path
url = ./
$ git config --file .gitmodules --get-regexp '\.path$'
submodule.submodule-name.path submodule-path
Set up test repository:
$ git init test
$ cd test/
$ git checkout -b master
$ git commit --allow-empty -m 'test'
$
$ git submodule add ./ simplename
Cloning into '/tmp/test/simplename'...
done.
$
$ git submodule add ./ 'name with spaces'
Cloning into '/tmp/test/name with spaces'...
done.
$
$ git submodule add ./ 'future-name-with-newlines'
Cloning into '/tmp/test/future-name-with-newlines'...
done.
$ git mv future-name-with-newlines/ 'name
> with
> newlines'
$
$ git submodule add ./ 'name-with-unicode-'
Cloning into '/tmp/test/name-with-unicode-'...
done.
$
$ git submodule add ./ sub/folder/submodule
Cloning into '/tmp/test/sub/folder/submodule'...
done.
$
$ git submodule add ./ name.with.dots
Cloning into '/tmp/test/name.with.dots'...
done.
$
$ git submodule add ./ 'name"with"double"quotes'
Cloning into '/tmp/test/name"with"double"quotes'...
done.
$
$ git submodule add ./ "name'with'single'quotes"
Cloning into '/tmp/test/name'with'single'quotes''...
done.
$ git submodule add ./ 'name]with[brackets'
Cloning into '/tmp/test/name]with[brackets'...
done.
$ git submodule add ./ 'name-with-.path'
Cloning into '/tmp/test/name-with-.path'...
done.
.gitmodules
:
[submodule "simplename"]
path = simplename
url = ./
[submodule "name with spaces"]
path = name with spaces
url = ./
[submodule "future-name-with-newlines"]
path = name\nwith\nnewlines
url = ./
[submodule "name-with-unicode-"]
path = name-with-unicode-
url = ./
[submodule "sub/folder/submodule"]
path = sub/folder/submodule
url = ./
[submodule "name.with.dots"]
path = name.with.dots
url = ./
[submodule "name\"with\"double\"quotes"]
path = name\"with\"double\"quotes
url = ./
[submodule "name'with'single'quotes"]
path = name'with'single'quotes
url = ./
[submodule "name]with[brackets"]
path = name]with[brackets
url = ./
[submodule "name-with-.path"]
path = name-with-.path
url = ./
names
$ sed -nre \
's/^\[submodule \"(.*)\"]$/\1\x0/p' \
"$(git rev-parse --show-toplevel)/.gitmodules" \
| tr -d '\n' \
| xargs -0 -n1 printf "%b\0" \
| xargs -0 -n1 echo submodule name:
submodule name: simplename
submodule name: name with spaces
submodule name: future-name-with-newlines
submodule name: name-with-unicode-
submodule name: sub/folder/submodule
submodule name: name.with.dots
submodule name: name"with"double"quotes
submodule name: name'with'single'quotes
submodule name: name]with[brackets
submodule name: name-with-.path
paths
$ git config --null --file .gitmodules --name-only --get-regexp '\.path$' \
| xargs -0 -n1 git config --null --file .gitmodules --get \
| xargs -0 -n1 echo submodule path:
submodule path: simplename
submodule path: name with spaces
submodule path: name
with
newlines
submodule path: name-with-unicode-
submodule path: sub/folder/submodule
submodule path: name.with.dots
submodule path: name"with"double"quotes
submodule path: name'with'single'quotes
submodule path: name]with[brackets
submodule path: name-with-.path
set PYTHONIOENCODING=utf-8
set PYTHONLEGACYWINDOWSSTDIO=utf-8
You may or may not need to set that second environment variable PYTHONLEGACYWINDOWSSTDIO
.
Alternatively, this can be done in code (although it seems that doing it through env vars is recommended):
sys.stdin.reconfigure(encoding='utf-8')
sys.stdout.reconfigure(encoding='utf-8')
Additionally: Reproducing this error was a bit of a pain, so leaving this here too in case you need to reproduce it on your machine:
set PYTHONIOENCODING=windows-1252
set PYTHONLEGACYWINDOWSSTDIO=windows-1252
Since you are asking about .NET, you should change the parameter from Long
to Integer
. .NET's Integer is 32-bit. (Classic VB's integer was only 16-bit.)
Declare Sub Sleep Lib "kernel32.dll" (ByVal Milliseconds As Integer)
Really though, the managed method isn't difficult...
System.Threading.Thread.CurrentThread.Sleep(5000)
Be careful when you do this. In a forms application, you block the message pump and what not, making your program to appear to have hanged. Rarely is sleep
a good idea.
Try the following statement:
select distinct A.[Tag],
count(A.[Tag]) as TAG_COUNT,
(SELECT count(*) FROM [TagTbl] AS B WHERE A.[Tag]=B.[Tag] AND B.[ID]>0)
from [TagTbl] AS A GROUP BY A.[Tag]
The first field will be the tag the second will be the whole count the third will be the positive ones count.
Use Dictionary Items:
{% for key, value in my_dictionay.items %}
<li>{{ key }} : {{ value }}</li>
{% endfor %}
This code works for me:
Dim script As String = "<script type=""text/javascript"">window.open('" & URL.ToString & "');</script>"
ClientScript.RegisterStartupScript(Me.GetType, "openWindow", script)
build
and listener
objects are presenting during system groovy execution. You can do this:
def myVar = build.getEnvironment(listener).get('myVar')
My problem was that i had nested form tags. After removing the inner one, worked out for me.
I found the answer.
Cast integer to string:
myOldIntValue|string
Cast string to integer:
myOldStrValue|int
At least in PostgreSQL you can use the column number in the resultset in your GROUP BY clause:
SELECT
itemName as ItemName,
substring(itemName, 1,1) as FirstLetter,
Count(itemName)
FROM table1
GROUP BY 1, 2
Of course this starts to be a pain if you are doing this interactively and you edit the query to change the number or order of columns in the result. But still.
In the case of local variables, I tend to avoid this. It causes visual clutter, and is generally unnecessary - a function should be short enough or focus on a single impact to let you quickly see that you are modify something that shouldn't be.
In the case of magic numbers, I would put them as a constant private field anyway rather than in the code.
I only use final in situations where it is necessary (e.g., passing values to anonymous classes).
Or:
SELECT SUM(foo), DATE(mydate) mydate FROM a_table GROUP BY mydate;
More efficient (I think.) Because you don't have to cast mydate twice per row.
clear:both
makes the element drop below any floated elements that precede it in the document.
You can also use clear:left
or clear:right
to make it drop below only those elements that have been floated left or right.
+------------+ +--------------------+
| | | |
| float:left | | without clear |
| | | |
| | +--------------------+
| | +--------------------+
| | | |
| | | with clear:right |
| | | (no effect here, |
| | | as there is no |
| | | float:right |
| | | element) |
| | | |
| | +--------------------+
| |
+------------+
+---------------------+
| |
| with clear:left |
| or clear:both |
| |
+---------------------+
As the other answers have described, lit
and typedLit
are how to add constant columns to DataFrames. lit
is an important Spark function that you will use frequently, but not for adding constant columns to DataFrames.
You'll commonly be using lit
to create org.apache.spark.sql.Column
objects because that's the column type required by most of the org.apache.spark.sql.functions
.
Suppose you have a DataFrame with a some_date
DateType column and would like to add a column with the days between December 31, 2020 and some_date
.
Here's your DataFrame:
+----------+
| some_date|
+----------+
|2020-09-23|
|2020-01-05|
|2020-04-12|
+----------+
Here's how to calculate the days till the year end:
val diff = datediff(lit(Date.valueOf("2020-12-31")), col("some_date"))
df
.withColumn("days_till_yearend", diff)
.show()
+----------+-----------------+
| some_date|days_till_yearend|
+----------+-----------------+
|2020-09-23| 99|
|2020-01-05| 361|
|2020-04-12| 263|
+----------+-----------------+
You could also use lit
to create a year_end
column and compute the days_till_yearend
like so:
import java.sql.Date
df
.withColumn("yearend", lit(Date.valueOf("2020-12-31")))
.withColumn("days_till_yearend", datediff(col("yearend"), col("some_date")))
.show()
+----------+----------+-----------------+
| some_date| yearend|days_till_yearend|
+----------+----------+-----------------+
|2020-09-23|2020-12-31| 99|
|2020-01-05|2020-12-31| 361|
|2020-04-12|2020-12-31| 263|
+----------+----------+-----------------+
Most of the time, you don't need to use lit
to append a constant column to a DataFrame. You just need to use lit
to convert a Scala type to a org.apache.spark.sql.Column
object because that's what's required by the function.
See the datediff
function signature:
As you can see, datediff
requires two Column arguments.
This isn't a function of bash
, as all the shell does is open the file in question and then pass the file descriptor as the standard output of the script. What you need to do is make sure output is flushed from your script more frequently than you currently are.
In Perl for example, this could be accomplished by setting:
$| = 1;
See perlvar for more information on this.
I tried in online compiler https://www.onlinegdb.com/online_c++_compiler
int main()
{
cout<<"Hello World";
int x = 10;
int *p = &x;
printf("\nAddress of x is %p\n", &x); // 0x7ffc7df0ea54
printf("Address of p is %p\n", p); // 0x7ffc7df0ea54
return 0;
}
A character in Java is a Unicode code-unit which is treated as an unsigned number. So if you perform c = (char)b
the value you get is 2^16 - 56 or 65536 - 56.
Or more precisely, the byte is first converted to a signed integer with the value 0xFFFFFFC8
using sign extension in a widening conversion. This in turn is then narrowed down to 0xFFC8
when casting to a char
, which translates to the positive number 65480
.
From the language specification:
5.1.4. Widening and Narrowing Primitive Conversion
First, the byte is converted to an int via widening primitive conversion (§5.1.2), and then the resulting int is converted to a char by narrowing primitive conversion (§5.1.3).
To get the right point use char c = (char) (b & 0xFF)
which first converts the byte value of b
to the positive integer 200
by using a mask, zeroing the top 24 bits after conversion: 0xFFFFFFC8
becomes 0x000000C8
or the positive number 200
in decimals.
Above is a direct explanation of what happens during conversion between the byte
, int
and char
primitive types.
If you want to encode/decode characters from bytes, use Charset
, CharsetEncoder
, CharsetDecoder
or one of the convenience methods such as new String(byte[] bytes, Charset charset)
or String#toBytes(Charset charset)
. You can get the character set (such as UTF-8 or Windows-1252) from StandardCharsets
.
import org.apache.spark.sql.functions.desc
df.orderBy(desc("columnname1"),desc("columnname2"),asc("columnname3"))
You have to increase client_max_body_size in nginx.conf
file. This is the basic step. But if your backend laravel
then you have to do some changes in the php.ini
file as well. It depends on your backend. Below I mentioned file location and condition name.
sudo vim /etc/nginx/nginx.conf.
After open the file adds this into HTTP section.
client_max_body_size 100M;
You can nest table-cell directly within table. You muslt have a table. Starting eith table-row does not work. Try it with this HTML:
<html>
<head>
<style type="text/css">
.table {
display: table;
width: 100%;
}
.tr {
display: table-row;
width: 100%;
}
.td {
display: table-cell;
}
</style>
</head>
<body>
<div class="table">
<div class="tr">
<div class="td">
X
</div>
<div class="td">
X
</div>
<div class="td">
X
</div>
</div>
</div>
<div class="tr">
<div class="td">
X
</div>
<div class="td">
X
</div>
<div class="td">
X
</div>
</div>
<div class="table">
<div class="td">
X
</div>
<div class="td">
X
</div>
<div class="td">
X
</div>
</div>
</body>
</html>
if you want to use only arraylist then I am worried there is no better way which will create a huge performance benefit. But by only using arraylist i would check before adding into the list like following
void addToList(String s){
if(!yourList.contains(s))
yourList.add(s);
}
In this cases using a Set is suitable.
I've used Flexcel in the past and it was great. But this was more for programmatically creating and updating excel worksheets.
I've seen this many times over the last decade and just had it again. There are many problems that result in the same error.
One cause is a renaming of files. If you're working with .cshtml files, check all namespaces within those files and within the Views\web.config file. For web forms, rename Default.aspx (related .cs and designer files are automatically renamed). The codebehind changes but the Inherits line in the markup doesn't. Change it manually. Double check the designer page. Sometimes (VS2005-8?) the designer page doesn't reflect a change in the namespace. Haven't seen this in 2010+.
Another issue is when it all works in VS or on your local PC but not when you deploy. This could be because the deployment environment isn't structured the same. For example, the error occurs if you place your code in a virtual directory under an application folder, but it doesn't occur if you create a new application folder and place all of your files in there. I don't understand this one, as I've had the new child/virtual folder set with the same permissions (or so I think) and (I believe) the application pool should work the same for everything in a given application folder.
In my case I've also had a bin folder with assemblies that are updated from other assemblies on the IIS server. Again, ensuring that these are run in a separate application folder resulted in success.
HTH
This issue was actually being caused by NestedFragments. Basically most fragments we have extend a HostedFragment which in turn extends a CompatFragment. Having these nested fragments caused issues which eventually were solved by another developer on the project.
He was doing some low level stuff like bit switching to get this working so I'm not too sure of the actual final solution
Setting src attribute didn't work for me. The iframe didn't display the url.
What worked for me was:
window.open(url, "nameof_iframe");
Hope it helps someone.
You're very close already, you just need to return the new object that you want. In this case, the same one except with the launches value incremented by 10:
var rockets = [_x000D_
{ country:'Russia', launches:32 },_x000D_
{ country:'US', launches:23 },_x000D_
{ country:'China', launches:16 },_x000D_
{ country:'Europe(ESA)', launches:7 },_x000D_
{ country:'India', launches:4 },_x000D_
{ country:'Japan', launches:3 }_x000D_
];_x000D_
_x000D_
var launchOptimistic = rockets.map(function(elem) {_x000D_
return {_x000D_
country: elem.country,_x000D_
launches: elem.launches+10,_x000D_
} _x000D_
});_x000D_
_x000D_
console.log(launchOptimistic);
_x000D_
CSS Solution:
.h2{
font-size: 2vw
}
@media (min-width: 700px) {
.h2{
/* Minimum font size */
font-size: 14px
}
}
@media (max-width: 1200px) {
.h2{
/* Maximum font size */
font-size: 24px
}
}
Just in case if some need scss mixin:
///
/// Viewport sized typography with minimum and maximum values
///
/// @author Eduardo Boucas (@eduardoboucas)
///
/// @param {Number} $responsive - Viewport-based size
/// @param {Number} $min - Minimum font size (px)
/// @param {Number} $max - Maximum font size (px)
/// (optional)
/// @param {Number} $fallback - Fallback for viewport-
/// based units (optional)
///
/// @example scss - 5vw font size (with 50px fallback),
/// minumum of 35px and maximum of 150px
/// @include responsive-font(5vw, 35px, 150px, 50px);
///
@mixin responsive-font($responsive, $min, $max: false, $fallback: false) {
$responsive-unitless: $responsive / ($responsive - $responsive + 1);
$dimension: if(unit($responsive) == 'vh', 'height', 'width');
$min-breakpoint: $min / $responsive-unitless * 100;
@media (max-#{$dimension}: #{$min-breakpoint}) {
font-size: $min;
}
@if $max {
$max-breakpoint: $max / $responsive-unitless * 100;
@media (min-#{$dimension}: #{$max-breakpoint}) {
font-size: $max;
}
}
@if $fallback {
font-size: $fallback;
}
font-size: $responsive;
}
In JQuery you can call
$("form:first").trigger("submit")
Don't know if that is much better. I think form.submit(); is pretty universal.
this worked for me:
<span class="button" data-dismiss="modal" aria-label="Close">cancel</span>
use this link modal close
You can use (hidden) cells as variables. E.g., you could hide Column C, set C1 to
=20
and use it as
=c1*20
Alternatively you can write VBA Macros which set and read a global variable.
Edit: AKX renders my Answer partially incorrect. I had no idea you could name cells in Excel.
For files in a directory, you can use things like:
if exist *.csv echo "csv file found"
or
if not exist *.csv goto nofile
I know the OP specifically mentioned jQuery but I wanted to put an answer here to introduce people to the helpful Underscore library if they are not aware of it already.
By leveraging the keys
method in the Underscore library, you can simply do the following:
_.keys(foo) #=> ["alfa", "beta"]
Plus, there's a plethora of other useful functions that are worth perusing.
String...
is the same as String[]
import java.lang.*;
public class MyClassTest {
//public static void main(String... args) {
public static void main(String[] args) {
for(String str: args) {
System.out.println(str);
}
}
}
this is better approach and its successful :
Actions oAction = new Actions(driver);
oAction.moveToElement(Webelement);
oAction.contextClick(Webelement).build().perform(); /* this will perform right click */
WebElement elementOpen = driver.findElement(By.linkText("Open")); /*This will select menu after right click */
elementOpen.click();
The []
makes no sense in the moment of making an ArrayList of Integers because I imagine you just want to add Integer values.
Just use
List<Integer> list = new ArrayList<>();
to create the ArrayList and it will work.
I just do:
<marquee scrollamount="A number">Text here</marquee>
Above solution does not work for me , I have tried following and it is working in all browsers.
simply made a fake ajax call, it will make a entry into referer header.
var request;
if (window.XMLHttpRequest) { // Mozilla, Safari, ...
request = new XMLHttpRequest();
} else if (window.ActiveXObject) { // IE
try {
request = new ActiveXObject('Msxml2.XMLHTTP');
} catch (e) {
try {
request = new ActiveXObject('Microsoft.XMLHTTP');
} catch (e) {}
}
}
request.open("GET", url, true);
request.send();
Here is a cookbook answer to supplement @Chris' answer, CPython has moved to GitHub and the Mercurial repository will no longer be updated:
git clone https://github.com/python/cpython.git
Code will checkout to a subdirectory called cpython
-> cd cpython
print()
...egrep --color=always -R 'print' | less -R
Python/bltinmodule.c
-> builtin_print()
Enjoy.
You can access afterRender
hook by using plugins
.
And here are all the plugin api available.
In html file:
<html>
<canvas id="myChart"></canvas>
<div id="imgWrap"></div>
</html>
In js file:
var chart = new Chart(ctx, {
...,
plugins: [{
afterRender: function () {
// Do anything you want
renderIntoImage()
},
}],
...,
});
const renderIntoImage = () => {
const canvas = document.getElementById('myChart')
const imgWrap = document.getElementById('imgWrap')
var img = new Image();
img.src = canvas.toDataURL()
imgWrap.appendChild(img)
canvas.style.display = 'none'
}
I found this difference which forced me to use a mixed bag of phonegap and cordova cli commands when building my app:
'phonegap plugin add' couldn't handle command line parameters correctly, whereas 'cordova platform add' works flawlessly
The command I use is:
'cordova plugin add https://github.com/crittercism/PhoneGap.git --variable IOS_APP_ID="[my_license_key]"
Note I am using phonegap 3.5
Http GET returning 204 is perfectly fine, and so is returning 404.
The important thing is that you define the design standards/guidelines for your API, so that all your endpoints use status codes consistently.
For example:
GET /complaints/year/2019/month/04
may return 204 if there are no complaints filed in April 2019. This is not an error on the client side, so we return a success status code (204). OTOH, GET /complaints/12345
may return 404 if complaint number 12345 doesn't exist.On Ubuntu, you can set proxy by using
export http_proxy=http://username:password@proxy:port
export https_proxy=http://username:password@proxy:port
or if you are having SOCKS error use
export all_proxy=http://username:password@proxy:port
Then run pip
sudo -E pip3 install {packageName}
You also can use
NSString *className = [[myObject class] description];
on any NSObject
Since mongo-connector now appears dead, my company decided to build a tool for using Mongo change streams to output to Elasticsearch.
Our initial results look promising. You can check it out at https://github.com/electionsexperts/mongo-stream. We're still early in development, and would welcome suggestions or contributions.
addEventListener
is the proper DOM method to use for attaching event handlers.
Internet Explorer (up to version 8) used an alternate attachEvent
method.
Internet Explorer 9 supports the proper addEventListener
method.
The following should be an attempt to write a cross-browser addEvent
function.
function addEvent(evnt, elem, func) {
if (elem.addEventListener) // W3C DOM
elem.addEventListener(evnt,func,false);
else if (elem.attachEvent) { // IE DOM
elem.attachEvent("on"+evnt, func);
}
else { // No much to do
elem["on"+evnt] = func;
}
}
array filter function from php:
array_filter ( $array, $callback_function, $flag )
$array - It is the input array
$callback_function - The callback function to use, If the callback function returns true, the current value from array is returned into the result array.
$flag - It is optional parameter, it will determine what arguments are sent to callback function. If this parameter empty then callback function will take array values as argument. If you want to send array key as argument then use $flag as ARRAY_FILTER_USE_KEY. If you want to send both keys and values you should use $flag as ARRAY_FILTER_USE_BOTH .
For Example : Consider simple array
$array = array("a"=>1, "b"=>2, "c"=>3, "d"=>4, "e"=>5);
If you want to filter array based on the array key, We need to use ARRAY_FILTER_USE_KEY as third parameter of array function array_filter.
$get_key_res = array_filter($array,"get_key",ARRAY_FILTER_USE_KEY );
If you want to filter array based on the array key and array value, We need to use ARRAY_FILTER_USE_BOTH as third parameter of array function array_filter.
$get_both = array_filter($array,"get_both",ARRAY_FILTER_USE_BOTH );
Sample Callback functions:
function get_key($key)
{
if($key == 'a')
{
return true;
} else {
return false;
}
}
function get_both($val,$key)
{
if($key == 'a' && $val == 1)
{
return true;
} else {
return false;
}
}
It will output
Output of $get_key is :Array ( [a] => 1 )
Output of $get_both is :Array ( [a] => 1 )
This is an extension function I wrote in Kotlin to use with the RecyclerView
(based on @Paul Woitaschek answer):
fun RecyclerView.smoothSnapToPosition(position: Int, snapMode: Int = LinearSmoothScroller.SNAP_TO_START) {
val smoothScroller = object : LinearSmoothScroller(this.context) {
override fun getVerticalSnapPreference(): Int = snapMode
override fun getHorizontalSnapPreference(): Int = snapMode
}
smoothScroller.targetPosition = position
layoutManager?.startSmoothScroll(smoothScroller)
}
Use it like this:
myRecyclerView.smoothSnapToPosition(itemPosition)
Enumerator
includes Enumerable
. Since 2.1
, Enumerable
also has a method #to_h
. That's why, we can write :-
a = ["item 1", "item 2", "item 3", "item 4"]
a.each_slice(2).to_h
# => {"item 1"=>"item 2", "item 3"=>"item 4"}
Because #each_slice
without block gives us Enumerator
, and as per the above explanation, we can call the #to_h
method on the Enumerator
object.
This won't help you step through code or break on errors, but it's a useful way to get the same debug console for your project on all browsers.
myLog = function() {
if (!myLog._div) { myLog.createDiv(); }
var logEntry = document.createElement('span');
for (var i=0; i < arguments.length; i++) {
logEntry.innerHTML += myLog.toJson(arguments[i]) + '<br />';
}
logEntry.innerHTML += '<br />';
myLog._div.appendChild(logEntry);
}
myLog.createDiv = function() {
myLog._div = document.body.appendChild(document.createElement('div'));
var props = {
position:'absolute', top:'10px', right:'10px', background:'#333', border:'5px solid #333',
color: 'white', width: '400px', height: '300px', overflow: 'auto', fontFamily: 'courier new',
fontSize: '11px', whiteSpace: 'nowrap'
}
for (var key in props) { myLog._div.style[key] = props[key]; }
}
myLog.toJSON = function(obj) {
if (typeof window.uneval == 'function') { return uneval(obj); }
if (typeof obj == 'object') {
if (!obj) { return 'null'; }
var list = [];
if (obj instanceof Array) {
for (var i=0;i < obj.length;i++) { list.push(this.toJson(obj[i])); }
return '[' + list.join(',') + ']';
} else {
for (var prop in obj) { list.push('"' + prop + '":' + this.toJson(obj[prop])); }
return '{' + list.join(',') + '}';
}
} else if (typeof obj == 'string') {
return '"' + obj.replace(/(["'])/g, '\\$1') + '"';
} else {
return new String(obj);
}
}
myLog('log statement');
myLog('logging an object', { name: 'Marcus', likes: 'js' });
This is put together pretty hastily and is a bit sloppy, but it's useful nonetheless and can be improved easily!
If you rotate point (px, py)
around point (ox, oy)
by angle theta you'll get:
p'x = cos(theta) * (px-ox) - sin(theta) * (py-oy) + ox
p'y = sin(theta) * (px-ox) + cos(theta) * (py-oy) + oy
this is an easy way to rotate a point in 2D.
In addition to Will Dean's version, the following are common for whole buffer initialization:
char s[10] = {'\0'};
or
char s[10];
memset(s, '\0', sizeof(s));
or
char s[10];
strncpy(s, "", sizeof(s));
You want to execute code where the id is not (1 or 2 or 3), but the OR operator does not distribute over id. The only way to say what you want is to say
the id is not 1, and the id is not 2, and the id is not 3.
which translates to
if (id !== 1 && id !== 2 && id !== 3)
or alternatively for something more pythonesque:
if (!(id in [,1,2,3]))
Overriding and Return Types, and Covariant Returns
the subclass must define a method that matches the inherited version exactly. Or, as of Java 5, you're allowed to change the return type in the
class Alpha {
Alpha doStuff(char c) {
return new Alpha();
}
}
class Beta extends Alpha {
Beta doStuff(char c) { // legal override in Java 1.5
return new Beta();
}
} }
As of Java 5, this code will compile. If you were to attempt to compile this code with a 1.4 compiler will say attempting to use incompatible return type – sandeep1987 1 min ago
The spread operator spread the Array into the separate arguments of a function.
let iterableObjB = [1,2,3,4]
function (...iterableObjB) //turned into
function (1,2,3,4)
Yes, it is fine to use both:
'''
Comments
'''
and
"""
Comments
"""
But, the only thing you all need to remember while running in an IDE, is you have to 'RUN' the entire file to be accepted as multiple lines codes. Line by line 'RUN' won't work properly and will show an error.
I always include the js files in the head of the html document and them in the action just call the javascript function. Something like this:
action="javascript:checkout()"
You try this?
Don't forget include the script reference in the html head.
I don't know cause of that works in firefox. Regards.
Steps to generate Create table DDLs for all the tables in the Hive database and export into text file to run later:
step 1)
create a .sh
file with the below content, say hive_table_ddl.sh
#!/bin/bash
rm -f tableNames.txt
rm -f HiveTableDDL.txt
hive -e "use $1; show tables;" > tableNames.txt
wait
cat tableNames.txt |while read LINE
do
hive -e "use $1;show create table $LINE;" >>HiveTableDDL.txt
echo -e "\n" >> HiveTableDDL.txt
done
rm -f tableNames.txt
echo "Table DDL generated"
step 2)
Run the above shell script by passing 'db name' as paramanter
>bash hive_table_dd.sh <<databasename>>
output :
All the create table statements of your DB will be written into the HiveTableDDL.txt
v22.1
of appcompat-v7
introduced some new possibilities. Now it's possible to assign a specific theme only to one view.
Deprecated use of app:theme for styling Toolbar. You can now use android:theme for toolbars on all API level 7 and higher devices and android:theme support for all widgets on API level 11 and higher devices.
So instead of setting the desired color in a global theme, we create a new one and assign it only to the Button
Example:
<style name="MyColorButton" parent="Theme.AppCompat.Light.DarkActionBar">
<item name="colorButtonNormal">@color/myColor</item>
</style>
And use this style as theme of your Button
<Button
style="?android:attr/buttonStyleSmall"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Button1"
android:theme="@style/MyColorButton"/>
Complete Code for android Flashlight App
Manifest
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.user.flashlight"
android:versionCode="1"
android:versionName="1.0">
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="17"/>
<uses-permission android:name="android.permission.CAMERA" />
<uses-feature android:name="android.hardware.camera"/>
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name=".MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
XML
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="OFF"
android:id="@+id/button"
android:layout_centerVertical="true"
android:layout_centerHorizontal="true"
android:onClick="turnFlashOnOrOff" />
</RelativeLayout>
MainActivity.java
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.pm.PackageManager;
import android.hardware.Camera;
import android.hardware.Camera.Parameters;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import java.security.Policy;
public class MainActivity extends AppCompatActivity {
Button button;
private Camera camera;
private boolean isFlashOn;
private boolean hasFlash;
Parameters params;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
button = (Button) findViewById(R.id.button);
hasFlash = getApplicationContext().getPackageManager().hasSystemFeature(PackageManager.FEATURE_CAMERA_FLASH);
if(!hasFlash) {
AlertDialog alert = new AlertDialog.Builder(MainActivity.this).create();
alert.setTitle("Error");
alert.setMessage("Sorry, your device doesn't support flash light!");
alert.setButton("OK", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
finish();
}
});
alert.show();
return;
}
getCamera();
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (isFlashOn) {
turnOffFlash();
button.setText("ON");
} else {
turnOnFlash();
button.setText("OFF");
}
}
});
}
private void getCamera() {
if (camera == null) {
try {
camera = Camera.open();
params = camera.getParameters();
}catch (Exception e) {
}
}
}
private void turnOnFlash() {
if(!isFlashOn) {
if(camera == null || params == null) {
return;
}
params = camera.getParameters();
params.setFlashMode(Parameters.FLASH_MODE_TORCH);
camera.setParameters(params);
camera.startPreview();
isFlashOn = true;
}
}
private void turnOffFlash() {
if (isFlashOn) {
if (camera == null || params == null) {
return;
}
params = camera.getParameters();
params.setFlashMode(Parameters.FLASH_MODE_OFF);
camera.setParameters(params);
camera.stopPreview();
isFlashOn = false;
}
}
@Override
protected void onDestroy() {
super.onDestroy();
}
@Override
protected void onPause() {
super.onPause();
// on pause turn off the flash
turnOffFlash();
}
@Override
protected void onRestart() {
super.onRestart();
}
@Override
protected void onResume() {
super.onResume();
// on resume turn on the flash
if(hasFlash)
turnOnFlash();
}
@Override
protected void onStart() {
super.onStart();
// on starting the app get the camera params
getCamera();
}
@Override
protected void onStop() {
super.onStop();
// on stop release the camera
if (camera != null) {
camera.release();
camera = null;
}
}
}
Neither of these is a perfect solution, but here are a couple things you could try:
exec >foo.log
tail -f foo.log &
# rest of your script
or
PIPE=tmp.fifo
mkfifo $PIPE
exec >$PIPE
tee foo.log <$PIPE &
# rest of your script
rm $PIPE
The second one would leave a pipe file sitting around if something goes wrong with your script, which may or may not be a problem (i.e. maybe you could rm
it in the parent shell afterwards).
This will work with iPad on Safari on iOS 7.1.x from my testing, I'm not sure about iOS 6 though. However, it will not work on Firefox. There is a jQuery plugin which aims to be cross browser compliant called jScrollPane.
Also, there is a duplicate post here on Stack Overflow which has some other details.
The simplest solution for the problem is do standard things in your controller or you can directely put it into ApplicationController
class ApplicationController < ActionController::Base
protect_from_forgery with: :exception, prepend: true
end
Alternatively here's a simple jQuery solution:
$('#menu-main > li > .dropdown-toggle').click(function () {
window.location = $(this).attr('href');
});
CLOCK_REALTIME
represents the machine's best-guess as to the current wall-clock, time-of-day time. As Ignacio and MarkR say, this means that CLOCK_REALTIME
can jump forwards and backwards as the system time-of-day clock is changed, including by NTP.
CLOCK_MONOTONIC
represents the absolute elapsed wall-clock time since some arbitrary, fixed point in the past. It isn't affected by changes in the system time-of-day clock.
If you want to compute the elapsed time between two events observed on the one machine without an intervening reboot, CLOCK_MONOTONIC
is the best option.
Note that on Linux, CLOCK_MONOTONIC
does not measure time spent in suspend, although by the POSIX definition it should. You can use the Linux-specific CLOCK_BOOTTIME
for a monotonic clock that keeps running during suspend.
If you are using csh
you can use:
/usr/bin/time --output=outfile -p $SHELL -c 'your command'
For example:
/usr/bin/time --output=outtime.txt -p csh -c 'cat file'
For Android 3.0 and higher only
When supporting Android 3.0 and higher only, you can define the action bar's background like this:
res/values/themes.xml
<?xml version="1.0" encoding="utf-8"?>
<resources>
<!-- the theme applied to the application or activity -->
<style name="CustomActionBarTheme" parent="@style/Theme.Holo.Light.DarkActionBar">
<item name="android:actionBarStyle">@style/MyActionBar</item>
</style>
<!-- ActionBar styles -->
<style name="MyActionBar" parent="@style/Widget.Holo.Light.ActionBar.Solid.Inverse">
<item name="android:background">#ff0000</item>
</style>
</resources>
For Android 2.1 and higher
When using the Support Library, your style XML file might look like this:
<?xml version="1.0" encoding="utf-8"?>
<resources>
<!-- the theme applied to the application or activity -->
<style name="CustomActionBarTheme" parent="@style/Theme.AppCompat.Light.DarkActionBar">
<item name="android:actionBarStyle">@style/MyActionBar</item>
<!-- Support library compatibility -->
<item name="actionBarStyle">@style/MyActionBar</item>
</style>
<!-- ActionBar styles -->
<style name="MyActionBar"
parent="@style/Widget.AppCompat.Light.ActionBar.Solid.Inverse">
<item name="android:background">@drawable/actionbar_background</item>
<!-- Support library compatibility -->
<item name="background">@drawable/actionbar_background</item>
</style>
</resources>
Then apply your theme to your entire app or individual activities:
for more details Documentaion
You already have an old copy of that database installed in Server Explorer. So its a simple naming collision in the Server Object Explorer / SQL server. You likely created the same database Catalog Name already before you decided to move it to the Apps_Data folder. So that Database name already exists and just needs to be deleted.
Just go into Visual Studio > View > SQL Server Object Explorer and delete the old database name and its connection. Retry your app again and it should install the .mdf file in App_Data and create the same exact database again in the Server Explorer.
You would need to do something like this. I am typing this off the top of my head, so this may not be 100% correct.
CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB(); CGContextRef context = CGBitmapContextCreate(NULL, 640, 360, 8, 4 * width, colorSpace, kCGImageAlphaPremultipliedFirst); CGColorSpaceRelease(colorSpace); CGContextDrawImage(context, CGRectMake(0,-160,640,360), cgImgFromAVCaptureSession); CGImageRef image = CGBitmapContextCreateImage(context); UIImage* myCroppedImg = [UIImage imageWithCGImage:image]; CGContextRelease(context);
I did this way:
<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
<item name="colorPrimary">@color/colorPrimary</item>
<item name="colorPrimaryDark">@color/colorPrimaryDark</item>
<item name="colorAccent">@color/colorAccent</item>
<item name="actionMenuTextAppearance">@style/MenuTextAppearance</item>
<item name="android:actionMenuTextAppearance">@style/MenuTextAppearance</item>
<item name="actionMenuTextColor">@color/colorAccent</item>
</style>
<style name="MenuTextAppearance" >
<item name="android:textAppearance">@android:style/TextAppearance.Large</item>
<item name="android:textSize">20sp</item>
<item name="android:textStyle">bold</item>
</style>
You need to change permissions on the folder bootstrap/css. Your super user may be able to access it but it doesn't mean apache or nginx have access to it, that's why you still need to change the permissions.
Tip: I usually make the apache/nginx's user group owner of that kind of folders and give 775 permission to it.
This is a quick example
plot(rnorm(30), xlab = expression(paste("4"^"th")))
No need to use custom extension functions anymore. IntRange has a random()
extension function out-of-the-box now.
val randomNumber = (0..10).random()
mmap
minimal POSIX 7 example
"Bus error" happens when the kernel sends SIGBUS
to a process.
A minimal example that produces it because ftruncate
was forgotten:
#include <fcntl.h> /* O_ constants */
#include <unistd.h> /* ftruncate */
#include <sys/mman.h> /* mmap */
int main() {
int fd;
int *map;
int size = sizeof(int);
char *name = "/a";
shm_unlink(name);
fd = shm_open(name, O_RDWR | O_CREAT, (mode_t)0600);
/* THIS is the cause of the problem. */
/*ftruncate(fd, size);*/
map = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
/* This is what generates the SIGBUS. */
*map = 0;
}
Run with:
gcc -std=c99 main.c -lrt
./a.out
Tested in Ubuntu 14.04.
POSIX describes SIGBUS
as:
Access to an undefined portion of a memory object.
The mmap spec says that:
References within the address range starting at pa and continuing for len bytes to whole pages following the end of an object shall result in delivery of a SIGBUS signal.
And shm_open
says that it generates objects of size 0:
The shared memory object has a size of zero.
So at *map = 0
we are touching past the end of the allocated object.
Unaligned stack memory accesses in ARMv8 aarch64
This was mentioned at: What is a bus error? for SPARC, but here I will provide a more reproducible example.
All you need is a freestanding aarch64 program:
.global _start
_start:
asm_main_after_prologue:
/* misalign the stack out of 16-bit boundary */
add sp, sp, #-4
/* access the stack */
ldr w0, [sp]
/* exit syscall in case SIGBUS does not happen */
mov x0, 0
mov x8, 93
svc 0
That program then raises SIGBUS on Ubuntu 18.04 aarch64, Linux kernel 4.15.0 in a ThunderX2 server machine.
Unfortunately, I can't reproduce it on QEMU v4.0.0 user mode, I'm not sure why.
The fault appears to be optional and controlled by the SCTLR_ELx.SA
and SCTLR_EL1.SA0
fields, I have summarized the related docs a bit further here.
None of the other solutions really fit my needs, and although Stefan Steiger's solution worked as I expected I found it a bit too verbose.
Following is my attempt:
/**_x000D_
* Highlight keywords inside a DOM element_x000D_
* @param {string} elem Element to search for keywords in_x000D_
* @param {string[]} keywords Keywords to highlight_x000D_
* @param {boolean} caseSensitive Differenciate between capital and lowercase letters_x000D_
* @param {string} cls Class to apply to the highlighted keyword_x000D_
*/_x000D_
function highlight(elem, keywords, caseSensitive = false, cls = 'highlight') {_x000D_
const flags = caseSensitive ? 'gi' : 'g';_x000D_
// Sort longer matches first to avoid_x000D_
// highlighting keywords within keywords._x000D_
keywords.sort((a, b) => b.length - a.length);_x000D_
Array.from(elem.childNodes).forEach(child => {_x000D_
const keywordRegex = RegExp(keywords.join('|'), flags);_x000D_
if (child.nodeType !== 3) { // not a text node_x000D_
highlight(child, keywords, caseSensitive, cls);_x000D_
} else if (keywordRegex.test(child.textContent)) {_x000D_
const frag = document.createDocumentFragment();_x000D_
let lastIdx = 0;_x000D_
child.textContent.replace(keywordRegex, (match, idx) => {_x000D_
const part = document.createTextNode(child.textContent.slice(lastIdx, idx));_x000D_
const highlighted = document.createElement('span');_x000D_
highlighted.textContent = match;_x000D_
highlighted.classList.add(cls);_x000D_
frag.appendChild(part);_x000D_
frag.appendChild(highlighted);_x000D_
lastIdx = idx + match.length;_x000D_
});_x000D_
const end = document.createTextNode(child.textContent.slice(lastIdx));_x000D_
frag.appendChild(end);_x000D_
child.parentNode.replaceChild(frag, child);_x000D_
}_x000D_
});_x000D_
}_x000D_
_x000D_
// Highlight all keywords found in the page_x000D_
highlight(document.body, ['lorem', 'amet', 'autem']);
_x000D_
.highlight {_x000D_
background: lightpink;_x000D_
}
_x000D_
<p>Hello world lorem ipsum dolor sit amet, consectetur adipisicing elit. Est vel accusantium totam, ipsum delectus et dignissimos mollitia!</p>_x000D_
<p>_x000D_
Lorem ipsum dolor sit amet, consectetur adipisicing elit. Numquam, corporis._x000D_
<small>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Accusantium autem voluptas perferendis dolores ducimus velit error voluptatem, qui rerum modi?</small>_x000D_
</p>
_x000D_
I would also recommend using something like escape-string-regexp if your keywords can have special characters that would need to be escaped in regexes:
const keywordRegex = RegExp(keywords.map(escapeRegexp).join('|')), flags);
This is for view controller reusability.
Your view controller shouldn't care if it is being presented as a modal, pushed on a navigation controller, or whatever. If your view controller dismisses itself, then you're assuming it is being presented modally. You won't be able to push that view controller onto a navigation controller.
By implementing a protocol, you let the parent view controller decide how it should be presented/pushed and dismissed/popped.
Here is another way to loop through XML elements using JDOM.
List<Element> nodeNodes = inputNode.getChildren();
if (nodeNodes != null) {
for (Element nodeNode : nodeNodes) {
List<Element> elements = nodeNode.getChildren(elementName);
if (elements != null) {
elements.size();
nodeNodes.removeAll(elements);
}
}
const static int newvals[] = {34,2,4,5,6};
std::copy(newvals, newvals+sizeof(newvals)/sizeof(newvals[0]), array);
Just create a data.frame
with 0 length variables
eg
nodata <- data.frame(x= numeric(0), y= integer(0), z = character(0))
str(nodata)
## 'data.frame': 0 obs. of 3 variables:
## $ x: num
## $ y: int
## $ z: Factor w/ 0 levels:
or to create a data.frame with 5 columns named a,b,c,d,e
nodata <- as.data.frame(setNames(replicate(5,numeric(0), simplify = F), letters[1:5]))
I am using MySQL 5.5.40. This version has the option --all-databases
mysqldump -u<username> -p<password> --all-databases --events > /tmp/all_databases__`date +%d_%b_%Y_%H_%M_%S`.sql
This command will create a complete backup of all databases in MySQL server to file named to current date-time.
Yes, you can overload main method in Java. you have to call the overloaded main method from the actual main method.
It's not that hard...
Check out this forum post:
http://www.pcreview.co.uk/forums/excel-not-recognizing-dates-dates-t3139469.html
The steps in short:
You can try just hidding the keyboard. Something like this:
InputMethodManager inputManager = (InputMethodManager) getSystemService(INPUT_METHOD_SERVICE);
inputManager.hideSoftInputFromWindow(this.getCurrentFocus().getWindowToken(), InputMethodManager.HIDE_NOT_ALWAYS);
First save your program as program.c
.
Now you need the compiler, so you need to go to App Store and install Xcode which is Apple's compiler and development tools. How to find App Store? Do a "Spotlight Search" by typing ⌘Space and start typing App Store
and hit Enter when it guesses correctly.
App Store looks like this:
Xcode looks like this on App Store:
Then you need to install the command-line tools in Terminal. How to start Terminal? You need to do another "Spotlight Search", which means you type ⌘Space and start typing Terminal
and hit Enter when it guesses Terminal
.
Now install the command-line tools like this:
xcode-select --install
Then you can compile your code with by simply running gcc
as in the next line without having to fire up the big, ugly software development GUI called Xcode
:
gcc -Wall -o program program.c
Note: On newer versions of OS X, you would use clang
instead of gcc
, like this:
clang program.c -o program
Then you can run it with:
./program
Hello, world!
If your program is C++, you'll probably want to use one of these commands:
clang++ -o program program.cpp
g++ -std=c++11 -o program program.cpp
g++-7 -std=c++11 -o program program.cpp
The V1 git man page had a reference about un-applying a stash. The excerpt is below.
The newer V2 git man page doesn't include any reference to un-applying a stash but the below still works well
Un-applying a Stash In some use case scenarios you might want to apply stashed changes, do some work, but then un-apply those changes that originally came from the stash. Git does not provide such a stash un-apply command, but it is possible to achieve the effect by simply retrieving the patch associated with a stash and applying it in reverse:
$ git stash show -p stash@{0} | git apply -R
Again, if you don’t specify a stash, Git assumes the most recent stash:
$ git stash show -p | git apply -R
You may want to create an alias and effectively add a stash-unapply command to your Git. For example:
$ git config --global alias.stash-unapply '!git stash show -p | git apply -R'
$ git stash apply
$ #... work work work
$ git stash-unapply
You are debugging two or more times. so the application may run more at a time. Then only this issue will occur. You should close all debugging applications using task-manager, Then debug again.
As mentioned by Seeker, the problem could have been that you setup the click()
function too soon. From your code snippet, we cannot know where you placed the script and whether it gets run at the right time.
An important point is to run such scripts after the document is ready. This is done by placing the click()
initialization within that other function as in:
jQuery(document).ready(function()
{
jQuery("body").click(function()
{
// ... your click code here ...
});
});
This is usually the best method, especially if you include your JavaScript code in your <head>
tag. If you include it at the very bottom of the page, then the ready()
function is less important, but it may still be useful.
A few solutions to choose from:
json_pp: command utility available in Linux systems for JSON decoding/encoding
echo '{"type":"Bar","id":"1","title":"Foo"}' | json_pp -json_opt pretty,canonical
{
"id" : "1",
"title" : "Foo",
"type" : "Bar"
}
You may want to keep the -json_opt pretty,canonical
argument for predictable ordering.
jq: lightweight and flexible command-line JSON processor. It is written in portable C, and it has zero runtime dependencies.
echo '{"type":"Bar","id":"1","title":"Foo"}' | jq '.'
{
"type": "Bar",
"id": "1",
"title": "Foo"
}
The simplest jq
program is the expression .
, which takes the input and produces it unchanged as output.
For additinal jq
options check the manual
with python:
echo '{"type":"Bar","id":"1","title":"Foo"}' | python -m json.tool
{
"id": "1",
"title": "Foo",
"type": "Bar"
}
echo '{"type":"Bar","id":"1","title":"Foo"}' | node -e "console.log( JSON.stringify( JSON.parse(require('fs').readFileSync(0) ), 0, 1 ))"
{
"type": "Bar",
"id": "1",
"title": "Foo"
}
As of IE6 I believe you cannot customize the scroll bar using those properties. The Chris Coyier article linked to above goes into nice detail about the options for webkit proprietary css for customizing the scroll bar.
If you really want a cross browser solution that you can fully customize you're going to have to use some JS. Here is a link to a nice plugin for it called FaceScroll: http://www.dynamicdrive.com/dynamicindex11/facescroll/index.htm
if byte1
is an 8-bit integer type then it's pointless - if it is more than 8 bits it will essentially give you the last 8 bits of the value:
0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
& 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1
-------------------------------
0 0 0 0 0 0 0 0 0 1 0 1 0 1 0 1
There is no operator, but there is a method.
Math.pow(2, 3) // 8.0
Math.pow(3, 2) // 9.0
FYI, a common mistake is to assume 2 ^ 3
is 2 to the 3rd power. It is not. The caret is a valid operator in Java (and similar languages), but it is binary xor.
I noticed some of the answers were not triggering the HTML5 required
attribute (as stuff was being executed on the action of clicking rather than the action of form send, causing to bypass it when the inputs were empty):
<form id='xform'></form>
with some inputs with the required attribute and place a <input type='submit'>
at the end.<input type='text' name='xconf' value='' required>
modal_1_accept
to the accept button.modal_2_accept
to the accept button.m2_Txt
to the displayed text holder.The JS to intercept before the form is sent:
$("#xform").submit(function(e){
var msg, conf, preventSend;
if($("#xform").attr("data-send")!=="ready"){
msg="Error."; //default error msg
preventSend=false;
conf=$("[name='xconf']").val().toLowerCase().replace(/^"|"$/g, "");
if(conf===""){
msg="The field is empty.";
preventSend=true;
}else if(conf!=="ok"){
msg="You didn't write \"ok\" correctly.";
preventSend=true;
}
if(preventSend){ //validation failed, show the error
$("#m2_Txt").html(msg); //displayed text on modal_2_errMsg
$("#modal_2_errMsg").modal("show");
}else{ //validation passed, now let's confirm the action
$("#modal_1_confirm").modal("show");
}
e.preventDefault();
return false;
}
});
`9. Also some stuff when clicking the Buttons from the modals:
$("#modal_1_accept").click(function(){
$("#modal_1_confirm").modal("hide");
$("#xform").attr("data-send", "ready").submit();
});
$("#modal_2_accept").click(function(){
$("#modal_2_errMsg").modal("hide");
});
Important Note: So just be careful if you add an extra way to show the modal, as simply clicking the accept button $("#modal_1_accept")
will assume the validation passed and it will add the "ready"
attribute:
$("#modal_1_confirm").modal("show");
is shown only when it passed
the validation, so clicking $("#modal_1_accept")
should be
unreachable without first getting the form validated.You can set your content-type header so clients know to expect json
w.Header().Set("Content-Type", "application/json")
Another way to marshal a struct to json is to build an encoder using the http.ResponseWriter
// get a payload p := Payload{d}
json.NewEncoder(w).Encode(p)
if you have
<span class="label label-default">New</span>
just add the style="font-size:XXpx;", ej.
<span class="label label-default" style="font-size:15px;">New</span>
There are at least 6 (!) ways to clone an array:
A.map(function(e){return e;});
There has been a huuuge BENCHMARKS thread, providing following information:
for blink browsers slice()
is the fastest method, concat()
is a bit slower, and while loop
is 2.4x slower.
for other browsers while loop
is the fastest method, since those browsers don't have internal optimizations for slice
and concat
.
This remains true in Jul 2016.
Below are simple scripts that you can copy-paste into your browser's console and run several times to see the picture. They output milliseconds, lower is better.
while loop
n = 1000*1000;
start = + new Date();
a = Array(n);
b = Array(n);
i = a.length;
while(i--) b[i] = a[i];
console.log(new Date() - start);
slice
n = 1000*1000;
start = + new Date();
a = Array(n);
b = a.slice();
console.log(new Date() - start);
Please note that these methods will clone the Array object itself, array contents however are copied by reference and are not deep cloned.
origAr == clonedArr //returns false
origAr[0] == clonedArr[0] //returns true
You can use the /s
switch for del
to delete in subfolders as well.
Example
del D:\test\*.* /s
Would delete all files under test including all files in all subfolders.
To remove folders use rd
, same switch applies.
rd D:\test\folder /s /q
rd
doesn't support wildcards *
though so if you want to recursively delete all subfolders under the test
directory you can use a for
loop.
for /r /d D:\test %a in (*) do rd %a /s /q
If you are using the for
option in a batch file remember to use 2 %
's instead of 1.
I ran into this error in some code where someone was calling exit() in one thread about the same time as main()
returned, so all the global/static constructors were being kicked off in two separate threads simultaneously.
This error also manifests as double free or corruption
, or a segfault/sig11 inside exit()
or inside malloc_consolidate
, and likely others. The call stack for the malloc_consolidate crash may resemble:
#0 0xabcdabcd in malloc_consolidate () from /lib/libc.so.6
#1 0xabcdabcd in _int_free () from /lib/libc.so.6
#2 0xabcdabcd in operator delete (...)
#3 0xabcdabcd in operator delete[] (...)
(...)
I couldn't get it to exhibit this problem while running under valgrind.
You can hide the modal and popup the window to review the carts in validateShipping() function itself.
function validateShipping(){
...
...
$('#product-options').modal('hide');
//pop the window to select items
}
I had the same issue and took a whole day to figure out the problem. This error message by Facebook SDK is very vague. I had this problem due to openURL: method being overwritten in MyApplication. I removed the overwritten method and facebook login worked fine.
Updated for Swift 3
This example will show two methods to programmatically add the following constraints the same as if doing it in the Interface Builder:
Width and Height
Center in Container
override func viewDidLoad() {
super.viewDidLoad()
// set up the view
let myView = UIView()
myView.backgroundColor = UIColor.blue
myView.translatesAutoresizingMaskIntoConstraints = false
view.addSubview(myView)
// Add constraints code here (choose one of the methods below)
// ...
}
// width and height
myView.widthAnchor.constraint(equalToConstant: 200).isActive = true
myView.heightAnchor.constraint(equalToConstant: 100).isActive = true
// center in container
myView.centerXAnchor.constraint(equalTo: view.centerXAnchor).isActive = true
myView.centerYAnchor.constraint(equalTo: view.centerYAnchor).isActive = true
// width and height
NSLayoutConstraint(item: myView, attribute: NSLayoutAttribute.width, relatedBy: NSLayoutRelation.equal, toItem: nil, attribute: NSLayoutAttribute.notAnAttribute, multiplier: 1, constant: 200).isActive = true
NSLayoutConstraint(item: myView, attribute: NSLayoutAttribute.height, relatedBy: NSLayoutRelation.equal, toItem: nil, attribute: NSLayoutAttribute.notAnAttribute, multiplier: 1, constant: 100).isActive = true
// center in container
NSLayoutConstraint(item: myView, attribute: NSLayoutAttribute.centerX, relatedBy: NSLayoutRelation.equal, toItem: view, attribute: NSLayoutAttribute.centerX, multiplier: 1, constant: 0).isActive = true
NSLayoutConstraint(item: myView, attribute: NSLayoutAttribute.centerY, relatedBy: NSLayoutRelation.equal, toItem: view, attribute: NSLayoutAttribute.centerY, multiplier: 1, constant: 0).isActive = true
NSLayoutConstraint
Style, however it is only available from iOS 9, so if you are supporting iOS 8 then you should still use NSLayoutConstraint
Style.You should maybe down the "-webkit-min-device-pixel-ratio" to 1.5 to catch all iPhones ?
@media only screen and (max-device-width: 480px), only screen and (min-device-width: 640px) and (max-device-width: 1136px) and (-webkit-min-device-pixel-ratio: 1.5) {
/* iPhone only */
}
Did you try format?
@font-face {
font-family: 'The name of the Font Family Here';
src: URL('font.ttf') format('truetype');
}
Read this article: http://css-tricks.com/snippets/css/using-font-face/
Also, might depend on browser as well.
Most efficient mapping of a one-to-one association You can avoid all these problems and get rid of the foreign key column by using the same primary key value for both associated entities. You can do that by annotating the owning side of the association with @MapsId.
@Entity
public class Book {
@Id
@GeneratedValue
private Long id;
@OneToOne(mappedBy = "book", fetch = FetchType.LAZY, optional = false)
private Manuscript manuscript;
...
}
@Entity
public class Manuscript {
@Id
private Long id;
@OneToOne
@MapsId
@JoinColumn(name = "id")
private Book book;
...
}
Book b = em.find(Book.class, 100L);
Manuscript m = em.find(Manuscript.class, b.getId());
I guess problem is in width attributes in table and td remove 'px' for example
<table border="0" cellpadding="0" cellspacing="0" width="580px" style="background-color: #0290ba;">
Should be
<table border="0" cellpadding="0" cellspacing="0" width="580" style="background-color: #0290ba;">
I used
diff -rqyl folder1 folder2 --exclude=node_modules
in my nodejs apps.
Then all you have to do is subtract that from total document height
jQuery(function () {
var documentHeight = jQuery(document).height();
var element = jQuery('#you-element');
var distanceFromBottom = documentHeight - (element.position().top + element.outerHeight(true));
alert(distanceFromBottom)
});
Open Turn On/Off Windows Features.
Make sure you have Active Directory Domain Services selected. If not, install it.
Representation is the same, the meaning is different. e.g, 0xFF, it both represented as "FF". When it is treated as "char", it is negative number -1; but it is 255 as unsigned. When it comes to bit shifting, it is a big difference since the sign bit is not shifted. e.g, if you shift 255 right 1 bit, it will get 127; shifting "-1" right will be no effect.
Other answers posted here for this question did not work for me using the latest Visual Studio 2017 Enterprise edition (as of 2018-09-18).
Instead, I used this method:
Once installed, close and restart Visual Studio. Go to File->New Project and search for the word Installer. You'll know you have the correct templates installed if you see a list that looks something like this:
ls -i file #output is for me 68551981
debugfs -R 'stat <68551981>' /dev/sda3 # /dev/sda3 is the disk on which the file exists
#results - crtime value
[root@loft9156 ~]# debugfs -R 'stat <68551981>' /dev/sda3
debugfs 1.41.12 (17-May-2010)
Inode: 68551981 Type: regular Mode: 0644 Flags: 0x80000
Generation: 769802755 Version: 0x00000000:00000001
User: 0 Group: 0 Size: 38973440
File ACL: 0 Directory ACL: 0
Links: 1 Blockcount: 76128
Fragment: Address: 0 Number: 0 Size: 0
ctime: 0x526931d7:1697cce0 -- Thu Oct 24 16:42:31 2013
atime: 0x52691f4d:7694eda4 -- Thu Oct 24 15:23:25 2013
mtime: 0x526931d7:1697cce0 -- Thu Oct 24 16:42:31 2013
**crtime: 0x52691f4d:7694eda4 -- Thu Oct 24 15:23:25 2013**
Size of extra inode fields: 28
EXTENTS:
(0-511): 352633728-352634239, (512-1023): 352634368-352634879, (1024-2047): 288392192-288393215, (2048-4095): 355803136-355805183, (4096-6143): 357941248-357943295, (6144
-9514): 357961728-357965098
I followed the answers here but when I tried to connect with my new user, I got an error message stating "The server principal 'newuser' is not able to access the database 'master' under the current security context"
.
I had to also create a new user in the master table to successfully log in with SSMS.
USE [master]
GO
CREATE LOGIN [newuser] WITH PASSWORD=N'blahpw'
GO
CREATE USER [newuser] FOR LOGIN [newuser] WITH DEFAULT_SCHEMA=[dbo]
GO
USE [MyDatabase]
CREATE USER newuser FOR LOGIN newuser WITH DEFAULT_SCHEMA = dbo
GO
EXEC sp_addrolemember N'db_owner', N'newuser'
GO
Note that the reason topicId was "not defined" per the error message is that it existed as a local variable when the setTimeout was executed, but not when the delayed call to postinsql happened. Variable lifetime is especially important to pay attention to, especially when trying something like passing "this" as an object reference.
I heard that you can pass topicId as a third parameter to the setTimeout function. Not much detail is given but I got enough information to get it to work, and it's successful in Safari. I don't know what they mean about the "millisecond error" though. Check it out here:
Ok. Thats my $0.02
I edited the most voted one a little cuz it didn't count blanks columns or rows well not totally, so here is my code i tested it and now can get any cell in any part of an excel file. also now u can have blanks columns between filled column and it will read them
try {
POIFSFileSystem fs = new POIFSFileSystem(new FileInputStream(Dir));
HSSFWorkbook wb = new HSSFWorkbook(fs);
HSSFSheet sheet = wb.getSheetAt(0);
HSSFRow row;
HSSFCell cell;
int rows; // No of rows
rows = sheet.getPhysicalNumberOfRows();
int cols = 0; // No of columns
int tmp = 0;
int cblacks=0;
// This trick ensures that we get the data properly even if it doesn't start from first few rows
for(int i = 0; i <= 10 || i <= rows; i++) {
row = sheet.getRow(i);
if(row != null) {
tmp = sheet.getRow(i).getPhysicalNumberOfCells();
if(tmp >= cols) cols = tmp;else{rows++;cblacks++;}
}
cols++;
}
cols=cols+cblacks;
for(int r = 0; r < rows; r++) {
row = sheet.getRow(r);
if(row != null) {
for(int c = 0; c < cols; c++) {
cell = row.getCell(c);
if(cell != null) {
System.out.print(cell+"\n");//Your Code here
}
}
}
}} catch(Exception ioe) {
ioe.printStackTrace();}
Just check first the session is not already created and if not create one. Here i am setting it for 1 minute only.
<?php
if(!isset($_SESSION["timeout"])){
$_SESSION['timeout'] = time();
};
$st = $_SESSION['timeout'] + 60; //session time is 1 minute
?>
<?php
if(time() < $st){
echo 'Session will last 1 minute';
}
?>
For anyone on Mac OS X, you can find netbeans.conf
here:
/Applications/NetBeans/NetBeans <version>.app/Contents/Resources/NetBeans/etc/netbeans.conf
In case anyone needs to know :)
|checked|unchecked|crossed|
|---|---|---|
|✓|_|✗|
Where
? via HTML Entity Code
? via HTML Entity Code
_ via underscore character
and table via markdown table syntax.
Just in case someone else needs an F# version of the above described hack.
open System
open System.IO
open System.Net
type WebClientEx() =
inherit WebClient ()
[<DefaultValue>] val mutable m_Resp : WebResponse
override x.GetWebResponse (req: WebRequest ) =
x.m_Resp <- base.GetWebResponse(req)
(req :?> HttpWebRequest).AllowAutoRedirect <- false;
x.m_Resp
override x.GetWebResponse (req: WebRequest , ar: IAsyncResult ) =
x.m_Resp <- base.GetWebResponse(req, ar)
(req :?> HttpWebRequest).AllowAutoRedirect <- false;
x.m_Resp
member x.StatusCode with get() : HttpStatusCode =
if not (obj.ReferenceEquals (x.m_Resp, null)) && x.m_Resp.GetType() = typeof<HttpWebResponse> then
(x.m_Resp :?> HttpWebResponse).StatusCode
else
HttpStatusCode.OK
let wc = new WebClientEx()
let st = wc.OpenRead("http://www.stackoverflow.com")
let sr = new StreamReader(st)
let res = sr.ReadToEnd()
wc.StatusCode
sr.Close()
st.Close()
In the idle IDE there is Shell/Restart Shell. Cntrl-F6 will do it.
input[required]{
background-image: radial-gradient(#F00 15%, transparent 16%), radial-gradient(#F00 15%, transparent 16%);
background-size: 1em 1em;
background-position: right top;
background-repeat: no-repeat;
}
I had a similar problem with crypto updates. A kludgy hack that gets around this is to include a '+ now() - now()' stunt at the end of the cell formula, with the setting as above to recalculate every minute. This worked for my price updates, but, definitely an ugly hack.
See this post it looks like you can use UIGetScreenImage(
) for now.
Use file_get_contents
in combination with json_decode
and echo
.
You need to convert those to actual dates instead of strings, try this:
SELECT *
FROM <TABLENAME>
WHERE start_date BETWEEN TO_DATE('2010-01-15','YYYY-MM-DD') AND TO_DATE('2010-01-17', 'YYYY-MM-DD');
Edited to deal with format as specified:
SELECT *
FROM <TABLENAME>
WHERE start_date BETWEEN TO_DATE('15-JAN-10','DD-MON-YY') AND TO_DATE('17-JAN-10','DD-MON-YY');
1: Add the following line into the AssemblyInfo class
[assembly: log4net.Config.XmlConfigurator(Watch = true)]
2: Make sure you don't use .Net Framework 4 Client Profile
as Target Framework
(I think this is OK on your side because otherwise it even wouldn't compile)
3: Make sure you log very early in your program. Otherwise, in some scenarios, it will not be initialized properly (read more on log4net FAQ).
So log something during application startup in the Global.asax
public class Global : System.Web.HttpApplication
{
private static readonly log4net.ILog Log = log4net.LogManager.GetLogger(typeof(Global));
protected void Application_Start(object sender, EventArgs e)
{
Log.Info("Startup application.");
}
}
4: Make sure you have permission to create files and folders on the given path (if the folder itself also doesn't exist)
5: The rest of your given information looks ok
java.sql.Timestamp
is a subclass of java.util.Date
. So, just upcast it.
Date dtStart = resultSet.getTimestamp("dtStart");
Date dtEnd = resultSet.getTimestamp("dtEnd");
Using SimpleDateFormat
and creating Joda DateTime
should be straightforward from this point on.
A good choice is to use 'sed as grep' (as explained in this classical sed tutorial).
sed -n 's/pattern/&/p' file
Examples (works in bash, sh, ksh, csh,..):
[~]$ cat testfile
12 3
1 4 abc
xa c
a c\2
1 23
[~]$ sed -n 's/\t/&/p' testfile
xa c
a c\2
[~]$ sed -n 's/\ta\t/&/p' testfile
a c\2
I used the following online tool: https://www.get-metadata.com It allows to upload a file and analyze it and then shows all its metadata.
The attr()
function is also a setter function. You can just pass it an empty string.
$('body').attr('data-body','');
An empty string will simply create the attribute with no value.
<body data-body>
Reference - http://api.jquery.com/attr/#attr-attributeName-value
attr( attributeName , value )
I am using this Typescript snippet:
function UInt8ArrayToString(uInt8Array: Uint8Array): string
{
var s: string = "[";
for(var i: number = 0; i < uInt8Array.byteLength; i++)
{
if( i > 0 )
s += ", ";
s += uInt8Array[i];
}
s += "]";
return s;
}
Remove the type annotations if you need the JavaScript version. Hope this helps!
This code works for me: I set values whit an INSERT and get the LAST_INSERT_ID() of this value whit a SELECT; I use java NetBeans 8.1, MySql and java.JDBC.driver
try {
String Query = "INSERT INTO `stock`(`stock`, `min_stock`,
`id_stock`) VALUES ("
+ "\"" + p.get_Stock().getStock() + "\", "
+ "\"" + p.get_Stock().getStockMinimo() + "\","
+ "" + "null" + ")";
Statement st = miConexion.createStatement();
st.executeUpdate(Query);
java.sql.ResultSet rs;
rs = st.executeQuery("Select LAST_INSERT_ID() from stock limit 1");
rs.next(); //para posicionar el puntero en la primer fila
ultimo_id = rs.getInt("LAST_INSERT_ID()");
} catch (SqlException ex) { ex.printTrace;}
Answering specific question of reversing with IntStream, below worked for me:
IntStream.range(0, 10)
.map(x -> x * -1)
.sorted()
.map(Math::abs)
.forEach(System.out::println);
Yesterday Date can be calculated as:-
let now = new Date();
var defaultDate = now - 1000 * 60 * 60 * 24 * 1;
defaultDate = new Date(defaultDate);
if it is not necessary to modify the variable than a general workaround for this kind of problem would be to extract the part of code which use lambda and use final keyword on method-parameter.
If the data is on multiple lines then you may have to use the following,
/My cow ([\s\S]*)milk/gm
My cow always gives
milk
Basically shared folders are renamed to synced folder from v1 to v2 (docs), under the bonnet it is still using vboxsf
between host and guest (there is known performance issues if there are large numbers of files/directories).
/vagrant
in guestVagrant is mounting the current working directory (where Vagrantfile
resides) as /vagrant
in the guest, this is the default behaviour.
See docs
NOTE: By default, Vagrant will share your project directory (the directory with the Vagrantfile) to /vagrant.
You can disable this behaviour by adding cfg.vm.synced_folder ".", "/vagrant", disabled: true
in your Vagrantfile
.
Based on the output /tmp
on host was NOT mounted during up time.
Use VAGRANT_INFO=debug vagrant up
or VAGRANT_INFO=debug vagrant reload
to start the VM for more output regarding why the synced folder is not mounted. Could be a permission issue (mode bits of /tmp
on host should be drwxrwxrwt
).
I did a test quick test using the following and it worked (I used opscode bento raring vagrant base box)
config.vm.synced_folder "/tmp", "/tmp/src"
output
$ vagrant reload
[default] Attempting graceful shutdown of VM...
[default] Setting the name of the VM...
[default] Clearing any previously set forwarded ports...
[default] Creating shared folders metadata...
[default] Clearing any previously set network interfaces...
[default] Available bridged network interfaces:
1) eth0
2) vmnet8
3) lxcbr0
4) vmnet1
What interface should the network bridge to? 1
[default] Preparing network interfaces based on configuration...
[default] Forwarding ports...
[default] -- 22 => 2222 (adapter 1)
[default] Running 'pre-boot' VM customizations...
[default] Booting VM...
[default] Waiting for VM to boot. This can take a few minutes.
[default] VM booted and ready for use!
[default] Configuring and enabling network interfaces...
[default] Mounting shared folders...
[default] -- /vagrant
[default] -- /tmp/src
Within the VM, you can see the mount info /tmp/src on /tmp/src type vboxsf (uid=900,gid=900,rw)
.
If you want install python libs and their dependencies offline, finish following these steps on a machine with the same os, network connected, and python installed:
1) Create a requirements.txt
file with similar content (Note - these are the libraries you wish to download):
Flask==0.12
requests>=2.7.0
scikit-learn==0.19.1
numpy==1.14.3
pandas==0.22.0
One option for creating the requirements file is to use pip freeze > requirements.txt
. This will list all libraries in your environment. Then you can go in to requirements.txt
and remove un-needed ones.
2) Execute command mkdir wheelhouse && pip download -r requirements.txt -d wheelhouse
to download libs and their dependencies to directory wheelhouse
3) Copy requirements.txt into wheelhouse
directory
4) Archive wheelhouse into wheelhouse.tar.gz
with tar -zcf wheelhouse.tar.gz wheelhouse
Then upload wheelhouse.tar.gz
to your target machine:
1) Execute tar -zxf wheelhouse.tar.gz
to extract the files
2) Execute pip install -r wheelhouse/requirements.txt --no-index --find-links wheelhouse
to install the libs and their dependencies
That's called SQL INJECTION. The '
tries to open/close a string in your mysql query. You should always escape any string that gets into your queries.
for example,
instead of this:
"VALUES ('$sender_id') "
do this:
"VALUES ('". mysql_real_escape_string($sender_id) ."') "
(or equivalent, of course)
However, it's better to automate this, using PDO, named parameters, prepared statements or many other ways. Research about this and SQL Injection (here you have some techniques).
Hope it helps. Cheers
Some minimal c# code to embed an image, can be:
MailMessage mailWithImg = GetMailWithImg();
MySMTPClient.Send(mailWithImg); //* Set up your SMTPClient before!
private MailMessage GetMailWithImg() {
MailMessage mail = new MailMessage();
mail.IsBodyHtml = true;
mail.AlternateViews.Add(GetEmbeddedImage("c:/image.png"));
mail.From = new MailAddress("yourAddress@yourDomain");
mail.To.Add("recipient@hisDomain");
mail.Subject = "yourSubject";
return mail;
}
private AlternateView GetEmbeddedImage(String filePath) {
LinkedResource res = new LinkedResource(filePath);
res.ContentId = Guid.NewGuid().ToString();
string htmlBody = @"<img src='cid:" + res.ContentId + @"'/>";
AlternateView alternateView = AlternateView.CreateAlternateViewFromString(htmlBody, null, MediaTypeNames.Text.Html);
alternateView.LinkedResources.Add(res);
return alternateView;
}
This is because a DATE
column in Oracle also contains a time part. The result of the to_date()
function is a date with the time set to 00:00:00
and thus it probably doesn't match any rows in the table.
You should use:
SELECT EMP_NAME, DEPT
FROM EMPLOYEE
WHERE trunc(TIME_CREATED) = TO_DATE('26/JAN/2011','dd/mon/yyyy')
From command line:
mysqlcheck -o <db_name> -u<username> -p
then type password
If you want to test explicitly for valid JSON (as opposed to the absence of the returned value false
), then you can use a parsing approach as described here.
You can also use Array.from
.
var m = "Hello world!";
console.log(Array.from(m))
_x000D_
This method has been introduced in ES6.
The suggestion to use listdir
is a good one. The direct answer to your question in Python 2 is root, dirs, files = os.walk(dir_name).next()
.
The equivalent Python 3 syntax is root, dirs, files = next(os.walk(dir_name))
I just give it a shot:
In [9]: s = Series([True, True, True, False])
In [10]: s
Out[10]:
0 True
1 True
2 True
3 False
In [11]: -s
Out[11]:
0 False
1 False
2 False
3 True
What you do is correct, but the correct syntax for 'auto increment' should be without space:
CREATE TABLE people (id integer primary key autoincrement, first_name string, last_name string);
(Please also note that I changed your varchars to strings. That's because SQLite internally transforms a varchar into a string, so why bother?)
then your insert should be, in SQL language as standard as possible:
INSERT INTO people(id, first_name, last_name) VALUES (null, 'john', 'doe');
while it is true that if you omit id it will automatically incremented and assigned, I personally prefer not to rely on automatic mechanisms which could change in the future.
A note on autoincrement: although, as many pointed out, it is not recommended by SQLite people, I do not like the automatic reuse of ids of deleted records if autoincrement is not used. In other words, I like that the id of a deleted record will never, ever appear again.
HTH
You want DateTime.Today.AddDays(1)
.
Under Windows 10 OS environment, the following method works for me:
https://github.com/tesseract-ocr/tesseract/wiki Download tesseract and install it. Windows version is available here: https://github.com/UB-Mannheim/tesseract/wiki
Find script file pytesseract.py from C:\Users\User\Anaconda3\Lib\site-packages\pytesseract and open it.
Change the following code from tesseract_cmd = 'tesseract'
to: tesseract_cmd = 'D:/Program Files (x86)/Tesseract-OCR/tesseract.exe'
You may also need add environment variable D:/Program Files (x86)/Tesseract-OCR/
Hope it works for you!
This:
doc.LoadXml(HttpContext.Current.Server.MapPath("officeList.xml"));
should be:
doc.Load(HttpContext.Current.Server.MapPath("officeList.xml"));
LoadXml()
is for loading an XML string, not a file name.
If you want to just remove one dir (or file) you can use Groovy and Manage Jenkins ? Scripts Console run a script which removes it.
For example, you can look at the files with:
dh = new File('./bitnami/jenkins/jenkins_home/workspace/jobname/folder')
dh.eachFile {
println(it)
}
And then, when you have the folder you want to delete in dh
, you could simply append the next code:
dh.deleteDir()
And it will be deleted.
Note: The path shown in the example is for a Bitnami Jenkins installation, yours could be different.
To accomplish this in all browsers you need to use a combination of @energee, @Richard and @Feuermurmel methods.
<a href="" style="display: block; z-index: 1;">
<object data="" style="z-index: -1; pointer-events: none;" />
</a>
Adding:
pointer-events: none;
makes it work in Firefox.display: block;
gets it working in Chrome, and Safari.z-index: 1; z-index: -1;
makes it work in IE as well.protected
can be used by any subclasses from any assembly.
protected internal
is everything that protected
is, plus also anything in the same assembly can access it.
Importantly, it doesn't mean "subclasses in the same assembly" - it is the union of the two, not the intersection.
That response is a string too, if you want to send the response prettified, for some awkward reason, you could use something like JSON.stringify(anObject, null, 3)
It's important that you set the Content-Type
header to application/json
, too.
var http = require('http');
var app = http.createServer(function(req,res){
res.setHeader('Content-Type', 'application/json');
res.end(JSON.stringify({ a: 1 }));
});
app.listen(3000);
// > {"a":1}
Prettified:
var http = require('http');
var app = http.createServer(function(req,res){
res.setHeader('Content-Type', 'application/json');
res.end(JSON.stringify({ a: 1 }, null, 3));
});
app.listen(3000);
// > {
// > "a": 1
// > }
I'm not exactly sure why you want to terminate it with a newline, but you could just do JSON.stringify(...) + '\n'
to achieve that.
In express you can do this by changing the options instead.
'json replacer'
JSON replacer callback, null by default
'json spaces'
JSON response spaces for formatting, defaults to 2 in development, 0 in production
Not actually recommended to set to 40
app.set('json spaces', 40);
Then you could just respond with some json.
res.json({ a: 1 });
It'll use the 'json spaces
' configuration to prettify it.
select t1.user_id,t2.user_id
from t1 left join t2 ON t1.user_id = t2.user_id
and t1.username=t2.username
and t1.first_name=t2.first_name
and t1.last_name=t2.last_name
try this. This will compare your table and find all matching pairs, if any mismatch return NULL on left.
As I understand it, you want the server be able to send messages through from client 1 to client 2. You cannot directly connect two clients because one of the two ends of a WebSocket connection needs to be a server.
This is some pseudocodish JavaScript:
Client:
var websocket = new WebSocket("server address");
websocket.onmessage = function(str) {
console.log("Someone sent: ", str);
};
// Tell the server this is client 1 (swap for client 2 of course)
websocket.send(JSON.stringify({
id: "client1"
}));
// Tell the server we want to send something to the other client
websocket.send(JSON.stringify({
to: "client2",
data: "foo"
}));
Server:
var clients = {};
server.on("data", function(client, str) {
var obj = JSON.parse(str);
if("id" in obj) {
// New client, add it to the id/client object
clients[obj.id] = client;
} else {
// Send data to the client requested
clients[obj.to].send(obj.data);
}
});
Here's what I found.
stop:
schtasks /end /s <machine name> /tn <task name>
start:
schtasks /run /s <machine name> /tn <task name>
C:\>schtasks /?
SCHTASKS /parameter [arguments]
Description:
Enables an administrator to create, delete, query, change, run and
end scheduled tasks on a local or remote system. Replaces AT.exe.
Parameter List:
/Create Creates a new scheduled task.
/Delete Deletes the scheduled task(s).
/Query Displays all scheduled tasks.
/Change Changes the properties of scheduled task.
/Run Runs the scheduled task immediately.
/End Stops the currently running scheduled task.
/? Displays this help message.
Examples:
SCHTASKS
SCHTASKS /?
SCHTASKS /Run /?
SCHTASKS /End /?
SCHTASKS /Create /?
SCHTASKS /Delete /?
SCHTASKS /Query /?
SCHTASKS /Change /?
You need to do two things. First add the changes with
git add .
git stash
git checkout <some branch>
It should solve your issue as it solved to me.
Purpose: Android library at single place - Share across multiple projects http://raevilman.blogspot.com/2016/02/android-library-project-using-android.html
You can try to use this attribute(ConstraintLayout):layout_constraintBaseline_toBaselineOf
Like this:
app:layout_constraintBaseline_toBaselineOf="@+id/textView"
There's actually no need for visibility
or opacity
- you can simply use color
, which has the upside of keeping any "blinking" to the text only:
blink {_x000D_
display: inline;_x000D_
color: inherit;_x000D_
animation: blink 1s steps(1) infinite;_x000D_
-webkit-animation: blink 1s steps(1) infinite;_x000D_
}_x000D_
@keyframes blink { 50% { color: transparent; } }_x000D_
@-webkit-keyframes blink { 50% { color: transparent; } }
_x000D_
Here is some text, <blink>this text will blink</blink>, this will not.
_x000D_
Fiddle: http://jsfiddle.net/2r8JL/
You can reference Microsoft.VisualBasic.dll
.
Then using the code below.
Microsoft.VisualBasic.Interaction.InputBox("Question?","Title","Default Text");
Alternatively, by adding a using
directive allowing for a shorter syntax in your code (which I'd personally prefer).
using Microsoft.VisualBasic;
...
Interaction.InputBox("Question?","Title","Default Text");
Or you can do what Pranay Rana suggests, that's what I would've done too...
Yes! Use Powershell:
powershell -Command "Remove-Item 'c:\destination\*' -Recurse -Force"
Pelo Hyper-V:
private PerformanceCounter theMemCounter = new PerformanceCounter(
"Hyper-v Dynamic Memory VM",
"Physical Memory",
Process.GetCurrentProcess().ProcessName);
This code might work for non-.NET Core MVC controllers:
this.HttpContext.Response.StatusCode = 418; // I'm a teapot
return Json(new { status = "mer" }, JsonRequestBehavior.AllowGet);
I've had the same issue too, I didn't remember to start my WAMPSERVER, and so the connection couldn't be made... All you need to do is to start or restart your WAMPSERVER or your XAMMP again and it will work....
I used this code,
<div style="visibility:hidden">
<audio autoplay loop>
<source src="Aakaasam-Yemaaya Chesave.mp3">
</audio>
</div>
It is working well but i want stop and pause button. So, we can stop if we don't want to listen.
You had several issues with your code.
1) Missing a closing brace, }
, within your rules
.
2) In this case, there is no reason to use a function for the required
rule. By default, the plugin can handle checkbox
and radio
inputs just fine, so using true
is enough. However, this will simply do the same logic as in your original function and verify that at least one is checked.
3) If you also want only a maximum of two to be checked, then you'll need to apply the maxlength
rule.
4) The messages
option was missing the rule specification. It will work, but the one custom message would apply to all rules on the same field.
5) If a name
attribute contains brackets, you must enclose it within quotes.
DEMO: http://jsfiddle.net/K6Wvk/
$(document).ready(function () {
$('#formid').validate({ // initialize the plugin
rules: {
'test[]': {
required: true,
maxlength: 2
}
},
messages: {
'test[]': {
required: "You must check at least 1 box",
maxlength: "Check no more than {0} boxes"
}
}
});
});
I like the solution by JoshAdel.
But there is just one catch.
The np.bincount()
solution only works on numbers.
If you have strings, collections.Counter
solution will work for you.
All $_GET
parameters have a string datatype, therefore, is_int
will always return false.
You can see this by calling var_dump
:
var_dump($_GET['p']); // string(2) "54"
Using is_numeric
will provide the desired result (mind you, that allows values such as: 0x24
).
$(document).ready(
function()
{
$("input:checkbox").change(
function()
{
if( $(this).is(":checked") )
{
$("#formName").submit();
}
}
)
}
);
Though it would probably be better to add classes to each of the checkboxes and do
$(".checkbox_class").change();
so that you can choose which checkboxes submit the form instead of all of them doing it.
To keep the color and prevent an underline on the link:
legend.green-color a{
color:green;
text-decoration: none;
}
import argparse
parser = argparse.ArgumentParser()
parser.add_argument('--example', nargs='?', const=1, type=int)
args = parser.parse_args()
print(args)
% test.py
Namespace(example=None)
% test.py --example
Namespace(example=1)
% test.py --example 2
Namespace(example=2)
nargs='?'
means 0-or-1 argumentsconst=1
sets the default when there are 0 argumentstype=int
converts the argument to intIf you want test.py
to set example
to 1 even if no --example
is specified, then include default=1
. That is, with
parser.add_argument('--example', nargs='?', const=1, type=int, default=1)
then
% test.py
Namespace(example=1)
Let's assume you have successfully followed Spring Boot's guide on setting up your Spring Boot application as a service.
Your application artifact resides in /srv/my-app/my-app.war
, accompanied by a configuration file /srv/my-app/my-app.conf
:
# This is file my-app.conf
# What can you do in this .conf file? The my-app.war is prepended with a SysV init.d script
# (yes, take a look into the war file with a text editor). As my-app.war is symlinked in the init.d directory, that init.d script
# gets executed. One of its step is actually `source`ing this .conf file. Therefore we can do anything in this .conf file that
# we can also do in a regular shell script.
JAVA_OPTS="-agentlib:jdwp=transport=dt_socket,address=localhost:8002,server=y,suspend=n"
export SPRING_PROFILES_ACTIVE=staging
When you restart your Spring Boot application with sudo service my-app restart
, then in its log file located at /var/log/my-app.log
should be a line saying Listening for transport dt_socket at address: 8002
.
Open an SSH port-forwarding tunnel to the server: ssh -L 8002:localhost:8002 [email protected]
. Keep this SSH session running.
In Eclipse, from the toolbar, select Run -> Debug Configurations -> select Remote Java Application -> click the New button -> select as Connection Type Standard (Socket Attach), as Host localhost, and as Port 8002 (or whatever you have configured in the steps before). Click Apply and then Debug.
The Eclipse debugger should now connect to the remote server. Switching to the Debug perspective should show the connected JVM and its threads. Breakpoints should fire as soon as they are remotely triggered.
Use a for
loop instead of .forEach()
var myObj = [{"a": "1","b": null},{"a": "2","b": 5}]
var result = false
for(var call of myObj) {
console.log(call)
var a = call['a'], b = call['b']
if(a == null || b == null) {
result = false
break
}
}
No. Regular expressions in Python are handled by the re
module.
article = re.sub(r'(?is)</html>.+', '</html>', article)
In general:
text_after = re.sub(regex_search_term, regex_replacement, text_before)
There are a few things interacting here:
docker run your_image arg1 arg2
will replace the value of CMD
with arg1 arg2
. That's a full replacement of the CMD, not appending more values to it. This is why you often see docker run some_image /bin/bash
to run a bash shell in the container.
When you have both an ENTRYPOINT and a CMD value defined, docker starts the container by concatenating the two and running that concatenated command. So if you define your entrypoint to be file.sh
, you can now run the container with additional args that will be passed as args to file.sh
.
Entrypoints and Commands in docker have two syntaxes, a string syntax that will launch a shell, and a json syntax that will perform an exec. The shell is useful to handle things like IO redirection, chaining multiple commands together (with things like &&
), variable substitution, etc. However, that shell gets in the way with signal handling (if you've ever seen a 10 second delay to stop a container, this is often the cause) and with concatenating an entrypoint and command together. If you define your entrypoint as a string, it would run /bin/sh -c "file.sh"
, which alone is fine. But if you have a command defined as a string too, you'll see something like /bin/sh -c "file.sh" /bin/sh -c "arg1 arg2"
as the command being launched inside your container, not so good. See the table here for more on how these two options interact
The shell -c
option only takes a single argument. Everything after that would get passed as $1
, $2
, etc, to that single argument, but not into an embedded shell script unless you explicitly passed the args. I.e. /bin/sh -c "file.sh $1 $2" "arg1" "arg2"
would work, but /bin/sh -c "file.sh" "arg1" "arg2"
would not since file.sh
would be called with no args.
Putting that all together, the common design is:
FROM ubuntu:14.04
COPY ./file.sh /
RUN chmod 755 /file.sh
# Note the json syntax on this next line is strict, double quotes, and any syntax
# error will result in a shell being used to run the line.
ENTRYPOINT ["file.sh"]
And you then run that with:
docker run your_image arg1 arg2
There's a fair bit more detail on this at:
I know this is an older question but I'm still using Python 2.4.3 and I needed to find a better way of converting the string of data to a datetime.
The solution if datetime doesn't support %f and without needing a try/except is:
(dt, mSecs) = row[5].strip().split(".")
dt = datetime.datetime(*time.strptime(dt, "%Y-%m-%d %H:%M:%S")[0:6])
mSeconds = datetime.timedelta(microseconds = int(mSecs))
fullDateTime = dt + mSeconds
This works for the input string "2010-10-06 09:42:52.266000"
I'm a big fan of Supervisor for managing daemons. It's written in Python, so there are plenty of examples of how to interact with or extend it from Python. For your purposes the XML-RPC process control API should work nicely.