Starting
start-dfs.sh (starts the namenode and the datanode)
start-mapred.sh (starts the jobtracker and the tasktracker)
Stopping
stop-dfs.sh
stop-mapred.sh
You could use a closure. Just modify your code like this:
google.maps.event.addListener(marker,'click', (function(marker,content,infowindow){
return function() {
infowindow.setContent(content);
infowindow.open(map,marker);
};
})(marker,content,infowindow));
Here is the DEMO
Solution(s) for this, found in the official wampserver.com forums:
This problem is caused by Windows (7) in combination with any software that also uses port 80 (like Skype or IIS (which is installed on most developer machines)). A video solution can be found here (34.500+ views, damn, this seems to be a big thing ! EDIT: The video now has ~60.000 views ;) )
To make it short: open command line tool, type "netstat -aon" and look for any lines that end of ":80"
. Note thatPID
on the right side. This is the process id of the software which currently usesport 80
. Press AltGr + Ctrl + Del to get into the Taskmanager. Switch to the tab where you can see all services currently running, ordered by PID. Search for that PID
you just notices and stop that thing (right click). To prevent this in future, you should config the software's port settings (skype can do that).
left click the wamp icon in the taskbar, go to apache > httpd.conf and edit this file: change "listen to port .... 80"
to 8080
. Restart. Done !
Port 80 blocked by "Microsoft Web Deployment Service", simply deinstall this, more info here
By the way, it's not Microsoft's fault, it's a stupid usage of ports by most WAMP stacks.
IMPORTANT: you have to use localhost
or 127.0.0.1
now with port 8080
, this means 127.0.0.1:8080
or localhost:8080
.
In any realistic system, no, creating a stack frame will always be more expensive than an INC and a JMP. That's why really good compilers automatically transform tail recursion into a call to the same frame, i.e. without the overhead, so you get the more readable source version and the more efficient compiled version. A really, really good compiler should even be able to transform normal recursion into tail recursion where that is possible.
Tell it where to look for you class: it's in ".", which is the current directory:
java -classpath . HelloWorld
No need to set JAVA_HOME
or CLASSPATH
in this case
Did you try using double-quotes? Regardless, no one in 2011 should be limited by the native VB6 shell command. Here's a function that uses ShellExecuteEx, much more versatile.
Option Explicit
Private Const SEE_MASK_DEFAULT = &H0
Public Enum EShellShowConstants
essSW_HIDE = 0
essSW_SHOWNORMAL = 1
essSW_SHOWMINIMIZED = 2
essSW_MAXIMIZE = 3
essSW_SHOWMAXIMIZED = 3
essSW_SHOWNOACTIVATE = 4
essSW_SHOW = 5
essSW_MINIMIZE = 6
essSW_SHOWMINNOACTIVE = 7
essSW_SHOWNA = 8
essSW_RESTORE = 9
essSW_SHOWDEFAULT = 10
End Enum
Private Type SHELLEXECUTEINFO
cbSize As Long
fMask As Long
hwnd As Long
lpVerb As String
lpFile As String
lpParameters As String
lpDirectory As String
nShow As Long
hInstApp As Long
lpIDList As Long 'Optional
lpClass As String 'Optional
hkeyClass As Long 'Optional
dwHotKey As Long 'Optional
hIcon As Long 'Optional
hProcess As Long 'Optional
End Type
Private Declare Function ShellExecuteEx Lib "shell32.dll" Alias "ShellExecuteExA" (lpSEI As SHELLEXECUTEINFO) As Long
Public Function ExecuteProcess(ByVal FilePath As String, ByVal hWndOwner As Long, ShellShowType As EShellShowConstants, Optional EXEParameters As String = "", Optional LaunchElevated As Boolean = False) As Boolean
Dim SEI As SHELLEXECUTEINFO
On Error GoTo Err
'Fill the SEI structure
With SEI
.cbSize = Len(SEI) ' Bytes of the structure
.fMask = SEE_MASK_DEFAULT ' Check MSDN for more info on Mask
.lpFile = FilePath ' Program Path
.nShow = ShellShowType ' How the program will be displayed
.lpDirectory = PathGetFolder(FilePath)
.lpParameters = EXEParameters ' Each parameter must be separated by space. If the lpFile member specifies a document file, lpParameters should be NULL.
.hwnd = hWndOwner ' Owner window handle
' Determine launch type (would recommend checking for Vista or greater here also)
If LaunchElevated = True Then ' And m_OpSys.IsVistaOrGreater = True
.lpVerb = "runas"
Else
.lpVerb = "Open"
End If
End With
ExecuteProcess = ShellExecuteEx(SEI) ' Execute the program, return success or failure
Exit Function
Err:
' TODO: Log Error
ExecuteProcess = False
End Function
Private Function PathGetFolder(psPath As String) As String
On Error Resume Next
Dim lPos As Long
lPos = InStrRev(psPath, "\")
PathGetFolder = Left$(psPath, lPos - 1)
End Function
string target= "http://www.google.com";
try
{
System.Diagnostics.Process.Start(target);
}
catch (System.ComponentModel.Win32Exception noBrowser)
{
if (noBrowser.ErrorCode==-2147467259)
MessageBox.Show(noBrowser.Message);
}
catch (System.Exception other)
{
MessageBox.Show(other.Message);
}
list multiplication works.
>>> [0] * 10
[0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
On strings and memory allocation:
A string in C is just a sequence of char
s, so you can use char *
or a char
array wherever you want to use a string data type:
typedef struct {
int number;
char *name;
char *address;
char *birthdate;
char gender;
} patient;
Then you need to allocate memory for the structure itself, and for each of the strings:
patient *createPatient(int number, char *name,
char *addr, char *bd, char sex) {
// Allocate memory for the pointers themselves and other elements
// in the struct.
patient *p = malloc(sizeof(struct patient));
p->number = number; // Scalars (int, char, etc) can simply be copied
// Must allocate memory for contents of pointers. Here, strdup()
// creates a new copy of name. Another option:
// p->name = malloc(strlen(name)+1);
// strcpy(p->name, name);
p->name = strdup(name);
p->address = strdup(addr);
p->birthdate = strdup(bd);
p->gender = sex;
return p;
}
If you'll only need a few patient
s, you can avoid the memory management at the expense of allocating more memory than you really need:
typedef struct {
int number;
char name[50]; // Declaring an array will allocate the specified
char address[200]; // amount of memory when the struct is created,
char birthdate[50]; // but pre-determines the max length and may
char gender; // allocate more than you need.
} patient;
On linked lists:
In general, the purpose of a linked list is to prove quick access to an ordered collection of elements. If your llist
contains an element called num
(which presumably contains the patient number), you need an additional data structure to hold the actual patient
s themselves, and you'll need to look up the patient number every time.
Instead, if you declare
typedef struct llist
{
patient *p;
struct llist *next;
} list;
then each element contains a direct pointer to a patient
structure, and you can access the data like this:
patient *getPatient(list *patients, int num) {
list *l = patients;
while (l != NULL) {
if (l->p->num == num) {
return l->p;
}
l = l->next;
}
return NULL;
}
Include the jQuery file first:
<script src="http://ajax.googleapis.com/ajax/libs/jquery/2.0.0/jquery.min.js"></script>
<script type="text/javascript" src="./javascript.js"></script>
<script
src="http://maps.googleapis.com/maps/api/js?key=AIzaSyCJnj2nWoM86eU8Bq2G4lSNz3udIkZT4YY&sensor=false">
</script>
As already stated above, the ISO-C11 preprocessor does not support string comparison. However, the problem of assigning a macro with the “opposite value” can be solved with “token pasting” and “table access”. Jesse’s simple concatenate/stringify macro-solution fails with gcc 5.4.0 because the stringization is done before the evaluation of the concatenation (conforming to ISO C11). However, it can be fixed:
#define P_(user) user ## _VS
#define VS(user) P_ (user)
#define S(U) S_(U)
#define S_(U) #U
#define jack_VS queen
#define queen_VS jack
S (VS (jack))
S (jack)
S (VS (queen))
S (queen)
#define USER jack // jack or queen, your choice
#define USER_VS USER##_VS // jack_VS or queen_VS
S (USER)
S (USER_VS)
The first line (macro P_()
) adds one indirection to let the next line (macro VS()
) finish the concatenation before the stringization (see Why do I need double layer of indirection for macros?). The stringization macros (S()
and S_()
) are from Jesse.
The table (macros jack_VS
and queen_VS
) which is much easier to maintain than the if-then-else construction of the OP is from Jesse.
Finally, the next four-line block invokes the function-style macros. The last four-line block is from Jesse’s answer.
Storing the code in foo.c
and invoking the preprocessor gcc -nostdinc -E foo.c
yields:
# 1 "foo.c"
# 1 "<built-in>"
# 1 "<command-line>"
# 1 "foo.c"
# 9 "foo.c"
"queen"
"jack"
"jack"
"queen"
"jack"
"USER_VS"
The output is as expected. The last line shows that the USER_VS
macro is not expanded before stringization.
According to the documentation
Once a virtual environment has been created, it can be “activated” using a script in the virtual environment’s binary directory. The invocation of the script is platform-specific ( must be replaced by the path of the directory containing the virtual environment).
As it is platform-specific, use env\Scripts\activate
for Windows and use env/Scripts/activate
for Linux.
To find a hostname in your local network by IP address you can use:
nmblookup -A <ip>
To find a hostname on the internet you could use the host
program:
host <ip>
Or you can install nbtscan
by running:
sudo apt-get install nbtscan
And use:
nbtscan <ip>
Update 2018-05-13
You can query a name server with nslookup
. It works both ways!
nslookup <IP>
nslookup <hostname>
I ran into this issue while I was trying to run unit-tests on a private pod.
I did everything everyone suggested. Nothing worked.
All I had to do was to run my unit-tests on a different simulator.
I didn't try resetting the contents and settings of my simulator, maybe that would have worked as well ¯_(?)_/¯
Just as you said, I'd recommend weights. Percentages would be incredibly useful (don't know why they aren't supported), but one way you could do it is like so:
<LinearLayout
android:layout_height="fill_parent"
android:layout_width="fill_parent"
>
<LinearLayout
android:layout_height="0dp"
android:layout_width="fill_parent"
android:layout_weight="1"
>
</LinearLayout>
<View
android:layout_height="0dp"
android:layout_width="fill_parent"
android:layout_weight="1"
/>
</LinearLayout>
The takeaway being that you have an empty View that will take up the remaining space. Not ideal, but it does what you're looking for.
This also happens when the Response-Type is not public! I returned an internal class as I used Visual Studio to generate me the type.
internal class --> public class
Two's complement is one of the way of expressing a negative number and most of the controllers and processors store a negative number in 2's complement form
I think the following code will take care of only TextFields in the form:
var str = $('#formId').serialize();
To add other types of input type we can use:
$("input[type='checkbox'], input[type='radio']").on( "click", functionToSerialize );
$("select").on( "change", functionToSerialize );
I use launch4j
ANT Command:
<target name="jar" depends="compile, buildDLLs, copy">
<jar basedir="${java.bin.dir}" destfile="${build.dir}/Project.jar" manifest="META-INF/MANIFEST.MF" />
</target>
<target name="exe" depends="jar">
<exec executable="cmd" dir="${launch4j.home}">
<arg line="/c launch4jc.exe ${basedir}/${launch4j.dir}/L4J_ProjectConfig.xml" />
</exec>
</target>
calling a function is simple ..
myFunction();
so your code will be something like..
$(function(){
$('#elementID').click(function(){
myFuntion(); //this will call your function
});
});
$(function(){
$('#elementID').click( myFuntion );
});
or with some condition
if(something){
myFunction(); //this will call your function
}
s=scan.nextLine();
It returns input was skipped.
so you might use
s=scan.next();
You can create a Date
object, and call getTime
on it:
new Date(2010, 6, 26).getTime() / 1000
There is an operator missing, likely a *
:
-3.7 need_something_here (prof[x])
The "is not callable" occurs because the parenthesis -- and lack of operator which would have switched the parenthesis into precedence operators -- make Python try to call the result of -3.7
(a float) as a function, which is not allowed.
The parenthesis are also not needed in this case, the following may be sufficient/correct:
-3.7 * prof[x]
As Legolas points out, there are other things which may need to be addressed:
2.25 * (1 - math.pow(math.e, (-3.7(prof[x])/2.25))) * (math.e, (0/2.25)))
^-- op missing
extra parenthesis --^
valid but questionable float*tuple --^
expression yields 0.0 always --^
Other ways if we are being exhaustive.
anewarray
, multianewarray
, newarray
or new
. These can be added using libraries such as ASM or BCEL. A version of bcel is shipped with Oracle's Java. Again this doesn't call a constructor, but you can call a constructor as a seperate call.In my case I had to combine the above in order to make it work
return Response(json.dumps({'Error': 'Error in payload'}),
status=422,
mimetype="application/json")
Simple way for newbie:
title.ToLower().Contains("string");//of course "string" is lowercase.
Simple Steps:
-Open Eclipse.
Why not use a library function to validate the ip address?
>>> ip="241.1.1.112343434"
>>> socket.inet_aton(ip)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
socket.error: illegal IP address string passed to inet_aton
This is probably system-dependent, but this is the simplest way I've found.
if [ -e /var/run/nginx.pid ]; then echo "nginx is running"; fi
That's the best solution for scripting.
The code says everything:
max@serv$ chmod 777 .
Okay, it doesn't say everything.
In UNIX and Linux, the ability to remove a file is not determined by the access bits of that file. It is determined by the access bits of the directory which contains the file.
Think of it this way -- deleting a file doesn't modify that file. You aren't writing to the file, so why should "w" on the file matter? Deleting a file requires editing the directory that points to the file, so you need "w" on the that directory.
To stop a running program, use Ctrl+C to terminate the process.
To handle it programmatically in python, import the sys
module and use sys.exit()
where you want to terminate the program.
import sys
sys.exit()
The first allocates an object with automatic storage duration, which means it will be destructed automatically upon exit from the scope in which it is defined.
The second allocated an object with dynamic storage duration, which means it will not be destructed until you explicitly use delete
to do so.
I know this is an old thread but I think the Blaze library is worth checking out. It's built for these types of situations.
From the docs:
Blaze extends the usability of NumPy and Pandas to distributed and out-of-core computing. Blaze provides an interface similar to that of the NumPy ND-Array or Pandas DataFrame but maps these familiar interfaces onto a variety of other computational engines like Postgres or Spark.
Edit: By the way, it's supported by ContinuumIO and Travis Oliphant, author of NumPy.
The .sort() function stores the value of new list directly in the list variable; so answer for your third question would be NO. Also if you do this using sorted(list), then you can get it use because it is not stored in the list variable. Also sometimes .sort() method acts as function, or say that it takes arguments in it.
You have to store the value of sorted(list) in a variable explicitly.
Also for short data processing the speed will have no difference; but for long lists; you should directly use .sort() method for fast work; but again you will face irreversible actions.
That is an very old post but I faced to a similar problem and I would like to share my experience with you guys.
I am building microservice architecture with rest APIs. I have some rest GET services, they collect data from back-end system based on the request parameters.
I followed the rest API design documents and I sent back HTTP 404 with a perfect JSON error message to client when there was no data which align to the query conditions (for example zero record was selected).
When there was no data to sent back to the client I prepared an perfect JSON message with internal error code, etc. to inform the client about the reason of the "Not Found" and it was sent back to the client with HTTP 404. That works fine.
Later I have created a rest API client class which is an easy helper to hide the HTTP communication related code and I used this helper all the time when I called my rest APIs from my code.
BUT I needed to write confusing extra code just because HTTP 404 had two different functions:
Important: My rest API error handler catches all the exceptions appears in the back-end service which means in case of any error my rest API always returns with a perfect JSON message with the message details.
This is the 1st version of my client helper method which handles the two different HTTP 404 response:
public static String getSomething(final String uuid) {
String serviceUrl = getServiceUrl();
String path = "user/" + , uuid);
String requestUrl = serviceUrl + path;
String httpMethod = "GET";
Response response = client
.target(serviceUrl)
.path(path)
.request(ExtendedMediaType.APPLICATION_UTF8)
.get();
if (response.getStatus() == Response.Status.OK.getStatusCode()) {
// HTTP 200
return response.readEntity(String.class);
} else {
// confusing code comes here just because
// I need to decide the type of HTTP 404...
// trying to parse response body
try {
String responseBody = response.readEntity(String.class);
ObjectMapper mapper = new ObjectMapper();
ErrorInfo errorInfo = mapper.readValue(responseBody, ErrorInfo.class);
// re-throw the original exception
throw new MyException(errorInfo);
} catch (IOException e) {
// this is a real HTTP 404
throw new ServiceUnavailableError(response, requestUrl, httpMethod);
}
// this exception will never be thrown
throw new Exception("UNEXPECTED ERRORS, BETTER IF YOU DO NOT SEE IT IN THE LOG");
}
BUT, because my Java or JavaScript client can receive two kind of HTTP 404 somehow I need to check the body of the response in case of HTTP 404. If I can parse the response body then I am sure I got back a response where there was no data to send back to the client.
If I am not able to parse the response that means I got back a real HTTP 404 from the web server (not from the rest API application).
It is so confusing and the client application always needs to do extra parsing to check the real reason of HTTP 404.
Honestly I do not like this solution. It is confusing, needs to add extra bullshit code to clients all the time.
So instead of using HTTP 404 in this two different scenarios I decided that I will do the following:
In that case client code can be more elegant:
public static String getString(final String processId, final String key) {
String serviceUrl = getServiceUrl();
String path = String.format("key/%s", key);
String requestUrl = serviceUrl + path;
String httpMethod = "GET";
log(requestUrl);
Response response = client
.target(serviceUrl)
.path(path)
.request(ExtendedMediaType.APPLICATION_JSON_UTF8)
.header(CustomHttpHeader.PROCESS_ID, processId)
.get();
if (response.getStatus() == Response.Status.OK.getStatusCode()) {
return response.readEntity(String.class);
} else {
String body = response.readEntity(String.class);
ObjectMapper mapper = new ObjectMapper();
ErrorInfo errorInfo = mapper.readValue(body, ErrorInfo.class);
throw new MyException(errorInfo);
}
throw new AnyServerError(response, requestUrl, httpMethod);
}
I think this handles that issue better.
If you have any better solution please share it with us.
I'm using VS2010, NUnit 2.6.3 (although internally ReSharper says it's using 2.6.2?), ReSharper 7.7.1 & NCrunch 2.5.0.12 and was running into the same "...test is inconclusive..." thing with NUnit, but NCrunch said everything was fine. For most of today NUnit & NCrunch were in sync agreeing about which tests were happy and which needed refactoring, then something happened which I still don't understand, and for a while NCrunch said I had failing tests (but stepping through them showed them to pass), then decided they were all working, and NUnit started complaining about all my tests except one with the same message "..test is inconclusive..." which I was again able to single step through to a pass even though NUnit continued to show it as "inconclusive").
I tried several of the suggestions above to no avail, and finally just closed VS2010 & reopened the solution. Voila, now all my tests are happy again, and NCrunch & NUnit are reporting the same results again. Unfortunately I have no idea what changed to cause them to go out of sync, but closing & reopening VS2010 seems to have fixed it.
Maybe someone else will run into this and be able to use this simple (if ultimately unsatisfying since you don't know what the real fix is) solution.
this worked best for me:
Cells(partcount + 5, "N").Value = Date + Time
Cells(partcount + 5, "N").NumberFormat = "mm/dd/yy hh:mm:ss AM/PM"
You need to specify the minimum width of the field.
String.format("%" + numberOfSpaces + "s", "");
Why do you want to generate a String of spaces of a certain length.
If you want a column of this length with values then you can do:
String.format("%" + numberOfSpaces + "s", "Hello");
which gives you numberOfSpaces-5 spaces followed by Hello. If you want Hello to appear on the left then add a minus sign in before numberOfSpaces.
$this->
is used to refer to a specific instance of a class's variables (member variables) or methods.
Example:
$derek = new Person();
$derek is now a specific instance of Person. Every Person has a first_name and a last_name, but $derek has a specific first_name and last_name (Derek Martin). Inside the $derek instance, we can refer to those as $this->first_name and $this->last_name
ClassName:: is used to refer to that type of class, and its static variables, static methods. If it helps, you can mentally replace the word "static" with "shared". Because they are shared, they cannot refer to $this, which refers to a specific instance (not shared). Static Variables (i.e. static $db_connection) can be shared among all instances of a type of object. For example, all database objects share a single connection (static $connection).
Static Variables Example: Pretend we have a database class with a single member variable: static $num_connections; Now, put this in the constructor:
function __construct()
{
if(!isset $num_connections || $num_connections==null)
{
$num_connections=0;
}
else
{
$num_connections++;
}
}
Just as objects have constructors, they also have destructors, which are executed when the object dies or is unset:
function __destruct()
{
$num_connections--;
}
Every time we create a new instance, it will increase our connection counter by one. Every time we destroy or stop using an instance, it will decrease the connection counter by one. In this way, we can monitor the number of instances of the database object we have in use with:
echo DB::num_connections;
Because $num_connections is static (shared), it will reflect the total number of active database objects. You may have seen this technique used to share database connections among all instances of a database class. This is done because creating the database connection takes a long time, so it's best to create just one, and share it (this is called a Singleton Pattern).
Static Methods (i.e. public static View::format_phone_number($digits)) can be used WITHOUT first instantiating one of those objects (i.e. They do not internally refer to $this).
Static Method Example:
public static function prettyName($first_name, $last_name)
{
echo ucfirst($first_name).' '.ucfirst($last_name);
}
echo Person::prettyName($derek->first_name, $derek->last_name);
As you can see, public static function prettyName knows nothing about the object. It's just working with the parameters you pass in, like a normal function that's not part of an object. Why bother, then, if we could just have it not as part of the object?
SELF:: If you are coding outside the object that has the static method you want to refer to, you must call it using the object's name View::format_phone_number($phone_number); If you are coding inside the object that has the static method you want to refer to, you can either use the object's name View::format_phone_number($pn), OR you can use the self::format_phone_number($pn) shortcut
The same goes for static variables: Example: View::templates_path versus self::templates_path
Inside the DB class, if we were referring to a static method of some other object, we would use the object's name: Example: Session::getUsersOnline();
But if the DB class wanted to refer to its own static variable, it would just say self: Example: self::connection;
Hope that helps clear things up :)
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:
Thanks, Max S. conda-forge worked for me as well.
Upgrading my scikit-learn from 0.19.1 to 0.19.2 in anaconda installed on Ubuntu on Google VM instance:
First, check available the packages with versions
conda list
It will show packages and their installed versions in the output:
scikit-learn 0.19.1 py36hedc7406_0
Upgrade to 0.19.2 July 2018 release.
conda config --append channels conda-forge
conda install scikit-learn=0.19.2
Now check the version installed correctly or not?
conda list
Output is:
scikit-learn 0.19.2 py36_blas_openblasha84fab4_201 [blas_openblas] conda-forge
I tried following commands:
!conda update conda
!pip install -U scikit-learn
It will install the required packages also will show in the conda list
but when try to import that package it will not work.
On the website http://scikit-learn.org/stable/install.html it is mentioned as: Warning To upgrade or uninstall scikit-learn installed with Anaconda or conda you should not use the pip.
If anybody doesn't want to add a dependency to their project, these functions may be helpful.
We pass the 'path' part of our URL into here. You probably don't want to pass the full URL in as a parameter (query strings need different escapes, etc).
/**
* Percent-encodes a string so it's suitable for use in a URL Path (not a query string / form encode, which uses + for spaces, etc)
*/
public static String percentEncode(String encodeMe) {
if (encodeMe == null) {
return "";
}
String encoded = encodeMe.replace("%", "%25");
encoded = encoded.replace(" ", "%20");
encoded = encoded.replace("!", "%21");
encoded = encoded.replace("#", "%23");
encoded = encoded.replace("$", "%24");
encoded = encoded.replace("&", "%26");
encoded = encoded.replace("'", "%27");
encoded = encoded.replace("(", "%28");
encoded = encoded.replace(")", "%29");
encoded = encoded.replace("*", "%2A");
encoded = encoded.replace("+", "%2B");
encoded = encoded.replace(",", "%2C");
encoded = encoded.replace("/", "%2F");
encoded = encoded.replace(":", "%3A");
encoded = encoded.replace(";", "%3B");
encoded = encoded.replace("=", "%3D");
encoded = encoded.replace("?", "%3F");
encoded = encoded.replace("@", "%40");
encoded = encoded.replace("[", "%5B");
encoded = encoded.replace("]", "%5D");
return encoded;
}
/**
* Percent-decodes a string, such as used in a URL Path (not a query string / form encode, which uses + for spaces, etc)
*/
public static String percentDecode(String encodeMe) {
if (encodeMe == null) {
return "";
}
String decoded = encodeMe.replace("%21", "!");
decoded = decoded.replace("%20", " ");
decoded = decoded.replace("%23", "#");
decoded = decoded.replace("%24", "$");
decoded = decoded.replace("%26", "&");
decoded = decoded.replace("%27", "'");
decoded = decoded.replace("%28", "(");
decoded = decoded.replace("%29", ")");
decoded = decoded.replace("%2A", "*");
decoded = decoded.replace("%2B", "+");
decoded = decoded.replace("%2C", ",");
decoded = decoded.replace("%2F", "/");
decoded = decoded.replace("%3A", ":");
decoded = decoded.replace("%3B", ";");
decoded = decoded.replace("%3D", "=");
decoded = decoded.replace("%3F", "?");
decoded = decoded.replace("%40", "@");
decoded = decoded.replace("%5B", "[");
decoded = decoded.replace("%5D", "]");
decoded = decoded.replace("%25", "%");
return decoded;
}
And tests:
@Test
public void testPercentEncode_Decode() {
assertEquals("", percentDecode(percentEncode(null)));
assertEquals("", percentDecode(percentEncode("")));
assertEquals("!", percentDecode(percentEncode("!")));
assertEquals("#", percentDecode(percentEncode("#")));
assertEquals("$", percentDecode(percentEncode("$")));
assertEquals("@", percentDecode(percentEncode("@")));
assertEquals("&", percentDecode(percentEncode("&")));
assertEquals("'", percentDecode(percentEncode("'")));
assertEquals("(", percentDecode(percentEncode("(")));
assertEquals(")", percentDecode(percentEncode(")")));
assertEquals("*", percentDecode(percentEncode("*")));
assertEquals("+", percentDecode(percentEncode("+")));
assertEquals(",", percentDecode(percentEncode(",")));
assertEquals("/", percentDecode(percentEncode("/")));
assertEquals(":", percentDecode(percentEncode(":")));
assertEquals(";", percentDecode(percentEncode(";")));
assertEquals("=", percentDecode(percentEncode("=")));
assertEquals("?", percentDecode(percentEncode("?")));
assertEquals("@", percentDecode(percentEncode("@")));
assertEquals("[", percentDecode(percentEncode("[")));
assertEquals("]", percentDecode(percentEncode("]")));
assertEquals(" ", percentDecode(percentEncode(" ")));
// Get a little complex
assertEquals("[]]", percentDecode(percentEncode("[]]")));
assertEquals("a=d%*", percentDecode(percentEncode("a=d%*")));
assertEquals(") (", percentDecode(percentEncode(") (")));
assertEquals("%21%20%2A%20%27%20%28%20%25%20%29%20%3B%20%3A%20%40%20%26%20%3D%20%2B%20%24%20%2C%20%2F%20%3F%20%23%20%5B%20%5D%20%25",
percentEncode("! * ' ( % ) ; : @ & = + $ , / ? # [ ] %"));
assertEquals("! * ' ( % ) ; : @ & = + $ , / ? # [ ] %", percentDecode(
"%21%20%2A%20%27%20%28%20%25%20%29%20%3B%20%3A%20%40%20%26%20%3D%20%2B%20%24%20%2C%20%2F%20%3F%20%23%20%5B%20%5D%20%25"));
assertEquals("%23456", percentDecode(percentEncode("%23456")));
}
In my experience with regex you really need to focus on what EXACTLY you are trying to match, rather than what NOT to match.
for example
\d{2}
[1-9][0-9]
The first expression will match any 2 digits....and the second will match 1 digit from 1 to 9 and 1 digit - any digit. So if you type 07 the first expression will validate it, but the second one will not.
See this for advanced reference:
http://www.regular-expressions.info/refadv.html
EDITED:
^((?!my string).)*$
Is the regular expression for does not contain "my string".
ps -eaf | grep [j]ava
It's better since it will only show you the active processes not including this command that also got java string the []
does the trick
I was having this problem but i found out that it was a permissions problem I changed my permissions to 0744 and now it works. I don't know if this was your problem but it worked for me.
.class
targets the following element:
<div class="class"></div>
#class
targets the following element:
<div id="class"></div>
Note that the id MUST be unique throughout the document, whilst any number of elements may share a class.
var myContent = '<div id="test">Hello <span>world!</span></div>';
alert($(myContent).text());
That results in hello world. Does that answer your question?
http://jsfiddle.net/D2tEf/ for an example
You can do by the following ways
this.your_form.getRawValue()['formcontrolname]
this.your_form.value['formcontrolname]
That's because you missed ELSE.
"Returns the result for the first condition that is true. If there was no matching result value, the result after ELSE is returned, or NULL if there is no ELSE part." (http://dev.mysql.com/doc/refman/5.0/en/control-flow-functions.html#operator_case)
Installing Aptana Studio in passive mode bypasses the installation of Git for Windows and Node.js.
Aptana_Studio_3_Setup_3.6.1 /passive /norestart
(I am unsure whether Aptana Studio will work properly without those "prerequisites", but it appears to.)
If you want a global installation in a specific directory, the command line is
Aptana_Studio_3_Setup_3.6.1.exe /passive /norestart ALLUSERS=1 APPDIR=c:\apps\AptanaStudio
Select select = new Select(_element);
List<WebElement> selectedOptions = select.getAllSelectedOptions();
if(selectedOptions.size() > 0){
return true;
}else{
return false;
}
Because a string variable is a reference, not an instance.
Initializing it to Empty by default would have been possible but it would have introduced a lot of inconsistencies all over the board.
Try this
$date = Carbon::parse(date_format($youttimestring,'d/m/Y H:i:s'));
echo $date;
If you're using bash
version > 4.0, you can exploit shopt -s globstar
to make short work of this:
shopt -s globstar; tar -czvf deploy.tar.gz **/Alice*.yml **/Bob*.json
this will add all .yml files that starts with Alice from any sub-directory and add all .json files that starts with Bob from any sub-directory.
First you need to keep copy of following somewhere in your hard disk.
C:\xampp\mysql\backup
C:\xampp\mysql\data
After that
Copy every thing inside "C:\xampp\mysql\backup" and paste and replace it in
"C:\xampp\mysql\data"
Now your mysql will work in phpmyadmin but your tables will show "Table not found in engine"
For this you will have to go to the copy of "backup and data folders" which have created in your hard disk and there in the data folder copy "ibdata1" file and past and replace in the "C:\xampp\mysql\data".
Now your tables data will be available.
Let's not forget good old parameters. When starting your *.bat or *.cmd file you can add up to nine parameters after the command file name:
call myscript.bat \\path\to\my\file.ext type
call myscript.bat \\path\to\my\file.ext "Del /F"
The myscript.bat could be something like this:
@Echo Off
Echo The path of this scriptfile %~0
Echo The name of this scriptfile %~n0
Echo The extension of this scriptfile %~x0
Echo.
If "%~2"=="" (
Echo Parameter missing, quitting.
GoTo :EOF
)
If Not Exist "%~1" (
Echo File does not exist, quitting.
GoTo :EOF
)
Echo Going to %~2 this file: %~1
%~2 "%~1"
If %errorlevel% NEQ 0 (
Echo Failed to %~2 the %~1.
)
@Echo On
c:\>c:\bats\myscript.bat \\server\path\x.txt type
The path of this scriptfile c:\bats\myscript.bat
The name of this scriptfile myscript
The extension of this scriptfile .bat
Going to type this file: \\server\path\x.txt
This is the content of the file:
Some alphabets: ABCDEFG abcdefg
Some numbers: 1234567890
c:\>c:\bats\myscript.bat \\server\path\x.txt "del /f "
The path of this scriptfile c:\bats\myscript.bat
The name of this scriptfile myscript
The extension of this scriptfile .bat
Going to del /f this file: \\server\path\x.txt
c:\>
Already answered in much detail in above answers. max
is subtracted to avoid overflow. I am adding here one more implementation in python3.
import numpy as np
def softmax(x):
mx = np.amax(x,axis=1,keepdims = True)
x_exp = np.exp(x - mx)
x_sum = np.sum(x_exp, axis = 1, keepdims = True)
res = x_exp / x_sum
return res
x = np.array([[3,2,4],[4,5,6]])
print(softmax(x))
iOs 10+ allow video autoplay inline. but you have to turn off "Low power mode" on your iPhone.
Instead of stop()
you could try with:
sound.pause();
sound.currentTime = 0;
This should have the desired effect.
The usual way to do this in PHP is to put id[]
in your URL instead of just id
:
http://link/foo.php?id[]=1&id[]=2&id[]=3
Then $_GET['id']
will be an array of those values. It's not especially pretty, but it works out of the box.
Firefox now (since 58) uses a SQLite database cert9.db instead of legacy cert8.db. I have made a fix to a solution presented here to make it work with new versions of Firefox:
certificateFile="MyCa.cert.pem"
certificateName="MyCA Name"
for certDB in $(find ~/.mozilla* ~/.thunderbird -name "cert9.db")
do
certDir=$(dirname ${certDB});
#log "mozilla certificate" "install '${certificateName}' in ${certDir}"
certutil -A -n "${certificateName}" -t "TCu,Cuw,Tuw" -i ${certificateFile} -d sql:${certDir}
done
public void setHoursWorked(){
hoursWorked = hours;
}
You haven't defined hours
inside that method. hours is not passed in as a parameter, it's not declared as a variable, and it's not being used as a class member, so you get that error.
"Edit -> EOL Conversion". You can convert to Windows/Linux/Mac EOL there. The current format is displayed in the status bar.
Using direct conditions (like ==, !=, !condition) will have a slight performance improvement over the .equals(condition) as in one case you are calling the method from an object whereas direct comparisons are performed directly.
Manual load related System.Data.SQLite assembly can resolve this.
Changed gatapia's Code as below:
public static void LoadSQLLiteAssembly()
{
Uri dir = new Uri(Assembly.GetExecutingAssembly().CodeBase);
FileInfo fi = new FileInfo(dir.AbsolutePath);
string appropriateFile = Path.Combine(fi.Directory.FullName, GetAppropriateSQLLiteAssembly());
Assembly.LoadFrom(appropriateFile);
}
private static string GetAppropriateSQLLiteAssembly()
{
string pa = Environment.GetEnvironmentVariable("PROCESSOR_ARCHITECTURE");
string arch = ((String.IsNullOrEmpty(pa) || String.Compare(pa, 0, "x86", 0, 3, true) == 0) ? "32" : "64");
return "System.Data.SQLite.x" + arch + ".DLL";
}
The problem is with sprintf
sprintf(aa,"%lf",a);
%lf says to interpet "a" as a "long double" (16 bytes) but it is actually a "double" (8 bytes). Use this instead:
sprintf(aa, "%f", a);
More details here on cplusplus.com
PHP arrays are both integer-indexed and string-indexed. You can even mix them:
array('red', 'green', 'white', 'color3'=>'blue', 3=>'yellow');
What do you want the index to be for the value 'blue'
? Is it 3? But that's actually the index of the value 'yellow'
, so that would be an ambiguity.
Another solution for you is to coerce the array to an integer-indexed list of values.
foreach (array_values($array) as $i => $value) {
echo "$i: $value\n";
}
Output:
0: red
1: green
2: white
3: blue
4: yellow
'%.3f'%(1324343032.324325235)
It's OK just in this particular case.
Simply change the number a little bit:
1324343032.324725235
And then:
'%.3f'%(1324343032.324725235)
gives you 1324343032.325
Try this instead:
def trun_n_d(n,d):
s=repr(n).split('.')
if (len(s)==1):
return int(s[0])
return float(s[0]+'.'+s[1][:d])
Another option for trun_n_d:
def trun_n_d(n,d):
dp = repr(n).find('.') #dot position
if dp == -1:
return int(n)
return float(repr(n)[:dp+d+1])
Yet another option ( a oneliner one) for trun_n_d [this, assumes 'n' is a str and 'd' is an int]:
def trun_n_d(n,d):
return ( n if not n.find('.')+1 else n[:n.find('.')+d+1] )
trun_n_d gives you the desired output in both, Python 2.7 and Python 3.6
trun_n_d(1324343032.324325235,3) returns 1324343032.324
Likewise, trun_n_d(1324343032.324725235,3) returns 1324343032.324
Note 1 In Python 3.6 (and, probably, in Python 3.x) something like this, works just fine:
def trun_n_d(n,d):
return int(n*10**d)/10**d
But, this way, the rounding ghost is always lurking around.
Note 2 In situations like this, due to python's number internals, like rounding and lack of precision, working with n as a str is way much better than using its int counterpart; you can always cast your number to a float at the end.
"Optional parameter" means "type of this parameter is optional". It does not mean "This parameter is optional and, therefore, can be ignored when you call the function".
The term "optional parameter" appears to be confusing. To clarify, it's more accurate to say "optional type parameter" instead of "optional parameter" as the word "optional" here is only meant to describe the type of parameter value and nothing else.
The answer below uses git log
:
I mentioned a similar approach in 2009 with "Unable to show a Git tree in terminal":
git log --graph --pretty=oneline --abbrev-commit
But the full one I have been using is in "How to display the tag name and branch name using git log --graph" (2011):
git config --global alias.lgb "log --graph --pretty=format:'%Cred%h%Creset -%C(yellow)%d%Creset %s %Cgreen(%cr) %C(bold blue)<%an>%Creset%n' --abbrev-commit --date=relative --branches"
git lgb
Original answer (2010)
git show-branch --list
comes close of what you are looking for (with the topo order)
--topo-order
By default, the branches and their commits are shown in reverse chronological order.
This option makes them appear in topological order (i.e., descendant commits are shown before their parents).
But the tool git wtf can help too. Example:
$ git wtf
Local branch: master
[ ] NOT in sync with remote (needs push)
- Add before-search hook, for shortcuts for custom search queries. [4430d1b] (edwardzyang@...; 7 days ago)
Remote branch: origin/master ([email protected]:sup/mainline.git)
[x] in sync with local
Feature branches:
{ } origin/release-0.8.1 is NOT merged in (1 commit ahead)
- bump to 0.8.1 [dab43fb] (wmorgan-sup@...; 2 days ago)
[ ] labels-before-subj is NOT merged in (1 commit ahead)
- put labels before subject in thread index view [790b64d] (marka@...; 4 weeks ago)
{x} origin/enclosed-message-display-tweaks merged in
(x) experiment merged in (only locally)
NOTE: working directory contains modified files
git-wtf
shows you:
- How your branch relates to the remote repo, if it's a tracking branch.
- How your branch relates to non-feature ("version") branches, if it's a feature branch.
- How your branch relates to the feature branches, if it's a version branch
if needle in haystack:
is the normal use, as @Michael says -- it relies on the in
operator, more readable and faster than a method call.
If you truly need a method instead of an operator (e.g. to do some weird key=
for a very peculiar sort...?), that would be 'haystack'.__contains__
. But since your example is for use in an if
, I guess you don't really mean what you say;-). It's not good form (nor readable, nor efficient) to use special methods directly -- they're meant to be used, instead, through the operators and builtins that delegate to them.
In modern browsers you could use a CSS3 & HTML5 progress Element!
progress {_x000D_
width: 40%;_x000D_
display: block; /* default: inline-block */_x000D_
margin: 2em auto;_x000D_
padding: 3px;_x000D_
border: 0 none;_x000D_
background: #444;_x000D_
border-radius: 14px;_x000D_
}_x000D_
progress::-moz-progress-bar {_x000D_
border-radius: 12px;_x000D_
background: orange;_x000D_
_x000D_
}_x000D_
/* webkit */_x000D_
@media screen and (-webkit-min-device-pixel-ratio:0) {_x000D_
progress {_x000D_
height: 25px;_x000D_
}_x000D_
}_x000D_
progress::-webkit-progress-bar {_x000D_
background: transparent;_x000D_
} _x000D_
progress::-webkit-progress-value { _x000D_
border-radius: 12px;_x000D_
background: orange;_x000D_
}
_x000D_
<progress max="100" value="40"></progress>
_x000D_
If you do "git status" while having a merge conflict, the first thing git shows you is how to abort the merge.
If the data is actually a factor
then you can use the levels()
function, e.g.
levels( data$product_code )
If it's not a factor, but it should be, you can convert it to factor first by using the factor()
function, e.g.
levels( factor( data$product_code ) )
Another option, as mentioned above, is the unique()
function:
unique( data$product_code )
The main difference between the two (when applied to a factor
) is that levels
will return a character vector in the order of levels, including any levels that are coded but do not occur. unique
will return a factor
in the order the values first appear, with any non-occurring levels omitted (though still included in levels
of the returned factor).
For IntelliJ 20.1 or above, on Mac OSX:
IntelliJ IDEA -> Editor -> General -> Appearance -> Show line numbers
Point to be noted: Always look for Editor
For shortcut:
? + ? + A (command + shift + A)
and click on the pop up to turn on Show line numbers
and you are good to go.
Along the same lines as @Eric's answer, but without using a 'NULL'
symbol.
(Field1 = Field2) OR (ISNULL(Field1, Field2) IS NULL)
This will be true only if both values are non-NULL
, and equal each other, or both values are NULL
There were several problems in your code. Here you have a functional version you can analyze (Lets set 'hello' as the target word):
word = 'hello'
so_far = "-" * len(word) # Create variable so_far to contain the current guess
while word != so_far: # if still not complete
print(so_far)
guess = input('>> ') # get a char guess
if guess in word:
print("\nYes!", guess, "is in the word!")
new = ""
for i in range(len(word)):
if guess == word[i]:
new += guess # fill the position with new value
else:
new += so_far[i] # same value as before
so_far = new
else:
print("try_again")
print('finish')
I tried to write it for py3k with a py2k ide, be careful with errors.
It turns out that Popper.js doesn't provide compiled files on its GitHub repository. Therefore, one has to compile the project on his/her own or download compiled files from CDNs. It cannot be automatically imported.
If you're using a support library, you'll want to do something like this:
FragmentManager manager = getSupportFragmentManager();
Fragment fragment = manager.findFragmentById(R.id.my_fragment);
fragment.myMethod();
I instinctively read it as "different from". "!=" hits me milliseconds after.
The following works for Python 2.7. Save this script and launch it:
https://raw.github.com/pypa/pip/master/contrib/get-pip.py
Pip is installed, then add the path to your environment :
C:\Python27\Scripts
Finally
pip install virtualenv
Also you need Microsoft Visual C++ 2008 Express to get the good compiler and avoid these kind of messages when installing packages:
error: Unable to find vcvarsall.bat
If you have a 64-bit version of Windows 7, you may read 64-bit Python installation issues on 64-bit Windows 7 to successfully install the Python executable package (issue with registry entries).
In Visual C++ the project options under, Output Files I believe has an option for outputing the ASM listing with source code. So you will see the C/C++ source code and the resulting ASM all in the same file.
Just change from ProgressDialog
to ProgressBar
in a layout:
res/layout.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/container">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent" >
//Your content here
</LinearLayout>
<ProgressBar
android:id="@+id/progressBar"
style="?android:attr/progressBarStyleLarge"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:visibility="gone"
android:indeterminateDrawable="@drawable/progress" >
</ProgressBar>
</RelativeLayout>
src/yourPackage/YourActivity.java
public class YourActivity extends Activity{
private ProgressBar bar;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.layout);
bar = (ProgressBar) this.findViewById(R.id.progressBar);
new ProgressTask().execute();
}
private class ProgressTask extends AsyncTask <Void,Void,Void>{
@Override
protected void onPreExecute(){
bar.setVisibility(View.VISIBLE);
}
@Override
protected Void doInBackground(Void... arg0) {
//my stuff is here
}
@Override
protected void onPostExecute(Void result) {
bar.setVisibility(View.GONE);
}
}
}
drawable/progress.xml This is a custom ProgressBar
that i use to change the default colors.
<?xml version="1.0" encoding="utf-8"?>
<!--
Duration = 1 means that one rotation will be done in 1 second. leave it.
If you want to speed up the rotation, increase duration value.
in example 1080 shows three times faster revolution.
make the value multiply of 360, or the ring animates clunky
-->
<rotate xmlns:android="http://schemas.android.com/apk/res/android"
android:fromDegrees="0"
android:pivotX="50%"
android:pivotY="50%"
android:duration="1"
android:toDegrees="360" >
<shape
android:innerRadiusRatio="3"
android:shape="ring"
android:thicknessRatio="8"
android:useLevel="false" >
<size
android:height="48dip"
android:width="48dip" />
<gradient
android:centerColor="@color/color_preloader_center"
android:centerY="0.50"
android:endColor="@color/color_preloader_end"
android:startColor="@color/color_preloader_start"
android:type="sweep"
android:useLevel="false" />
</shape>
</rotate>
In recent browsers you can use:
Object.keys(obj.Data).length
See MDN
For older browsers, use the for-in
loop in Michael Geary's answer.
The accepted answer won't work from 1.2.0-rc1+ (Github issue).
Here's a quick fix created by endorama:
/*global angular */
(function (ng) {
'use strict';
var app = ng.module('ngLoadScript', []);
app.directive('script', function() {
return {
restrict: 'E',
scope: false,
link: function(scope, elem, attr) {
if (attr.type === 'text/javascript-lazy') {
var code = elem.text();
var f = new Function(code);
f();
}
}
};
});
}(angular));
Simply add this file, load ngLoadScript
module as application dependency and use type="text/javascript-lazy"
as type for script you which to load lazily in partials:
<script type="text/javascript-lazy">
console.log("It works!");
</script>
In MySQL, <>
means Not Equal To, just like !=
.
mysql> SELECT '.01' <> '0.01';
-> 1
mysql> SELECT .01 <> '0.01';
-> 0
mysql> SELECT 'zapp' <> 'zappp';
-> 1
see the docs for more info
alos check the level of access to the shared drive. if the access to the shared drive is read only the file will open in read only format.
../
is one directory, Repeat for two directories ../../
or even three: ../../../
and so on.
Defining constants may reduce confusion because you will drill forward into directories verses backwards
You could define some constants like so:
define('BD', '/home/user/public_html/example/');
define('HTMLBD', 'http://example.com/');
When using 'BD' or my 'base directory' it looks like so:
file(BD.'location/of/file.php');
man ssh
gives me this options would could be useful.
-i identity_file Selects a file from which the identity (private key) for RSA or DSA authentication is read. The default is ~/.ssh/identity for protocol version 1, and ~/.ssh/id_rsa and ~/.ssh/id_dsa for pro- tocol version 2. Identity files may also be specified on a per- host basis in the configuration file. It is possible to have multiple -i options (and multiple identities specified in config- uration files).
So you could create an alias in your bash config with something like
alias ssh="ssh -i /path/to/private_key"
I haven't looked into a ssh configuration file, but like the -i
option this too could be aliased
-F configfile Specifies an alternative per-user configuration file. If a configuration file is given on the command line, the system-wide configuration file (/etc/ssh/ssh_config) will be ignored. The default for the per-user configuration file is ~/.ssh/config.
My problem turned out to be blank spaces in the txt file that I was using to feed the WMI Powershell script.
With Git 2.15 (Q4 2017), "git branch
" learned "-c/-C
" to create a new branch by copying an existing one.
See commit c8b2cec (18 Jun 2017) by Ævar Arnfjörð Bjarmason (avar
).
See commit 52d59cc, commit 5463caa (18 Jun 2017) by Sahil Dua (sahildua2305
).
(Merged by Junio C Hamano -- gitster
-- in commit 3b48045, 03 Oct 2017)
branch
: add a--copy
(-c
) option to go with--move
(-m
)Add the ability to
--copy
a branch and its reflog and configuration, this uses the same underlying machinery as the--move
(-m
) option except the reflog and configuration is copied instead of being moved.This is useful for e.g. copying a topic branch to a new version, e.g.
work
towork-2
after submitting thework
topic to the list, while preserving all the tracking info and other configuration that goes with the branch, and unlike--move
keeping the other already-submitted branch around for reference.
Note: when copying a branch, you remain on your current branch.
As Junio C Hamano explains, the initial implementation of this new feature was modifying HEAD, which was not good:
When creating a new branch
B
by copying the branchA
that happens to be the current branch, it also updatesHEAD
to point at the new branch.
It probably was made this way because "git branch -c A B
" piggybacked its implementation on "git branch -m A B
",This does not match the usual expectation.
If I were sitting on a blue chair, and somebody comes and repaints it to red, I would accept ending up sitting on a chair that is now red (I am also OK to stand, instead, as there no longer is my favourite blue chair).But if somebody creates a new red chair, modelling it after the blue chair I am sitting on, I do not expect to be booted off of the blue chair and ending up on sitting on the new red one.
Use this format: myDate = new Date('2011-01-03'); // Mon Jan 03 2011 00:00:00
Beyond usleep, the humble select with NULL file descriptor sets will let you pause with microsecond precision, and without the risk of SIGALRM
complications.
sigtimedwait and sigwaitinfo offer similar behavior.
The <h:outputLink>
renders a fullworthy HTML <a>
element with the proper URL in the href
attribute which fires a bookmarkable GET request. It cannot directly invoke a managed bean action method.
<h:outputLink value="destination.xhtml">link text</h:outputLink>
The <h:commandLink>
renders a HTML <a>
element with an onclick
script which submits a (hidden) POST form and can invoke a managed bean action method. It's also required to be placed inside a <h:form>
.
<h:form>
<h:commandLink value="link text" action="destination" />
</h:form>
The ?faces-redirect=true
parameter on the <h:commandLink>
, which triggers a redirect after the POST (as per the Post-Redirect-Get pattern), only improves bookmarkability of the target page when the link is actually clicked (the URL won't be "one behind" anymore), but it doesn't change the href
of the <a>
element to be a fullworthy URL. It still remains #
.
<h:form>
<h:commandLink value="link text" action="destination?faces-redirect=true" />
</h:form>
Since JSF 2.0, there's also the <h:link>
which can take a view ID (a navigation case outcome) instead of an URL. It will generate a HTML <a>
element as well with the proper URL in href
.
<h:link value="link text" outcome="destination" />
So, if it's for pure and bookmarkable page-to-page navigation like the SO username link, then use <h:outputLink>
or <h:link>
. That's also better for SEO since bots usually doesn't cipher POST forms nor JS code. Also, UX will be improved as the pages are now bookmarkable and the URL is not "one behind" anymore.
When necessary, you can do the preprocessing job in the constructor or @PostConstruct
of a @RequestScoped
or @ViewScoped
@ManagedBean
which is attached to the destination page in question. You can make use of @ManagedProperty
or <f:viewParam>
to set GET parameters as bean properties.
Temporal types are the set of time-based types that can be used in persistent state mappings.
The list of supported temporal types includes the three java.sql
types java.sql.Date
, java.sql.Time
, and java.sql.Timestamp
, and it includes the two java.util
types java.util.Date
and java.util.Calendar
.
The java.sql
types are completely hassle-free. They act just like any other simple mapping type and do not need any special consideration.
The two java.util
types need additional metadata, however, to indicate which of the JDBC java.sql
types to use when communicating with the JDBC driver. This is done by annotating them with the @Temporal
annotation and specifying the JDBC type as a value of the TemporalType
enumerated type.
There are three enumerated values of DATE, TIME, and TIMESTAMP to represent each of the java.sql
types.
I have created the following class and used across the application wherever required in place of GridView
:
/// <summary>
/// Represents a view mode that displays data items in columns for a System.Windows.Controls.ListView control with auto sized columns based on the column content
/// </summary>
public class AutoSizedGridView : GridView
{
protected override void PrepareItem(ListViewItem item)
{
foreach (GridViewColumn column in Columns)
{
// Setting NaN for the column width automatically determines the required
// width enough to hold the content completely.
// If the width is NaN, first set it to ActualWidth temporarily.
if (double.IsNaN(column.Width))
column.Width = column.ActualWidth;
// Finally, set the column with to NaN. This raises the property change
// event and re computes the width.
column.Width = double.NaN;
}
base.PrepareItem(item);
}
}
Have you looked at the Maven Dependency Plugin ? That won't remove stuff for you but has tools to allow you to do the analysis yourself. I'm thinking particularly of
mvn dependency:tree
Try the following:
for i in {1..600}; do echo wget http://example.com/search/link$(($i % 5)); done
The $(( ))
syntax does an arithmetic evaluation of the contents.
If the divs are hidden, they will never trigger the mouseover
event.
You will have to listen to the event of some other unhidden element.
You can consider wrapping your hidden divs into container divs that remain visible, and then act on the mouseover
event of these containers.
<div style="width: 80px; height: 20px; background-color: red;" _x000D_
onmouseover="document.getElementById('div1').style.display = 'block';">_x000D_
<div id="div1" style="display: none;">Text</div>_x000D_
</div>
_x000D_
You could also listen for the mouseout
event if you want the div to disappear when the mouse leaves the container div:
onmouseout="document.getElementById('div1').style.display = 'none';"
For my blog I use http://hilite.me/ to format source code. It supports lots of formats and outputs rather clean html. But if you have lots of code snippets then you have to do a lot of copy paste. For formatting Python code I've also used Pygments (blog post).
The simplest option is to use a global variable. Then create a function that gets the current word.
current_word = ''
def oneFunction(lists):
global current_word
word=random.choice(lists[category])
current_word = word
def anotherFunction():
for letter in get_word():
print("_",end=" ")
def get_word():
return current_word
The advantage of this is that maybe your functions are in different modules and need to access the variable.
Try this:
class Flonetwork(Object):
def __init__(self,adj = {},flow={}):
self.adj = adj
self.flow = flow
Arrays are default passed by pointers. You can try modifying an array inside a function call for better understanding.
In Log4j 2, you can use Logger.catching() to log a stacktrace from an exception that was caught.
try {
String msg = messages[messages.length];
logger.error("An exception should have been thrown");
} catch (Exception ex) {
logger.catching(ex);
}
It surprises me that this hasn't been mentioned yet, so for the sake of completeness...
You can perform list unpacking with the "splat operator": *
, which will also copy elements of your list.
old_list = [1, 2, 3]
new_list = [*old_list]
new_list.append(4)
old_list == [1, 2, 3]
new_list == [1, 2, 3, 4]
The obvious downside to this method is that it is only available in Python 3.5+.
Timing wise though, this appears to perform better than other common methods.
x = [random.random() for _ in range(1000)]
%timeit a = list(x)
%timeit a = x.copy()
%timeit a = x[:]
%timeit a = [*x]
#: 2.47 µs ± 38.1 ns per loop (mean ± std. dev. of 7 runs, 100000 loops each)
#: 2.47 µs ± 54.6 ns per loop (mean ± std. dev. of 7 runs, 100000 loops each)
#: 2.39 µs ± 58.2 ns per loop (mean ± std. dev. of 7 runs, 100000 loops each)
#: 2.22 µs ± 43.2 ns per loop (mean ± std. dev. of 7 runs, 100000 loops each)
For Sybase ASE, sp_columns table_name will return all the table metadata you are looking for.
BindingResult is used for validation..
Example:-
public @ResponseBody String nutzer(@ModelAttribute(value="nutzer") Nutzer nutzer, BindingResult ergebnis){
String ergebnisText;
if(!ergebnis.hasErrors()){
nutzerList.add(nutzer);
ergebnisText = "Anzahl: " + nutzerList.size();
}else{
ergebnisText = "Error!!!!!!!!!!!";
}
return ergebnisText;
}
Maybe Iterator’s remove() method? The JDK’s default collection classes should all creator iterators that support this method.
Incase if you don't want to have a separate button, here is a another way. Attached a gesture on imageView itself, where on tap of image a alert will popup with two option. You will have the option to choose either from gallery/photo library or to cancel the alert.
import UIKit
import CoreData
class AddDetailsViewController: UIViewController, UITextFieldDelegate, UIImagePickerControllerDelegate, UINavigationControllerDelegate {
@IBOutlet weak var imageView: UIImageView!
var picker:UIImagePickerController? = UIImagePickerController()
@IBAction func saveButton(sender: AnyObject) {
let managedContext = (UIApplication.sharedApplication().delegate as? AppDelegate)!.managedObjectContext
let entity = NSEntityDescription.entityForName("Person", inManagedObjectContext: managedContext)
let person = Person(entity: entity!, insertIntoManagedObjectContext: managedContext)
person.image = UIImageJPEGRepresentation(imageView.image!, 1.0) //imageView.image
do {
try person.managedObjectContext?.save()
//people.append(person)
} catch let error as NSError {
print("Could not save \(error)")
}
}
override func viewDidLoad() {
super.viewDidLoad()
let tapGesture = UITapGestureRecognizer(target: self, action: #selector(AddDetailsViewController.tapGesture(_:)))
imageView.addGestureRecognizer(tapGesture)
imageView.userInteractionEnabled = true
picker?.delegate = self
// Do any additional setup after loading the view.
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func tapGesture(gesture: UIGestureRecognizer) {
let alert:UIAlertController = UIAlertController(title: "Profile Picture Options", message: nil, preferredStyle: UIAlertControllerStyle.ActionSheet)
let gallaryAction = UIAlertAction(title: "Open Gallary", style: UIAlertActionStyle.Default) {
UIAlertAction in self.openGallary()
}
let cancelAction = UIAlertAction(title: "Cancel", style: UIAlertActionStyle.Cancel) {
UIAlertAction in self.cancel()
}
alert.addAction(gallaryAction)
alert.addAction(cancelAction)
self.presentViewController(alert, animated: true, completion: nil)
}
func openGallary() {
picker!.allowsEditing = false
picker!.sourceType = UIImagePickerControllerSourceType.PhotoLibrary
presentViewController(picker!, animated: true, completion: nil)
}
func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : AnyObject]) {
if let pickedImage = info[UIImagePickerControllerOriginalImage] as? UIImage {
imageView.contentMode = .ScaleAspectFit
imageView.image = pickedImage
}
dismissViewControllerAnimated(true, completion: nil)
}
func cancel(){
print("Cancel Clicked")
}
}
Adding more to the question, implemented the logic to store images in CoreData.
JSON doesn't require you to do that, it allows you to do that. It also allows you to use "\u0061" for "A", but it's not required. Allowing \/
helps when embedding JSON in a <script>
tag, which doesn't allow </
inside strings, like Seb points out.
Some of Microsoft's ASP.NET Ajax/JSON API's use this loophole to add extra information, e.g., a datetime will be sent as "\/Date(milliseconds)\/"
. (Yuck)
You don't need CSS for this.
<img src="abc"/>
now with link:
<a href="#myLink"><img src="abc"/></a>
Or with jquery, later on, you can use the wrap property, see these questions answer:
You can use the expect
utility to drive all programs that read from a tty (as opposed to stdin, which is what passwd does). Expect comes with ready to run examples for all sorts of interactive problems, like passwd entry.
I had to remove packages folder close and re-open (VS2015) solution. I was not migrating and I did not have packages checked into source control. All I can say is something got messed up and this fixed it.
Most of the answers don't include good implementation of childViewControllerForStatusBarStyle
method for UINavigationController
. According to my experience you should handle such cases as when transparent view controller is presented over navigation controller. In these cases you should pass control to your modal controller (visibleViewController
), but not when it's disappearing.
override var childViewControllerForStatusBarStyle: UIViewController? {
var childViewController = visibleViewController
if let controller = childViewController, controller.isBeingDismissed {
childViewController = topViewController
}
return childViewController?.childViewControllerForStatusBarStyle ?? childViewController
}
recently I saw that sometimes the flash player doesn't recognize &wmode=opaque
, istead you should pass &WMode=opaque
too (notice the uppercase).
For most switch
and most if-then-else
blocks, I can't imagine that there are any appreciable or significant performance related concerns.
But here's the thing: if you're using a switch
block, its very use suggests that you're switching on a value taken from a set of constants known at compile time. In this case, you really shouldn't be using switch
statements at all if you can use an enum
with constant-specific methods.
Compared to a switch
statement, an enum provides better type safety and code that is easier to maintain. Enums can be designed so that if a constant is added to the set of constants, your code won't compile without providing a constant-specific method for the new value. On the other hand, forgetting to add a new case
to a switch
block can sometimes only be caught at run time if you're lucky enough to have set your block up to throw an exception.
Performance between switch
and an enum
constant-specific method should not be significantly different, but the latter is more readable, safer, and easier to maintain.
You can use the following code for your requirement
map.forEach((k,v)->System.out.println("Item : " + k + " Count : " + v));
In intellij8 I was using a specific plugin "Jar Tool" that is configurable and allows to pack a JAR archive.
if you want to stay DRY, use an include.
{% if foo %}
{% with a as b %}
{% include "snipet.html" %}
{% endwith %}
{% else %}
{% with bar as b %}
{% include "snipet.html" %}
{% endwith %}
{% endif %}
or, even better would be to write a method on the model that encapsulates the core logic:
def Patient(models.Model):
....
def get_legally_responsible_party(self):
if self.age > 18:
return self
else:
return self.parent
Then in the template:
{% with patient.get_legally_responsible_party as p %}
Do html stuff
{% endwith %}
Then in the future, if the logic for who is legally responsible changes you have a single place to change the logic -- far more DRY than having to change if statements in a dozen templates.
A browser request "127.0.0.1/somefile.html" arrives unchanged to the local webserver, while "localhost/somefile.html" may arrive as "0:0:0:0:0:0:0:1/somefile.html" if IPv6 is supported. So the latter can be processed as going from a domain to another.
Changing mvn clean
to mvn clean --file *.pom
fixed this issue for me.
Make sure that all these libs are in your class path:
compile(group: 'com.sun.jersey', name: 'jersey-core', version: '1.19.4')
compile(group: 'com.sun.jersey', name: 'jersey-server', version: '1.19.4')
compile(group: 'com.sun.jersey', name: 'jersey-servlet', version: '1.19.4')
compile(group: 'com.sun.jersey', name: 'jersey-json', version: '1.19.4')
compile(group: 'com.sun.jersey', name: 'jersey-client', version: '1.19.4')
compile(group: 'javax.ws.rs', name: 'jsr311-api', version: '1.1.1')
compile(group: 'org.codehaus.jackson', name: 'jackson-core-asl', version: '1.9.2')
compile(group: 'org.codehaus.jackson', name: 'jackson-mapper-asl', version: '1.9.2')
compile(group: 'org.codehaus.jackson', name: 'jackson-core-asl', version: '1.9.2')
compile(group: 'org.codehaus.jackson', name: 'jackson-jaxrs', version: '1.9.2')
compile(group: 'org.codehaus.jackson', name: 'jackson-xc', version: '1.9.2')
Add "Pojo Mapping" and "Jackson Provider" to the jersey client config:
ClientConfig clientConfig = new DefaultClientConfig();
clientConfig.getFeatures().put(JSONConfiguration.FEATURE_POJO_MAPPING, Boolean.TRUE);
clientConfig.getClasses().add(JacksonJsonProvider.class);
This solve to me!
ClientResponse response = null;
response = webResource
.type(MediaType.APPLICATION_JSON)
.accept(MediaType.APPLICATION_JSON)
.get(ClientResponse.class);
if (response.getStatus() == Response.Status.OK.getStatusCode()) {
MyClass myclass = response.getEntity(MyClass.class);
System.out.println(myclass);
}
The Android plugin 0.8.x doesn't support Gradle 1.11, you need to use 1.10.
You can read the proper error message in the "Gradle Console" tab.
EDIT
You need to change gradle/wrapper/gradle-wrapper.properties
file in this way:
distributionBase=GRADLE_USER_HOME
distributionPath=wrapper/dists
zipStoreBase=GRADLE_USER_HOME
zipStorePath=wrapper/dists
distributionUrl=http\://services.gradle.org/distributions/gradle-1.10-all.zip
Could someone explain to me, how to call the move method with the variable RIGHT
>>> myMissile = MissileDevice(myBattery) # looks like you need a battery, don't know what that is, you figure it out.
>>> myMissile.move(MissileDevice.RIGHT)
If you have programmed in any other language with classes, besides python, this sort of thing
class Foo:
bar = "baz"
is probably unfamiliar. In python, the class is a factory for objects, but it is itself an object; and variables defined in its scope are attached to the class, not the instances returned by the class. to refer to bar
, above, you can just call it Foo.bar
; you can also access class attributes through instances of the class, like Foo().bar
.
Im utterly baffled about what 'self' refers too,
>>> class Foo:
... def quux(self):
... print self
... print self.bar
... bar = 'baz'
...
>>> Foo.quux
<unbound method Foo.quux>
>>> Foo.bar
'baz'
>>> f = Foo()
>>> f.bar
'baz'
>>> f
<__main__.Foo instance at 0x0286A058>
>>> f.quux
<bound method Foo.quux of <__main__.Foo instance at 0x0286A058>>
>>> f.quux()
<__main__.Foo instance at 0x0286A058>
baz
>>>
When you acecss an attribute on a python object, the interpreter will notice, when the looked up attribute was on the class, and is a function, that it should return a "bound" method instead of the function itself. All this does is arrange for the instance to be passed as the first argument.
select E1.emp_id [Emp_id],E1.emp_name [Emp_name],
E2.emp_mgr_id [Mgr_id],E2.emp_name [Mgr_name]
from [tblEmployeeDetails] E1 left outer join
[tblEmployeeDetails] E2
on E1.emp_mgr_id=E2.emp_id
Normally when you try to select a node using xpath your xpath-engine will return null or equivalent if the node doesn't exists.
xpath: "/Consumers/Consumer/DataSources/Credit/CreditReport/AttachedXml"
If your using xsl check out this question for an answer:
In case of image stacks, I find it easier to use scikit-image
to read, and matplotlib
to show or save. I have handled 16-bit TIFF image stacks with the following code.
from skimage import io
import matplotlib.pyplot as plt
# read the image stack
img = io.imread('a_image.tif')
# show the image
plt.imshow(mol,cmap='gray')
plt.axis('off')
# save the image
plt.savefig('output.tif', transparent=True, dpi=300, bbox_inches="tight", pad_inches=0.0)
for multiple scripts, use this
var loadScript = function(src) {
var tag = document.createElement('script');
tag.async = false;
tag.src = src;
document.getElementsByTagName('body').appendChild(tag);
}
loadScript('//cdnjs.com/some/library.js')
loadScript('//cdnjs.com/some/other/library.js')
If you are trying to return the time like a stopwatch you could use the following API which returns the time in milliseconds since system startup:
Public Declare Function GetTickCount Lib "kernel32.dll" () As Long
Sub testTimer()
Dim t As Long
t = GetTickCount
For i = 1 To 1000000
a = a + 1
Next
MsgBox GetTickCount - t, , "Milliseconds"
End Sub
after http://www.pcreview.co.uk/forums/grab-time-milliseconds-included-vba-t994765.html (as timeGetTime in winmm.dll was not working for me and QueryPerformanceCounter was too complicated for the task needed)
Maybe ICMP packets are blocked by your (mobile) provider. If this code doesn't work on the emulator try to sniff via wireshark or any other sniffer and have a look whats up on the wire when you fire the isReachable() method.
You may also find some info in your device log.
Just get the file extention then assign the file a new name with uniqid and pass the new name to the move_upload_file method. For example:
if(isset($_POST['submit'])){
$total = count($_FILES['files']['tmp_name']);
for($i=0;$i<$total;$i++){
$fileName = $_FILES['files']['name'][$i];
$ext = pathinfo($fileName, PATHINFO_EXTENSION);
$newFileName = uniqid();
$fileDest = 'filesUploaded/'.$newFileName.'.'.$ext;
if($ext === 'pdf' || 'jpeg' || 'JPG'){
move_uploaded_file($_FILES['files']['tmp_name'][$i], $fileDest);
$fileUpload = $newFileName.'.'.$ext[$i].',<br>';
}else{
echo 'Pdfs and jpegs only please';
}
}
}
Try using following command. I haven't tried it but I think it should work.
openssl pkcs8 -topk8 -inform PEM -outform DER -in filename -out filename -nocrypt
Originally we used no-cache many years ago and did run into some problems with stale content with certain browsers... Don't remember the specifics unfortunately.
We had since settled on JUST the use of no-store. Have never looked back or had a single issue with stale content by any browser or intermediaries since.
This space is certainly dominated by reality of implementations vs what happens to have been written in various RFCs. Many proxies in particular tend to think they do a better job of "improving performance" by replacing the policy they are supposed to be following with their own.
Arguments and parameters are different in that parameters are used to different values in the program and The arguments are passed the same value in the program so they are used in c++. But no difference in c. It is the same for arguments and parameters in c.
A slight alternative to the answer provided by @Reza Farshi (which works better in my case) is to write the proxy settings out to /etc/apt/apt.conf
using echo
via the Dockerfile e.g.:
FROM ubuntu:16.04
RUN echo "Acquire::http::proxy \"$HTTP_PROXY\";\nAcquire::https::proxy \"$HTTPS_PROXY\";" > /etc/apt/apt.conf
# Test that we can now retrieve packages via 'apt-get'
RUN apt-get update
The advantage of this approach is that the proxy addresses can be passed in dynamically at image build time, rather than having to copy the settings file over from the host.
e.g.
docker build --build-arg HTTP_PROXY=http://<host>:<port> --build-arg HTTPS_PROXY=http://<host>:<port> .
as per docker build docs.
So, static methods are the methods which can be called without creating the object of a class. For Example :-
@staticmethod
def add(a, b):
return a + b
b = A.add(12,12)
print b
In the above example method add
is called by the class name A
not the object name.
in array example,Its same in php (in_array)
var ur_fit = ["slim_fit", "tailored", "comfort"];
var ur_length = ["length_short", "length_regular", "length_high"];
if(ur_fit.indexOf(data_this)!=-1){
alert("Value is avail in ur_fit array");
}
else if(ur_length.indexOf(data_this)!=-1){
alert("value is avail in ur_legth array");
}
In bootstrap 4.3.1 I can change the background color of the toggler icon to white via the css code.
.navbar-toggler{
background-color:white;
}
And in my opinion the so changed icon looks fine as well on light as on dark background.
The regex for uuid is:
\b[0-9a-f]{8}\b-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-\b[0-9a-f]{12}\b
you could also do <p style="font-weight:bold;"> bold text here </p>
Or change it to height: 0.1em;
orso, minimal size of anything displayable is 1px.
The 0.05 em you are using means, get the current font size in pixels of this elements and give me 5% of it. Which for 12 pixels returns 0.6 pixels which is too little to display. if you would turn up the font size of the div to atleast 20pixels it would display fine. I suppose Chrome doesnt round up sizes to be atleast 1pixel where other browsers do.
I had a similar error. Changing the JDBC URL to use 127.0.0.1 instead of localhost helped.
Also had tried changing entries in catalina.policy file but that did not help. The entry I changed was for - java.net.SocketPermission
This worked for me as well:
Get-ADUser -Filter * -SearchBase "ou=OU,dc=Domain,dc=com" -Properties Enabled, CanonicalName, Displayname, Givenname, Surname, EmployeeNumber, EmailAddress, Department, StreetAddress, Title | select Enabled, CanonicalName, Displayname, GivenName, Surname, EmployeeNumber, EmailAddress, Department, Title | Export-CSV "C:\output.csv"
Very Simple. Just download pip from https://bootstrap.pypa.io/get-pip.py . Save the file in some forlder or dekstop. I saved the file in my D drive.Then from your command prompt navigate to the folder where you have downloaded pip. Then type there
python -get-pip.py
For MySQL, you can do it like this:
CREATE TABLE New_Users SELECT * FROM Old_Users group by ID;
Another approach would be using ng-keypress ,
<input type="text" ng-model="data" ng-keypress="($event.charCode==13)? myfunc() : return">
This does the same, enhanced with CONTAINS:
Function SingleCellExtract(LookupValue As String, LookupRange As Range, ColumnNumber As Integer, Char As String)
Dim I As Long
Dim xRet As String
For I = 1 To LookupRange.Columns(1).Cells.Count
If InStr(1, LookupRange.Cells(I, 1), LookupValue) > 0 Then
If xRet = "" Then
xRet = LookupRange.Cells(I, ColumnNumber) & Char
Else
xRet = xRet & "" & LookupRange.Cells(I, ColumnNumber) & Char
End If
End If
Next
SingleCellExtract = Left(xRet, Len(xRet) - 1)
End Function
you should add plug in to your local setting of firefox in your user home
vladimir@shinsengumi ~/.mozilla/plugins $ pwd
/home/vladimir/.mozilla/plugins
vladimir@shinsengumi ~/.mozilla/plugins $ ls -ltr
lrwxrwxrwx 1 vladimir vladimir 60 Jan 1 23:06 libnpjp2.so -> /home/vladimir/Install/jdk1.6.0_32/jre/lib/amd64/libnpjp2.so
You might want to do something like this (if you're in java 5 & up)
Scanner scanner = new Scanner(new File("tall.txt"));
int [] tall = new int [100];
int i = 0;
while(scanner.hasNextInt()){
tall[i++] = scanner.nextInt();
}
def countfrequncyinarray(arr1):
r=len(arr1)
return {i:arr1.count(i) for i in range(1,r+1)}
arr1=[4,4,4,4]
a=countfrequncyinarray(arr1)
print(a)
Run dos2unix or similar utility on it to remove the carriage returns (^M).
This message indicates that your file has dos-style lineendings:
-bash: /backup/backup.sh: /bin/bash^M: bad interpreter: No such file or directory
Utilities like dos2unix
will fix it:
dos2unix <backup.bash >improved-backup.sh
Or, if no such utility is installed, you can accomplish the same thing with translate:
tr -d "\015\032" <backup.bash >improved-backup.sh
As for how those characters got there in the first place, @MadPhysicist had some good comments.
Using the new nested query syntax
with q(name, id, parent_id, parent_name) as (
select
t1.name, t1.id,
null as parent_id, null as parent_name
from t1
where t1.id = 1
union all
select
t1.name, t1.id,
q.id as parent_id, q.name as parent_name
from t1, q
where t1.parent_id = q.id
)
select * from q
Use bit arithmetic:
if((x & 1) == 0)
printf("EVEN!\n");
else
printf("ODD!\n");
This is faster than using division or modulus.
If Distinct()
doesn't produce unique results, try this one:
var filteredWC = tblWorkCenter.GroupBy(cc => cc.WCID_I).Select(grp => grp.First()).Select(cc => new Model.WorkCenter { WCID = cc.WCID_I }).OrderBy(cc => cc.WCID);
ObservableCollection<Model.WorkCenter> WorkCenter = new ObservableCollection<Model.WorkCenter>(filteredWC);
To work only chrome or safari, try it:
@media screen and (-webkit-min-device-pixel-ratio:0) {
/* Safari and Chrome */
.myClass {
color:red;
}
/* Safari only override */
::i-block-chrome,.myClass {
color:blue;
}}
Those are two different things, as others have mentioned.
When you specify # -*- coding: utf-8 -*-
, you're telling Python the source file you've saved is utf-8
. The default for Python 2 is ASCII (for Python 3 it's utf-8
). This just affects how the interpreter reads the characters in the file.
In general, it's probably not the best idea to embed high unicode characters into your file no matter what the encoding is; you can use string unicode escapes, which work in either encoding.
When you declare a string with a u
in front, like u'This is a string'
, it tells the Python compiler that the string is Unicode, not bytes. This is handled mostly transparently by the interpreter; the most obvious difference is that you can now embed unicode characters in the string (that is, u'\u2665'
is now legal). You can use from __future__ import unicode_literals
to make it the default.
This only applies to Python 2; in Python 3 the default is Unicode, and you need to specify a b
in front (like b'These are bytes'
, to declare a sequence of bytes).
A shorter version of converting List to Array of specific type (for example Long):
Long[] myArray = myList.toArray(Long[]::new);
In my experience this error is pretty common, for some reason jersey sometimes has problems parsing custom java types. Usually all you have to do is make sure that you respect the following 3 conditions:
However, I have ran into cases where this just was not enough. Then you can always wrap you custom data type in a GenericEntity and pass it as such to your ResponseBuilder:
GenericEntity<CustomDataType> entity = new GenericEntity<CustomDataType>(myObj) {};
return Response.status(httpCode).entity(entity).build();
This way you are trying to help jersey to find the proper/relevant serialization provider for you object. Well, sometimes this also is not enough. In my case I was trying to produce a text/plain from a custom data type. Theoretically jersey should have used the StringMessageProvider, but for some reason that I did not manage to discover it was giving me this error:
org.glassfish.jersey.message.internal.MessageBodyProviderNotFoundException: MessageBodyWriter not found for media type=text/plain
So what solved the problem for me was to do my own serialization with jackson's writeValueAsString(). I'm not proud of it but at the end of the day I can deliver an acceptable solution.
Got hit by the same issue while accessing SQLServer from IIS. Adding TrustServerCertificate=True didnot help.
Could see a comment in MS docs: Make sure the SQLServer service account has access to the TLS Certificate you are using. (NT Service\MSSQLSERVER)
Open personal store and right click on the certificate -> manage private keys -> Add the SQL service account and give full control.
Restart the SQL service. It worked.
After doing some research, this was happening in Ruby's XMLRPC::Client
library - which uses NET::HTTP
. The client uses the start()
method in NET::HTTP
which keeps the connection open for future requests.
This happened precisely at 30 seconds after the last requests - so my assumption here is that the server it's hitting is closing requests after that time. I'm not sure what the default is for NET::HTTP
to keep the request open - but I'm about to test with 60 seconds to see if that solves the issue.
For API > 23 with Day/Night support you can use the extension below. Important part to understand is that android:fitsSystemWindows="true"
uses padding to move within insets (like you would with a Toolbar). Therefore it does not make sense to place it at your root layout (except DrawerLayout, CoordinatorLayout, ... these use their own implementation).
<style name="Theme.YourApp.DayNight" parent="Theme.MaterialComponents.DayNight.NoActionBar">
...
<item name="android:windowLightStatusBar">@bool/isDayMode</item>
<item name="android:statusBarColor">@android:color/transparent</item>
</style>
<androidx.constraintlayout.widget.ConstraintLayout
...>
<com.google.android.material.appbar.MaterialToolbar
...
android:fitsSystemWindows="true">
</androidx.constraintlayout.widget.ConstraintLayout
fun Activity.transparentStatusBar() {
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.R) {
window.decorView.systemUiVisibility = (View.SYSTEM_UI_FLAG_LAYOUT_STABLE or View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN)
} else {
window.setDecorFitsSystemWindows(false)
}
}
Then call it like so:
class YourActivity : AppCompatActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
...
transparentStatusBar()
}
}
Check these slides by Chris Banes: Becoming a master window fitter
Edit: If you have problems with content floating behind your navigation bar, use
// using Insetter
binding.yourViewHere.applySystemWindowInsetsToPadding(bottom = true)
One thing I find that is often missing from these is an ability to look up row locks. At least on the larger databases I have worked on, row locks are not shown in pg_locks (if they were, pg_locks would be much, much larger and there isn't a real data type to show the locked row in that view properly).
I don't know that there is a simple solution to this but usually what I do is look at the table where the lock is waiting and search for rows where the xmax is less than the transaction id present there. That usually gives me a place to start, but it is a bit hands-on and not automation friendly.
Note that shows you uncommitted writes on rows on those tables. Once committed, the rows are not visible in the current snapshot. But for large tables, that is a pain.
You want the --stat
option of git diff
, or if you're looking to parse this in a script, the --numstat
option.
git diff --stat <commit-ish> <commit-ish>
--stat
produces the human-readable output you're used to seeing after merges; --numstat
produces a nice table layout that scripts can easily interpret.
I somehow missed that you were looking to do this on multiple commits at the same time - that's a task for git log
. Ron DeVera touches on this, but you can actually do a lot more than what he mentions. Since git log
internally calls the diff machinery in order to print requested information, you can give it any of the diff stat options - not just --shortstat
. What you likely want to use is:
git log --author="Your name" --stat <commit1>..<commit2>
but you can use --numstat
or --shortstat
as well. git log
can also select commits in a variety other ways - have a look at the documentation. You might be interested in things like --since
(rather than specifying commit ranges, just select commits since last week) and --no-merges
(merge commits don't actually introduce changes), as well as the pretty output options (--pretty=oneline, short, medium, full...
).
Here's a one-liner to get total changes instead of per-commit changes from git log (change the commit selection options as desired - this is commits by you, from commit1 to commit2):
git log --numstat --pretty="%H" --author="Your Name" commit1..commit2 | awk 'NF==3 {plus+=$1; minus+=$2} END {printf("+%d, -%d\n", plus, minus)}'
(you have to let git log print some identifying information about the commit; I arbitrarily chose the hash, then used awk to only pick out the lines with three fields, which are the ones with the stat information)
thanks for the ideas but none works here. So i did that... I am using xampp last version on 2014. go to \xampp\apache\conf\extra\httpd-xampp.conf.
we will find this bit of code:
<IfModule php5_module>
**<FilesMatch "\.php$">**
SetHandler application/x-httpd-php
</FilesMatch>
<FilesMatch "\.phps$">
SetHandler application/x-httpd-php-source
</FilesMatch>
PHPINIDir "C:/xampp/php"
</IfModule>
Focus on second line, so we must to change to:
<IfModule php5_module>
**<FilesMatch "\.(php|html)$">**
SetHandler application/x-httpd-php
</FilesMatch>
<FilesMatch "\.phps$">
SetHandler application/x-httpd-php-source
</FilesMatch>
PHPINIDir "C:/xampp/php"
</IfModule>
And that is it. Works good!
In Java 8:
long size = Files.walk(path).mapToLong( p -> p.toFile().length() ).sum();
It would be nicer to use Files::size
in the map step but it throws a checked exception.
UPDATE:
You should also be aware that this can throw an exception if some of the files/folders are not accessible. See this question and another solution using Guava.
Convert the Special characters to apostrophe,
Data <- gsub("[^0-9A-Za-z///' ]","'" , Data ,ignore.case = TRUE)
Below code it to remove extra ''' apostrophe
Data <- gsub("''","" , Data ,ignore.case = TRUE)
Use gsub(..)
function for replacing the special character with apostrophe
Cast the null literal: (DateTime?)null
or (Nullable<DateTime>)null
.
You can also use default(DateTime?)
or default(Nullable<DateTime>)
And, as other answers have noted, you can also apply the cast to the DateTime value rather than to the null literal.
EDIT (adapted from my comment to Prutswonder's answer):
The point is that the conditional operator does not consider the type of its assignment target, so it will only compile if there is an implicit conversion from the type of its second operand to the type of its third operand, or from the type of its third operand to the type of its second operand.
For example, this won't compile:
bool b = GetSomeBooleanValue();
object o = b ? "Forty-two" : 42;
Casting either the second or third operand to object
, however, fixes the problem, because there is an implicit conversion from int to object and also from string to object:
object o = b ? "Forty-two" : (object)42;
or
object o = b ? (object)"Forty-two" : 42;
Also, I add to do the following steps so that the git repo would be correctly linked with the IDE:
$ git reset <commit #>
$ git checkout <file/path>
I hope this was helpful!!
Instead if you want to capitalize each word of a sentence then you can use this code
app.filter('capitalize', function() {
return function(input, scope) {
if (input!=null)
input = input.toLowerCase().split(' ');
for (var i = 0; i < input.length; i++) {
// You do not need to check if i is larger than input length, as your for does that for you
// Assign it back to the array
input[i] = input[i].charAt(0).toUpperCase() + input[i].substring(1);
}
// Directly return the joined string
return input.join(' ');
}
});
and just add filter "capitalize" to your string input, for ex - {{name | capitalize}}
The simple tilde syntax works only for removing quotation marks around the command line parameters being passed into the batch files
SET xyz=%~1
Above batch file code will set xyz to whatever value is being passed as first paramter stripping away the leading and trailing quotations (if present).
But, This simple tilde syntax will not work for other variables that were not passed in as parameters
For all other variable, you need to use expanded substitution syntax that requires you to specify leading and lagging characters to be removed. Effectively we are instructing to remove strip away the first and the last character without looking at what it actually is.
@SET SomeFileName="Some Quoted file name"
@echo %SomeFileName% %SomeFileName:~1,-1%
If we wanted to check what the first and last character was actually quotation before removing it, we will need some extra code as follows
@SET VAR="Some Very Long Quoted String"
If aa%VAR:~0,1%%VAR:~-1%aa == aa""aa SET UNQUOTEDVAR=%VAR:~1,-1%
I use http://gregpike.net/demos/bootstrap-file-input/demo.html:
$('input[type=file]').bootstrapFileInput();
or
$('.file-inputs').bootstrapFileInput();
I find using str.format
much more elegant:
>>> '{0: <5}'.format('s')
's '
>>> '{0: <5}'.format('ss')
'ss '
>>> '{0: <5}'.format('sss')
'sss '
>>> '{0: <5}'.format('ssss')
'ssss '
>>> '{0: <5}'.format('sssss')
'sssss'
If you want to align the string to the right use >
instead of <
:
>>> '{0: >5}'.format('ss')
' ss'
Edit 1:
As mentioned in the comments: the 0
in '{0: <5}'
indicates the argument’s index passed to str.format()
.
Edit 2: In python3 one could use also f-strings:
sub_str='s'
for i in range(1,6):
s = sub_str*i
print(f'{s:>5}')
' s'
' ss'
' sss'
' ssss'
'sssss'
or:
for i in range(1,5):
s = sub_str*i
print(f'{s:<5}')
's '
'ss '
'sss '
'ssss '
'sssss'
of note, in some places above, ' '
(single quotation marks) were added to emphasize the width of the printed strings.
Use this
@Cacheable(value="bookCache", key="#isbn + '_' + #checkWarehouse + '_' + #includeUsed")
I found below SSH commands are robust for export/import huge MySql databases, at least I'm using them for years. Never rely on backups generated via control panels like cPanel WHM, CWP, OVIPanel, etc they may trouble you especially when you're switching between control panels, trust SSH always.
[EXPORT]
$ mysqldump -u root -p example_database| gzip > example_database.sql.gz
[IMPORT]
$ gunzip < example_database.sql.gz | mysql -u root -p example_database
You can use an iframe to display a preview of the page on mouseover:
.box{_x000D_
display: none;_x000D_
width: 100%;_x000D_
}_x000D_
_x000D_
a:hover + .box,.box:hover{_x000D_
display: block;_x000D_
position: relative;_x000D_
z-index: 100;_x000D_
}
_x000D_
This live preview for <a href="https://en.wikipedia.org/">Wikipedia</a>_x000D_
<div class="box">_x000D_
<iframe src="https://en.wikipedia.org/" width = "500px" height = "500px">_x000D_
</iframe>_x000D_
</div> _x000D_
remains open on mouseover.
_x000D_
Here's an example with multiple live previews:
.box{_x000D_
display: none;_x000D_
width: 100%;_x000D_
}_x000D_
_x000D_
a:hover + .box,.box:hover{_x000D_
display: block;_x000D_
position: relative;_x000D_
z-index: 100;_x000D_
}
_x000D_
Live previews for <a href="https://en.wikipedia.org/">Wikipedia</a>_x000D_
<div class="box">_x000D_
<iframe src="https://en.wikipedia.org/" width = "500px" height = "500px">_x000D_
</iframe>_x000D_
</div> _x000D_
and <a href="https://www.jquery.com/">JQuery</a>_x000D_
<div class="box">_x000D_
<iframe src="https://www.jquery.com/" width = "500px" height = "500px">_x000D_
</iframe>_x000D_
</div> _x000D_
will appear when these links are moused over.
_x000D_
If you're using SQL Server, you could add three calculated fields to your table:
Sales (saleID INT, amount INT, created DATETIME)
ALTER TABLE dbo.Sales
ADD SaleYear AS YEAR(Created) PERSISTED
ALTER TABLE dbo.Sales
ADD SaleMonth AS MONTH(Created) PERSISTED
ALTER TABLE dbo.Sales
ADD SaleDay AS DAY(Created) PERSISTED
and now you could easily group by, order by etc. by day, month or year of the sale:
SELECT SaleDay, SUM(Amount)
FROM dbo.Sales
GROUP BY SaleDay
Those calculated fields will always be kept up to date (when your "Created" date changes), they're part of your table, they can be used just like regular fields, and can even be indexed (if they're "PERSISTED") - great feature that's totally underused, IMHO.
Marc
It was mentioned as a comment by @henri-chan, but I think it deserves some more attention:
When you update the content of an element with new html using jQuery/javascript, and this new html contains <script>
tags, those are executed synchronously and thus triggering this error. Same goes for stylesheets.
You know this is happening when you see (multiple) scripts or stylesheets being loaded as XHR
in the console window. (firefox).
try this:
$('#autocomplete').focus(function(){
$(this).val('');
$(this).keydown();
});
and minLength set to 0
works every time :)
I just saw the RSpec's code has some comment on require_relative
being O(1) constant and require
being O(N) linear. So probably the difference is that require_relative
is the preferred one than require
.
The problem is with the way you are printing the Time data
java.util.Date utilDate = new java.util.Date();
java.sql.Timestamp sq = new java.sql.Timestamp(utilDate.getTime());
System.out.println(sa); //this will print the milliseconds as the toString() has been written in that format
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
System.out.println(sdf.format(timestamp)); //this will print without ms
As mentioned in comments, this is a scoping issue. Specifically, $con
is not in scope within your getPosts
function.
You should pass your connection object in as a dependency, eg
function getPosts(mysqli $con) {
// etc
I would also highly recommend halting execution if your connection fails or if errors occur. Something like this should suffice
mysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT); // throw exceptions
$con=mysqli_connect("localhost","xxxx","xxxx","xxxxx");
getPosts($con);
You can use the following query:
UPDATE im
SET mf_item_number = (some value)
FROM item_master im
JOIN group_master gm
ON im.sku = gm.sku
JOIN Manufacturer_Master mm
ON gm.ManufacturerID = mm.ManufacturerID
WHERE im.mf_item_number like 'STA%' AND
gm.manufacturerID = 34 `sql`
Small reusable method can be written for creating person json object to avoid duplicate code
JSONObject getPerson(String firstName, String lastName){
JSONObject person = new JSONObject();
person .put("firstName", firstName);
person .put("lastName", lastName);
return person ;
}
public JSONObject getJsonResponse(){
JSONArray employees = new JSONArray();
employees.put(getPerson("John","Doe"));
employees.put(getPerson("Anna","Smith"));
employees.put(getPerson("Peter","Jones"));
JSONArray managers = new JSONArray();
managers.put(getPerson("John","Doe"));
managers.put(getPerson("Anna","Smith"));
managers.put(getPerson("Peter","Jones"));
JSONObject response= new JSONObject();
response.put("employees", employees );
response.put("manager", managers );
return response;
}
Here is the example in docs:
// with query, resulting in /register?plan=private
router.push({ path: 'register', query: { plan: 'private' }})
Ref: https://router.vuejs.org/en/essentials/navigation.html
As mentioned in those docs, router.replace
works like router.push
So, you seem to have it right in your sample code in question. But I think you may need to include either name
or path
parameter also, so that the router has some route to navigate to. Without a name
or path
, it does not look very meaningful.
This is my current understanding now:
query
is optional for router - some additional info for the component to construct the viewname
or path
is mandatory - it decides what component to show in your <router-view>
.That might be the missing thing in your sample code.
EDIT: Additional details after comments
Have you tried using named routes in this case? You have dynamic routes, and it is easier to provide params and query separately:
routes: [
{ name: 'user-view', path: '/user/:id', component: UserView },
// other routes
]
and then in your methods:
this.$router.replace({ name: "user-view", params: {id:"123"}, query: {q1: "q1"} })
Technically there is no difference between the above and this.$router.replace({path: "/user/123", query:{q1: "q1"}})
, but it is easier to supply dynamic params on named routes than composing the route string. But in either cases, query params should be taken into account. In either case, I couldn't find anything wrong with the way query params are handled.
After you are inside the route, you can fetch your dynamic params as this.$route.params.id
and your query params as this.$route.query.q1
.
Try the following code:
Edittext_name.setKeyListener(DigitsKeyListener.getInstance("0123456789"));
It will allow you to enter just numbers. You cannot enter chars.
if you want to enter chars, not numbers, you can edit the values between the quotes inside getInstance
.
JToken
is the base class for JObject
, JArray
, JProperty
, JValue
, etc. You can use the Children<T>()
method to get a filtered list of a JToken's children that are of a certain type, for example JObject
. Each JObject
has a collection of JProperty
objects, which can be accessed via the Properties()
method. For each JProperty
, you can get its Name
. (Of course you can also get the Value
if desired, which is another JToken
.)
Putting it all together we have:
JArray array = JArray.Parse(json);
foreach (JObject content in array.Children<JObject>())
{
foreach (JProperty prop in content.Properties())
{
Console.WriteLine(prop.Name);
}
}
Output:
MobileSiteContent
PageContent
folks, I got this Bootstrap dropdown working. I modified the click event slightly in order to keep the currently-selected image. And as you see, the USD currency is the default selected :
<div class="btn-group" style="margin:10px;"> <!-- CURRENCY, BOOTSTRAP DROPDOWN -->
<!--<a class="btn btn-primary" href="javascript:void(0);">Currency</a>-->
<a class="btn btn-primary dropdown-toggle" data-toggle="dropdown" href="#"><img src="../../Images/flag-usd-small.png"> USD <span class="caret"></span></a>
<ul class="dropdown-menu">
<li><a href="javascript:void(0);">
<img src="../../Images/flag-aud-small.png" /> AUD</a>
</li>
<li><a href="javascript:void(0);">
<img src="../../Images/flag-cad-small.png" /> CAD</a>
</li>
<li><a href="javascript:void(0);">
<img src="../../Images/flag-cny-small.png" /> CNY</a>
</li>
<li><a href="javascript:void(0);">
<img src="../../Images/flag-gbp-small.png" /> GBP</a>
</li>
<li><a href="javascript:void(0);">
<img src="../../Images/flag-usd-small.png" /> USD</a>
</li>
</ul>
</div>
/* BOOTSTRAP DROPDOWN MENU - Update selected item text and image */
$(".dropdown-menu li a").click(function () {
var selText = $(this).text();
var imgSource = $(this).find('img').attr('src');
var img = '<img src="' + imgSource + '"/>';
$(this).parents('.btn-group').find('.dropdown-toggle').html(img + ' ' + selText + ' <span class="caret"></span>');
});
Otto made a good suggestion. This works for Debian too, as well as any other Debian derivative. The missing piece is what to do when apt-cache search doesn't find something.
$ sudo apt-get install dh-make-perl build-essential apt-file
$ sudo apt-file update
Then whenever you have a random module you wish to install:
$ cd ~/some/path
$ dh-make-perl --build --cpan Some::Random::Module
$ sudo dpkg -i libsome-random-module-perl-0.01-1_i386.deb
This will give you a deb package that you can install to get Some::Random::Module. One of the big benefits here is man pages and sample scripts in addition to the module itself will be placed in your distro's location of choice. If the distro ever comes out with an official package for a newer version of Some::Random::Module, it will automatically be installed when you apt-get upgrade.
You also can do it with functional programming:
from functools import reduce
reduce(lambda df1, df2: df1.merge(df2, "outer"), mydfs)
For Activity:
final View activityRootView = findViewById(R.id.activityRoot);
activityRootView.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
@Override
public void onGlobalLayout() {
Rect r = new Rect();
activityRootView.getWindowVisibleDisplayFrame(r);
int heightDiff = view.getRootView().getHeight() - (r.bottom - r.top);
if (heightDiff > 100) {
//enter your code here
}else{
//enter code for hid
}
}
});
For Fragment:
view = inflater.inflate(R.layout.live_chat_fragment, null);
view.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
@Override
public void onGlobalLayout() {
Rect r = new Rect();
//r will be populated with the coordinates of your view that area still visible.
view.getWindowVisibleDisplayFrame(r);
int heightDiff = view.getRootView().getHeight() - (r.bottom - r.top);
if (heightDiff > 500) { // if more than 100 pixels, its probably a keyboard...
}
}
});
Scrolling div on click of button.
Html Code:-
<div id="textBody" style="height:200px; width:600px; overflow:auto;">
<!------Your content---->
</div>
JQuery code for scrolling div:-
$(function() {
$( "#upBtn" ).click(function(){
$('#textBody').scrollTop($('#textBody').scrollTop()-20);
});
$( "#downBtn" ).click(function(){
$('#textBody').scrollTop($('#textBody').scrollTop()+20);;
});
});
handle.exe http://technet.microsoft.com/en-us/sysinternals/bb896655.aspx
THis has helped me sooooo many times....
The following also seems to work :
for (vector<int>::iterator it = res.begin(); it != res.end(); it++)
{
res.erase(it--);
}
Not sure if there's any flaw in this ?
Suspend the process with CTRL+Z then use the command bg
to resume it in background. For example:
sleep 60
^Z #Suspend character shown after hitting CTRL+Z
[1]+ Stopped sleep 60 #Message showing stopped process info
bg #Resume current job (last job stopped)
More about job control and bg
usage in bash
manual page:
JOB CONTROL
Typing the suspend character (typically ^Z, Control-Z) while a process is running causes that process to be stopped and returns control to bash. [...] The user may then manipulate the state of this job, using the bg command to continue it in the background, [...]. A ^Z takes effect immediately, and has the additional side effect of causing pending output and typeahead to be discarded.bg [jobspec ...]
Resume each suspended job jobspec in the background, as if it had been started with &. If jobspec is not present, the shell's notion of the current job is used.
EDIT
To start a process where you can even kill the terminal and it still carries on running
nohup [command] [-args] > [filename] 2>&1 &
e.g.
nohup /home/edheal/myprog -arg1 -arg2 > /home/edheal/output.txt 2>&1 &
To just ignore the output (not very wise) change the filename to /dev/null
To get the error message set to a different file change the &1
to a filename.
In addition: You can use the jobs
command to see an indexed list of those backgrounded processes. And you can kill a backgrounded process by running kill %1
or kill %2
with the number being the index of the process.
There is one interesting case of "class vs struct" puzzle - situation when you need to return several results from the method: choose which to use. If you know the ValueTuple story - you know that ValueTuple (struct) was added because it should be more effective then Tuple (class). But what does it mean in numbers? Two tests: one is struct/class that have 2 fields, other with struct/class that have 8 fields (with dimension more then 4 - class should become more effective then struct in terms processor ticks, but of course GC load also should be considered).
P.S. Another benchmark for specific case 'sturct or class with collections' is there: https://stackoverflow.com/a/45276657/506147
BenchmarkDotNet=v0.10.10, OS=Windows 10 Redstone 2 [1703, Creators Update] (10.0.15063.726)
Processor=Intel Core i5-2500K CPU 3.30GHz (Sandy Bridge), ProcessorCount=4
Frequency=3233540 Hz, Resolution=309.2586 ns, Timer=TSC
.NET Core SDK=2.0.3
[Host] : .NET Core 2.0.3 (Framework 4.6.25815.02), 64bit RyuJIT
Clr : .NET Framework 4.7 (CLR 4.0.30319.42000), 64bit RyuJIT-v4.7.2115.0
Core : .NET Core 2.0.3 (Framework 4.6.25815.02), 64bit RyuJIT
Method | Job | Runtime | Mean | Error | StdDev | Min | Max | Median | Rank | Gen 0 | Allocated |
------------------ |----- |-------- |---------:|----------:|----------:|---------:|---------:|---------:|-----:|-------:|----------:|
TestStructReturn | Clr | Clr | 17.57 ns | 0.1960 ns | 0.1834 ns | 17.25 ns | 17.89 ns | 17.55 ns | 4 | 0.0127 | 40 B |
TestClassReturn | Clr | Clr | 21.93 ns | 0.4554 ns | 0.5244 ns | 21.17 ns | 23.26 ns | 21.86 ns | 5 | 0.0229 | 72 B |
TestStructReturn8 | Clr | Clr | 38.99 ns | 0.8302 ns | 1.4097 ns | 37.36 ns | 42.35 ns | 38.50 ns | 8 | 0.0127 | 40 B |
TestClassReturn8 | Clr | Clr | 23.69 ns | 0.5373 ns | 0.6987 ns | 22.70 ns | 25.24 ns | 23.37 ns | 6 | 0.0305 | 96 B |
TestStructReturn | Core | Core | 12.28 ns | 0.1882 ns | 0.1760 ns | 11.92 ns | 12.57 ns | 12.30 ns | 1 | 0.0127 | 40 B |
TestClassReturn | Core | Core | 15.33 ns | 0.4343 ns | 0.4063 ns | 14.83 ns | 16.44 ns | 15.31 ns | 2 | 0.0229 | 72 B |
TestStructReturn8 | Core | Core | 34.11 ns | 0.7089 ns | 1.4954 ns | 31.52 ns | 36.81 ns | 34.03 ns | 7 | 0.0127 | 40 B |
TestClassReturn8 | Core | Core | 17.04 ns | 0.2299 ns | 0.2150 ns | 16.68 ns | 17.41 ns | 16.98 ns | 3 | 0.0305 | 96 B |
Code test:
using System;
using System.Text;
using System.Collections.Generic;
using BenchmarkDotNet.Attributes;
using BenchmarkDotNet.Attributes.Columns;
using BenchmarkDotNet.Attributes.Exporters;
using BenchmarkDotNet.Attributes.Jobs;
using DashboardCode.Routines.Json;
namespace Benchmark
{
//[Config(typeof(MyManualConfig))]
[RankColumn, MinColumn, MaxColumn, StdDevColumn, MedianColumn]
[ClrJob, CoreJob]
[HtmlExporter, MarkdownExporter]
[MemoryDiagnoser]
public class BenchmarkStructOrClass
{
static TestStruct testStruct = new TestStruct();
static TestClass testClass = new TestClass();
static TestStruct8 testStruct8 = new TestStruct8();
static TestClass8 testClass8 = new TestClass8();
[Benchmark]
public void TestStructReturn()
{
testStruct.TestMethod();
}
[Benchmark]
public void TestClassReturn()
{
testClass.TestMethod();
}
[Benchmark]
public void TestStructReturn8()
{
testStruct8.TestMethod();
}
[Benchmark]
public void TestClassReturn8()
{
testClass8.TestMethod();
}
public class TestStruct
{
public int Number = 5;
public struct StructType<T>
{
public T Instance;
public List<string> List;
}
public int TestMethod()
{
var s = Method1(1);
return s.Instance;
}
private StructType<int> Method1(int i)
{
return Method2(++i);
}
private StructType<int> Method2(int i)
{
return Method3(++i);
}
private StructType<int> Method3(int i)
{
return Method4(++i);
}
private StructType<int> Method4(int i)
{
var x = new StructType<int>();
x.List = new List<string>();
x.Instance = ++i;
return x;
}
}
public class TestClass
{
public int Number = 5;
public class ClassType<T>
{
public T Instance;
public List<string> List;
}
public int TestMethod()
{
var s = Method1(1);
return s.Instance;
}
private ClassType<int> Method1(int i)
{
return Method2(++i);
}
private ClassType<int> Method2(int i)
{
return Method3(++i);
}
private ClassType<int> Method3(int i)
{
return Method4(++i);
}
private ClassType<int> Method4(int i)
{
var x = new ClassType<int>();
x.List = new List<string>();
x.Instance = ++i;
return x;
}
}
public class TestStruct8
{
public int Number = 5;
public struct StructType<T>
{
public T Instance1;
public T Instance2;
public T Instance3;
public T Instance4;
public T Instance5;
public T Instance6;
public T Instance7;
public List<string> List;
}
public int TestMethod()
{
var s = Method1(1);
return s.Instance1;
}
private StructType<int> Method1(int i)
{
return Method2(++i);
}
private StructType<int> Method2(int i)
{
return Method3(++i);
}
private StructType<int> Method3(int i)
{
return Method4(++i);
}
private StructType<int> Method4(int i)
{
var x = new StructType<int>();
x.List = new List<string>();
x.Instance1 = ++i;
return x;
}
}
public class TestClass8
{
public int Number = 5;
public class ClassType<T>
{
public T Instance1;
public T Instance2;
public T Instance3;
public T Instance4;
public T Instance5;
public T Instance6;
public T Instance7;
public List<string> List;
}
public int TestMethod()
{
var s = Method1(1);
return s.Instance1;
}
private ClassType<int> Method1(int i)
{
return Method2(++i);
}
private ClassType<int> Method2(int i)
{
return Method3(++i);
}
private ClassType<int> Method3(int i)
{
return Method4(++i);
}
private ClassType<int> Method4(int i)
{
var x = new ClassType<int>();
x.List = new List<string>();
x.Instance1 = ++i;
return x;
}
}
}
}
Might be too late and all, but I liked this in case assignment :)
function extractParameters(args) {
function getCase(arg, key) {
return arg.match(new RegExp(`${key}=(.*)`)) || {};
}
args.forEach((arg) => {
console.log("arg: " + arg);
let match;
switch (arg) {
case (match = getCase(arg, "--user")).input:
case (match = getCase(arg, "-u")).input:
userName = match[1];
break;
case (match = getCase(arg, "--password")).input:
case (match = getCase(arg, "-p")).input:
password = match[1];
break;
case (match = getCase(arg, "--branch")).input:
case (match = getCase(arg, "-b")).input:
branch = match[1];
break;
}
});
};
you could event take it further, and pass a list of option and handle the regex with |
I found this problem too. Because centos service depend on multi-user.target for none desktop Cenots 7.2. so I delete multi-user.target from my .service file. It had missed.