Just use the indexer and update directly:
dictionary["cat"] = 3
Assuming you want to show an Image thumbnail which is 50x50 pixels and link to the the actual image you can do
<a href="path/to/image.jpg" alt="Image description" target="_blank" style="display: inline-block; width: 50px; height; 50px; background-image: url('path/to/image.jpg');"></a>
Of course it's best to give that link a class or id and put it in your css
Synchronize the project and all will done in version 1.1.0
Adding to Tim's answer:
#search:placeholder-shown {
// show background image, I like svg
// when using svg, do not use HEX for colour; you can use rbg/a instead
// also notice the single quotes
background-image url('data:image/svg+xml; utf8, <svg>... <g fill="grey"...</svg>')
// other background props
}
#search:not(:placeholder-shown) { background-image: none;}
You need an HTML element for each column in your layout.
I’d suggest:
<div class="two-col">
<div class="col1">
<label for="field1">Field One:</label>
<input id="field1" name="field1" type="text">
</div>
<div class="col2">
<label for="field2">Field Two:</label>
<input id="field2" name="field2" type="text">
</div>
</div>
.two-col {
overflow: hidden;/* Makes this div contain its floats */
}
.two-col .col1,
.two-col .col2 {
width: 49%;
}
.two-col .col1 {
float: left;
}
.two-col .col2 {
float: right;
}
.two-col label {
display: block;
}
If you have a CSV file with single or even multiple columns, you can do these line by line "diff" operations using the sqlite3 embedded db. It comes with python, so should be available on most linux/macs. You can script the sqlite3 commands on the bash shell without needing to write python.
echo "
.mode csv
.import a.csv atable
.import b.csv btable
create table result as select * from atable EXCEPT select * from btable;
.output result.csv
select * from result ;
.quit
" | sqlite3 temp.db
Note : Ensure there is a newline for each of the sqlite3 commands.
How it works
If you need to operate on specific columns, sqlite3 or any db is the way to go.
I have tried diff'ing on multiple GB files using the builtin diff and comm tools. Sqlite beats linux utilities by a mile.
If you are using an in-memory collection as your filter, it's probably best to use the negation of Contains(). Note that this can fail if the list is too long, in which case you will need to choose another strategy (see below for using a strategy for a fully DB-oriented query).
var exceptionList = new List<string> { "exception1", "exception2" };
var query = myEntities.MyEntity
.Select(e => e.Name)
.Where(e => !exceptionList.Contains(e.Name));
If you're excluding based on another database query using Except
might be a better choice. (Here is a link to the supported Set extensions in LINQ to Entities)
var exceptionList = myEntities.MyOtherEntity
.Select(e => e.Name);
var query = myEntities.MyEntity
.Select(e => e.Name)
.Except(exceptionList);
This assumes a complex entity in which you are excluding certain ones depending some property of another table and want the names of the entities that are not excluded. If you wanted the entire entity, then you'd need to construct the exceptions as instances of the entity class such that they would satisfy the default equality operator (see docs).
Passing the :value
option to f.label
will ensure the label tag's for
attribute is the same as the id of the corresponding radio_button
<% form_for(@message) do |f| %>
<%= f.radio_button :contactmethod, 'email' %>
<%= f.label :contactmethod, 'Email', :value => 'email' %>
<%= f.radio_button :contactmethod, 'sms' %>
<%= f.label :contactmethod, 'SMS', :value => 'sms' %>
<% end %>
See ActionView::Helpers::FormHelper#label
the :value option, which is designed to target labels for radio_button tags
declare @sexo as char(1)
select @sexo='F'
select * from pessoa
where isnull(Sexo,0) =isnull(@Sexo,0)
This is how I implemented my URL builder. I have created one Service class to provide the params for the URL
public interface ParamsProvider {
String queryProvider(List<BasicNameValuePair> params);
String bodyProvider(List<BasicNameValuePair> params);
}
The Implementation of methods are below
@Component
public class ParamsProviderImp implements ParamsProvider {
@Override
public String queryProvider(List<BasicNameValuePair> params) {
StringBuilder query = new StringBuilder();
AtomicBoolean first = new AtomicBoolean(true);
params.forEach(basicNameValuePair -> {
if (first.get()) {
query.append("?");
query.append(basicNameValuePair.toString());
first.set(false);
} else {
query.append("&");
query.append(basicNameValuePair.toString());
}
});
return query.toString();
}
@Override
public String bodyProvider(List<BasicNameValuePair> params) {
StringBuilder body = new StringBuilder();
AtomicBoolean first = new AtomicBoolean(true);
params.forEach(basicNameValuePair -> {
if (first.get()) {
body.append(basicNameValuePair.toString());
first.set(false);
} else {
body.append("&");
body.append(basicNameValuePair.toString());
}
});
return body.toString();
}
}
When we need the query params for our URL, I simply call the service and build it. Example for that is below.
Class Mock{
@Autowired
ParamsProvider paramsProvider;
String url ="http://www.google.lk";
// For the query params price,type
List<BasicNameValuePair> queryParameters = new ArrayList<>();
queryParameters.add(new BasicNameValuePair("price", 100));
queryParameters.add(new BasicNameValuePair("type", "L"));
url = url+paramsProvider.queryProvider(queryParameters);
// You can use it in similar way to send the body params using the bodyProvider
}
Please Click on Gradle from Right side of Menu Then Click on :app Then Click android folder Then SigningReport file name is exist there Double click on that. It Will start executing and in a while it will show you SHA-1 Code Just copy the code. And paste it where you need it
Another way that is never talked about is Create a view in MSSQL with all the data you want to present. Then use LINQ to SQL or whatever to map it. In your controller return it to the view. Done.
.... group by to_char(date, 'YYYY')
--> 1989
.... group by to_char(date,'MM')
-->05
.... group by to_char(date,'DD')
--->23
.... group by to_char(date,'MON')
--->MAY
.... group by to_char(date,'YY')
--->89
It will be better for you to write your code like this.
In your Controller Write this code.
function new_blank_order_summary() {
$query = $this->sales_model->order_summary_insert();
if($query) {
$this->load->view('sales/new_blank_order_summary');
} else {
$this->load->view('sales/data_insertion_failed');
}
}
and in your Model
function order_summary_insert() {
$orderLines = trim(xss_clean($this->input->post('orderlines')));
$customerName = trim(xss_clean($this->input->post('customer')));
$data = array(
'OrderLines'=>$orderLines,
'CustomerName'=>$customerName
);
$this->db->insert('Customer_Orders',$data);
return ($this->db->affected_rows() != 1) ? false : true;
}
So long as your text-editors can cope with Unicode (presumably encoded in UTF-8) you can enter the Unicode code-point directly.
For instance, in the Vim text-editor you would enter insert mode and press Ctrl + V + U and then the code-point number as a 4-digit hexadecimal number (pad with zeros if necessary). So you would type Ctrl + V + U 2 6 2 0. See: What is the easiest way to insert Unicode characters into a document?
At a terminal running Bash you would type CTRL+SHIFT+U and type in the hexadecimal code-point of the character you want. During input your cursor should show an underlined u
. The first non-digit you type ends input, and renders the character. So you could be able to print U+2620 in Bash using the following:
echo CTRL+SHIFT+U2620ENTERENTER
(The first enter ends Unicode input, and the second runs the echo
command.)
Credit: Ask Ubuntu SE
Beyond historical (good and already reported) reasons, there's is also a little problem with operators precedence: dot operator has higher priority than star operator, so if you have struct containing pointer to struct containing pointer to struct... These two are equivalent:
(*(*(*a).b).c).d
a->b->c->d
But the second is clearly more readable. Arrow operator has the highest priority (just as dot) and associates left to right. I think this is clearer than use dot operator both for pointers to struct and struct, because we know the type from the expression without have to look at the declaration, that could even be in another file.
If a value in YAML begins with a curly brace ({
), the YAML parser assumes that it is a dictionary. So, for cases like this where there is a (Jinja2) variable in the value, one of the following two strategies needs to be adopted to avoiding confusing the YAML parser:
Quote the whole command:
- command: "{{ item }} chdir=/src/package/"
with_items:
- ./configure
- /usr/bin/make
- /usr/bin/make install
or change the order of the arguments:
- command: chdir=/src/package/ {{ item }}
with_items:
- ./configure
- /usr/bin/make
- /usr/bin/make install
Thanks for @RamondelaFuente alternative suggestion.
For testing simple objects, use:
if (obj[x] !== undefined)
If you don't know what object type it is, use:
if (obj.hasOwnProperty(x))
All other options are slower...
A performance evaluation of 100,000,000 cycles under Node.js to the five options suggested by others here:
function hasKey1(k,o) { return (x in obj); }
function hasKey2(k,o) { return (obj[x]); }
function hasKey3(k,o) { return (obj[x] !== undefined); }
function hasKey4(k,o) { return (typeof(obj[x]) !== 'undefined'); }
function hasKey5(k,o) { return (obj.hasOwnProperty(x)); }
The evaluation tells us that unless we specifically want to check the object's prototype chain as well as the object itself, we should not use the common form:
if (X in Obj)...
It is between 2 to 6 times slower depending on the use case
hasKey1 execution time: 4.51 s
hasKey2 execution time: 0.90 s
hasKey3 execution time: 0.76 s
hasKey4 execution time: 0.93 s
hasKey5 execution time: 2.15 s
Bottom line, if your Obj is not necessarily a simple object and you wish to avoid checking the object's prototype chain and to ensure x is owned by Obj directly, use if (obj.hasOwnProperty(x))...
.
Otherwise, when using a simple object and not being worried about the object's prototype chain, using if (typeof(obj[x]) !== 'undefined')...
is the safest and fastest way.
If you use a simple object as a hash table and never do anything kinky, I would use if (obj[x])...
as I find it much more readable.
A view is a virtual table. A view consists of rows and columns just like a table. The difference between a view and a table is that views are definitions built on top of other tables (or views), and do not hold data themselves. If data is changing in the underlying table, the same change is reflected in the view. A view can be built on top of a single table or multiple tables. It can also be built on top of another view. In the SQL Create View page, we will see how a view can be built.
Views offer the following advantages:
Ease of use: A view hides the complexity of the database tables from end users. Essentially we can think of views as a layer of abstraction on top of the database tables.
Space savings: Views takes very little space to store, since they do not store actual data.
Additional data security: Views can include only certain columns in the table so that only the non-sensitive columns are included and exposed to the end user. In addition, some databases allow views to have different security settings, thus hiding sensitive data from prying eyes.
Answer from:http://www.1keydata.com/sql/sql-view.html
You can add the command in the /etc/rc.local
script that is executed at the end of startup.
Write the command before exit 0
. Anything written after exit 0
will never be executed.
The prefix "Local" in JSR-310 (aka java.time-package in Java-8) does not indicate that there is a timezone information in internal state of that class (here: LocalDateTime
). Despite the often misleading name such classes like LocalDateTime
or LocalTime
have NO timezone information or offset.
You tried to format such a temporal type (which does not contain any offset) with offset information (indicated by pattern symbol Z). So the formatter tries to access an unavailable information and has to throw the exception you observed.
Solution:
Use a type which has such an offset or timezone information. In JSR-310 this is either OffsetDateTime
(which contains an offset but not a timezone including DST-rules) or ZonedDateTime
. You can watch out all supported fields of such a type by look-up on the method isSupported(TemporalField).. The field OffsetSeconds
is supported in OffsetDateTime
and ZonedDateTime
, but not in LocalDateTime
.
DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyyMMdd HH:mm:ss.SSSSSS Z");
String s = ZonedDateTime.now().format(formatter);
I do it a little different, and wrote an extra detector class that implements the View.onTouchListener
onCreate
is simply add it to the lowest layout like this:
ActivitySwipeDetector activitySwipeDetector = new ActivitySwipeDetector(this);
lowestLayout = (RelativeLayout)this.findViewById(R.id.lowestLayout);
lowestLayout.setOnTouchListener(activitySwipeDetector);
where id.lowestLayout is the id.xxx for the view lowest in the layout hierarchy and lowestLayout is declared as a RelativeLayout
And then there is the actual activity swipe detector class:
public class ActivitySwipeDetector implements View.OnTouchListener {
static final String logTag = "ActivitySwipeDetector";
private Activity activity;
static final int MIN_DISTANCE = 100;
private float downX, downY, upX, upY;
public ActivitySwipeDetector(Activity activity){
this.activity = activity;
}
public void onRightSwipe(){
Log.i(logTag, "RightToLeftSwipe!");
activity.doSomething();
}
public void onLeftSwipe(){
Log.i(logTag, "LeftToRightSwipe!");
activity.doSomething();
}
public void onDownSwipe(){
Log.i(logTag, "onTopToBottomSwipe!");
activity.doSomething();
}
public void onUpSwipe(){
Log.i(logTag, "onBottomToTopSwipe!");
activity.doSomething();
}
public boolean onTouch(View v, MotionEvent event) {
switch(event.getAction()){
case MotionEvent.ACTION_DOWN: {
downX = event.getX();
downY = event.getY();
return true;
}
case MotionEvent.ACTION_UP: {
upX = event.getX();
upY = event.getY();
float deltaX = downX - upX;
float deltaY = downY - upY;
// swipe horizontal?
if(Math.abs(deltaX) > Math.abs(deltaY))
{
if(Math.abs(deltaX) > MIN_DISTANCE){
// left or right
if(deltaX > 0) { this.onRightSwipe(); return true; }
if(deltaX < 0) { this.onLeftSwipe(); return true; }
}
else {
Log.i(logTag, "Horizontal Swipe was only " + Math.abs(deltaX) + " long, need at least " + MIN_DISTANCE);
return false; // We don't consume the event
}
}
// swipe vertical?
else
{
if(Math.abs(deltaY) > MIN_DISTANCE){
// top or down
if(deltaY < 0) { this.onDownSwipe(); return true; }
if(deltaY > 0) { this.onUpSwipe(); return true; }
}
else {
Log.i(logTag, "Vertical Swipe was only " + Math.abs(deltaX) + " long, need at least " + MIN_DISTANCE);
return false; // We don't consume the event
}
}
return true;
}
}
return false;
}
}
Works really good for me!
I have got that error after update to JDK 1.8. But the JAVA_HOME
variable was hard coded furthermore to JDK 1.7. Thew modification solved the problem:
set JAVA_HOME=C:\Program Files\Java\jdk1.8.0_241
static String[] AlphabetWithDigits = {"0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z", "a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z"};
For me, this one worked without the sudo access.
ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
For more reference, please follow https://gist.github.com/mxcl/323731
Actually, you can always test it by yourself.
CREATE TABLE CUSTOMERS
(
CUSTOMER_ID NUMBER NOT NULL,
JOIN_DATE DATE NOT NULL,
CUSTOMER_STATUS VARCHAR2(8) NOT NULL,
CUSTOMER_NAME VARCHAR2(20) NOT NULL,
CREDITRATING VARCHAR2(10)
)
;
select column_name, data_type, nullable, data_length, data_precision, data_scale from user_tab_columns where table_name ='CUSTOMERS';
...which seems to be the intended and most portable way
the concept of python urllib is to group the numerous attributes of the request into various managers/directors/contexts... which then process their parts:
import urllib.request, ssl
# to avoid verifying ssl certificates
httpsHa = urllib.request.HTTPSHandler(context= ssl._create_unverified_context())
# setting up realm+urls+user-password auth
# (top_level_url may be sequence, also the complete url, realm None is default)
top_level_url = 'https://ip:port_or_domain'
# of the std managers, this can send user+passwd in one go,
# not after HTTP req->401 sequence
password_mgr = urllib.request.HTTPPasswordMgrWithPriorAuth()
password_mgr.add_password(None, top_level_url, "user", "password", is_authenticated=True)
handler = urllib.request.HTTPBasicAuthHandler(password_mgr)
# create OpenerDirector
opener = urllib.request.build_opener(handler, httpsHa)
url = top_level_url + '/some_url?some_query...'
response = opener.open(url)
print(response.read())
It is worth to mention how to remove the extension also in parallel with getting the extension:
var name = Path.GetFileNameWithoutExtension(fileFullName); // Get the name only
var extension = Path.GetExtension(fileFullName); // Get the extension only
For myself, I'd start with dumping both databases and diffing the dumps, but if you want automatically generated merge scripts, you're going to want to get a real tool.
A simple Google search turned up the following tools:
There are two ways to handle CGI scripts, SetHandler
and AddHandler
.
SetHandler cgi-script
applies to all files in a given context, no matter how they are named, even index.html
or style.css
.
AddHandler cgi-script .pl
is similar, but applies to files ending in .pl
, in a given context. You may choose another extension or several, if you like.
Additionally, the CGI module must be loaded and Options +ExecCGI
configured. To activate the module, issue
a2enmod cgi
and restart or reload Apache. Finally, the Perl CGI script must be executable. So the execute bits must be set
chmod a+x script.pl
and it should start with
#! /usr/bin/perl
as its first line.
When you use SetHandler
or AddHandler
(and Options +ExecCGI
) outside of any directive, it is applied globally to all files. But you may restrict the context to a subset by enclosing these directives inside, e.g. Directory
<Directory /path/to/some/cgi-dir>
SetHandler cgi-script
Options +ExecCGI
</Directory>
Now SetHandler
applies only to the files inside /path/to/some/cgi-dir instead of all files of the web site. Same is with AddHandler
inside a Directory
or Location
directive, of course. It then applies to the files inside /path/to/some/cgi-dir, ending in .pl
.
Use "target" attribute and remove the 'compiler' attribute. See here. So it should go something like this:
<target name="compile">
<javac target="1.5" srcdir=.../>
</target>
Hope this helps
I've done it like so:
((ViewManager)entry.getParent()).removeView(entry);
Use the createFromFormat
method:
$start_date = DateTime::createFromFormat("U", $dbResult->db_timestamp);
UPDATE
I now recommend the use of Carbon
If the value of a disabled textbox needs to be retained when a form is cleared (reset), disabled = "disabled"
has to be used, as read-only textbox will not retain the value
For Example:
HTML
Textbox
<input type="text" id="disabledText" name="randombox" value="demo" disabled="disabled" />
Reset button
<button type="reset" id="clearButton">Clear</button>
In the above example, when Clear button is pressed, disabled text value will be retained in the form. Value will not be retained in the case of input type = "text" readonly="readonly"
You can convert a string to a DATE using the TO_DATE function, then reformat the date as another string using TO_CHAR, i.e.:
SELECT TO_CHAR(
TO_DATE('15/August/2009,4:30 PM'
,'DD/Month/YYYY,HH:MI AM')
,'DD-MM-YYYY')
FROM DUAL;
15-08-2009
For example, if your table name is MYTABLE and the varchar2 column is MYDATESTRING:
SELECT TO_CHAR(
TO_DATE(MYDATESTRING
,'DD/Month/YYYY,HH:MI AM')
,'DD-MM-YYYY')
FROM MYTABLE;
gcc main.cpp -o main.out
./main.out
Changed in Python 3.5: Support for recursive globs using “**”.
glob.glob()
got a new recursive parameter.
If you want to get every .txt
file under my_path
(recursively including subdirs):
import glob
files = glob.glob(my_path + '/**/*.txt', recursive=True)
# my_path/ the dir
# **/ every file and dir under my_path
# *.txt every file that ends with '.txt'
If you need an iterator you can use iglob as an alternative:
for file in glob.iglob(my_path, recursive=False):
# ...
open redis configuration file
sudo nano /etc/redis/redis.conf
set passphrase
replace
# requirepass foobared
with
requirepass YOURPASSPHRASE
restart redis
redis-server restart
git pull
is really equivalent to running git fetch
and then git merge
. The git fetch
updates your so-called "remote-tracking branches" - typically these are ones that look like origin/master
, github/experiment
, etc. that you see with git branch -r
. These are like a cache of the state of branches in the remote repository that are updated when you do git fetch
(or a successful git push
).
So, suppose you've got a remote called origin
that refers to your GitHub repository, you would do:
git fetch origin
... and then do:
git diff master origin/master
... in order to see the difference between your master
, and the one on GitHub. If you're happy with those differences, you can merge them in with git merge origin/master
, assuming master
is your current branch.
Personally, I think that doing git fetch
and git merge
separately is generally a good idea.
In order to generate key hash you need to follow some easy steps.
1) Download Openssl from: here.
2) Make a openssl folder in C drive
3) Extract Zip files into this openssl folder created in C Drive.
4) Copy the File debug.keystore from .android folder in my case (C:\Users\SYSTEM.android) and paste into JDK bin Folder in my case (C:\Program Files\Java\jdk1.6.0_05\bin)
5) Open command prompt and give the path of JDK Bin folder in my case (C:\Program Files\Java\jdk1.6.0_05\bin).
6) Copy the following code and hit enter
keytool -exportcert -alias androiddebugkey -keystore debug.keystore > c:\openssl\bin\debug.txt
7) Now you need to enter password, Password = android.
8) If you see in openssl Bin folder, you will get a file with the name of debug.txt
9) Now either you can restart command prompt or work with existing command prompt
10) get back to C drive and give the path of openssl Bin folder
11) copy the following code and paste
openssl sha1 -binary debug.txt > debug_sha.txt
12) you will get debug_sha.txt in openssl bin folder
13) Again copy following code and paste
openssl base64 -in debug_sha.txt > debug_base64.txt
14) you will get debug_base64.txt in openssl bin folder
15) open debug_base64.txt file Here is your Key hash.
The reset_index() is a pandas DataFrame method that will transfer index values into the DataFrame as columns. The default setting for the parameter is drop=False (which will keep the index values as columns).
All you have to do add .reset_index(inplace=True)
after the name of the DataFrame:
df.reset_index(inplace=True)
JavaScript variable = PHP variable try follow:-
<script>
var a="Hello";
<?php
$variable='a';
?>
</script>
Note:-It run only when you do php code under script tag.I have a successfully initialise php variable.
Alciende's answer didn't quite work for me in Safari for whatever reason just now, but did after a minor modification:
function textAreaAdjust(o) {
o.style.height = "1px";
setTimeout(function() {
o.style.height = (o.scrollHeight)+"px";
}, 1);
}
Hope this helps someone
This will loop through all cells in a given range that you define ("RANGE TO SEARCH")
and add dashes at the cell below using the Offset()
method. As a best practice in VBA, you should never use the Select
method.
Sub AddDashes()
Dim SrchRng As Range, cel As Range
Set SrchRng = Range("RANGE TO SEARCH")
For Each cel In SrchRng
If InStr(1, cel.Value, "TOTAL") > 0 Then
cel.Offset(1, 0).Value = "-"
End If
Next cel
End Sub
you could read and write to a seperately like others. But if you want to write into the same one, you could try with this:
#include <iostream>
#include <fstream>
using namespace std;
int main() {
double data[size of your data];
std::ifstream input("file.txt");
for (int i = 0; i < size of your data; i++) {
input >> data[i];
std::cout<< data[i]<<std::endl;
}
}
Classpath is an environment variable of system. The setting of this variable is used to provide the root of any package hierarchy to java compiler.
I try 2 option:
yourContext.Entry(yourEntity).Reload();
When loading the Properties from a Class in the package com.al.common.email.templates
you can use
Properties prop = new Properties();
InputStream in = getClass().getResourceAsStream("foo.properties");
prop.load(in);
in.close();
(Add all the necessary exception handling).
If your class is not in that package, you need to aquire the InputStream slightly differently:
InputStream in =
getClass().getResourceAsStream("/com/al/common/email/templates/foo.properties");
Relative paths (those without a leading '/') in getResource()
/getResourceAsStream()
mean that the resource will be searched relative to the directory which represents the package the class is in.
Using java.lang.String.class.getResource("foo.txt")
would search for the (inexistent) file /java/lang/String/foo.txt
on the classpath.
Using an absolute path (one that starts with '/') means that the current package is ignored.
Working with Eclipse can be difficult at times, probably when debugging and designing layouts Eclipse sometimes get stuck and we have to restart Eclipse from time to time. Also you get problems with emulators.
Android studio was released very recently and this IDE is not yet heavily used by developers. Therefore, it may contain certain bugs.
This describes the difference between android android studio and eclipse project structure: Android Studio Project Structure (v.s. Eclipse Project Structure)
This teaches you how to use the android studio: http://www.infinum.co/the-capsized-eight/articles/android-studio-vs-eclipse-1-0
While there are plenty of excellent Answers here, I'd like to present my own table describing the various Map
implementations bundled with Java 11.
We can see these differences listed on the table graphic:
HashMap
is the general-purpose Map
commonly used when you have no special needs.LinkedHashMap
extends HashMap
, adding this behavior: Maintains an order, the order in which the entries were originally added. Altering the value for key-value entry does not alter its place in the order.TreeMap
too maintains an order, but uses either (a) the “natural” order, meaning the value of the compareTo
method on the key objects defined on the Comparable
interface, or (b) invokes a Comparator
implementation you provide.
TreeMap
implements both the SortedMap
interface, and its successor, the NavigableMap
interface.TreeMap
does not allow a NULL as the key, while HashMap
& LinkedHashMap
do.
HashTable
is legacy, from Java 1. Supplanted by the ConcurrentHashMap
class. Quoting the Javadoc: ConcurrentHashMap
obeys the same functional specification as Hashtable
, and includes versions of methods corresponding to each method of Hashtable
.You are getting that error because an application with a package name same as your application already exists. If you are sure that you have not installed the same application before, change the package name and try.
Else wise, here is what you can do:
of course it depends on how you implement it but perhaps this is a good start:
using System.Windows.Forms;
public class AutoCompleteTextBox : TextBox {
private string[] database;//put here the strings of the candidates of autocomplete
private bool changingText = false;
protected override void OnTextChanged (EventArgs e) {
if(!changingText && database != null) {
//searching the first candidate
string typed = this.Text.Substring(0,this.SelectionStart);
string candidate = null;
for(int i = 0; i < database.Length; i++)
if(database[i].Substring(0,this.SelectionStart) == typed) {
candidate = database[i].Substring(this.SelectionStart,database[i].Length);
break;
}
if(candidate != null) {
changingText = true;
this.Text = typed+candidate;
this.SelectionStart = typed.Length;
this.SelectionLength = candidate.Length;
}
}
else if(changingText)
changingText = false;
base.OnTextChanged(e);
}
}
I'm not sure this is working very well, but I think the base of this code is good enough.
is this what you want?
var grouped = CustomerList.GroupBy(m => m.GroupID).Select((n) => new { GroupId = n.Key, Items = n.ToList() });
I managed to find the correct one. It is below.
bool val1 = System.Web.HttpContext.Current.User.Identity.IsAuthenticated
EDIT
The credit of this edit goes to @Gianpiero Caretti who suggested this in comment.
bool val1 = (System.Web.HttpContext.Current.User != null) && System.Web.HttpContext.Current.User.Identity.IsAuthenticated
Just add the cloaking CSS to the head of the page or to one of your CSS files:
[ng\:cloak], [ng-cloak], [data-ng-cloak], [x-ng-cloak], .ng-cloak, .x-ng-cloak, .ng-hide {
display: none !important;
}
Then you can use the ngCloak directive according to normal Angular practice, and it will work even before Angular itself is loaded.
This is exactly what Angular does: the code at the end of angular.js adds the above CSS rules to the head of the page.
INSTALL_FAILED_NO_MATCHING_ABIS is when you are trying to install an app that has native libraries and it doesn't have a native library for your cpu architecture. For example if you compiled an app for armv7 and are trying to install it on an emulator that uses the Intel architecture instead it will not work.
Using Xamarin on Visual Studio 2015. Fix this issue by:
Under "Supported architectures" make the following checked:
save
Edit: This solution has been reported as working on Visual Studio 2017 as well.
Edit 2: This solution has been reported as working on Visual Studio 2017 for Mac as well.
In case, you would like to collect bitstamp trade data form their websocket in higher resolution over longer time period you could use script log_bitstamp_trades.py below.
The script uses python websocket-client and pusher_client_python libraries, so install them.
#!/usr/bin/python
import pusherclient
import time
import logging
import sys
import datetime
import signal
import os
logging.basicConfig()
log_file_fd = None
def sigint_and_sigterm_handler(signal, frame):
global log_file_fd
log_file_fd.close()
sys.exit(0)
class BitstampLogger:
def __init__(self, log_file_path, log_file_reload_path, pusher_key, channel, event):
self.channel = channel
self.event = event
self.log_file_fd = open(log_file_path, "a")
self.log_file_reload_path = log_file_reload_path
self.pusher = pusherclient.Pusher(pusher_key)
self.pusher.connection.logger.setLevel(logging.WARNING)
self.pusher.connection.bind('pusher:connection_established', self.connect_handler)
self.pusher.connect()
def callback(self, data):
utc_timestamp = time.mktime(datetime.datetime.utcnow().timetuple())
line = str(utc_timestamp) + " " + data + "\n"
if os.path.exists(self.log_file_reload_path):
os.remove(self.log_file_reload_path)
self.log_file_fd.close()
self.log_file_fd = open(log_file_path, "a")
self.log_file_fd.write(line)
def connect_handler(self, data):
channel = self.pusher.subscribe(self.channel)
channel.bind(self.event, self.callback)
def main(log_file_path, log_file_reload_path):
global log_file_fd
bitstamp_logger = BitstampLogger(
log_file_path,
log_file_reload_path,
"de504dc5763aeef9ff52",
"live_trades",
"trade")
log_file_fd = bitstamp_logger.log_file_fd
signal.signal(signal.SIGINT, sigint_and_sigterm_handler)
signal.signal(signal.SIGTERM, sigint_and_sigterm_handler)
while True:
time.sleep(1)
if __name__ == '__main__':
log_file_path = sys.argv[1]
log_file_reload_path = sys.argv[2]
main(log_file_path, log_file_reload_path
and logrotate file config
/mnt/data/bitstamp_logs/bitstamp-trade.log
{
rotate 10000000000
minsize 10M
copytruncate
missingok
compress
postrotate
touch /mnt/data/bitstamp_logs/reload_log > /dev/null
endscript
}
then you can run it on background
nohup ./log_bitstamp_trades.py /mnt/data/bitstamp_logs/bitstamp-trade.log /mnt/data/bitstamp_logs/reload_log &
found = False
def check():
datafile = file('example.txt')
for line in datafile:
if "blabla" in line:
found = True
break
return found
if check():
print "found"
else:
print "not found"
use fixed table layout css in table, and set a percent of the td.
I ran into the same issue on centos7. Removing php-mysql and installing php-mysqlnd fixed the problem. Thanks Carlos Buenosvinos Zamora for your suggestion.
Here are my commands on centos7 just in case this can be of help to anybody as most of the answers here are based on Debian/Ubuntu.
To find the installed php-mysql package
yum list installed | grep mysql
To remove the installed php-mysql package
yum remove php55w-mysql.x86_64
To install php-mysqlnd
yum install php-mysqlnd.x86_64
Historically, Bourne shells didn't have true
and false
as built-in commands. true
was instead simply aliased to :
, and false
to something like let 0
.
:
is slightly better than true
for portability to ancient Bourne-derived shells. As a simple example, consider having neither the !
pipeline operator nor the ||
list operator (as was the case for some ancient Bourne shells). This leaves the else
clause of the if
statement as the only means for branching based on exit status:
if command; then :; else ...; fi
Since if
requires a non-empty then
clause and comments don't count as non-empty, :
serves as a no-op.
Nowadays (that is: in a modern context) you can usually use either :
or true
. Both are specified by POSIX, and some find true
easier to read. However there is one interesting difference: :
is a so-called POSIX special built-in, whereas true
is a regular built-in.
Special built-ins are required to be built into the shell; Regular built-ins are only "typically" built in, but it isn't strictly guaranteed. There usually shouldn't be a regular program named :
with the function of true
in PATH of most systems.
Probably the most crucial difference is that with special built-ins, any variable set by the built-in - even in the environment during simple command evaluation - persists after the command completes, as demonstrated here using ksh93:
$ unset x; ( x=hi :; echo "$x" )
hi
$ ( x=hi true; echo "$x" )
$
Note that Zsh ignores this requirement, as does GNU Bash except when operating in POSIX compatibility mode, but all other major "POSIX sh derived" shells observe this including dash, ksh93, and mksh.
Another difference is that regular built-ins must be compatible with exec
- demonstrated here using Bash:
$ ( exec : )
-bash: exec: :: not found
$ ( exec true )
$
POSIX also explicitly notes that :
may be faster than true
, though this is of course an implementation-specific detail.
If you want to install requests directly you can use the "-m" (module) option available to python.
python.exe -m pip install requests
You can do this directly in PowerShell, though you may need to use the full python path (eg. C:\Python27\python.exe
) instead of just python.exe
.
As mentioned in the comments, if you have added Python to your path you can simply do:
python -m pip install requests
Just use Val()
:
currentLoad = Int(Val([f4]))
Now currentLoad
has a integer value, zero if [f4]
is not numeric.
The reverse() is used to adhere the django DRY principle i.e if you change the url in future then you can reference that url using reverse(urlname).
According to http://api.jquery.com/jquery.ajax/
$.ajax({
method: "POST",
url: "some.php",
data: { name: "John", location: "Boston" }
})
.done(function( msg ) {
alert( "Data Saved: " + msg );
});
I came across the same issue, and it worked after running commands below.
export JAVA_LIBS="$JAVA_LIBS -ldl"
R CMD javareconf
See details at http://www-01.ibm.com/support/knowledgecenter/SSPT3X_3.0.0/com.ibm.swg.im.infosphere.biginsights.install.doc/doc/install_install_r.html
Easy approach:
CREATE TABLE T
(
C [nvarchar](100) NOT NULL UNIQUE,
);
SET XACT_ABORT ON -- Turns on rollback if T-SQL statement raises a run-time error.
SELECT * FROM T; -- Check before.
BEGIN TRAN
INSERT INTO T VALUES ('A');
INSERT INTO T VALUES ('B');
INSERT INTO T VALUES ('B');
INSERT INTO T VALUES ('C');
COMMIT TRAN
SELECT * FROM T; -- Check after.
DELETE T;
As of right now ES6 import, export is always compiled to CommonJS, so there is no benefit using one or other. Although usage of ES6 is recommended since it should be advantageous when native support from browsers released. The reason being, you can import partials from one file while with CommonJS you have to require all of the file.
ES6 → import, export default, export
CommonJS → require, module.exports, exports.foo
Below is common usage of those.
ES6 export default
// hello.js
function hello() {
return 'hello'
}
export default hello
// app.js
import hello from './hello'
hello() // returns hello
ES6 export multiple and import multiple
// hello.js
function hello1() {
return 'hello1'
}
function hello2() {
return 'hello2'
}
export { hello1, hello2 }
// app.js
import { hello1, hello2 } from './hello'
hello1() // returns hello1
hello2() // returns hello2
CommonJS module.exports
// hello.js
function hello() {
return 'hello'
}
module.exports = hello
// app.js
const hello = require('./hello')
hello() // returns hello
CommonJS module.exports multiple
// hello.js
function hello1() {
return 'hello1'
}
function hello2() {
return 'hello2'
}
module.exports = {
hello1,
hello2
}
// app.js
const hello = require('./hello')
hello.hello1() // returns hello1
hello.hello2() // returns hello2
Appsamuck iPhone tutorials is aiming for 31 days of tutorials ending in 31 small apps developed for the iPhone all the source code for which is available to download. They also provide a commercial service to build apps!
If you want to know if you can do the coding, well at least you can download the code and see if anything there is helpful for your needs. On the flip side you can also get a quote from them for developing the app for you, so you can try both sides of the coin, outsource and in-house. Of course it all depends on how much time you have too! It's certainly worth a look!
(OK, after my last disastrous attempt to try and post a useful piece of help, I went off hunting around!)
It says “Android library projects cannot be launched” because Android library projects cannot be launched. That simple. You cannot run a library. If you want to test a library, create an Android project that uses the library, and execute it.
You can use form.get to get the specific control object and use setValue
this.form.get(<formControlName>).setValue(<newValue>);
Well, those features are specific to a tool that you are using for development in those languages.
You wouldn't have those tools if (for example) you were using notepad to write code. So, maybe you should ask the question for the tool you are using.
For PHP: http://webservices.xml.com/pub/a/ws/2004/03/24/phpws.html
You are on the right track.
On your header set
Content-Type: application/x-www-form-urlencoded
The body of the POST request should be =test
and nothing else. For unknown/variable strings you have to URL encode the value so that way you do not accidentally escape with an input character.
See also POST string to ASP.NET Web Api application - returns null
Though this question is rather old, here's a answer :)
What you are asking for can be achieved by using jQuery's .click() event method and .on() event method
So this could be the code:
// Set the global variables
var userImage = $("#img-giLkojRpuK");
var hangoutButton = $("#hangout-giLkojRpuK");
$(document).ready(function() {
// When the document is ready/loaded, execute function
// Hide hangoutButton
hangoutButton.hide();
// Assign "click"-event-method to userImage
userImage.on("click", function() {
console.log("in onclick");
hangoutButton.click();
});
});
There is an application for both Mac & Windows call Handbrake, i know this isn't command line stuff but for a quick open file - select output file format & rough output size whilst keeping most of the good stuff about the video then this is good, it's a just a graphical view of ffmpeg at its best ... It does support command line input for those die hard texters.. https://handbrake.fr/downloads.php
Something else you could do using raytrace's answer. You could use the stdout of another shell call using backticks to then do some calculations. For instance I wanted to know the file size of the top 100 lines from a couple of files. The original size from wc -c
is in bytes, I want to know kilobytes. Here's what I did:
echo `cat * | head -n 100 | wc -c` / 1024 | bc -l
I assume you know how to get the DOM object for the <a>
element (use document.getElementById
or some other method).
To add any attribute, just use the setAttribute method on the DOM object:
a = document.getElementById(...);
a.setAttribute("href", "somelink url");
// check if ch is a letter
if ((ch >= 'a' && ch <= 'z') || (ch >= 'A' && ch <= 'Z'))
// ...
// check if ch is a digit
if (ch >= '0' && ch <= '9')
// ...
// check if ch is a whitespace
if ((ch == ' ') || (ch =='\n') || (ch == '\t'))
// ...
Source: https://docs.oracle.com/javase/tutorial/i18n/text/charintro.html
Please check if your code doesnt consist of two module projects that have the same classes names and packages definition. For example this could happen if someone uses copy-paste to create new implementation of interface based on previous implementation.
You can use JSON.parse, adding brakets to format Array
const a = "1,2,3,4";
const myArray = JSON.parse(`[${a}]`)
console.log(myArray)
console.info('pos 2 = ', myArray[2])
_x000D_
Use the following code:
System.out.println("\f");
'\f' is an escape sequence which represents FormFeed. This is what I have used in my projects to clear the console. This is simpler than the other codes, I guess.
You're asking a question about numeric comparisons, so regular expressions really have nothing to do with the issue. You don't need "multiple if
" statements to do it, either:
if (x >= 0.001 && x <= 0.009) {
// something
}
You could write yourself a "between()" function:
function between(x, min, max) {
return x >= min && x <= max;
}
// ...
if (between(x, 0.001, 0.009)) {
// something
}
Instead of changing the default table-hover class, make a new class ( anotherhover ) and apply it to the table that you need this effect for.
Code as below;
.anotherhover tbody tr:hover td { background: CornflowerBlue; }
Not sure if this solution has been mentioned anywhere yet but one way to do is is pandas.Index.difference
.
>>> df = pd.DataFrame(columns=['A','B','C','D'])
>>> df
Empty DataFrame
Columns: [A, B, C, D]
Index: []
>>> to_remove = ['A','C']
>>> df = df[df.columns.difference(to_remove)]
>>> df
Empty DataFrame
Columns: [B, D]
Index: []
$(".thumbs").hover(
function(){
if (!$(this).hasClass("selected")) {
$(this).stop().fadeTo("normal", 1.0);
}
},
function(){
if (!$(this).hasClass("selected")) {
$(this).stop().fadeTo("slow", 0.3);
}
}
);
Putting an if inside of each part of the hover will allow you to change the select class dynamically and the hover will still work.
$(".thumbs").click(function() {
$(".thumbs").each(function () {
if ($(this).hasClass("selected")) {
$(this).removeClass("selected");
$(this).hover();
}
});
$(this).addClass("selected");
});
As an example I've also attached a click handler to switch the selected class to the clicked item. Then I fire the hover event on the previous item to make it fade out.
In MySQL there is a group_concat function that will return what you're asking for.
SELECT TableA.ID, TableA.Name, group_concat(TableB.SomeColumn)
as SomColumnGroup FROM TableA LEFT JOIN TableB ON
TableB.TableA_ID = TableA.ID
Well, you can use default
branch to detect it, for a closed channel will be selected, for example: the following code will select default
, channel
, channel
, the first select is not blocked.
func main() {
ch := make(chan int)
go func() {
select {
case <-ch:
log.Printf("1.channel")
default:
log.Printf("1.default")
}
select {
case <-ch:
log.Printf("2.channel")
}
close(ch)
select {
case <-ch:
log.Printf("3.channel")
default:
log.Printf("3.default")
}
}()
time.Sleep(time.Second)
ch <- 1
time.Sleep(time.Second)
}
Prints
2018/05/24 08:00:00 1.default
2018/05/24 08:00:01 2.channel
2018/05/24 08:00:01 3.channel
With FluidXML you can generate your XML very easly.
$tracks = fluidxml('xml');
$tracks->times(8, function ($i) {
$this->add([
'track' => [
'path' => "song{$i}.mp3",
'title' => "Track {$i} - Track Title"
]
]);
});
I've written the tests that compare using regular expressions (as per other answers) against not using regular expressions. Tests done on a quad core OSX10.8 machine running Java 1.6
Interestingly using regular expressions turns out to be about 5-10 times slower than manually iterating over a string. Furthermore the isAlphanumeric2()
function is marginally faster than isAlphanumeric()
. One supports the case where extended Unicode numbers are allowed, and the other is for when only standard ASCII numbers are allowed.
public class QuickTest extends TestCase {
private final int reps = 1000000;
public void testRegexp() {
for(int i = 0; i < reps; i++)
("ab4r3rgf"+i).matches("[a-zA-Z0-9]");
}
public void testIsAlphanumeric() {
for(int i = 0; i < reps; i++)
isAlphanumeric("ab4r3rgf"+i);
}
public void testIsAlphanumeric2() {
for(int i = 0; i < reps; i++)
isAlphanumeric2("ab4r3rgf"+i);
}
public boolean isAlphanumeric(String str) {
for (int i=0; i<str.length(); i++) {
char c = str.charAt(i);
if (!Character.isLetterOrDigit(c))
return false;
}
return true;
}
public boolean isAlphanumeric2(String str) {
for (int i=0; i<str.length(); i++) {
char c = str.charAt(i);
if (c < 0x30 || (c >= 0x3a && c <= 0x40) || (c > 0x5a && c <= 0x60) || c > 0x7a)
return false;
}
return true;
}
}
You mean the tellItLikeItIs
method? Yes, you have to specify void
to specify that the method doesn't return anything. All methods have to have a return type specified, even if it's void
.
It certainly doesn't return a string - look, there are no return statements anywhere. It's not really clear why you think it is returning a string. It's printing strings to the console, but that's not the same thing as returning one from the method.
Check if it is glyphicons-halflings-regular.woff
and not glyphiconshalflings-regular.woff
If you're talking about PL/SQL, you should put it in an anonymous block.
DECLARE
v_text VARCHAR2(10); -- declare
BEGIN
v_text := 'Hello'; --assign
dbms_output.Put_line(v_text); --display
END;
Right_click on the drawable and create new layout xml file in the name of for example button_background.xml. then copy and paste the following code. You can change it according your need.
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<corners
android:radius="14dp" />
<solid android:color="@color/colorButton" />
<padding
android:bottom="0dp"
android:left="0dp"
android:right="0dp"
android:top="0dp" />
<size
android:width="120dp"
android:height="40dp" />
</shape>
Now you can use it.
<Button
android:background="@drawable/button_background"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
Giving width to Label is not a proper way. you should take one div or table structure to manage this. but still if you don't want to change your whole code then you can use following code.
label {
width:200px;
float: left;
}
In the controller, shouldn't the response body annotation be on the return type and not the method, like so :
@RequestMapping(value="/getTemperature/{id}", headers="Accept=*/*", method = RequestMethod.GET)
public @ResponseBody Weather getTemparature(@PathVariable("id") Integer id){
Weather weather = weatherService.getCurrentWeather(id);
return weather;
}
I'd also use the raw jquery.ajax function, and make sure contentType and dataType are being set correctly.
On a different note, I find the spring handling of json rather problematic. It was easier when I did it all myself using strings, and GSON.
<iframe src="page.html"></iframe>
You will need to add some styling to this iframe. You can specify width, height, and if you want it to look like a part of the original page include frameborder="0"
.
There is no other way to do it in pure HTML. This is what they were built for, it's like saying I want to fry an egg without an egg.
Adding to Kim .J's solution: you can add preserveWhitespace=true
in order to avoid a Whitespace error. Like this:
soap.CreateClient(url,preserveWhitespace=true,function(...){
(so Windows releases it's hold on the file)
Instead, do Ctrl+Alt+Del right after the Stop of the service and kill the .exe of the service. Than, you can uninstall the service without rebooting. This happened to me in the past and it solves the part that you need to reboot.
You can use System Internals PSEXEC command to remotely execute a net stop yourservice, then net start yourservice
If optimal performance is not a requirement and you just want something dead simple, you can define a basic function to test each character using the string class's built in "isspace" method:
def remove_space(input_string):
no_white_space = ''
for c in input_string:
if not c.isspace():
no_white_space += c
return no_white_space
Building the no_white_space
string this way will not have ideal performance, but the solution is easy to understand.
>>> remove_space('strip my spaces')
'stripmyspaces'
If you don't want to define a function, you can convert this into something vaguely similar with list comprehension. Borrowing from the top answer's join
solution:
>>> "".join([c for c in "strip my spaces" if not c.isspace()])
'stripmyspaces'
Why not just using simple css :
<router-outlet></router-outlet>
<div class="loading"></div>
And in your styles :
div.loading{
height: 100px;
background-color: red;
display: none;
}
router-outlet + div.loading{
display: block;
}
Or even we can do this for the first answer:
<router-outlet></router-outlet>
<spinner-component></spinner-component>
And then simply just
spinner-component{
display:none;
}
router-outlet + spinner-component{
display: block;
}
The trick here is, the new routes and components will always appear after router-outlet , so with a simple css selector we can show and hide the loading.
I am working for customer that has a big project that is using Linq-to-SQL. When the project started it was the obvious choice, because Entity Framework was lacking some major features at that time and performance of Linq-to-SQL was much better.
Now EF has evolved and Linq-to-SQL is lacking async support, which is great for highly scalable services. We have 100+ requests per second sometimes and despite we have optimized our databases, most queries still take several milliseconds to complete. Because of the synchronous database calls, the thread is blocked and not available for other requests.
We are thinking to switch to Entity Framework, solely for this feature. It's a shame that Microsoft didn't implement async support into Linq-to-SQL (or open-sourced it, so the community could do it).
Addendum December 2018: Microsoft is moving towards .NET Core and Linq-2-SQL isn't support on .NET Core, so you need to move to EF to make sure you can migrate to EF.Core in the future.
There are also some other options to consider, such as LLBLGen. It's a mature ORM solution that exists already a long time and has been proven more future-proof then the MS data solutions (ODBC, ADO, ADO.NET, Linq-2-SQL, EF, EF.core).
Short function to remove all non-numeric characters but keep the decimal (and return the number):
parseNum = str => +str.replace(/[^.\d]/g, '');_x000D_
let str = 'a1b2c.d3e';_x000D_
console.log(parseNum(str));
_x000D_
Roger's answer was very helpful.
I had a little trouble using it, though, and kept getting the red "Windows can't verify the publisher of this driver software" error dialog. The key was to install the test root certificate with
certutil -addstore Root Demo_CA.cer
which Roger's answer didn't quite cover.
Here is a batch file that worked for me (with my .inf file, not included). It shows how to do it all from start to finish, with no GUI tools at all (except for a few password prompts).
REM Demo of signing a printer driver with a self-signed test certificate.
REM Run as administrator (else devcon won't be able to try installing the driver)
REM Use a single 'x' as the password for all certificates for simplicity.
PATH %PATH%;"c:\Program Files\Microsoft SDKs\Windows\v7.1\Bin";"c:\Program Files\Microsoft SDKs\Windows\v7.0\Bin";c:\WinDDK\7600.16385.1\bin\selfsign;c:\WinDDK\7600.16385.1\Tools\devcon\amd64
makecert -r -pe -n "CN=Demo_CA" -ss CA -sr CurrentUser ^
-a sha256 -cy authority -sky signature ^
-sv Demo_CA.pvk Demo_CA.cer
makecert -pe -n "CN=Demo_SPC" -a sha256 -cy end ^
-sky signature ^
-ic Demo_CA.cer -iv Demo_CA.pvk ^
-sv Demo_SPC.pvk Demo_SPC.cer
pvk2pfx -pvk Demo_SPC.pvk -spc Demo_SPC.cer ^
-pfx Demo_SPC.pfx ^
-po x
inf2cat /drv:driver /os:XP_X86,Vista_X64,Vista_X86,7_X64,7_X86 /v
signtool sign /d "description" /du "www.yoyodyne.com" ^
/f Demo_SPC.pfx ^
/p x ^
/v driver\demoprinter.cat
certutil -addstore Root Demo_CA.cer
rem Needs administrator. If this command works, the driver is properly signed.
devcon install driver\demoprinter.inf LPTENUM\Yoyodyne_IndustriesDemoPrinter_F84F
rem Now uninstall the test driver and certificate.
devcon remove driver\demoprinter.inf LPTENUM\Yoyodyne_IndustriesDemoPrinter_F84F
certutil -delstore Root Demo_CA
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
import java.util.stream.Collectors;
import java.util.stream.Stream;
public class Stack2 {
public static void waitFor(List<Future<?>> futures) {
List<Future<?>> futureCopies = new ArrayList<Future<?>>(futures);//contains features for which status has not been completed
while (!futureCopies.isEmpty()) {//worst case :all task worked without exception, then this method should wait for all tasks
Iterator<Future<?>> futureCopiesIterator = futureCopies.iterator();
while (futureCopiesIterator.hasNext()) {
Future<?> future = futureCopiesIterator.next();
if (future.isDone()) {//already done
futureCopiesIterator.remove();
try {
future.get();// no longer waiting
} catch (InterruptedException e) {
//ignore
//only happen when current Thread interrupted
} catch (ExecutionException e) {
Throwable throwable = e.getCause();// real cause of exception
futureCopies.forEach(f -> f.cancel(true));//cancel other tasks that not completed
return;
}
}
}
}
}
public static void main(String[] args) {
ExecutorService executorService = Executors.newFixedThreadPool(3);
Runnable runnable1 = new Runnable (){
public void run(){
try {
Thread.sleep(5000);
} catch (InterruptedException e) {
}
}
};
Runnable runnable2 = new Runnable (){
public void run(){
try {
Thread.sleep(4000);
} catch (InterruptedException e) {
}
}
};
Runnable fail = new Runnable (){
public void run(){
try {
Thread.sleep(1000);
throw new RuntimeException("bla bla bla");
} catch (InterruptedException e) {
}
}
};
List<Future<?>> futures = Stream.of(runnable1,fail,runnable2)
.map(executorService::submit)
.collect(Collectors.toList());
double start = System.nanoTime();
waitFor(futures);
double end = (System.nanoTime()-start)/1e9;
System.out.println(end +" seconds");
}
}
Security concern using express.bodyParser()
While all the other answers currently recommend using the express.bodyParser()
middleware, this is actually a wrapper around the express.json()
, express.urlencoded()
, and express.multipart()
middlewares (http://expressjs.com/api.html#bodyParser). The parsing of form request bodies is done by the express.urlencoded()
middleware and is all that you need to expose your form data on req.body
object.
Due to a security concern with how express.multipart()
/connect.multipart()
creates temporary files for all uploaded files (and are not garbage collected), it is now recommended not to use the express.bodyParser()
wrapper but instead use only the middlewares you need.
Note: connect.bodyParser()
will soon be updated to only include urlencoded
and json
when Connect 3.0 is released (which Express extends).
So in short, instead of ...
app.use(express.bodyParser());
...you should use
app.use(express.urlencoded());
app.use(express.json()); // if needed
and if/when you need to handle multipart forms (file uploads), use a third party library or middleware such as multiparty, busboy, dicer, etc.
For aspnetcore-3.1, you can also use Problem()
like below;
https://docs.microsoft.com/en-us/aspnet/core/web-api/handle-errors?view=aspnetcore-3.1
[Route("/error-local-development")]
public IActionResult ErrorLocalDevelopment(
[FromServices] IWebHostEnvironment webHostEnvironment)
{
if (webHostEnvironment.EnvironmentName != "Development")
{
throw new InvalidOperationException(
"This shouldn't be invoked in non-development environments.");
}
var context = HttpContext.Features.Get<IExceptionHandlerFeature>();
return Problem(
detail: context.Error.StackTrace,
title: context.Error.Message);
}
Use CharField
for phone field in the model and the localflavor
app for form validation:
Floats are used to store a wider range of number than can be fit in an integer. These include decimal numbers and scientific notation style numbers that can be bigger values than can fit in 32 bits. Here's the deep dive into them: http://en.wikipedia.org/wiki/Floating_point
I was facing the same issue and I searched for almost 2 hours and tried with different possible ways like replacing old hibernate JARs and changing the DB table schema. But finally got the solution as below:
SessionFactory factory = new Configuration().configure().buildSessionFactory(); //This line to be replaced with below commented line
Replace above for
//Configuration config = new Configuration().configure();
//ServiceRegistry servReg = new StandardServiceRegistryBuilder().applySettings(config.getProperties()).build();
//SessionFactory factory = config.buildSessionFactory(servReg);
It will then work fine..
http://msdn.microsoft.com/en-us/library/system.convert.aspx
l1 = Convert.ToInt64(strValue)
Though the example you gave isn't an integer, so I'm not sure why you want it as a long.
It sounds indeed like video streaming more than image streaming, as someone suggested. JPEG/PNG compression isn't targeted for these types of speeds, so forget them.
Imagine having a recording codec on your system that can realtime record an incoming video stream (your screen). A bit like Fraps perhaps. Then imagine a video playback codec on the other side (the remote client). As HD recorders can do it (record live and even playback live from the same HD), so should you, in the end. The HD surely can't deliver images quicker than you can read your display, so that isn't the bottleneck. The bottleneck are the video codecs. You'll find the encoder much more of a problem than the decoder, as all decoders are mostly free.
I'm not saying it's simple; I myself have used DirectShow to encode a video file, and it's not realtime by far. But given the right codec I'm convinced it can work.
if you want to align only this cells, you can do something like this:
$style = array(
'alignment' => array(
'horizontal' => PHPExcel_Style_Alignment::HORIZONTAL_CENTER,
)
);
$sheet->getStyle("A1:B1")->applyFromArray($style);
But, if you want to apply this style to all cells, try this:
$style = array(
'alignment' => array(
'horizontal' => PHPExcel_Style_Alignment::HORIZONTAL_CENTER,
)
);
$sheet->getDefaultStyle()->applyFromArray($style);
now you can use rgba in CSS properties like this:
.class {
background: rgba(0,0,0,0.5);
}
0.5 is the transparency, change the values according to your design.
Live demo http://jsfiddle.net/EeAaB/
A lot of the answers on this page only apply to a single cell, and OP asked for all the selected cells.
If all you want is the cell contents, and you don't care about references to the actual cells that are selected, you can just do this:
Private Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim SelectedThings As String = DataGridView1.GetClipboardContent().GetText().Replace(ChrW(9), ",")
TextBox1.Text = SelectedThings
End Sub
When Button1
is clicked, this will fill TextBox1
with the comma-separated values of the selected cells.
With POD you can also write
Snapshot s = {};
You shouldn't use memset in C++, memset has the drawback that if there is a non-POD in the struct it will destroy it.
or like this:
struct init
{
template <typename T>
operator T * ()
{
return new T();
}
};
Snapshot* s = init();
I'd start by using glob:
from PIL import Image
import glob
image_list = []
for filename in glob.glob('yourpath/*.gif'): #assuming gif
im=Image.open(filename)
image_list.append(im)
then do what you need to do with your list of images (image_list).
To plot an equation that is not solved for a specific variable (like circle or hyperbola):
import numpy as np
import matplotlib.pyplot as plt
plt.figure() # Create a new figure window
xlist = np.linspace(-2.0, 2.0, 100) # Create 1-D arrays for x,y dimensions
ylist = np.linspace(-2.0, 2.0, 100)
X,Y = np.meshgrid(xlist, ylist) # Create 2-D grid xlist,ylist values
F = X**2 + Y**2 - 1 # 'Circle Equation
plt.contour(X, Y, F, [0], colors = 'k', linestyles = 'solid')
plt.show()
More about it: http://courses.csail.mit.edu/6.867/wiki/images/3/3f/Plot-python.pdf
I had the same problem, but managed to fix it by suppressing the 'Expect: 100-continue' header that cURL usually sends (the following is PHP code, but should work similarly with other cURL APIs):
curl_setopt($curl, CURLOPT_HTTPHEADER, array('Expect:'));
By the way, I am sending calls to the HTTP server that is included in the JDK 6 REST stuff, which has all kinds of problems. In this case, it first sends a 100 response, and then with some requests doesn't send the subsequent 200 response correctly.
I'm expecting, as Rohit Vats mentioned in his Comment too, that you have a wrong structure in your DataTable
.
var t = new DataTable();
// create column header
foreach ( string s in identifiders ) {
t.Columns.Add(new DataColumn(s)); // <<=== i'm expecting you don't have defined any DataColumns, haven't you?
}
// Add data to DataTable
for ( int lineNumber = identifierLineNumber; lineNumber < lineCount; lineNumber++ ) {
DataRow newRow = t.NewRow();
for ( int column = 0; column < identifierCount; column++ ) {
newRow[column] = fileContent.ElementAt(lineNumber)[column];
}
t.Rows.Add(newRow);
}
return t.DefaultView;
I have used this DataTable in a ValueConverter
and it works like a charm with the following binding.
<DataGrid AutoGenerateColumns="True" ItemsSource="{Binding Path=FileContent, Converter={StaticResource dataGridConverter}}" />
So what it does, the ValueConverter
transforms my bounded data (what ever it is, in my case it's a List<string[]>
) into a DataTable
, as the code above shows, and passes this DataTable
to the DataGrid
. With specified data columns the data grid can generate the needed columns and visualize them.
To say it in a nutshell, in my case the binding to a DataTable
works like a charm.
I had to do something like this on a version of linux that didn't have the right options compiled into wget. This example is for downloading the memory analysis tool 'guppy'. I'm not sure if it's important or not, but I kept the target file's name the same as the url target name...
Here's what I came up with:
python -c "import requests; r = requests.get('https://pypi.python.org/packages/source/g/guppy/guppy-0.1.10.tar.gz') ; open('guppy-0.1.10.tar.gz' , 'wb').write(r.content)"
That's the one-liner, here's it a little more readable:
import requests
fname = 'guppy-0.1.10.tar.gz'
url = 'https://pypi.python.org/packages/source/g/guppy/' + fname
r = requests.get(url)
open(fname , 'wb').write(r.content)
This worked for downloading a tarball. I was able to extract the package and download it after downloading.
EDIT:
To address a question, here is an implementation with a progress bar printed to STDOUT. There is probably a more portable way to do this without the clint
package, but this was tested on my machine and works fine:
#!/usr/bin/env python
from clint.textui import progress
import requests
fname = 'guppy-0.1.10.tar.gz'
url = 'https://pypi.python.org/packages/source/g/guppy/' + fname
r = requests.get(url, stream=True)
with open(fname, 'wb') as f:
total_length = int(r.headers.get('content-length'))
for chunk in progress.bar(r.iter_content(chunk_size=1024), expected_size=(total_length/1024) + 1):
if chunk:
f.write(chunk)
f.flush()
The long boring solution, which is not involved with CLI, you can manually navigate to:
your local repo folder ? .git folder (hidden) ? config file
then choose your text editor to open it and look for url located under the [remote "origin"] section.
The prestListView.getItemAtPosition(position); returns the UI widget: Text, Icon, ...
Try this instead:
Object o = prestationAdapterEco.getItemAtPosition(position);
or
Object o = arg0.getItemAtPosition(position);
Get the object from the adapter. Not from the list-view.
2. Object o is a prestationEco object. Not a String.
Rather than changing the memory_limit
value in your php.ini
file, if there's a part of your code that could use a lot of memory, you could remove the memory_limit
before that section runs, and then replace it after.
$limit = ini_get('memory_limit');
ini_set('memory_limit', -1);
// ... do heavy stuff
ini_set('memory_limit', $limit);
1 Step - Install a required extension
sudo apt-get install libz-dev -y
2 Step - Install the PHP extension
pecl install zlib zip
3 Step - Restart your Apache
sudo /etc/init.d/apache2 restart
If does not work you can check if the zip.ini is called in your phpinfo, to check if the zip.so was included.
JQuery's :empty selector selects all elements on the page that are empty in the sense that they have no child elements, including text nodes, not all inputs that have no text in them.
Jquery: How to check if an input element has not been filled in.
Here's the code stolen from the above thread:
$('#apply-form input').blur(function() //whenever you click off an input element
{
if( !$(this).val() ) { //if it is blank.
alert('empty');
}
});
This works because an empty string in JavaScript is a 'falsy value', which basically means if you try to use it as a boolean value it will always evaluate to false
. If you want, you can change the conditional to $(this).val() === ''
for added clarity. :D
Remove punctuaion(It will remove . as well as part of punctuation handling using below code)
tbl = dict.fromkeys(i for i in range(sys.maxunicode) if unicodedata.category(chr(i)).startswith('P'))
text_string = text_string.translate(tbl) #text_string don't have punctuation
w = word_tokenize(text_string) #now tokenize the string
Sample Input/Output:
direct flat in oberoi esquire. 3 bhk 2195 saleable 1330 carpet. rate of 14500 final plus 1% floor rise. tax approx 9% only. flat cost with parking 3.89 cr plus taxes plus possession charger. middle floor. north door. arey and oberoi woods facing. 53% paymemt due. 1% transfer charge with buyer. total cost around 4.20 cr approx plus possession charges. rahul soni
['direct', 'flat', 'oberoi', 'esquire', '3', 'bhk', '2195', 'saleable', '1330', 'carpet', 'rate', '14500', 'final', 'plus', '1', 'floor', 'rise', 'tax', 'approx', '9', 'flat', 'cost', 'parking', '389', 'cr', 'plus', 'taxes', 'plus', 'possession', 'charger', 'middle', 'floor', 'north', 'door', 'arey', 'oberoi', 'woods', 'facing', '53', 'paymemt', 'due', '1', 'transfer', 'charge', 'buyer', 'total', 'cost', 'around', '420', 'cr', 'approx', 'plus', 'possession', 'charges', 'rahul', 'soni']
Code example follows. Last string suitable for use in filenames.
>>> from datetime import datetime
>>> from dateutil.tz import tzlocal
>>> str(datetime.now(tzlocal()))
'2015-04-01 11:19:47.980883-07:00'
>>> str(datetime.now(tzlocal())).replace(' ','-').replace(':','').replace('.','-')
'2015-04-01-111947-981879-0700'
>>>
Not with an iterator.
For org.json.JSONArray
, you can do:
for (int i = 0; i < arr.length(); i++) {
arr.getJSONObject(i);
}
For javax.json.JsonArray
, you can do:
for (int i = 0; i < arr.size(); i++) {
arr.getJsonObject(i);
}
Here are a few more tips:
In Arch Linux the global one is at /etc/vimrc
. There are some comments in there with helpful details.
Since the filename starts with a .
, it's hidden unless you use ls -a
to show ALL files.
Typing :version
while in Vim will show you a bunch of interesting information including the file location.
If you're not sure what ~/.vimrc
means look at this question.
You can also get DateTime object from timestamp, including your current daylight saving time:
public DateTime getDateTimeFromTimestamp(Long value) {
TimeZone timeZone = TimeZone.getDefault();
long offset = timeZone.getOffset(value);
if (offset < 0) {
value -= offset;
} else {
value += offset;
}
return new DateTime(value);
}
Ok, the way I see it you have 3 options.
1: If you simply wish to check whether the number is an integer, and don't care about converting it, but simply wish to keep it as a string and don't care about potential overflows, checking whether it matches a regex for an integer would be ideal here.
2: You can use boost::lexical_cast and then catch a potential boost::bad_lexical_cast exception to see if the conversion failed. This would work well if you can use boost and if failing the conversion is an exceptional condition.
3: Roll your own function similar to lexical_cast that checks the conversion and returns true/false depending on whether it's successful or not. This would work in case 1 & 2 doesn't fit your requirements.
Thank guys for showing all those examples. I was still having trouble with my contact page on small media screens like below 480px after trying your examples. Bootstrap kept inserting height: auto
.
Element Inspector / Devtools will show the height in:
element.style {
}
In my case I was seeing: section#contact.contact-container | 303 x 743
in the browser window.
So the following full-length works to eliminate the issue:
$('section#contact.contact-container').height('');
With ES6, this is possible in exactly the manner you have described; a detailed description can be found in the documentation.
Default parameters in JavaScript can be implemented in mainly two ways:
function myfunc(a, b)
{
// use this if you specifically want to know if b was passed
if (b === undefined) {
// b was not passed
}
// use this if you know that a truthy value comparison will be enough
if (b) {
// b was passed and has truthy value
} else {
// b was not passed or has falsy value
}
// use this to set b to a default value (using truthy comparison)
b = b || "default value";
}
The expression b || "default value"
evaluates the value AND existence of b
and returns the value of "default value"
if b
either doesn't exist or is falsy.
Alternative declaration:
function myfunc(a)
{
var b;
// use this to determine whether b was passed or not
if (arguments.length == 1) {
// b was not passed
} else {
b = arguments[1]; // take second argument
}
}
The special "array" arguments
is available inside the function; it contains all the arguments, starting from index 0
to N - 1
(where N
is the number of arguments passed).
This is typically used to support an unknown number of optional parameters (of the same type); however, stating the expected arguments is preferred!
Although undefined
is not writable since ES5, some browsers are known to not enforce this. There are two alternatives you could use if you're worried about this:
b === void 0;
typeof b === 'undefined'; // also works for undeclared variables
The find
command will take long time because it scans real files in file system.
The quickest way is using locate
command, which will give result immediately:
locate "John"
If the command is not found, you need to install mlocate
package and run updatedb
command first to prepare the search database for the first time.
More detail here: https://medium.com/@thucnc/the-fastest-way-to-find-files-by-filename-mlocate-locate-commands-55bf40b297ab
Step 1
Add the file name(s) to your .gitignore
file.
Step 2
git filter-branch --force --index-filter \
'git rm -r --cached --ignore-unmatch YOURFILE' \
--prune-empty --tag-name-filter cat -- --all
Step 3
git push -f origin branch
A big thank you to @mu.
There are two options. The first (and better) one is using the Fetch as Google option in Webmaster Tools that Mike Flynn commented about. Here are detailed instructions:
With the option above, as long as every page can be reached from some link on the initial page or a page that it links to, Google should recrawl the whole thing. If you want to explicitly tell it a list of pages to crawl on the domain, you can follow the directions to submit a sitemap.
Your second (and generally slower) option is, as seanbreeden pointed out, submitting here: http://www.google.com/addurl/
Update 2019:
The most succinct way to do this is:
Get-WmiObject -Class win32_computersystem -Property *
In addition, since info locals
does not display the arguments to the function you're in, use
(gdb) info args
For example:
int main(int argc, char *argv[]) {
argc = 6*7; //Break here.
return 0;
}
argc
and argv
won't be shown by info locals
. The message will be "No locals."
Reference: info locals command.
There is only one correct answer to this and most systems get it wrong. Number of milliseconds since epoch, aka a 64 bit integer. Time Zone is a UI concern and has no business in the app layer or db layer. Why does your db care what time zone something is, when you know it's going to store it as a 64 bit integer then do the transformation calculations.
Strip out the extraneous bits and just treat dates as numbers up to the UI. You can use simple arithmetic operators to do queries and logic.
To generate a shared library you need first to compile your C code with the -fPIC
(position independent code) flag.
gcc -c -fPIC hello.c -o hello.o
This will generate an object file (.o), now you take it and create the .so file:
gcc hello.o -shared -o libhello.so
EDIT: Suggestions from the comments:
You can use
gcc -shared -o libhello.so -fPIC hello.c
to do it in one step. – Jonathan Leffler
I also suggest to add -Wall
to get all warnings, and -g
to get debugging information, to your gcc
commands. – Basile Starynkevitch
I don't think you will get a good answer to this, partly because nobody really agrees on what REST is. The wikipedia page is heavy on buzzwords and light on explanation. The discussion page is worth a skim just to see how much people disagree on this. As far as I can tell however, REST means this:
Instead of having randomly named setter and getter URLs and using GET
for all the getters and POST
for all the setters, we try to have the URLs identify resources, and then use the HTTP actions GET
, POST
, PUT
and DELETE
to do stuff to them. So instead of
GET /get_article?id=1
POST /delete_article id=1
You would do
GET /articles/1/
DELETE /articles/1/
And then POST
and PUT
correspond to "create" and "update" operations (but nobody agrees which way round).
I think the caching arguments are wrong, because query strings are generally cached, and besides you don't really need to use them. For example django makes something like this very easy, and I wouldn't say it was REST:
GET /get_article/1/
POST /delete_article/ id=1
Or even just include the verb in the URL:
GET /read/article/1/
POST /delete/article/1/
POST /update/article/1/
POST /create/article/
In that case GET
means something without side-effects, and POST
means something that changes data on the server. I think this is perhaps a bit clearer and easier, especially as you can avoid the whole PUT
-vs-POST
thing. Plus you can add more verbs if you want to, so you aren't artificially bound to what HTTP offers. For example:
POST /hide/article/1/
POST /show/article/1/
(Or whatever, it's hard to think of examples until they happen!)
So in conclusion, there are only two advantages I can see:
synchronize("/articles/1/")
or whatever. This depends heavily on your code.However I think there are some pretty big disadvantages:
PUT
and POST
are. In English they mean similar things ("I'm going to put/post a notice on the wall.").So in conclusion I would say: unless you really want to go to the extra effort, or if your service maps really well to CRUD operations, save REST for the second version of your API.
I just came across another problem with REST: It's not easy to do more than one thing in one request or specify which parts of a compound object you want to get. This is especially important on mobile where round-trip-time can be significant and connections are unreliable. For example, suppose you are getting posts on a facebook timeline. The "pure" REST way would be something like
GET /timeline_posts // Returns a list of post IDs.
GET /timeline_posts/1/ // Returns a list of message IDs in the post.
GET /timeline_posts/2/
GET /timeline_posts/3/
GET /message/10/
GET /message/11/
....
Which is kind of ridiculous. Facebook's API is pretty great IMO, so let's see what they do:
By default, most object properties are returned when you make a query. You can choose the fields (or connections) you want returned with the "fields" query parameter. For example, this URL will only return the id, name, and picture of Ben: https://graph.facebook.com/bgolub?fields=id,name,picture
I have no idea how you'd do something like that with REST, and if you did whether it would still count as REST. I would certainly ignore anyone who tries to tell you that you shouldn't do that though (especially if the reason is "because it isn't REST")!
uint
and ulong
are the unsigned versions of int
and long
. That means they can't be negative. Instead they have a larger maximum value.
Type Min Max CLS-compliant int -2,147,483,648 2,147,483,647 Yes uint 0 4,294,967,295 No long –9,223,372,036,854,775,808 9,223,372,036,854,775,807 Yes ulong 0 18,446,744,073,709,551,615 No
To write a literal unsigned int in your source code you can use the suffix u
or U
for example 123U
.
You should not use uint and ulong in your public interface if you wish to be CLS-Compliant.
Read the documentation for more information:
By the way, there is also short and ushort and byte and sbyte.
SQL Server doesn't have regular expressions. It uses the LIKE pattern matching syntax which isn't the same.
As it happens, you are close. Just need leading+trailing wildcards and move the NOT
WHERE whatever NOT LIKE '%[a-z0-9]%'
Once you have cloned the repo, you have everything: you can then hg up branchname
or hg up tagname
to update your working copy.
UP: hg up
is a shortcut of hg update
, which also has hg checkout
alias for people with git
habits.
Had the same problem, it turned out it was the WindowsFirewall blocking connections. Try to disable WindowsFirewall for a while to see if helps and if it is the problem open ports as needed.
Yes, but you don't incur the cost of global variables until you stop working in the code that uses global variables and start writing something else that uses the code that uses global variables. But the cost is still there.
In other words, it's a long term indirect cost and as such most people think it's not bad.
You should try it like this:
var result =
from priceLog in PriceLogList
group priceLog by priceLog.LogDateTime.ToString("MMM yyyy") into dateGroup
select new {
LogDateTime = dateGroup.Key,
AvgPrice = dateGroup.Average(priceLog => priceLog.Price)
};
You need to download this from Microsoft: http://www.microsoft.com/en-us/download/details.aspx?id=7435.
The tool is called "Microsoft URL Rewrite Module 2.0 for IIS 7" and is described as follows by Microsoft: "URL Rewrite Module 2.0 provides a rule-based rewriting mechanism for changing requested URL’s before they get processed by web server and for modifying response content before it gets served to HTTP clients"
Yes, that is one way to get the first line of output from a command.
If the command outputs anything to standard error that you would like to capture in the same manner, you need to redirect the standard error of the command to the standard output stream:
utility 2>&1 | head -n 1
There are many other ways to capture the first line too, including sed 1q
(quit after first line), sed -n 1p
(only print first line, but read everything), awk 'FNR == 1'
(only print first line, but again, read everything) etc.
Get FullName in ListBox of files (full path) list (Thomas Levesque answer modificaton, thanks Thomas):
...
string tmpStr = "";
foreach (var item in listBoxFiles.SelectedItems)
{
tmpStr += listBoxFiles.GetItemText(item) + "\n";
}
MessageBox.Show(tmpStr);
...
If you want to literally use the method code from A
and B
you can make your C
class contain an instance of each. If you code against interfaces for A
and B
then your clients don't need to know you're giving them a C
rather than an A
or a B
.
interface IA { void SomeMethodOnA(); }
interface IB { void SomeMethodOnB(); }
class A : IA { void SomeMethodOnA() { /* do something */ } }
class B : IB { void SomeMethodOnB() { /* do something */ } }
class C : IA, IB
{
private IA a = new A();
private IB b = new B();
void SomeMethodOnA() { a.SomeMethodOnA(); }
void SomeMethodOnB() { b.SomeMethodOnB(); }
}
As has been mentioned cron is deprecated (but supported), and launchd is recommended for OS X.
This is taken from developer.apple.com
If the system is turned off or asleep, cron jobs do not execute; they will not run until the next designated time occurs.
If you schedule a launchd job by setting the StartCalendarInterval key and the computer is asleep when the job should have run, your job will run when the computer wakes up. However, if the machine is off when the job should have run, the job does not execute until the next designated time occurs.
All other launchd jobs are skipped when the computer is turned off or asleep; they will not run until the next designated time occurs.
Consequently, if the computer is always off at the job’s scheduled time, both cron jobs and launchd jobs never run. For example, if you always turn your computer off at night, a job scheduled to run at 1 A.M. will never be run.
species = {'HI': {'1': (1215.671, 0.41600000000000004),
'10': (919.351, 0.0012),
'1025': (1025.722, 0.0791),
'11': (918.129, 0.0009199999999999999),
'12': (917.181, 0.000723),
'1215': (1215.671, 0.41600000000000004),
'13': (916.429, 0.0005769999999999999),
'14': (915.824, 0.000468),
'15': (915.329, 0.00038500000000000003),
'CII': {'1036': (1036.3367, 0.11900000000000001), '1334': (1334.532, 0.129)}}
The following code will make a copy of dict species
and delete items which are not in trans_HI
trans_HI=['1025','1215']
for transition in species['HI'].copy().keys():
if transition not in trans_HI:
species['HI'].pop(transition)
I found it strangely difficult to locate the python docs for __enter__
and __exit__
methods by Googling, so to help others here is the link:
https://docs.python.org/2/reference/datamodel.html#with-statement-context-managers
https://docs.python.org/3/reference/datamodel.html#with-statement-context-managers
(detail is the same for both versions)
object.__enter__(self)
Enter the runtime context related to this object. Thewith
statement will bind this method’s return value to the target(s) specified in the as clause of the statement, if any.
object.__exit__(self, exc_type, exc_value, traceback)
Exit the runtime context related to this object. The parameters describe the exception that caused the context to be exited. If the context was exited without an exception, all three arguments will beNone
.If an exception is supplied, and the method wishes to suppress the exception (i.e., prevent it from being propagated), it should return a true value. Otherwise, the exception will be processed normally upon exit from this method.
Note that
__exit__()
methods should not reraise the passed-in exception; this is the caller’s responsibility.
I was hoping for a clear description of the __exit__
method arguments. This is lacking but we can deduce them...
Presumably exc_type
is the class of the exception.
It says you should not re-raise the passed-in exception. This suggests to us that one of the arguments might be an actual Exception instance ...or maybe you're supposed to instantiate it yourself from the type and value?
We can answer by looking at this article:
http://effbot.org/zone/python-with-statement.htm
For example, the following
__exit__
method swallows any TypeError, but lets all other exceptions through:
def __exit__(self, type, value, traceback):
return isinstance(value, TypeError)
...so clearly value
is an Exception instance.
And presumably traceback
is a Python traceback object.
I don't know if VB.net in VS 2008 is any different, but none of the above worked for me. Double-clicking My Project in Solution Explorer brings up the window seen below. Select Application on the left, then browse for your icon using the combobox. After you build, it should show up on your exe file.
Gemfile
instead of gemfile
.Gemfile
.You may try to put the right database name in connection url in the configuration file. As I had the same error while run the POJO class file and it has been solved by this.
invisible(cat("Dataset: ", dataset, fill = TRUE))
invisible(cat(" Width: " ,width, fill = TRUE))
invisible(cat(" Bin1: " ,bin1interval, fill = TRUE))
invisible(cat(" Bin2: " ,bin2interval, fill = TRUE))
invisible(cat(" Bin3: " ,bin3interval, fill = TRUE))
produces output without NULL at the end of the line or on the next line
Dataset: 17 19 26 29 31 32 34 45 47 51 52 59 60 62 63
Width: 15.33333
Bin1: 17 32.33333
Bin2: 32.33333 47.66667
Bin3: 47.66667 63
Method to get system Date and time in a single string
public static string GetTimeDate()
{
string DateTime = System.DateTime.Now.ToString("dd-MM-yyyy HH:mm:ss");
return DateTime;
}
sample OUTPUT :-16-03-2015 07:45:15
To pass an object to a fragment, do the following:
First store the objects in Bundle, don't forget to put implements serializable in class.
CategoryRowFragment fragment = new CategoryRowFragment();
// pass arguments to fragment
Bundle bundle = new Bundle();
// event list we want to populate
bundle.putSerializable("eventsList", eventsList);
// the description of the row
bundle.putSerializable("categoryRow", categoryRow);
fragment.setArguments(bundle);
Then retrieve bundles in Fragment
// events that will be populated in this row_x000D_
mEventsList = (ArrayList<Event>)getArguments().getSerializable("eventsList");_x000D_
_x000D_
// description of events to be populated in this row_x000D_
mCategoryRow = (CategoryRow)getArguments().getSerializable("categoryRow");
_x000D_
https://facebook.github.io/react/tips/inline-styles.html
You don't need the quotes.
<a style={{backgroundColor: bgColors.Yellow}}>yellow</a>
Newer versions of Groovy (1.7.2+) offer a JDK extension to more easily traverse over files in a directory, for example:
import static groovy.io.FileType.FILES
def dir = new File(".");
def files = [];
dir.traverse(type: FILES, maxDepth: 0) { files.add(it) };
See also [1] for more examples.
[1] http://mrhaki.blogspot.nl/2010/04/groovy-goodness-traversing-directory.html
When you want to convert your code to result( executable, library or whatever ), there is 2 steps:
1) compile
2) link
In first step compiler should now about some things like sizeof objects that used by you, prototype of functions and maybe inheritance. on the other hand linker want to find implementation of functions and global variables in your code.
Now when you use ClassTwo
in File1.cpp
compiler know nothing about it and don't know how much memory should allocate for it or for example witch members it have or is it a class and enum or even a typedef of int, so compilation will be failed by the compiler. adding File2.cpp
solve the problem of linker that look for implementation but the compiler is still unhappy, because it know nothing about your type.
So remember, in compile phase you always work with just one file( and of course files that included by that one file ) and in link phase you need multiple files that contain implementations. and since C/C++ are statically typed and they allow their identifier to work for many purposes( definition, typedef, enum class, ... ) so you should always identify you identifier to the compiler and then use it and as a rule compiler should always know size of your variable!!
synchronized
is method level/block level access restriction modifier. It will make sure that one thread owns the lock for critical section. Only the thread,which own a lock can enter synchronized
block. If other threads are trying to access this critical section, they have to wait till current owner releases the lock.
volatile
is variable access modifier which forces all threads to get latest value of the variable from main memory. No locking is required to access volatile
variables. All threads can access volatile variable value at same time.
A good example to use volatile variable : Date
variable.
Assume that you have made Date variable volatile
. All the threads, which access this variable always get latest data from main memory so that all threads show real (actual) Date value. You don't need different threads showing different time for same variable. All threads should show right Date value.
Have a look at this article for better understanding of volatile
concept.
Lawrence Dol cleary explained your read-write-update query
.
Regarding your other queries
When is it more suitable to declare variables volatile than access them through synchronized?
You have to use volatile
if you think all threads should get actual value of the variable in real time like the example I have explained for Date variable.
Is it a good idea to use volatile for variables that depend on input?
Answer will be same as in first query.
Refer to this article for better understanding.
You can use css3 animations to flash an element
.flash {
-moz-animation: flash 1s ease-out;
-moz-animation-iteration-count: 1;
-webkit-animation: flash 1s ease-out;
-webkit-animation-iteration-count: 1;
-ms-animation: flash 1s ease-out;
-ms-animation-iteration-count: 1;
}
@keyframes flash {
0% { background-color: transparent; }
50% { background-color: #fbf8b2; }
100% { background-color: transparent; }
}
@-webkit-keyframes flash {
0% { background-color: transparent; }
50% { background-color: #fbf8b2; }
100% { background-color: transparent; }
}
@-moz-keyframes flash {
0% { background-color: transparent; }
50% { background-color: #fbf8b2; }
100% { background-color: transparent; }
}
@-ms-keyframes flash {
0% { background-color: transparent; }
50% { background-color: #fbf8b2; }
100% { background-color: transparent; }
}
And you jQuery to add the class
jQuery(selector).addClass("flash");
You can also do what vs dev suggests programmatically by assigning the style with Javascript by iterating through the columns and setting the td element at a specific index to have that style.
I faced this issue because my selector was depend on id
meanwhile I did not set id for my element
my selector
was
$("#EmployeeName")
but my HTML element
<input type="text" name="EmployeeName">
so just make sure that your selector criteria are valid
var handle = setInterval(changeIframe, 30000);
var sites = ["google.com", "yahoo.com"];
var index = 0;
function changeIframe() {
$('#frame')[0].src = sites[index++];
index = index >= sites.length ? 0 : index;
}
Most of the expressions here solve single specific use cases.
That's okay, but I prefer an "always works" approach.
function regExpEscape(literal_string) {
return literal_string.replace(/[-[\]{}()*+!<=:?.\/\\^$|#\s,]/g, '\\$&');
}
This will "fully escape" a literal string for any of the following uses in regular expressions:
new RegExp(regExpEscape(str))
new RegExp('[' + regExpEscape(str) + ']')
new RegExp('x{1,' + regExpEscape(str) + '}')
Special Characters Covered:
-
: Creates a character range in a character class.[
/ ]
: Starts / ends a character class.{
/ }
: Starts / ends a numeration specifier.(
/ )
: Starts / ends a group.*
/ +
/ ?
: Specifies repetition type..
: Matches any character.\
: Escapes characters, and starts entities.^
: Specifies start of matching zone, and negates matching in a character class.$
: Specifies end of matching zone.|
: Specifies alternation.#
: Specifies comment in free spacing mode.\s
: Ignored in free spacing mode.,
: Separates values in numeration specifier./
: Starts or ends expression.:
: Completes special group types, and part of Perl-style character classes.!
: Negates zero-width group.<
/ =
: Part of zero-width group specifications.Notes:
/
is not strictly necessary in any flavor of regular expression. However, it protects in case someone (shudder) does eval("/" + pattern + "/");
.,
ensures that if the string is meant to be an integer in the numerical specifier, it will properly cause a RegExp compiling error instead of silently compiling wrong.#
, and \s
do not need to be escaped in JavaScript, but do in many other flavors. They are escaped here in case the regular expression will later be passed to another program.If you also need to future-proof the regular expression against potential additions to the JavaScript regex engine capabilities, I recommend using the more paranoid:
function regExpEscapeFuture(literal_string) {
return literal_string.replace(/[^A-Za-z0-9_]/g, '\\$&');
}
This function escapes every character except those explicitly guaranteed not be used for syntax in future regular expression flavors.
For the truly sanitation-keen, consider this edge case:
var s = '';
new RegExp('(choice1|choice2|' + regExpEscape(s) + ')');
This should compile fine in JavaScript, but will not in some other flavors. If intending to pass to another flavor, the null case of s === ''
should be independently checked, like so:
var s = '';
new RegExp('(choice1|choice2' + (s ? '|' + regExpEscape(s) : '') + ')');
onCreate()
method gets called when activity gets created, and its called only once in whole Activity life cycle.
where as onStart()
is called when activity is stopped... I mean it has gone to background and its onStop()
method is called by the os. onStart()
may be called multiple times in Activity life cycle.More details here
I've tried the solution presented in the accepted answer and it did not work for me. I wanted to share what DID work for me as it might help someone else. I've found this solution here.
Basically what you need to do is put your .so
files inside a a folder named lib
(Note: it is not libs
and this is not a mistake). It should be in the same structure it should be in the APK
file.
In my case it was:
Project:
|--lib:
|--|--armeabi:
|--|--|--.so files.
So I've made a lib folder and inside it an armeabi folder where I've inserted all the needed .so files. I then zipped the folder into a .zip
(the structure inside the zip file is now lib/armeabi/*.so) I renamed the .zip
file into armeabi.jar
and added the line compile fileTree(dir: 'libs', include: '*.jar')
into dependencies {}
in the gradle's build file.
This solved my problem in a rather clean way.
I'm not sure what the original poster is asking exactly. Since indexOf(...) and contains(...) both probably use loops internally, perhaps he's looking to see if this is possible at all without a loop? I can think of two ways off hand, one would of course be recurrsion:
public boolean containsChar(String s, char search) {
if (s.length() == 0)
return false;
else
return s.charAt(0) == search || containsChar(s.substring(1), search);
}
The other is far less elegant, but completeness...:
/**
* Works for strings of up to 5 characters
*/
public boolean containsChar(String s, char search) {
if (s.length() > 5) throw IllegalArgumentException();
try {
if (s.charAt(0) == search) return true;
if (s.charAt(1) == search) return true;
if (s.charAt(2) == search) return true;
if (s.charAt(3) == search) return true;
if (s.charAt(4) == search) return true;
} catch (IndexOutOfBoundsException e) {
// this should never happen...
return false;
}
return false;
}
The number of lines grow as you need to support longer and longer strings of course. But there are no loops/recurrsions at all. You can even remove the length check if you're concerned that that length() uses a loop.
I ran into a similar problem recently, only I needed to differentiate between a positive and negative angles. In case this is of use to anyone, I recommend the code snippet I grabbed from this mailing list about detecting rotation over a touch event for Android:
@Override
public boolean onTouchEvent(MotionEvent e) {
float x = e.getX();
float y = e.getY();
switch (e.getAction()) {
case MotionEvent.ACTION_MOVE:
//find an approximate angle between them.
float dx = x-cx;
float dy = y-cy;
double a=Math.atan2(dy,dx);
float dpx= mPreviousX-cx;
float dpy= mPreviousY-cy;
double b=Math.atan2(dpy, dpx);
double diff = a-b;
this.bearing -= Math.toDegrees(diff);
this.invalidate();
}
mPreviousX = x;
mPreviousY = y;
return true;
}
As an extend to @Eugene's answer another version which will work to push code from local repo to master/develop branch .
Switch to branch ‘master’:
$ git checkout master
Merge from local repo to master:
$ git merge --no-ff FEATURE/<branch_Name>
Push to master:
$ git push
Use the files
filelist of the element instead of val()
$("input[type=file]").on('change',function(){
alert(this.files[0].name);
});
Here is a checklist I use to rename a component:
1.Rename the component class (VSCode Rename Symbool will update all the references)
<Old Name>Component => <New Name>Component
2.Rename @Component selector along with references (use VSCode's Replace in Files):
app-<old-name> => app-<new-name>
Result:
@Component({
selector: 'app-<old-name>' => 'app-<new-name>',
...
})
<app-{old-name}></app-{old-name}> => <app-{new-name}></app-{new-name}>
3.Rename component folder (when renaming folder in VSCode, it will update references in module and other components)
src\app\<module>\<old-name> => src\app\<module>\<new-name>
4.Rename component files (renaming manually will be the fastest, but you can also use a terminal to rename all at once)
<old-name>.compoonent.* => <new-name>.compoonent.*
Bash:
find . -name "<old-name>.component.*" -exec rename 's/\/<old-name>\.component/\/<new-name>.component/' '{}' +
PowerShell:
Get-Item <old-name>.component.* | % { Rename-Item $_ <new-name>.component.$($_.Extension) }
Cmd:
rename <old-name>.component.* <new-name>.component.*
5.Replace file references in @Component (use VSCode's Replace in Files):
<old-name>.component => <new-name>.component
Result:
@Component({
...
templateUrl: './<old-name>.component.html' => './<old-name>.component.html',
styleUrls: ['./<old-name>.component.scss'] => ['./<new-name>.component.scss']
})
That should be sufficient
For a test task, you can use the environment property like this:
test {
environment "VAR", "val"
}
you can also use the environment property in an exec task
task dropDatabase(type: Exec) {
environment "VAR", "val"
commandLine "doit"
}
Note that with this method the environment variables are set only during the task.
Better solution :
There is a built in function in NSData
[data base64Encoding]; //iOS < 7.0
[data base64EncodedStringWithOptions:NSDataBase64Encoding76CharacterLineLength]; //iOS >= 7.0
As the definition of Linkedlist says, it is a sequence and you are guaranteed to get the elements in order.
eg:
import java.util.LinkedList;
public class ForEachDemonstrater {
public static void main(String args[]) {
LinkedList<Character> pl = new LinkedList<Character>();
pl.add('j');
pl.add('a');
pl.add('v');
pl.add('a');
for (char s : pl)
System.out.print(s+"->");
}
}
http://jsfiddle.net/QcAee/406/
Just make a invisible layer over the iframe that go back when click and go up when mouseleave event will be fired !!
Need jQuery
this solution don't propagate first click inside iframe!
$("#invisible_layer").on("click",function(){_x000D_
alert("click");_x000D_
$("#invisible_layer").css("z-index",-11);_x000D_
_x000D_
});_x000D_
$("iframe").on("mouseleave",function(){_x000D_
$("#invisible_layer").css("z-index",11);_x000D_
});
_x000D_
iframe {_x000D_
width: 500px;_x000D_
height: 300px;_x000D_
}_x000D_
#invisible_layer{_x000D_
position: absolute;_x000D_
background-color:trasparent;_x000D_
width: 500px;_x000D_
height:300px;_x000D_
}
_x000D_
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>_x000D_
<div id="message"></div>_x000D_
<div id="invisible_layer">_x000D_
_x000D_
</div>_x000D_
<iframe id="iframe" src="//example.com"></iframe>
_x000D_
In JavaScript you can use template literals:
let value = 100;
console.log(`The size is ${ value }`);
public class Person
{
public string Name { get; set; }
public string Address { get; set; }
public string Phone { get; set; }
}
public ActionResult PersonTest()
{
return View();
}
[HttpPost]
public ActionResult PersonSubmit(Vh.Web.Models.Person person)
{
System.Threading.Thread.Sleep(2000); /*simulating slow connection*/
/*Do something with object person*/
return Json(new {msg="Successfully added "+person.Name });
}
<script type="text/javascript">
function send() {
var person = {
name: $("#id-name").val(),
address:$("#id-address").val(),
phone:$("#id-phone").val()
}
$('#target').html('sending..');
$.ajax({
url: '/test/PersonSubmit',
type: 'post',
dataType: 'json',
contentType: 'application/json',
success: function (data) {
$('#target').html(data.msg);
},
data: JSON.stringify(person)
});
}
</script>
The answer to your question is actually two-fold. First of all you need to specify what you intend to do with the rendered HTML: save it to a new PDF file, or use it within another rendering context (i.e. add it to some other document you are generating).
The former is relatively easily accomplished using the Flying Saucer framework, which can be found here: https://github.com/flyingsaucerproject/flyingsaucer
The latter is actually a much more comprehensive problem that needs to be categorized further.
Using iText you won't be able to (trivially, at least) combine iText elements (i.e. Paragraph
, Phrase
, Chunk
and so on) with the generated HTML. You can hack your way out of this by using the ContentByte
's addTemplate
method and generating the HTML to this template.
If you on the other hand want to stamp the generated HTML with something like watermarks, dates or the like, you can do this using iText.
So bottom line: You can't trivially integrate the rendered HTML in other pdf generating contexts, but you can render HTML directly to a blank PDF document.
You can password protect SQLite3 DB. For the first time before doing any operations, set password as follows.
SQLiteConnection conn = new SQLiteConnection("Data Source=MyDatabase.sqlite;Version=3;");
conn.SetPassword("password");
conn.open();
then next time you can access it like
conn = new SQLiteConnection("Data Source=MyDatabase.sqlite;Version=3;Password=password;");
conn.Open();
This wont allow any GUI editor to view Your data.
Later if you wish to change the password, use conn.ChangePassword("new_password");
To reset or remove password, use conn.ChangePassword(String.Empty);
The correct answer that worked for me on CentOS is
/etc/init.d/mysql restart
which is an init script and not /etc/init.d/mysqld restart, which is binary
The is in fact comment of @MrTux on the question which worked for me. It took quite a bit of my time hence posting it as answer.
you can use btnSubmit::before { margin-left: 20px; }
I came across the same problem, and found that easier way is to undock the developer tool's video to a separate window! (Using the right hand top corner toolbar button of developer tools window) and in the new window , simply say select all and copy and paste to excel!!
If you want to use it like list.count(2)
you have to implement it using an Implicit Class.
implicit class Count[T](list: List[T]) {
def count(n: T): Int = list.count(_ == n)
}
List(1,2,4,2,4,7,3,2,4).count(2) // returns 3
List(1,2,4,2,4,7,3,2,4).count(5) // returns 0
I use a swift extension like this:
extension UIWebView {
var htmlContent:String? {
return self.stringByEvaluatingJavaScript(from: "document.documentElement.outerHTML")
}
}
Best way for me is:
Or you can push newly created branch on remote and merge there (if you do it this way, at the end you need to pull from remote master)
You can use it as follows,
<td>
<input type="submit" name="save" class="noborder" id="save" value="Save" alt="Save"
tabindex="4" />
</td>
<td>
<input type="submit" name="publish" class="noborder" id="publish" value="Publish"
alt="Publish" tabindex="5" />
</td>
And in PHP,
<?php
if($_POST['save'])
{
//Save Code
}
else if($_POST['publish'])
{
//Publish Code
}
?>
You can use:
Resources.getSystem().getString(android.R.string.somecommonstuff)
... everywhere in your application, even in static constants declarations. Unfortunately, it supports the system resources only.
For local resources use this solution. It is not trivial, but it works.
run
ps -ef | grep name-related-to-process
above command will give all the details like pid, start time about the process.
like if you want all java realted process give java or if you have name of process place the name
This error occurs when the input variable type is wrong. You probably have written a formula in Cells(4 + i, 57)
that instead of =0
, the formula = ""
have used. So when running this error is displayed. Because empty string is not equal to zero.