C++98 doesn't provide a direct syntax for anything but zeroing (or for non-POD elements, value-initializing) the array. For that you just write C(): arr() {}
.
I thing Roger Pate is wrong about the alleged limitations of C++0x aggregate initialization, but I'm too lazy to look it up or check it out, and it doesn't matter, does it? EDIT: Roger was talking about "C++03", I misread it as "C++0x". Sorry, Roger. ?
A C++98 workaround for your current code is to wrap the array in a struct
and initialize it from a static constant of that type. The data has to reside somewhere anyway. Off the cuff it can look like this:
class C
{
public:
C() : arr( arrData ) {}
private:
struct Arr{ int elem[3]; };
Arr arr;
static Arr const arrData;
};
C::Arr const C::arrData = {{1, 2, 3}};
Well, if you are going to iterate anyhow, why don't use the simplest method of all, df['Column'].values[i]
df['Column'] = ''
for i in range(len(df)):
df['Column'].values[i] = something/update/new_value
Or if you want to compare the new values with old or anything like that, why not store it in a list and then append in the end.
mylist, df['Column'] = [], ''
for <condition>:
mylist.append(something/update/new_value)
df['Column'] = mylist
Fedora or Centos distro check your selinux and firewalld in my case firewalld prevented the connection:
Selinux: $sestatus SELinux status: enabled SELinuxfs mount: /sys/fs/selinux SELinux root directory: /etc/selinux Loaded policy name: targeted Current mode: {{checkmode}} Mode from config file: {{checkconfig}} Policy MLS status: enabled Policy deny_unknown status: allowed Max kernel policy version: 30 Firewalld status: $systemctl status firewalld
Well, just uninstall WAMP 64-bit and go with the 32-bit version. It worked in my case.
Get No of Days between two days
DECLARE @date1 DATE='2015-01-01',
@date2 DATE='2019-01-01',
@Total int=null
SET @Total=(SELECT DATEDIFF(DAY, @date1, @date2))
PRINT @Total
You could use the re.sub() method to replace anything not "filelike". But in effect, every character could be valid; so there are no prebuilt functions (I believe), to get it done.
import re
str = "File!name?.txt"
f = open(os.path.join("/tmp", re.sub('[^-a-zA-Z0-9_.() ]+', '', str))
Would result in a filehandle to /tmp/filename.txt.
I agree with thomaux that the initialization type checking error is a TypeScript bug. However, I still wanted to find a way to declare and initialize a Dictionary in a single statement with correct type checking. This implementation is longer, however it adds additional functionality such as a containsKey(key: string)
and remove(key: string)
method. I suspect that this could be simplified once generics are available in the 0.9 release.
First we declare the base Dictionary class and Interface. The interface is required for the indexer because classes cannot implement them.
interface IDictionary {
add(key: string, value: any): void;
remove(key: string): void;
containsKey(key: string): bool;
keys(): string[];
values(): any[];
}
class Dictionary {
_keys: string[] = new string[];
_values: any[] = new any[];
constructor(init: { key: string; value: any; }[]) {
for (var x = 0; x < init.length; x++) {
this[init[x].key] = init[x].value;
this._keys.push(init[x].key);
this._values.push(init[x].value);
}
}
add(key: string, value: any) {
this[key] = value;
this._keys.push(key);
this._values.push(value);
}
remove(key: string) {
var index = this._keys.indexOf(key, 0);
this._keys.splice(index, 1);
this._values.splice(index, 1);
delete this[key];
}
keys(): string[] {
return this._keys;
}
values(): any[] {
return this._values;
}
containsKey(key: string) {
if (typeof this[key] === "undefined") {
return false;
}
return true;
}
toLookup(): IDictionary {
return this;
}
}
Now we declare the Person specific type and Dictionary/Dictionary interface. In the PersonDictionary note how we override values()
and toLookup()
to return the correct types.
interface IPerson {
firstName: string;
lastName: string;
}
interface IPersonDictionary extends IDictionary {
[index: string]: IPerson;
values(): IPerson[];
}
class PersonDictionary extends Dictionary {
constructor(init: { key: string; value: IPerson; }[]) {
super(init);
}
values(): IPerson[]{
return this._values;
}
toLookup(): IPersonDictionary {
return this;
}
}
And here is a simple initialization and usage example:
var persons = new PersonDictionary([
{ key: "p1", value: { firstName: "F1", lastName: "L2" } },
{ key: "p2", value: { firstName: "F2", lastName: "L2" } },
{ key: "p3", value: { firstName: "F3", lastName: "L3" } }
]).toLookup();
alert(persons["p1"].firstName + " " + persons["p1"].lastName);
// alert: F1 L2
persons.remove("p2");
if (!persons.containsKey("p2")) {
alert("Key no longer exists");
// alert: Key no longer exists
}
alert(persons.keys().join(", "));
// alert: p1, p3
Sorry late to the party, but here is mine - cater for table with a schema and funny column and table names. Yes I had some of them.
SELECT
'ALTER TABLE [' + TABLE_SCHEMA + '].[' + TABLE_NAME
+ '] ALTER COLUMN [' + COLUMN_NAME + '] ' + DATA_TYPE
+ '(' + CAST(CHARACTER_MAXIMUM_LENGTH AS nvarchar(100))
+ ') COLLATE ' + 'Latin1_General_CI_AS'
+ CASE WHEN IS_NULLABLE = 'YES' THEN ' NULL' ELSE ' NOT NULL' END
FROM
INFORMATION_SCHEMA.COLUMNS
WHERE
DATA_TYPE like '%char'
There are lots of good answers here, but there is also something i'd like to add:
Putting it all together:
REGEX
doesn't validate values (like "2010-19-19") SimpleDateFormat
does not check format ("2010-1-2", "1-0002-003" are accepted) it's necessary to use both to validate format and value:
public static boolean isValid(String text) {
if (text == null || !text.matches("\\d{4}-[01]\\d-[0-3]\\d"))
return false;
SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd");
df.setLenient(false);
try {
df.parse(text);
return true;
} catch (ParseException ex) {
return false;
}
}
private static final ThreadLocal<SimpleDateFormat> format = new ThreadLocal<SimpleDateFormat>() {
@Override
protected SimpleDateFormat initialValue() {
SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd");
df.setLenient(false);
System.out.println("created");
return df;
}
};
public static boolean isValid(String text) {
if (text == null || !text.matches("\\d{4}-[01]\\d-[0-3]\\d"))
return false;
try {
format.get().parse(text);
return true;
} catch (ParseException ex) {
return false;
}
}
(same can be done for a Matcher, that also is not thread safe)
This is everything you need to know:
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
void main() {
SystemChrome.setSystemUIOverlayStyle(SystemUiOverlayStyle(
systemNavigationBarColor: Colors.amber, // navigation bar color
statusBarColor: Colors.white, // status bar color
statusBarIconBrightness: Brightness.dark, // status bar icon color
systemNavigationBarIconBrightness: Brightness.dark, // color of navigation controls
));
runApp(MyApp());
}
I have a similar answer for asynchronous preloading images via JS. Loading them dynamically is the same as loading them normally. they will cache.
as for caching, you can't control the browser but you can set it via server. if you need to load a really fresh resource on demand, you can use the cache buster technique to force load a fresh resource.
I think it's well explained here -- quoting just the key sentences of the long article:
The general concept behind a token-based authentication system is simple. Allow users to enter their username and password in order to obtain a token which allows them to fetch a specific resource - without using their username and password. Once their token has been obtained, the user can offer the token - which offers access to a specific resource for a time period - to the remote site.
In other words: add one level of indirection for authentication -- instead of having to authenticate with username and password for each protected resource, the user authenticates that way once (within a session of limited duration), obtains a time-limited token in return, and uses that token for further authentication during the session.
Advantages are many -- e.g., the user could pass the token, once they've obtained it, on to some other automated system which they're willing to trust for a limited time and a limited set of resources, but would not be willing to trust with their username and password (i.e., with every resource they're allowed to access, forevermore or at least until they change their password).
If anything is still unclear, please edit your question to clarify WHAT isn't 100% clear to you, and I'm sure we can help you further.
I had the same problem but with an other cause. The solution was to deactivate Avira Browser Protection (in german Browser-Schutz). I took the solusion from m2e cannot transfer metadata from nexus, but maven command line can. It can be activated again ones maven has the needed plugin.
SET GLOBAL auto_increment_offset=1;
SET GLOBAL auto_increment_increment=5;
auto_increment_offset: interval between successive column values
auto_increment_offset: determines the starting point for the AUTO_INCREMENT column value. The default value is 1.
Right now with using Spring-Boot 2.0.4 - { } won't work.
@RequestMapping
still has String[] as a value parameter, so declaration looks like this:
@RequestMapping(value=["/","/index","/login","/home"], method = RequestMethod.GET)
** Update - Works With Spring-Boot 2.2**
@RequestMapping(value={"/","/index","/login","/home"}, method = RequestMethod.GET)
There's no reason for the {} command not to work. The semi-obvious questions are:
You are sure that the product is actually installed! There's something in ARP/Programs&Features.
The original install is in fact visible in the current context. It looks as if it might have been a per-user install, and if you are logged in as somebody else now then it won't know about it - you'd need to log in under the same account as the original install.
If the \windows\installer directory was damaged the cached file would be missing, and that's used to do the uninstall.
box-shadow: inset 1px 2000px rgba(208, 208, 208, 0.54);
Use titleLabel
instead. The font
property is deprecated in iOS 3.0. It also does not work in Objective-C. titleLabel
is label used for showing title on UIButton
.
myButton.titleLabel?.font = UIFont(name: YourfontName, size: 20)
However, while setting title text you should only use setTitle:forControlState:
. Do not use titleLabel
to set any text for title directly.
try the below code, it will help you get the GET parameters from url . for more details.
var url_string = window.location.href; // www.test.com?filename=test
var url = new URL(url_string);
var paramValue = url.searchParams.get("filename");
alert(paramValue)
In languages that support regular expressions with non-capturing groups:
((?:[^/]*/)*)(.*)
I'll explain the gnarly regex by exploding it...
(
(?:
[^/]*
/
)
*
)
(.*)
What the parts mean:
( -- capture group 1 starts
(?: -- non-capturing group starts
[^/]* -- greedily match as many non-directory separators as possible
/ -- match a single directory-separator character
) -- non-capturing group ends
* -- repeat the non-capturing group zero-or-more times
) -- capture group 1 ends
(.*) -- capture all remaining characters in group 2
To test the regular expression, I used the following Perl script...
#!/usr/bin/perl -w
use strict;
use warnings;
sub test {
my $str = shift;
my $testname = shift;
$str =~ m#((?:[^/]*/)*)(.*)#;
print "$str -- $testname\n";
print " 1: $1\n";
print " 2: $2\n\n";
}
test('/var/log/xyz/10032008.log', 'absolute path');
test('var/log/xyz/10032008.log', 'relative path');
test('10032008.log', 'filename-only');
test('/10032008.log', 'file directly under root');
The output of the script...
/var/log/xyz/10032008.log -- absolute path
1: /var/log/xyz/
2: 10032008.log
var/log/xyz/10032008.log -- relative path
1: var/log/xyz/
2: 10032008.log
10032008.log -- filename-only
1:
2: 10032008.log
/10032008.log -- file directly under root
1: /
2: 10032008.log
$('#divID').css("background-image", "url(/myimage.jpg)");
Should do the trick, just hook it up in a click event on the element
$('#divID').click(function()
{
// do my image switching logic here.
});
ANT for example - source code browsable online: http://svn.apache.org/viewvc/ant/core/trunk/src/main/org/apache/tools/ant/DefaultLogger.java?view=co
To choose other files start from: http://svn.apache.org/viewvc/ant/core/trunk/src/main/org/apache/tools/ant/?pathrev=761528
You can use calc
to position element relative to center. For example if you want to position element 200px
right from the center .. you can do this :
#your_element{
position:absolute;
left: calc(50% + 200px);
}
When you use signs +
and -
you must have one blank space between sign and number, but when you use signs *
and /
there is no need for blank space.
If you're not doing the else, why not do:
if (x==2) doSomething();
In addition to the ?ShiftU/CtrlShiftU solution, you can also add a link quickly by doing the following:
I couldn't find it documented anywhere, but it works, and seems very handy.
Have puzzled over this whilst developing a quick prototype web app under iOS4.2 (dev build). Solution is actually quite simple. Note that you can't seem to already have the tag in your HTML page, you actually need to insert the tag into the document dynamically (note this example uses Prototype 1.7 for some extra Javascript snazziness):
this.soundFile = new Element("audio", {id: "audio-1", src: "audio-1.mp3", controls: ""});
document.body.appendChild(this.soundFile);
this.soundFile.load();
this.soundFile.play();
As you've not set a controller, there shouldn't be any need to do anything tricksy with CSS to hide it / position it off-screen.
This seems to work perfectly.
I don't know of any full Chrome component, but you could use WebKit, which is the rendering engine that Chrome uses. The Mono project made WebKit Sharp, which might work for you.
<label for="fusk">dsfdsfsd</label>
<input id="fusk" type="file" name="photo" style="display: none;">
why not? ^_^
See the example here
<?php
$items = array();
$count = 0;
foreach($group_membership as $i => $username) {
$items[$count++] = $username;
}
print_r($items);
?>
max-length
is used for input
elements. Use text-overflow
property of CSS.
.claimedRight {
display:block; width: 250px;
white-space: nowrap;
overflow: hidden;
text-overflow: ellipsis;
}
Including the header afxwin.h
signalizes use of MFC. The following instructions (based on those on CodeProject.com) could help to get MFC code compiling:
Download and install the Windows Driver Kit.
Select menu Tools > Options… > Projects and Solutions > VC++ Directories.
In the drop-down menu Show directories for select Include files.
Add the following paths (replace $(WDK_directory)
with the directory where you installed Windows Driver Kit in the first step):
$(WDK_directory)\inc\mfc42
$(WDK_directory)\inc\atl30
In the drop-down menu Show directories for select Library files and add (replace $(WDK_directory)
like before):
$(WDK_directory)\lib\mfc\i386
$(WDK_directory)\lib\atl\i386
In the $(WDK_directory)\inc\mfc42\afxwin.inl
file, edit the following lines (starting from 1033):
_AFXWIN_INLINE CMenu::operator==(const CMenu& menu) const
{ return ((HMENU) menu) == m_hMenu; }
_AFXWIN_INLINE CMenu::operator!=(const CMenu& menu) const
{ return ((HMENU) menu) != m_hMenu; }
to
_AFXWIN_INLINE BOOL CMenu::operator==(const CMenu& menu) const
{ return ((HMENU) menu) == m_hMenu; }
_AFXWIN_INLINE BOOL CMenu::operator!=(const CMenu& menu) const
{ return ((HMENU) menu) != m_hMenu; }
In other words, add BOOL
after _AFXWIN_INLINE
.
You can target that div from your stylesheet in a number of ways.
Simply use
.col-md-6:first-child {
background-color: blue;
}
Another way is to assign a class to one div and then apply the style to that class.
<div class="col-md-6 blue"></div>
.blue {
background-color: blue;
}
There are also inline styles.
<div class="col-md-6" style="background-color: blue"></div>
Your example code works fine to me. I'm not sure if I undestand what you intend to do, but if you want a blue background on the second div just remove the bg-primary
class from the section and add you custom class to the div.
.blue {_x000D_
background-color: blue;_x000D_
}
_x000D_
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet"/>_x000D_
_x000D_
<section id="about">_x000D_
<div class="container">_x000D_
<div class="row">_x000D_
<!-- Columns are always 50% wide, on mobile and desktop -->_x000D_
<div class="col-xs-6">_x000D_
<h2 class="section-heading text-center">Title</h2>_x000D_
<p class="text-faded text-center">.col-md-6</p>_x000D_
</div>_x000D_
<div class="col-xs-6 blue">_x000D_
<h2 class="section-heading text-center">Title</h2>_x000D_
<p class="text-faded text-center">.col-md-6</p>_x000D_
</div>_x000D_
</div>_x000D_
</div>_x000D_
</section>
_x000D_
I read an embedded resource text file use:
/// <summary>
/// Converts to generic list a byte array
/// </summary>
/// <param name="content">byte array (embedded resource)</param>
/// <returns>generic list of strings</returns>
private List<string> GetLines(byte[] content)
{
string s = Encoding.Default.GetString(content, 0, content.Length - 1);
return new List<string>(s.Split(new[] { Environment.NewLine }, StringSplitOptions.None));
}
Sample:
var template = GetLines(Properties.Resources.LasTemplate /* resource name */);
template.ForEach(ln =>
{
Debug.WriteLine(ln);
});
I have been searching for a solution for this and found it today. Here is how you can do it.
Open Oracle SQL Developer Query Builder
Run the query
Right click on result set and export
That's because you want @selector(lowercaseString)
, not @selector(lowercaseString:)
. There's a subtle difference: the second one implies a parameter (note the colon at the end), but - [NSString lowercaseString]
does not take a parameter.
To add my 2 cents, the exception can occur even if you call your code through System.Windows.Threading.Dispatcher.CurrentDispatcher.Invoke()
.
The point is that you have to call Invoke()
of the Dispatcher
of the control that you're trying to access, which in some cases may not be the same as System.Windows.Threading.Dispatcher.CurrentDispatcher
. So instead you should use YourControl.Dispatcher.Invoke()
to be safe. I was banging my head for a couple of hours before I realized this.
For future readers, it looks like this has changed in the newer versions of .NET (4.0 and above). Now you no longer have to worry about the correct dispatcher when updating UI-backing properties in your VM. WPF engine will marshal cross-thread calls on the correct UI thread. See more details here. Thanks to @aaronburro for the info and link. You may also want to read our conversation below in comments.
This is similar to one of the answers but in different way :
scala> val x = List(1,2,3)
x: List[Int] = List(1, 2, 3)
scala> val y = x ::: 4 :: Nil
y: List[Int] = List(1, 2, 3, 4)
display: inline-block
is your friend you just need all three parts of the construct - before, the "block", after - to be one, then you can vertically align them all to the middle:
(it looks like your picture anyway ;))
CSS:
p, div {
display: inline-block;
vertical-align: middle;
}
p, div {
display: inline !ie7; /* hack for IE7 and below */
}
table {
background: #000;
color: #fff;
font-size: 16px;
font-weight: bold; margin: 0 10px;
}
td {
padding: 5px;
text-align: center;
}
HTML:
<p>some text</p>
<div>
<table summary="">
<tr><td>A</td></tr>
<tr><td>B</td></tr>
<tr><td>C</td></tr>
<tr><td>D</td></tr>
</table>
</div>
<p>continues afterwards</p>
Suppose you want to set a pop-up text box for clicking a button lets say bt whose id is button, then code using Toast will somewhat look like this:
Button bt;
bt = (Button) findViewById(R.id.button);
bt.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(getApplicationContext(),"The text you want to display",Toast.LENGTH_LONG)
}
For timing operation you should use Handler.
If you need to run a background service the AlarmManager is the way to go.
Found the solution.
In the parent I declare a new instance of the ChildClass() then bind the event handler in that class to the local method in the parent
In the child class I add a public event handler:
public EventHandler UpdateProgress;
In the parent I create a new instance of this child class then bind the local parent event to the public
eventhandler
in the child
ChildClass child = new ChildClass();
child.UpdateProgress += this.MyMethod;
child.LoadData(this.MyDataTable);
Then in the LoadData()
of the child class I can call
private LoadData() {
this.OnMyMethod();
}
Where OnMyMethod
is:
public void OnMyMethod()
{
// has the event handler been assigned?
if (this.UpdateProgress!= null)
{
// raise the event
this.UpdateProgress(this, new EventArgs());
}
}
This runs the event in the parent class
The error message is pretty straightforward: getComputedStyle expects an Element as its first argument, and something else was passed to it.
If what you are really asking for is help with debugging your skin, you should make more of an effort to isolate the error.
Use it by this Method:
str.encode().decode()
sentence.sub! 'Robert', 'Joe'
Won't cause an exception if the replaced word isn't in the sentence (the []=
variant will).
The above replaces only the first instance of "Robert".
To replace all instances use gsub
/gsub!
(ie. "global substitution"):
sentence.gsub! 'Robert', 'Joe'
The above will replace all instances of Robert with Joe.
I found something that worked for me. When I wrote my comment to the OP I had failed to check the system config file:
git config --system -l
shows a
credential.helper=!github --credentials
line. I unset it with
git config --system --unset credential.helper
and now the credentials are forgotten.
Use the createFromFormat
method:
$start_date = DateTime::createFromFormat("U", $dbResult->db_timestamp);
UPDATE
I now recommend the use of Carbon
Here's a quicker way than multi-layer menus without resorting to plug-ins:
Use the Quick Access tool at the upper left corner.
Type in "font", then, from the list that drops down, click on the link for "Preferences->Colors and Fonts->General->Appearance".
One click replaces the 4 needed to get there through menus. I do it so often, my Quick Access tool pulls it up as a previous choice right at the top of the list so I can just type "font" with a tap on the enter key and Boom!, I'm there.
If you want a keyboard shortcut, Ctrl+3 sets the focus to the Quick Access tool. Better yet, this even automatically brings up a list with your previous choices. The last one you chose will be on top, in which case a simple Ctrl+3 followed by enter would bring you straight there! I use this all the time to make it bigger during long typing or reading sessions to ease eye strain, or to make it smaller if I need more text on the screen at one time to make it easier to find something.
It's not quite as nice as zooming with the scroll wheel, but it's a lot better than navigating through the menus every time!
Target:
customizing all back button on UINavigationBar
to an white icon
Steps: 1. in "didFinishLaunchingWithOptions" method of AppDelete:
UIImage *backBtnIcon = [UIImage imageNamed:@"navBackBtn"];
if (SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(@"7.0")) {
[UINavigationBar appearance].tintColor = [UIColor whiteColor];
[UINavigationBar appearance].backIndicatorImage = backBtnIcon;
[UINavigationBar appearance].backIndicatorTransitionMaskImage = backBtnIcon;
}else{
UIImage *backButtonImage = [backBtnIcon resizableImageWithCapInsets:UIEdgeInsetsMake(0, backBtnIcon.size.width - 1, 0, 0)];
[[UIBarButtonItem appearance] setBackButtonBackgroundImage:backButtonImage forState:UIControlStateNormal barMetrics:UIBarMetricsDefault];
[[UIBarButtonItem appearance] setBackButtonTitlePositionAdjustment:UIOffsetMake(0, -backButtonImage.size.height*2) forBarMetrics:UIBarMetricsDefault];
}
2.in the viewDidLoad
method of the common super ViewController
class:
if (SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(@"7.0")) {
UIBarButtonItem *backItem = [[UIBarButtonItem alloc] initWithTitle:@""
style:UIBarButtonItemStylePlain
target:nil
action:nil];
[self.navigationItem setBackBarButtonItem:backItem];
}else{
//do nothing
}
this is possible with jQuery $.ajax()
method
$.ajax(serverUrl, {
type: OutageViewModel.Id() == 0 ? "POST" : "PUT",
data: dataToSave,
statusCode: {
200: function (response) {
alert('1');
AfterSavedAll();
},
201: function (response) {
alert('1');
AfterSavedAll();
},
400: function (response) {
alert('1');
bootbox.alert('<span style="color:Red;">Error While Saving Outage Entry Please Check</span>', function () { });
},
404: function (response) {
alert('1');
bootbox.alert('<span style="color:Red;">Error While Saving Outage Entry Please Check</span>', function () { });
}
}, success: function () {
alert('1');
},
});
Josh's comments are spot on. If you are not super familiar with critical values I'd suggest playing with qt, reading the manual (?qt
) in conjunction with looking at a look up table (LINK). When I first moved from SPSS to R I created a function that made critical t value look up pretty easy (I'd never use this now as it takes too much time and with the p values that are generally provided in the output it's a moot point). Here's the code for that:
critical.t <- function(){
cat("\n","\bEnter Alpha Level","\n")
alpha<-scan(n=1,what = double(0),quiet=T)
cat("\n","\b1 Tailed or 2 Tailed:\nEnter either 1 or 2","\n")
tt <- scan(n=1,what = double(0),quiet=T)
cat("\n","\bEnter Number of Observations","\n")
n <- scan(n=1,what = double(0),quiet=T)
cat("\n\nCritical Value =",qt(1-(alpha/tt), n-2), "\n")
}
critical.t()
Don't even call them DTOs. They're called Models....Period. Models never have behavior. I don't know who came up with this dumb term DTO but it must be a .NET thing is all I can figure. Think of view models in MVC, same dam** thing, models are used to transfer state between layers server side or over the wire period, they are all models. Properties with data. These are models you pass ove the wire. Models, Models Models. That's it.
I wish the stupid term DTO would go away from our vocabulary.
If you use Pycharm, renaming an app is very easy with refactoring(Shift
+F6
default) for all project files.
But make sure you delete the __pycache__
folders in the project directory & its sub-directories. Also be careful as it also renames comments too which you can exclude in the refactor preview window it will show you.
And you'll have to rename OldNameConfig(AppConfig): in apps.py
of your renamed app in addition.
If you do not want to lose data of your database, you'll have to manually do it with query in database like the aforementioned answer.
You can also use:
img{
filter:grayscale(100%);
}
img:hover{
filter:none;
}
This comment from verybadbug under question helped me:
ln -s /etc/apache2/mods-available/rewrite.load /etc/apache2/mods-enabled/rewrite.load
After that we need restart Apache:
sudo service apache2 restart
I wanted to get a file's modification date in YYYYMMDDHHMMSS
format. Here is how I did it:
date -d @$( stat -c %Y myfile.css ) +%Y%m%d%H%M%S
Explanation. It's the combination of these commands:
stat -c %Y myfile.css # Get the modification date as a timestamp
date -d @1503989421 +%Y%m%d%H%M%S # Convert the date (from timestamp)
This page writes well about the protected & default access modifier
.... Protected: Protected access modifier is the a little tricky and you can say is a superset of the default access modifier. Protected members are same as the default members as far as the access in the same package is concerned. The difference is that, the protected members are also accessible to the subclasses of the class in which the member is declared which are outside the package in which the parent class is present.
But these protected members are “accessible outside the package only through inheritance“. i.e you can access a protected member of a class in its subclass present in some other package directly as if the member is present in the subclass itself. But that protected member will not be accessible in the subclass outside the package by using parent class’s reference. ....
I found the better solution. This can be achieved through RegEx:
if (str.matches("val1|val2|val3")) {
// remaining code
}
For case insensitive matching:
if (str.matches("(?i)val1|val2|val3")) {
// remaining code
}
You can use the built-in encryption of the sqlite .net provider (System.Data.SQLite). See more details at http://web.archive.org/web/20070813071554/http://sqlite.phxsoftware.com/forums/t/130.aspx
To encrypt an existing unencrypted database, or to change the password of an encrypted database, open the database and then use the ChangePassword() function of SQLiteConnection:
// Opens an unencrypted database
SQLiteConnection cnn = new SQLiteConnection("Data Source=c:\\test.db3");
cnn.Open();
// Encrypts the database. The connection remains valid and usable afterwards.
cnn.ChangePassword("mypassword");
To decrypt an existing encrypted database call ChangePassword()
with a NULL
or ""
password:
// Opens an encrypted database
SQLiteConnection cnn = new SQLiteConnection("Data Source=c:\\test.db3;Password=mypassword");
cnn.Open();
// Removes the encryption on an encrypted database.
cnn.ChangePassword(null);
To open an existing encrypted database, or to create a new encrypted database, specify a password in the ConnectionString
as shown in the previous example, or call the SetPassword()
function before opening a new SQLiteConnection
. Passwords specified in the ConnectionString
must be cleartext, but passwords supplied in the SetPassword()
function may be binary byte arrays.
// Opens an encrypted database by calling SetPassword()
SQLiteConnection cnn = new SQLiteConnection("Data Source=c:\\test.db3");
cnn.SetPassword(new byte[] { 0xFF, 0xEE, 0xDD, 0x10, 0x20, 0x30 });
cnn.Open();
// The connection is now usable
By default, the ATTACH keyword will use the same encryption key as the main database when attaching another database file to an existing connection. To change this behavior, you use the KEY modifier as follows:
If you are attaching an encrypted database using a cleartext password:
// Attach to a database using a different key than the main database
SQLiteConnection cnn = new SQLiteConnection("Data Source=c:\\test.db3");
cnn.Open();
cmd = new SQLiteCommand("ATTACH DATABASE 'c:\\pwd.db3' AS [Protected] KEY 'mypassword'", cnn);
cmd.ExecuteNonQuery();
To attach an encrypted database using a binary password:
// Attach to a database encrypted with a binary key
SQLiteConnection cnn = new SQLiteConnection("Data Source=c:\\test.db3");
cnn.Open();
cmd = new SQLiteCommand("ATTACH DATABASE 'c:\\pwd.db3' AS [Protected] KEY X'FFEEDD102030'", cnn);
cmd.ExecuteNonQuery();
void 0
mean?void
[MDN] is a prefix keyword that takes one argument and always returns undefined
.
Examples
void 0
void (0)
void "hello"
void (new Date())
//all will return undefined
It seems pretty useless, doesn't it? If it always returns undefined
, what's wrong with just using undefined
itself?
In a perfect world we would be able to safely just use undefined
: it's much simpler and easier to understand than void 0
. But in case you've never noticed before, this isn't a perfect world, especially when it comes to Javascript.
The problem with using undefined
was that undefined
is not a reserved word (it is actually a property of the global object [wtfjs]). That is, undefined
is a permissible variable name, so you could assign a new value to it at your own caprice.
alert(undefined); //alerts "undefined"
var undefined = "new value";
alert(undefined) // alerts "new value"
Note: This is no longer a problem in any environment that supports ECMAScript 5 or newer (i.e. in practice everywhere but IE 8), which defines the undefined
property of the global object as read-only (so it is only possible to shadow the variable in your own local scope). However, this information is still useful for backwards-compatibility purposes.
alert(window.hasOwnProperty('undefined')); // alerts "true"
alert(window.undefined); // alerts "undefined"
alert(undefined === window.undefined); // alerts "true"
var undefined = "new value";
alert(undefined); // alerts "new value"
alert(undefined === window.undefined); // alerts "false"
void
, on the other hand, cannot be overidden. void 0
will always return undefined
. undefined
, on the other hand, can be whatever Mr. Javascript decides he wants it to be.
void 0
, specifically?Why should we use void 0
? What's so special about 0
? Couldn't we just as easily use 1
, or 42
, or 1000000
or "Hello, world!"
?
And the answer is, yes, we could, and it would work just as well. The only benefit of passing in 0
instead of some other argument is that 0
is short and idiomatic.
Although undefined
can generally be trusted in modern JavaScript environments, there is one trivial advantage of void 0
: it's shorter. The difference is not enough to worry about when writing code but it can add up enough over large code bases that most code minifiers replace undefined
with void 0
to reduce the number of bytes sent to the browser.
You could create triggers to solve this. Here is a tutorial to do so (archived link).
Setting constraints and rules in the database is better than writing special code to handle the same task since it will prevent another developer from writing a different query that bypasses all of the special code and could leave your database with poor data integrity.
For a long time I was copying info to another table using a script since MySQL didn’t support triggers at the time. I have now found this trigger to be more effective at keeping track of everything.
This trigger will copy an old value to a history table if it is changed when someone edits a row.
Editor ID
andlast mod
are stored in the original table every time someone edits that row; the time corresponds to when it was changed to its current form.
DROP TRIGGER IF EXISTS history_trigger $$
CREATE TRIGGER history_trigger
BEFORE UPDATE ON clients
FOR EACH ROW
BEGIN
IF OLD.first_name != NEW.first_name
THEN
INSERT INTO history_clients
(
client_id ,
col ,
value ,
user_id ,
edit_time
)
VALUES
(
NEW.client_id,
'first_name',
NEW.first_name,
NEW.editor_id,
NEW.last_mod
);
END IF;
IF OLD.last_name != NEW.last_name
THEN
INSERT INTO history_clients
(
client_id ,
col ,
value ,
user_id ,
edit_time
)
VALUES
(
NEW.client_id,
'last_name',
NEW.last_name,
NEW.editor_id,
NEW.last_mod
);
END IF;
END;
$$
Another solution would be to keep an Revision field and update this field on save. You could decide that the max is the newest revision, or that 0 is the most recent row. That's up to you.
Had same error with code:
X509Certificate2 mycert = new X509Certificate2(@"C:\certificate.crt");
Solved by adding password:
X509Certificate2 mycert = new X509Certificate2(@"C:\certificate.crt", "password");
Since node 4.8.0 you are able to use the feature of ES6 called generator. You may follow this article for deeper concepts. But basically you can use generators and promises to get this job done. I'm using bluebird to promisify and manage the generator.
Your code should be fine like the example below.
const Promise = require('bluebird');
function* getResponse(query) {
const r = yield new Promise(resolve => myApi.exec('SomeCommand', resolve);
return r;
}
Promise.coroutine(getResponse)()
.then(response => console.log(response));
Some of you might find this useful. Just copy paste it to your page and you will get a sequence in which events are fired in the Chrome console (Ctrl + Shift + I).
$(document).on('pagebeforecreate',function(){console.log('pagebeforecreate');});
$(document).on('pagecreate',function(){console.log('pagecreate');});
$(document).on('pageinit',function(){console.log('pageinit');});
$(document).on('pagebeforehide',function(){console.log('pagebeforehide');});
$(document).on('pagebeforeshow',function(){console.log('pagebeforeshow');});
$(document).on('pageremove',function(){console.log('pageremove');});
$(document).on('pageshow',function(){console.log('pageshow');});
$(document).on('pagehide',function(){console.log('pagehide');});
$(window).load(function () {console.log("window loaded");});
$(window).unload(function () {console.log("window unloaded");});
$(function () {console.log('document ready');});
You are not going see unload in the console as it is fired when the page is being unloaded (when you move away from the page). Use it like this:
$(window).unload(function () { debugger; console.log("window unloaded");});
And you will see what I mean.
... ????
Alternatively, if you have a list of items you want to use...
var range = [46, 66, 90]
, widthRange=[]
, write=[];
widthRange[46] = { min:0, max:52 };
widthRange[66] = { min:52, max:70 };
widthRange[90] = { min:70, max:94 };
for(var x=0; x<range.length; x++){var key, wr;
key = range[x];
wr = widthRange[key] || false;
if(wr===false){continue;}
write.push(['key: #',key, ', min: ', wr.min, 'max:', wr.max].join(''));
}
Guide link: http://www.pip-installer.org/en/latest/installing.html#install-pip
Note: Make sure scripts path like this (C:\Python27\Scripts) is added int %PATH% environment variable as well.
Usually timestamp has no timezone.
% irb
> Time.now.to_i == Time.now.getutc.to_i
=> true
Function overloading is done when you want to have the same function with different parameters
void Print(string s);//Print string
void Print(int i);//Print integer
Function overriding is done to give a different meaning to the function in the base class
class Stream//A stream of bytes
{
public virtual void Read();//read bytes
}
class FileStream:Stream//derived class
{
public override void Read();//read bytes from a file
}
class NetworkStream:Stream//derived class
{
public override void Read();//read bytes from a network
}
I found a solution.
One just has to add the following code:
// Swift
textLabel.lineBreakMode = .ByWordWrapping // or NSLineBreakMode.ByWordWrapping
textLabel.numberOfLines = 0
// For Swift >= 3
textLabel.lineBreakMode = .byWordWrapping // notice the 'b' instead of 'B'
textLabel.numberOfLines = 0
// Objective-C
textLabel.lineBreakMode = NSLineBreakByWordWrapping;
textLabel.numberOfLines = 0;
// C# (Xamarin.iOS)
textLabel.LineBreakMode = UILineBreakMode.WordWrap;
textLabel.Lines = 0;
Restored old answer (for reference and devs willing to support iOS below 6.0):
textLabel.lineBreakMode = UILineBreakModeWordWrap;
textLabel.numberOfLines = 0;
On the side: both enum values yield to 0
anyway.
While alot of people mentioned using regex to strip html tags, there are a lot of downsides.
for example:
<p>hello world</p>I love you
Should be parsed to:
Hello world
I love you
Here's a snippet I came up with, you can cusomize it to your specific needs, and it works like a charm
import re
import html
def html2text(htm):
ret = html.unescape(htm)
ret = ret.translate({
8209: ord('-'),
8220: ord('"'),
8221: ord('"'),
160: ord(' '),
})
ret = re.sub(r"\s", " ", ret, flags = re.MULTILINE)
ret = re.sub("<br>|<br />|</p>|</div>|</h\d>", "\n", ret, flags = re.IGNORECASE)
ret = re.sub('<.*?>', ' ', ret, flags=re.DOTALL)
ret = re.sub(r" +", " ", ret)
return ret
Just to keep this up to date:
The current version of SQLDeveloper has an export tool (Tools > Database Export
) that will allow you to dump a schema to a file, with filters for object types, object names, table data etc.
It's a fair amount easier to set-up and use than exp
and imp
if you're used to working in a GUI environment, but not as versatile if you need to use it for scripting anything.
You can also simply use the HtmlString
class
@(new HtmlString(Model.Content))
You can also use Windows PowerShell with the following command:
if ([System.Diagnostics.EventLog]::SourceExists($source) -eq $false) {
[System.Diagnostics.EventLog]::CreateEventSource($source, "Application")
}
Make sure to check that the source does not exist before calling CreateEventSource, otherwise it will throw an exception.
For more info:
I had this problem in one legacy application that create prepared statement dynamically.
String firstName;
StringBuilder query =new StringBuilder("select id, name from employee where country_Code=1");
query.append("and name like '");
query.append(firstName + "' ");
query.append("and ssn=?");
PreparedStatement preparedStatement =new prepareStatement(query.toString());
when it try to set value for ssn, it was giving invalid column index error, and finally found out that it is caused by firstName having ' within; that disturb the syntax.
=IF(A2="Y","Male",IF(A2="N","Female",""))
The same, Server.UrlEncode()
calls HttpUtility.UrlEncode()
For people with only one IP address and multiple sites on one server, you can configure IIS to listen on a port other than 80
, e.g 8080
by setting the TCP port in the properties of each of its sites (including the default one).
In Apache, enable mod_proxy
and mod_proxy_http
, then add a catch-all VirtualHost (after all others) so that requests Apache isn't explicitly handling get "forwarded" on to IIS.
<VirtualHost *:80>
ServerName foo.bar
ServerAlias *
ProxyPreserveHost On
ProxyPass / http://127.0.0.1:8080/
</VirtualHost>
Now you can have Apache serve some sites and IIS serve others, with no visible difference to the user.
Edit: your IIS sites must not include their port number in any URLs within their responses, including headers.
Was trying to import a backup sql file but was getting the error; 1050 "Table already exists"
My setup was:
Solution:
You need to add the new line character \n
:
console.log('line one \nline two')
would display:
line one
line two
You could use the following query:
SELECT table1.id
FROM table1
LEFT JOIN table2
ON table1.id IN (table2.user_one, table2.user_two)
WHERE table2.user_one IS NULL;
Although, depending on your indexes on table2
you may find that two joins performs better:
SELECT table1.id
FROM table1
LEFT JOIN table2 AS t1
ON table1.id = t1.user_one
LEFT JOIN table2 AS t2
ON table1.id = t2.user_two
WHERE t1.user_one IS NULL
AND t2.user_two IS NULL;
In python, this is called "unpacking", and you can find a bit about it in the tutorial. The documentation of it sucks, I agree, especially because of how fantasically useful it is.
The new cv2
interface for Python integrates numpy arrays into the OpenCV framework, which makes operations much simpler as they are represented with simple multidimensional arrays. For example, your question would be answered with:
import cv2 # Not actually necessary if you just want to create an image.
import numpy as np
blank_image = np.zeros((height,width,3), np.uint8)
This initialises an RGB-image that is just black. Now, for example, if you wanted to set the left half of the image to blue and the right half to green , you could do so easily:
blank_image[:,0:width//2] = (255,0,0) # (B, G, R)
blank_image[:,width//2:width] = (0,255,0)
If you want to save yourself a lot of trouble in future, as well as having to ask questions such as this one, I would strongly recommend using the cv2
interface rather than the older cv
one. I made the change recently and have never looked back. You can read more about cv2
at the OpenCV Change Logs.
First of all, I don't really see why you would want an object having only ID and Version, and all other props to be nulls. However, here is some code which will do that for you (which doesn't use JPA Em, but normal Hibernate. I assume you can find the equivalence in JPA or simply obtain the Hibernate Session obj from the em delegate Accessing Hibernate Session from EJB using EntityManager ):
List<T> results = session.createCriteria(entityClazz)
.setProjection( Projections.projectionList()
.add( Property.forName("ID") )
.add( Property.forName("VERSION") )
)
.setResultTransformer(Transformers.aliasToBean(entityClazz);
.list();
This will return a list of Objects having their ID and Version set and all other props to null, as the aliasToBean transformer won't be able to find them. Again, I am uncertain I can think of a situation where I would want to do that.
This is a tricky question.
There a set of problems about file permissions. If you can do this at the command line
$ sudo chown myaccount /path/to/file
then you have a standard permissions problem. Make sure you own the file and have permission to modify the directory.
If you cannnot get permissions, then you have probably mounted a FAT-32 filesystem. If you ls -l
the file, and you find it is owned by root and a member of the "plugdev" group, then you are certain its the issue. FAT-32 permissions are set at the time of mounting, using the line of /etc/fstab file. You can set the uid/gid of all the files like this:
UUID=C14C-CE25 /big vfat utf8,umask=007,uid=1000,gid=1000 0 1
Also, note that the FAT-32 won't take symbolic links.
Wrote the whole thing up at http://www.charlesmerriam.com/blog/2009/12/operation-not-permitted-and-the-fat-32-system/
Edit 2018-05-28 I have changed the example to use Java 8's Time API:
LocalDate d1 = LocalDate.parse("2018-05-26", DateTimeFormatter.ISO_LOCAL_DATE);
LocalDate d2 = LocalDate.parse("2018-05-28", DateTimeFormatter.ISO_LOCAL_DATE);
Duration diff = Duration.between(d1.atStartOfDay(), d2.atStartOfDay());
long diffDays = diff.toDays();
In a UIView extension:
func addBlurredBackground(style: UIBlurEffect.Style) {
let blurEffect = UIBlurEffect(style: style)
let blurView = UIVisualEffectView(effect: blurEffect)
blurView.frame = self.frame
blurView.autoresizingMask = [.flexibleWidth, .flexibleHeight]
self.addSubview(blurView)
self.sendSubviewToBack(blurView)
}
with new version of mongodb, this issue got resolved.
e.Handled = (int)e.Key >= 43 || (int)e.Key <= 34;
in preview keydown event of textbox.
A couple of other ways than list-comp:
map(mydict.__getitem__, mykeys)
None
if key not found: map(mydict.get, mykeys)
Alternatively, using operator.itemgetter
can return a tuple:
from operator import itemgetter
myvalues = itemgetter(*mykeys)(mydict)
# use `list(...)` if list is required
Note: in Python3, map
returns an iterator rather than a list. Use list(map(...))
for a list.
Often when people are looking for "timezones", what will suffice is just "UTC offset". e.g., their server is in UTC+5 and they want to know that their client is running in UTC-8.
In plain old javascript (new Date()).getTimezoneOffset()/60
will return the current number of hours offset from UTC.
It's worth noting a possible "gotcha" in the sign of the getTimezoneOffset()
return value (from MDN docs):
The time-zone offset is the difference, in minutes, between UTC and local time. Note that this means that the offset is positive if the local timezone is behind UTC and negative if it is ahead. For example, for time zone UTC+10:00 (Australian Eastern Standard Time, Vladivostok Time, Chamorro Standard Time), -600 will be returned.
However, I recommend you use the day.js for time/date related Javascript code. In which case you can get an ISO 8601 formatted UTC offset by running:
> dayjs().format("Z")
"-08:00"
It probably bears mentioning that the client can easily falsify this information.
(Note: this answer originally recommended https://momentjs.com/, but dayjs is a more modern, smaller alternative.)
I know this is an old question but it does not yet appear to have an answer. I've duplicated this situation, but I'm writing the server app, so I've been able to establish what happens on the server side as well. The client sends the certificate when the server asks for it and if it has a reference to a real certificate in the s_client command line. My server application is set up to ask for a client certificate and to fail if one is not presented. Here is the command line I issue:
Yourhostname here -vvvvvvvvvv
s_client -connect <hostname>:443 -cert client.pem -key cckey.pem -CAfile rootcert.pem -cipher ALL:!ADH:!LOW:!EXP:!MD5:@STRENGTH -tls1 -state
When I leave out the "-cert client.pem" part of the command the handshake fails on the server side and the s_client command fails with an error reported. I still get the report "No client certificate CA names sent" but I think that has been answered here above.
The short answer then is that the server determines whether a certificate will be sent by the client under normal operating conditions (s_client is not normal) and the failure is due to the server not recognizing the CA in the certificate presented. I'm not familiar with many situations in which two-way authentication is done although it is required for my project.
You are clearly sending a certificate. The server is clearly rejecting it.
The missing information here is the exact manner in which the certs were created and the way in which the provider loaded the cert, but that is probably all wrapped up by now.
What I'll do which is very simple but waste memory is to map the values with a key and do the oposite to map the keys with a value making this:
private Map<Object, Object> team1 = new HashMap<Object, Object>();
it's important that you use <Object, Object>
so you can map keys:Value
and Value:Keys
like this
team1.put("United", 5);
team1.put(5, "United");
So if you use team1.get("United") = 5
and team1.get(5) = "United"
But if you use some specific method on one of the objects in the pairs I'll be better if you make another map:
private Map<String, Integer> team1 = new HashMap<String, Integer>();
private Map<Integer, String> team1Keys = new HashMap<Integer, String>();
and then
team1.put("United", 5);
team1Keys.put(5, "United");
and remember, keep it simple ;)
Check the following. I get it from W3Schools.
.alias { cursor: alias; }
.all-scroll { cursor: all-scroll; }
.auto { cursor: auto; }
.cell { cursor: cell; }
.context-menu { cursor: context-menu; }
.col-resize { cursor: col-resize; }
.copy { cursor: copy; }
.crosshair { cursor: crosshair; }
.default { cursor: default; }
.e-resize { cursor: e-resize; }
.ew-resize { cursor: ew-resize; }
.grab {
cursor: -webkit-grab;
cursor: grab;
}
.grabbing {
cursor: -webkit-grabbing;
cursor: grabbing;
}
.help { cursor: help; }
.move { cursor: move; }
.n-resize { cursor: n-resize; }
.ne-resize { cursor: ne-resize; }
.nesw-resize { cursor: nesw-resize; }
.ns-resize { cursor: ns-resize; }
.nw-resize { cursor: nw-resize; }
.nwse-resize { cursor: nwse-resize; }
.no-drop { cursor: no-drop; }
.none { cursor: none; }
.not-allowed { cursor: not-allowed; }
.pointer { cursor: pointer; }
.progress { cursor: progress; }
.row-resize { cursor: row-resize; }
.s-resize { cursor: s-resize; }
.se-resize { cursor: se-resize; }
.sw-resize { cursor: sw-resize; }
.text { cursor: text; }
.url { cursor: url(myBall.cur), auto; }
.w-resize { cursor: w-resize; }
.wait { cursor: wait; }
.zoom-in { cursor: zoom-in; }
.zoom-out { cursor: zoom-out; }
_x000D_
<!DOCTYPE html>
<html>
<body>
<h1>The cursor property</h1>
<p>Mouse over the words to change the mouse cursor.</p>
<p class="alias">alias</p>
<p class="all-scroll">all-scroll</p>
<p class="auto">auto</p>
<p class="cell">cell</p>
<p class="context-menu">context-menu</p>
<p class="col-resize">col-resize</p>
<p class="copy">copy</p>
<p class="crosshair">crosshair</p>
<p class="default">default</p>
<p class="e-resize">e-resize</p>
<p class="ew-resize">ew-resize</p>
<p class="grab">grab</p>
<p class="grabbing">grabbing</p>
<p class="help">help</p>
<p class="move">move</p>
<p class="n-resize">n-resize</p>
<p class="ne-resize">ne-resize</p>
<p class="nesw-resize">nesw-resize</p>
<p class="ns-resize">ns-resize</p>
<p class="nw-resize">nw-resize</p>
<p class="nwse-resize">nwse-resize</p>
<p class="no-drop">no-drop</p>
<p class="none">none</p>
<p class="not-allowed">not-allowed</p>
<p class="pointer">pointer</p>
<p class="progress">progress</p>
<p class="row-resize">row-resize</p>
<p class="s-resize">s-resize</p>
<p class="se-resize">se-resize</p>
<p class="sw-resize">sw-resize</p>
<p class="text">text</p>
<p class="url">url</p>
<p class="w-resize">w-resize</p>
<p class="wait">wait</p>
<p class="zoom-in">zoom-in</p>
<p class="zoom-out">zoom-out</p>
</body>
</html>
_x000D_
Just drop the option v
.
-v
is for verbose. If you don't use it then it won't display:
tar -zxf tmp.tar.gz -C ~/tmp1
Try:
<table>_x000D_
<tr><td>Key:</td><td id="key"></td></tr>_x000D_
<tr><td>Key Code:</td><td id="keyCode"></td></tr>_x000D_
<tr><td>Event Code:</td><td id="eventCode"></td></tr>_x000D_
</table>_x000D_
<script type="text/javascript">_x000D_
window.addEventListener("keydown", function (e) {_x000D_
//tested in IE/Chrome/Firefox_x000D_
document.getElementById("key").innerHTML = e.key;_x000D_
document.getElementById("keyCode").innerHTML = e.keyCode;_x000D_
document.getElementById("eventCode").innerHTML = e.code;_x000D_
})_x000D_
</script>
_x000D_
*Note: this works in "Run code snippet"
This website does the same as my code above: Keycode.info
As was stated in the comments to the original post, this seemed to be an issue with the python interpreter I was using for whatever reason, and not something wrong with the python scripts. I switched over from the WinPython bundle to the official python 3.6 from python.org and it worked just fine. thanks for the help everyone :)
You can try to use btn-sm, btn-xs and btn-lg classes like this:
.btn-xl {
padding: 10px 20px;
font-size: 20px;
border-radius: 10px;
}
You can make use of Bootstrap .btn-group-justified
css class. Or you can simply add:
.btn-xl {
padding: 10px 20px;
font-size: 20px;
border-radius: 10px;
width:50%; //Specify your width here
}
There are two ways to exit a method early (without quitting the program):
i) Use the return keyword.
ii) Throw an exception.
Exceptions should only be used for exceptional circumstances - when the method cannot continue and it cannot return a reasonable value that would make sense to the caller. Usually though you should just return when you are done.
If your method returns void then you can write return without a value:
return;
Citing the quote from Robertiano above again - because this is by far the most versatile and localization adaptive version. It deserves a full post!
Another option:
DecimalFormat df = new DecimalFormat();
DecimalFormatSymbols sfs = new DecimalFormatSymbols();
sfs.setDecimalSeparator(',');
df.setDecimalFormatSymbols(sfs);
double d = df.parse(number).doubleValue();
In GNU Awk 4.1.0 (released 2013) and later, it has the option of "inplace" file editing:
[...] The "inplace" extension, built using the new facility, can be used to simulate the GNU "
sed -i
" feature. [...]
Example usage:
$ gawk -i inplace '{ gsub(/foo/, "bar") }; { print }' file1 file2 file3
To keep the backup:
$ gawk -i inplace -v INPLACE_SUFFIX=.bak '{ gsub(/foo/, "bar") }
> { print }' file1 file2 file3
Though asynchronous style may be the nature of node.js and generally you should not do this, there are some times you want to do this.
I'm writing a handy script to check an API and want not to mess it up with callbacks.
Javascript cannot execute synchronous requests, but C libraries can.
This page should help - http://www.zedwood.com/article/103/bash-send-mail-with-an-attachment
It includes a script to send e-mail with a MIME attachment, ie with a HTML page and images included.
A little bit easier and it looks exactly like the button in the form. Just use the input and wrap the anchor tag around it.
<a href="#"><input type="button" value="Button Text"></a>
To sum it all up, the correct answer is :
select * from db where Date >= '20100401' (Format of date yyyymmdd)
This will avoid any problem with other language systems and will use the index.
Not a definite answer but too much to fit in comments:
I hypothesize they gave you a cert that either has a wrong issuer (although their server could use a more specific alert code for that) or a wrong subject. We know the cert matches your privatekey -- because both curl
and openssl client
paired them without complaining about a mismatch; but we don't actually know it matches their desired CA(s) -- because your curl uses openssl and openssl SSL client does NOT enforce that a configured client cert matches certreq.CAs.
Do openssl x509 <clientcert.pem -noout -subject -issuer
and the same on the cert from the test P12 that works. Do openssl s_client
(or check the one you did) and look under Acceptable client certificate CA names
; the name there or one of them should match (exactly!) the issuer(s) of your certs. If not, that's most likely your problem and you need to check with them you submitted your CSR to the correct place and in the correct way. Perhaps they have different regimes in different regions, or business lines, or test vs prod, or active vs pending, etc.
If the issuer of your cert does match desiredCAs, compare its subject to the working (test-P12) one: are they in similar format? are there any components in the working one not present in yours? If they allow it, try generating and submitting a new CSR with a subject name exactly the same as the test-P12 one, or as close as you can get, and see if that produces a cert that works better. (You don't have to generate a new key to do this, but if you choose to, keep track of which certs match which keys so you don't get them mixed up.) If that doesn't help look at the certificate extensions with openssl x509 <cert -noout -text
for any difference(s) that might reasonably be related to subject authorization, like KeyUsage, ExtendedKeyUsage, maybe Policy, maybe Constraints, maybe even something nonstandard.
If all else fails, ask the server operator(s) what their logs say about the problem, or if you have access look at the logs yourself.
Using the is
or as
operators is the correct way if you know the interface type at compile time and have an instance of the type you are testing. Something that no one else seems to have mentioned is Type.IsAssignableFrom
:
if( typeof(IMyInterface).IsAssignableFrom(someOtherType) )
{
}
I think this is much neater than looking through the array returned by GetInterfaces
and has the advantage of working for classes as well.
Why not just use NSMutableAttributedString?
let attributedString = NSMutableAttributedString(string: "Want to learn iOS? Just visit developer.apple.com!")
attributedString.addAttribute(.link, value: "https://developer.apple.com", range: NSRange(location: 30, length: 50))
myView.attributedText = attributedString
You can find more details here
var today = new Date(); _x000D_
_x000D_
var formattedtoday = today.getDate() + '-' + (today.getMonth() + 1) + '-' + today.getFullYear();_x000D_
_x000D_
alert(formattedtoday);
_x000D_
Try the following:
document.getElementById("successAndErrorMessages").innerHTML="someContent";
msdn link for detail : innerHTML Property
Check the installed version(s) of pg_dump:
find / -name pg_dump -type f 2>/dev/null
My output was:
/usr/pgsql-9.3/bin/pg_dump
/usr/bin/pg_dump
There are two versions installed. To update pg_dump with the newer version:
sudo ln -s /usr/pgsql-9.3/bin/pg_dump /usr/bin/pg_dump --force
This will create the symlink to the newer version.
If you want to check for local files first do:
@font-face {
font-family: 'Green Sans Web';
src:
local('Green Web'),
local('GreenWeb-Regular'),
url('GreenWeb.ttf');
}
There is a more elaborate description of what to do here.
The way to do was looking at the code in code/core/Mage/Catalog/Model/Resource/Category/Flat/Collection.php
at line 380 in Magento 1.7.2 on the function setPage($pageNum, $pageSize)
$collection = Mage::getModel('model')
->getCollection()
->setCurPage(2) // 2nd page
->setPageSize(10); // 10 elements per pages
I hope this will help someone.
Use it like this:
$("#searchField").focus(function() {
$(this).val("");
});
It has to work. Otherwise it probably never gets focused.
Also can be done from the environment variable:
export CURL_CA_BUNDLE=""
Apparently anti-virus software can also cause this error. In my case I had Windows Security's Ransomware Protection protecting my user folders which caused this error.
Since you are conditionally indexing df$est
, you also need to conditionally index the replacement vector df$a
:
index <- df$b == 0
df$est[index] <- (df$a[index] - 5)/2.533
Of course, the variable index
is just temporary, and I use it to make the code a bit more readible. You can write it in one step:
df$est[df$b == 0] <- (df$a[df$b == 0] - 5)/2.533
For even better readibility, you can use within
:
df <- within(df, est[b==0] <- (a[b==0]-5)/2.533)
The results, regardless of which method you choose:
df
a b est
1 11.77000 2 0.000000
2 10.90000 3 0.000000
3 10.32000 2 0.000000
4 10.96000 0 2.352941
5 9.90600 0 1.936834
6 10.70000 0 2.250296
7 11.43000 1 0.000000
8 11.41000 2 0.000000
9 10.48512 4 0.000000
10 11.19000 0 2.443743
As others have pointed out, an alternative solution in your example is to use ifelse
.
I bought private proxy server, after purchase I got:
255.255.255.255 // IP address of proxy server
99999 // port of proxy server
username // authentication username of proxy server
password // authentication password of proxy server
And I wanted to use it. First answer and second answer worked only for http(proxy) -> http(destination), however I wanted http(proxy) -> https(destination).
And for https destination it would be better to use HTTP tunnel directly. I found solution here. Final code:
const http = require('http')
const https = require('https')
const username = 'username'
const password = 'password'
const auth = 'Basic ' + Buffer.from(username + ':' + password).toString('base64')
http.request({
host: '255.255.255.255', // IP address of proxy server
port: 99999, // port of proxy server
method: 'CONNECT',
path: 'kinopoisk.ru:443', // some destination, add 443 port for https!
headers: {
'Proxy-Authorization': auth
},
}).on('connect', (res, socket) => {
if (res.statusCode === 200) { // connected to proxy server
https.get({
host: 'www.kinopoisk.ru',
socket: socket, // using a tunnel
agent: false, // cannot use a default agent
path: '/your/url' // specify path to get from server
}, (res) => {
let chunks = []
res.on('data', chunk => chunks.push(chunk))
res.on('end', () => {
console.log('DONE', Buffer.concat(chunks).toString('utf8'))
})
})
}
}).on('error', (err) => {
console.error('error', err)
}).end()
it turns out that with python 2.5.2, del l[:]
is slightly slower than l[:] = []
by 1.1 usec.
$ python -mtimeit "l=list(range(1000))" "b=l[:];del b[:]"
10000 loops, best of 3: 29.8 usec per loop
$ python -mtimeit "l=list(range(1000))" "b=l[:];b[:] = []"
10000 loops, best of 3: 28.7 usec per loop
$ python -V
Python 2.5.2
You have different choices to handle this. It seem like its taking us back to old good plain SQL days :)
Read this: http://www.javacodegeeks.com/2012/07/four-solutions-to-lazyinitializationexc_05.html
You have two options, a PL/SQL block or SQL*Plus bind variables:
var z number
execute my_stored_proc (-1,2,0.01,:z)
print z
Please consider the deasync module, personally I don't like the Promise way to make all functions async, and keyword async/await anythere. And I think the official node.js should consider to expose the event loop API, this will solve the callback hell simply. Node.js is a framework not a language.
var node = require("deasync");
node.loop = node.runLoopOnce;
var done = 0;
// async call here
db.query("select * from ticket", (error, results, fields)=>{
done = 1;
});
while (!done)
node.loop();
// Now, here you go
Chances are you need to install .NET 4 (Which will also create a new AppPool for you)
First make sure you have IIS installed then perform the following steps:
cmd
and press ENTERcd C:\Windows\Microsoft.NET\Framework\v4.0.30319\
and press ENTER.aspnet_regiis.exe -ir
and press ENTER again.
-i
instead of -ir
. This will change their AppPools for you and steps 5-on shouldn't be necessary.(You can repeat steps 7-on for every site you want to apply .NET 4 on as well).
Additional References:
-ir
or -i
does (or the difference between them) or what other options are available. (I typically use -ir
to prevent any older sites currently running from breaking on a framework change but that's up to you.)i have read above answers and have created a utility class to simplify HTTP request. i hope it will help you.
Method Call
// send params with Hash Map
HashMap<String, String> params = new HashMap<String, String>();
params.put("email","[email protected]");
params.put("password","12345");
//server url
String url = "http://www.example.com";
// static class "HttpUtility" with static method "newRequest(url,method,callback)"
HttpUtility.newRequest(url,HttpUtility.METHOD_POST,params, new HttpUtility.Callback() {
@Override
public void OnSuccess(String response) {
// on success
System.out.println("Server OnSuccess response="+response);
}
@Override
public void OnError(int status_code, String message) {
// on error
System.out.println("Server OnError status_code="+status_code+" message="+message);
}
});
Utility Class
import java.io.*;
import java.net.*;
import java.util.HashMap;
import java.util.Map;
import static java.net.HttpURLConnection.HTTP_OK;
public class HttpUtility {
public static final int METHOD_GET = 0; // METHOD GET
public static final int METHOD_POST = 1; // METHOD POST
// Callback interface
public interface Callback {
// abstract methods
public void OnSuccess(String response);
public void OnError(int status_code, String message);
}
// static method
public static void newRequest(String web_url, int method, HashMap < String, String > params, Callback callback) {
// thread for handling async task
new Thread(new Runnable() {
@Override
public void run() {
try {
String url = web_url;
// write GET params,append with url
if (method == METHOD_GET && params != null) {
for (Map.Entry < String, String > item: params.entrySet()) {
String key = URLEncoder.encode(item.getKey(), "UTF-8");
String value = URLEncoder.encode(item.getValue(), "UTF-8");
if (!url.contains("?")) {
url += "?" + key + "=" + value;
} else {
url += "&" + key + "=" + value;
}
}
}
HttpURLConnection urlConnection = (HttpURLConnection) new URL(url).openConnection();
urlConnection.setUseCaches(false);
urlConnection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded"); // handle url encoded form data
urlConnection.setRequestProperty("charset", "utf-8");
if (method == METHOD_GET) {
urlConnection.setRequestMethod("GET");
} else if (method == METHOD_POST) {
urlConnection.setDoOutput(true); // write POST params
urlConnection.setRequestMethod("POST");
}
//write POST data
if (method == METHOD_POST && params != null) {
StringBuilder postData = new StringBuilder();
for (Map.Entry < String, String > item: params.entrySet()) {
if (postData.length() != 0) postData.append('&');
postData.append(URLEncoder.encode(item.getKey(), "UTF-8"));
postData.append('=');
postData.append(URLEncoder.encode(String.valueOf(item.getValue()), "UTF-8"));
}
byte[] postDataBytes = postData.toString().getBytes("UTF-8");
urlConnection.setRequestProperty("Content-Length", String.valueOf(postDataBytes.length));
urlConnection.getOutputStream().write(postDataBytes);
}
// server response code
int responseCode = urlConnection.getResponseCode();
if (responseCode == HTTP_OK && callback != null) {
BufferedReader reader = new BufferedReader(new InputStreamReader(urlConnection.getInputStream()));
StringBuilder response = new StringBuilder();
String line;
while ((line = reader.readLine()) != null) {
response.append(line);
}
// callback success
callback.OnSuccess(response.toString());
reader.close(); // close BufferReader
} else if (callback != null) {
// callback error
callback.OnError(responseCode, urlConnection.getResponseMessage());
}
urlConnection.disconnect(); // disconnect connection
} catch (IOException e) {
e.printStackTrace();
if (callback != null) {
// callback error
callback.OnError(500, e.getLocalizedMessage());
}
}
}
}).start(); // start thread
}
}
To submit a single file, you can simply use the File
object from the input
's .files
array directly as the value of body:
in your fetch()
initializer:
const myInput = document.getElementById('my-input');
// Later, perhaps in a form 'submit' handler or the input's 'change' handler:
fetch('https://example.com/some_endpoint', {
method: 'POST',
body: myInput.files[0],
});
This works because File
inherits from Blob
, and Blob
is one of the permissible BodyInit
types defined in the Fetch Standard.
As aditional information on @Quentin answer, and as he rightly says,
background
CSS property itself, is a shorthand for:
background-color
background-image
background-repeat
background-attachment
background-position
That's mean, you can group all styles in one, like:
background: red url(../img.jpg) 0 0 no-repeat fixed;
This would be (in this example):
background-color: red;
background-image: url(../img.jpg);
background-repeat: no-repeat;
background-attachment: fixed;
background-position: 0 0;
So... when you set: background:none;
you are saying that all the background properties are set to none...
You are saying that background-image: none;
and all the others to the initial
state (as they are not being declared).
So, background:none;
is:
background-color: initial;
background-image: none;
background-repeat: initial;
background-attachment: initial;
background-position: initial;
Now, when you define only the color (in your case transparent
) then you are basically saying:
background-color: transparent;
background-image: initial;
background-repeat: initial;
background-attachment: initial;
background-position: initial;
I repeat, as @Quentin rightly says the default
transparent
and none
values in this case are the same, so in your example and for your original question, No, there's no difference between them.
But!.. if you say background:none
Vs background:red
then yes... there's a big diference, as I say, the first would set all properties to none/default
and the second one, will only change the color
and remains the rest in his default
state.
Short answer: No, there's no difference at all (in your example and orginal question)
Long answer: Yes, there's a big difference, but depends directly on the properties granted to attribute.
default
)Initial value the concatenation of the initial values of its longhand properties:
background-image: none
background-position: 0% 0%
background-size: auto auto
background-repeat: repeat
background-origin: padding-box
background-style: is itself a shorthand, its initial value is the concatenation of its own longhand properties
background-clip: border-box
background-color: transparent
background
descriptions hereUpd2: Clarify better the background:none;
specification.
You can change it in new Android studio version(0.8.X)
FIle-> Other Settings -> Default Settings -> Compiler (Expand it by clicking left arrow) -> Java Compiler -> You can change the Project bytecode version here
You should use adb shell getprop
command and grep
specific info about your current device, For additional information you can read documentation:
Android Debug Bridge documentation
I added some examples below:
language - adb shell getprop | grep language
[persist.sys.language]: [en]
[ro.product.locale.language]: [en]
boot complete ( device ready after reset) - adb shell getprop | grep boot_completed
[sys.boot_completed]: [1]
device model - adb shell getprop | grep model
[ro.product.model]: [Nexus 4]
sdk version - adb shell getprop | grep sdk
[ro.build.version.sdk]: [22]
time zone - adb shell getprop | grep timezone
[persist.sys.timezone]: [Asia/China]
serial number - adb shell getprop | grep serialno
[ro.boot.serialno]: [1234567]
Change in the my.ini
or ~/.my.cnf
file by including the single line under [mysqld]
or [client]
section in your file:
max_allowed_packet=500M
then restart the MySQL service and you are done.
See the documentation for further information.
This is the most efficient way to see if a number is prime, if you only have a few query. If you ask a lot of numbers if they are prime try Sieve of Eratosthenes.
import math
def is_prime(n):
if n == 2:
return True
if n % 2 == 0 or n <= 1:
return False
sqr = int(math.sqrt(n)) + 1
for divisor in range(3, sqr, 2):
if n % divisor == 0:
return False
return True
None of these solutions worked for me. I needed to know the server port while constructing a Swagger configuration bean. Using ServerProperties worked for me:
import javax.annotation.PostConstruct;
import javax.inject.Inject;
import javax.ws.rs.ApplicationPath;
import io.swagger.jaxrs.config.BeanConfig;
import io.swagger.jaxrs.listing.ApiListingResource;
import io.swagger.jaxrs.listing.SwaggerSerializers;
import org.glassfish.jersey.server.ResourceConfig;
import org.springframework.stereotype.Component;
@Component
@ApplicationPath("api")
public class JerseyConfig extends ResourceConfig
{
@Inject
private org.springframework.boot.autoconfigure.web.ServerProperties serverProperties;
public JerseyConfig()
{
property(org.glassfish.jersey.server.ServerProperties.BV_SEND_ERROR_IN_RESPONSE, true);
}
@PostConstruct
protected void postConstruct()
{
// register application endpoints
registerAndConfigureSwaggerUi();
}
private void registerAndConfigureSwaggerUi()
{
register(ApiListingResource.class);
register(SwaggerSerializers.class);
final BeanConfig config = new BeanConfig();
// set other properties
config.setHost("localhost:" + serverProperties.getPort()); // gets server.port from application.properties file
}
}
This example uses Spring Boot auto configuration and JAX-RS (not Spring MVC).
Ruby is v2.0 now. Programs like Jekyll (and I am sure many others) require it. I just ran:
sudo apt-get install ruby2.0
check version
ruby --version
Hope that helps
Too many comments to make to different answers, so I'll leave another answer here.
You can and should use reinterpret_cast<>
, in your case
str.append(reinterpret_cast<const char*>(foo()));
because, while these two are different types, the 2014 standard, chapter 3.9.1 Fundamental types [basic.fundamental]
says there is a relationship between them:
Plain
char
,signed char
andunsigned char
are three distinct types, collectively called narrow character types. Achar
, asigned char
, and anunsigned char
occupy the same amount of storage and have the same alignment requirements (3.11); that is, they have the same object representation.
(selection is mine)
Here's an available link: https://en.cppreference.com/w/cpp/language/types#Character_types
Using wchar_t
for Unicode/multibyte strings is outdated: Should I use wchar_t when using UTF-8?
The 8086 has a large family of instructions that accept a register operand and an effective address, perform some computations to compute the offset part of that effective address, and perform some operation involving the register and the memory referred to by the computed address. It was fairly simple to have one of the instructions in that family behave as above except for skipping that actual memory operation. Thus, the instructions:
mov ax,[bx+si+5]
lea ax,[bx+si+5]
were implemented almost identically internally. The difference is a skipped step. Both instructions work something like:
temp = fetched immediate operand (5)
temp += bx
temp += si
address_out = temp (skipped for LEA)
trigger 16-bit read (skipped for LEA)
temp = data_in (skipped for LEA)
ax = temp
As for why Intel thought this instruction was worth including, I'm not exactly sure, but the fact that it was cheap to implement would have been a big factor. Another factor would have been the fact that Intel's assembler allowed symbols to be defined relative to the BP
register. If fnord
was defined as a BP
-relative symbol (e.g. BP+8
), one could say:
mov ax,fnord ; Equivalent to "mov ax,[BP+8]"
If one wanted to use something like stosw
to store data to a BP-relative address, being able to say
mov ax,0 ; Data to store
mov cx,16 ; Number of words
lea di,fnord
rep movs fnord ; Address is ignored EXCEPT to note that it's an SS-relative word ptr
was more convenient than:
mov ax,0 ; Data to store
mov cx,16 ; Number of words
mov di,bp
add di,offset fnord (i.e. 8)
rep movs fnord ; Address is ignored EXCEPT to note that it's an SS-relative word ptr
Note that forgetting the world "offset" would cause the contents of location [BP+8]
, rather than the value 8, to be added to DI
. Oops.
While SimpleDateFormat
will indeed work for your needs, additionally you might want to check out Joda Time, which is apparently the basis for the redone Date library in Java 7. While I haven't used it a lot, I've heard nothing but good things about it and if your manipulating dates extensively in your projects it would probably be worth looking into.
For the sake of completeness, here's a simple one-liner compare
method:
Collections.sort(people, new Comparator<Person>() {
@Override
public int compare(Person lhs, Person rhs) {
return Integer.signum(lhs.getId() - rhs.getId());
}
});
Your regex ^[0-9]
matches anything beginning with a digit, including strings like "1A". To avoid a partial match, append a $
to the end:
^[0-9]*$
This accepts any number of digits, including none. To accept one or more digits, change the *
to +
. To accept exactly one digit, just remove the *
.
UPDATE: You mixed up the arguments to IsMatch
. The pattern should be the second argument, not the first:
if (!System.Text.RegularExpressions.Regex.IsMatch(textbox.Text, "^[0-9]*$"))
CAUTION: In JavaScript, \d
is equivalent to [0-9]
, but in .NET, \d
by default matches any Unicode decimal digit, including exotic fare like ? (Myanmar 2) and ? (N'Ko 9). Unless your app is prepared to deal with these characters, stick with [0-9]
(or supply the RegexOptions.ECMAScript flag).
You can use a kind of continue
by using a nested Do ... Loop While False
:
'This sample will output 1 and 3 only
Dim i As Integer
For i = 1 To 3: Do
If i = 2 Then Exit Do 'Exit Do is the Continue
Debug.Print i
Loop While False: Next i
A static method means that you don't need to invoke the method on an instance. A non-static (instance) method requires that you invoke it on an instance. So think about it: if I have a method changeThisItemToTheColorBlue()
and I try to run it from the main method, what instance would it change? It doesn't know. You can run an instance method on an instance, like someItem.changeThisItemToTheColorBlue()
.
More information at http://en.wikipedia.org/wiki/Method_(computer_programming)#Static_methods.
click appears to be blocking? - here's another way to wait if you're using WebDriverJS:
driver.findElement(webdriver.By.name('mybutton')).click().then(function(){
driver.getPageSource().then(function(source) {
console.log(source);
});
});
The code above waits after the button is clicked for the next page to load and then grabs the source of the next page.
Try this code. It works for me:
unzip(zipfile="<directory and filename>",
exdir="<directory where the content will be extracted>")
Example:
unzip(zipfile="./data/Data.zip",exdir="./data")
Drawing text in plain OpenGL isn't a straigth-forward task. You should probably have a look at libraries for doing this (either by using a library or as an example implementation).
Some good starting points could be GLFont, OpenGL Font Survey and NeHe Tutorial for Bitmap Fonts (Windows).
Note that bitmaps are not the only way of achieving text in OpenGL as mentioned in the font survey.
From the link: http://www.aptibook.com/discuss-technical?uid=tech-hive4&question=What-kind-of-datawarehouse-application-is-suitable-for-Hive?
Hive is not a full database. The design constraints and limitations of Hadoop and HDFS impose limits on what Hive can do.
Hive is most suited for data warehouse applications, where
1) Relatively static data is analyzed,
2) Fast response times are not required, and
3) When the data is not changing rapidly.
Hive doesn’t provide crucial features required for OLTP, Online Transaction Processing. It’s closer to being an OLAP tool, Online Analytic Processing. So, Hive is best suited for data warehouse applications, where a large data set is maintained and mined for insights, reports, etc.
A variation when using xpath in Java using count():
int numberofbodies = Integer.parseInt((String) xPath.evaluate("count(/html/body)", doc));
if( numberofbodies==0) {
// body node missing
}
It is worth noting that the accepted answer will round small floats down to zero.
>>> import numpy as np
>>> arr = np.asarray([2.92290007e+00, -1.57376965e-03, 4.82011728e-08, 1.92896977e-12])
>>> print(arr)
[ 2.92290007e+00 -1.57376965e-03 4.82011728e-08 1.92896977e-12]
>>> np.round(arr, 2)
array([ 2.92, -0. , 0. , 0. ])
You can use set_printoptions
and a custom formatter to fix this and get a more numpy-esque printout with fewer decimal places:
>>> np.set_printoptions(formatter={'float': "{0:0.2e}".format})
>>> print(arr)
[2.92e+00 -1.57e-03 4.82e-08 1.93e-12]
This way, you get the full versatility of format
and maintain the full precision of numpy's datatypes.
Also note that this only affects printing, not the actual precision of the stored values used for computation.
If GAAP Compliance is required or you need 4 decimal places:
DECIMAL(13, 4) Which supports a max value of:
$999,999,999.9999
Otherwise, if 2 decimal places is enough: DECIMAL(13,2)
src: https://rietta.com/blog/best-data-types-for-currencymoney-in/
The problem is with your curl options – the RCurl
package doesn't seem to use internet2.dll
.
You need to specify the port separately, and will probably need to give your user login details as network credentials, e.g.,
opts <- list(
proxy = "999.999.999.999",
proxyusername = "mydomain\\myusername",
proxypassword = "mypassword",
proxyport = 8080
)
getURL("http://stackoverflow.com", .opts = opts)
Remember to escape any backslashes in your password. You may also need to wrap the URL in a call to curlEscape
.
(Updated as of May 27, 2017)
Xcode 8. Swift Project - importing Objective C.
Things to know:
PostgreSQL Autodoc has worked well for me. It is a simple command line tool. From the web page:
This is a utility which will run through PostgreSQL system tables and returns HTML, Dot, Dia and DocBook XML which describes the database.
Yes, it is sufficient. The way injection type attacks work, is by somehow getting an interpreter (The database) to evaluate something, that should have been data, as if it was code. This is only possible if you mix code and data in the same medium (Eg. when you construct a query as a string).
Parameterised queries work by sending the code and the data separately, so it would never be possible to find a hole in that.
You can still be vulnerable to other injection-type attacks though. For example, if you use the data in a HTML-page, you could be subject to XSS type attacks.
What about creating an extension method?
public static class NullableExtensions
{
public static bool TryParse(this DateTime? dateTime, string dateString, out DateTime? result)
{
DateTime tempDate;
if(! DateTime.TryParse(dateString,out tempDate))
{
result = null;
return false;
}
result = tempDate;
return true;
}
}
Here's an alternative to Nicolás Fantone's answer. You could argue it's maybe a little less readable. The emphasis is that Array.from() can take an optional map function as a parameter. There are some performance gains this way since no intermediate array gets created.
const n = 123456;
Array.from(n.toString(), (val) => Number(val)); // [1, 2, 3, 4, 5, 6]
Locate phpMyAdmin installation path.
Open phpMyAdmin/config.inc.php
in your favourite text editor. Copy config.sample.inc.php
to config.inc.php
if it's missing.
Search for $cfg['Servers'][$i]['auth_type'] = 'config';
Replace it with $cfg['Servers'][$i]['auth_type'] = 'cookie';
Looks like you're missing the SEPARATOR keyword in the GROUP_CONCAT function.
GROUP_CONCAT(artists.artistname SEPARATOR '----')
The way you've written it, you're concatenating artists.artistname
with the '----'
string using the default comma separator.
I'd use np.all here, if you have an array a:
>>> np.all(a==0)
The issue you are encountering is a documented feature of get_or_create
.
When using keyword arguments other than "defaults" the return value of get_or_create
is an instance. That's why it is showing you the parens in the return value.
you could use customer.source = Source.objects.get_or_create(name="Website")[0]
to get the correct value.
Here is a link for the documentation: http://docs.djangoproject.com/en/dev/ref/models/querysets/#get-or-create-kwargs
The httpd dæmon on OpenBSD uses the following stylesheet for all of its error messages, which presumably covers all the Comic Sans variations on non-Windows systems:
http://openbsd.su/src/usr.sbin/httpd/server_http.c#server_abort_http
810 style = "body { background-color: white; color: black; font-family: "
811 "'Comic Sans MS', 'Chalkboard SE', 'Comic Neue', sans-serif; }\n"
812 "hr { border: 0; border-bottom: 1px dashed; }\n";
E.g., try this:
font-family: 'Comic Sans MS', 'Chalkboard SE', 'Comic Neue', sans-serif;
This should work:
data.groupby(lambda x: data['date'][x].year)
With pure JavaScript you can do this (such as SQL) and anything you need, basically:
<html>_x000D_
_x000D_
<body>_x000D_
_x000D_
<input type='button' value='F3' class="c2" id="btn_1">_x000D_
<input type='button' value='F3' class="c3" id="btn_2">_x000D_
<input type='button' value='F1' class="c2" id="btn_3">_x000D_
_x000D_
<input type='submit' value='F2' class="c1" id="btn_4">_x000D_
<input type='submit' value='F1' class="c3" id="btn_5">_x000D_
<input type='submit' value='F2' class="c1" id="btn_6">_x000D_
_x000D_
<br/>_x000D_
<br/>_x000D_
_x000D_
<button onclick="myFunction()">Try it</button>_x000D_
_x000D_
<script>_x000D_
function myFunction() _x000D_
{_x000D_
var arrFiltered = document.querySelectorAll('input[value=F2][type=submit][class=c1]');_x000D_
_x000D_
arrFiltered.forEach(function (el)_x000D_
{ _x000D_
var node = document.createElement("p");_x000D_
_x000D_
node.innerHTML = el.getAttribute('id');_x000D_
_x000D_
window.document.body.appendChild(node);_x000D_
});_x000D_
}_x000D_
</script>_x000D_
_x000D_
</body>_x000D_
_x000D_
</html>
_x000D_
I'm using Argos reporting system as a front end and Oracle in back. I just encountered this error and it was caused by a string with a double quote at the start and a single quote at the end. Replacing the double quote with a single solved the issue.
It is terrible, but you can try to use
select
SUBSTRING(Table1.Col1,0,PATINDEX('%|%=',Table1.Col1)) as myString
from
Table1
This code is probably not 100% right though. need to be adjusted
I've done some research and it seems that the sys.argv might require an argument at the command line when running the script
Not might, but definitely requires. That's the whole point of sys.argv
, it contains the command line arguments. Like any python array, accesing non-existent element raises IndexError
.
Although the code uses try/except
to trap some errors, the offending statement occurs in the first line.
So the script needs a directory name, and you can test if there is one by looking at len(sys.argv)
and comparing to 1+number_of_requirements. The argv always contains the script name plus any user supplied parameters, usually space delimited but the user can override the space-split through quoting. If the user does not supply the argument, your choices are supplying a default, prompting the user, or printing an exit error message.
To print an error and exit when the argument is missing, add this line before the first use of sys.argv:
if len(sys.argv)<2:
print "Fatal: You forgot to include the directory name on the command line."
print "Usage: python %s <directoryname>" % sys.argv[0]
sys.exit(1)
sys.argv[0]
always contains the script name, and user inputs are placed in subsequent slots 1, 2, ...
see also:
If you are not bothered about the location of the text present, then you could use Driver.PageSource property as below:
Driver.PageSource.Contains("expected message");
If JSON is dynamic as below
{
"Items": [{
"Name": "Apple",
"Price": 12.3
},
{
"Name": "Grape",
"Price": 3.21
}
],
"Date": "21/11/2010"
}
Then, Once you install NewtonSoft.Json
from NuGet and include it in your project, you can serialize it as
string jsonString = "{\"Items\": [{\"Name\": \"Apple\",\"Price\": 12.3},{\"Name\": \"Grape\",\"Price\": 3.21}],\"Date\": \"21/11/2010\"}";
dynamic DynamicData = JsonConvert.DeserializeObject(jsonString);
Console.WriteLine( DynamicData.Date); // "21/11/2010"
Console.WriteLine(DynamicData.Items.Count); // 2
Console.WriteLine(DynamicData.Items[0].Name); // "Apple"
Source: How to read JSON data in C# (Example using Console app & ASP.NET MVC)?
I just use the UTF code for space "\u0020" in the strings.xml file.
<string name="some_string">\u0020The name of my string.\u0020\u0020</string>
works great. (Android loves UTF codes)
for another answer about this type of question this is my another answer for getting count of product base on product name distinct like this sample below:
select * FROM Product
SELECT DISTINCT(Product_Name),
(SELECT COUNT(Product_Name)
from Product WHERE Product_Name = Prod.Product_Name)
as `Product_Count`
from Product as Prod
Record Count: 4; Execution Time: 2ms
Make sure that the htaccess file is readable by apache:
chmod 644 /var/www/abc/.htaccess
And make sure the directory it's in is readable and executable:
chmod 755 /var/www/abc/
That's how I would handle different images (sizes and proportions) in a flexible grid.
.images {_x000D_
display: flex;_x000D_
flex-wrap: wrap;_x000D_
margin: -20px;_x000D_
}_x000D_
_x000D_
.imagewrapper {_x000D_
display: flex;_x000D_
justify-content: center;_x000D_
align-items: center;_x000D_
width: calc(50% - 20px);_x000D_
height: 300px;_x000D_
margin: 10px;_x000D_
}_x000D_
_x000D_
.image {_x000D_
display: block;_x000D_
object-fit: cover;_x000D_
width: 100%;_x000D_
height: 100%; /* set to 'auto' in IE11 to avoid distortions */_x000D_
}
_x000D_
<div class="images">_x000D_
<div class="imagewrapper">_x000D_
<img class="image" src="https://via.placeholder.com/800x600" />_x000D_
</div>_x000D_
<div class="imagewrapper">_x000D_
<img class="image" src="https://via.placeholder.com/1024x768" />_x000D_
</div>_x000D_
<div class="imagewrapper">_x000D_
<img class="image" src="https://via.placeholder.com/1000x800" />_x000D_
</div>_x000D_
<div class="imagewrapper">_x000D_
<img class="image" src="https://via.placeholder.com/500x800" />_x000D_
</div>_x000D_
<div class="imagewrapper">_x000D_
<img class="image" src="https://via.placeholder.com/800x600" />_x000D_
</div>_x000D_
<div class="imagewrapper">_x000D_
<img class="image" src="https://via.placeholder.com/1024x768" />_x000D_
</div>_x000D_
</div>
_x000D_
Why not simply use this
Date convertToDate(String receivedDate) throws ParseException{
SimpleDateFormat formatter = new SimpleDateFormat("dd-MM-yyyy");
Date date = formatter.parse(receivedDate);
return date;
}
Also, this is the other way :
DateFormat df = new SimpleDateFormat("dd/MM/yyyy");
String requiredDate = df.format(new Date()).toString();
or
Date requiredDate = df.format(new Date());
In Android Studio goto: File -> Project Structure... -> Notifications (last entry) -> check Google Cloud Messaging
Wait a few seconds and you're done :) import com.google.android.gms.gcm.GcmListenerService should be resolved properly
"ModelState.IsValid" tells you that the model is consumed by the view (i.e. PaymentAdviceEntity) is satisfy all types of validation or not specified in the model properties by DataAnotation.
In this code the view does not bind any model properties. So if you put any DataAnotations or validation in model (i.e. PaymentAdviceEntity). then the validations are not satisfy. say if any properties in model is Name which makes required in model.Then the value of the property remains blank after post.So the model is not valid (i.e. ModelState.IsValid returns false). You need to remove the model level validations.
Another innerHTML-less version.
function makeTable(array) {
var table = document.createElement('table');
for (var i = 0; i < array.length; i++) {
var row = document.createElement('tr');
for (var j = 0; j < array[i].length; j++) {
var cell = document.createElement('td');
cell.textContent = array[i][j];
row.appendChild(cell);
}
table.appendChild(row);
}
return table;
}
you can use more elements "end" in print:
for iValue in arr:
print(iValue, end = ", ");
Starting Python 3.8
, and the introduction of assignment expressions (PEP 572) (:=
operator), which gives the possibility to name the result of an expression, we can use a list comprehension to replicate what other languages call fold/foldleft/reduce operations:
Given a list, a reducing function and an accumulator:
items = [1, 2, 3, 4, 5]
f = lambda acc, x: acc * x
accumulator = 1
we can fold items
with f
in order to obtain the resulting accumulation
:
[accumulator := f(accumulator, x) for x in items]
# accumulator = 120
or in a condensed formed:
acc = 1; [acc := acc * x for x in [1, 2, 3, 4, 5]]
# acc = 120
Note that this is actually also a "scanleft" operation as the result of the list comprehension represents the state of the accumulation at each step:
acc = 1
scanned = [acc := acc * x for x in [1, 2, 3, 4, 5]]
# scanned = [1, 2, 6, 24, 120]
# acc = 120
You can place your folder in the root of the ServletContext.
Then specify a relative or absolute path to this directory in application.yml:
spring:
resources:
static-locations: file:some_temp_files/
The resources in this folder will be available (for downloading, for example) at:
http://<host>:<port>/<context>/your_file.csv
You should put all your words into some kind of Collection or List and then call it like this:
var searchFor = new List<string>();
searchFor.Add("pineapple");
searchFor.Add("mango");
bool containsAnySearchString = searchFor.Any(word => compareString.Contains(word));
If you need to make a case or culture independent search you should call it like this:
bool containsAnySearchString =
searchFor.Any(word => compareString.IndexOf
(word, StringComparison.InvariantCultureIgnoreCase >= 0);
You need to do that on the client side for instance with jQuery.
Let's say you want to retrieve HTML into div with ID mydiv
:
<h1>My page</h1>
<div id="mydiv">
<h2>This div is updated</h2>
</div>
You can update this part of the page with jQuery as follows:
$.get('/api/mydiv', function(data) {
$('#mydiv').html(data);
});
In the server-side you need to implement handler for requests coming to /api/mydiv
and return the fragment of HTML that goes inside mydiv.
See this Fiddle I made for you for a fun example using jQuery get with JSON response data: http://jsfiddle.net/t35F9/1/
In this case, it appears that you've already included the file somewhere. But for class files, you should really "include" them using require_once
to avoid that sort of thing; it won't include the file if it already has been. (And you should usually use require[_once]
, not include[_once]
, the difference being that require
will cause a fatal error if the file doesn't exist, instead of just issuing a warning.)
Hold CTRL and press F6 until you reached the editor you want, then release. The UI is not as pretty as the window selection, but the functionality is the same.
Try the following: Paste "2004-06-01 00:00:00.000" into Excel.
Now try paste "2004-06-01 00:00:00" into Excel.
Excel doesn't seem to be able to handle milliseconds when pasting...
For IPv4 addresses, you can use VARCHAR to store them as strings, but also look into storing them as long integesrs INT(11) UNSIGNED
. You can use MySQL's INET_ATON()
function to convert them to integer representation. The benefit of this is it allows you to do easy comparisons on them, like BETWEEN
queries
Generators could be thought of as shorthand for creating an iterator. They behave like a Java Iterator. Example:
>>> g = (x for x in range(10))
>>> g
<generator object <genexpr> at 0x7fac1c1e6aa0>
>>> g.next()
0
>>> g.next()
1
>>> g.next()
2
>>> list(g) # force iterating the rest
[3, 4, 5, 6, 7, 8, 9]
>>> g.next() # iterator is at the end; calling next again will throw
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
StopIteration
Hope this helps/is what you are looking for.
Update:
As many other answers are showing, there are different ways to create a generator. You can use the parentheses syntax as in my example above, or you can use yield. Another interesting feature is that generators can be "infinite" -- iterators that don't stop:
>>> def infinite_gen():
... n = 0
... while True:
... yield n
... n = n + 1
...
>>> g = infinite_gen()
>>> g.next()
0
>>> g.next()
1
>>> g.next()
2
>>> g.next()
3
...
View v=inflater.inflate(R.layout.alert_label_editor, null);
alertDialog.setContentView(v);
EditText editText = (EditText)v.findViewById(R.id.label_field);
editText.setText("test label");
alertDialog.show();
With VS2010+ there is a plugin solution: Line Endings Unifier.
With the plugin installed you can right click files and folders in the solution explorer and invoke the menu item Unify Line Endings in this file
Configuration for this is available via
Tools -> Options -> Line Endings Unifier.
The default file extension list that is included is pretty narrow:
.cpp; .c; .h; .hpp; .cs; .js; .vb; .txt;
Might want to use something like:
.cpp; .c; .h; .hpp; .cs; .js; .vb; .txt; .scss; .coffee; .ts; .jsx; .markdown; .config
You can write the command also for Bitbucket as mentioned by Dustin:
git push -f origin HEAD^:master
Note: instead of master you can use any branch. And it deletes just push on Bitbucket.
To remove last commit locally in git use:
git reset --hard HEAD~1
You may use implicit classes:
import scala.math._
object ExtNumber extends App {
implicit class ExtendedDouble(n: Double) {
def rounded(x: Int) = {
val w = pow(10, x)
(n * w).toLong.toDouble / w
}
}
// usage
val a = 1.23456789
println(a.rounded(2))
}
The usage of the Hardware acceleration depends on the System Image you choose on the emulator.
So,
Go to AVD manager, create virtual device, select hardware, click next.
Choose the System Image that does not require HAXM (hardware acceleration) for running. (That is appears at the right bottom of System image window.)
Note: for other systems that require HAXM, there no way to run them without hardware acceleration.
When you start Android studio Look for Profile or Debug apk.
After clicking you get the option to browse for the saved apk and you will be bale to later run it using emulator
A couple of additional points re use of vector
here.
Unlike ArrayList
and Array
in Java, you don't need to do anything special to treat a vector
as an array - the underlying storage in C++ is guaranteed to be contiguous and efficiently indexable.
Unlike ArrayList
, a vector
can efficiently hold primitive types without encapsulation as a full-fledged object.
When removing items from a vector
, be aware that the items above the removed item have to be moved down to preserve contiguous storage. This can get expensive for large containers.
Make sure if you store complex objects in the vector
that their copy constructor and assignment operators are efficient. Under the covers, C++ STL uses these during container housekeeping.
Advice about reserve()
ing storage upfront (ie. at vector construction or initialilzation time) to minimize memory reallocation on later extension carries over from Java to C++.
import React, { useState } from 'react';
function App() {
const [apes , setap] = useState('yo');
const handleClick = () =>{
setap(document.getElementById('name').value)
};
return (
<div>
<input id='name' />
<h2> {apes} </h2>
<button onClick={handleClick} />
</div>
);
}
export default App;
On the same theme as other answers, keeping it simple
Sub PrintArray(Data As Variant, Cl As Range)
Cl.Resize(UBound(Data, 1), UBound(Data, 2)) = Data
End Sub
Sub Test()
Dim MyArray() As Variant
ReDim MyArray(1 To 3, 1 To 3) ' make it flexible
' Fill array
' ...
PrintArray MyArray, ActiveWorkbook.Worksheets("Sheet1").[A1]
End Sub
A linebreak in regex is \n, so your script would be
var test = 'this\nis\na\ntest\nwith\newlines';
console.log(test.replace(/\n/g, ' '));
With the help of the of Guido mail provided by @kindall, we can understand the standard import process as trying to find the module in each member of sys.path
, and file as the result of this lookup (more details in PyMOTW Modules and Imports.). So if the module is located in an absolute path in sys.path
the result is absolute, but if it is located in a relative path in sys.path
the result is relative.
Now the site.py
startup file takes care of delivering only absolute path in sys.path
, except the initial ''
, so if you don't change it by other means than setting the PYTHONPATH (whose path are also made absolute, before prefixing sys.path
), you will get always an absolute path, but when the module is accessed through the current directory.
Now if you trick sys.path in a funny way you can get anything.
As example if you have a sample module foo.py
in /tmp/
with the code:
import sys
print(sys.path)
print (__file__)
If you go in /tmp you get:
>>> import foo
['', '/tmp', '/usr/lib/python3.3', ...]
./foo.py
When in in /home/user
, if you add /tmp
your PYTHONPATH
you get:
>>> import foo
['', '/tmp', '/usr/lib/python3.3', ...]
/tmp/foo.py
Even if you add ../../tmp
, it will be normalized and the result is the same.
But if instead of using PYTHONPATH
you use directly some funny path
you get a result as funny as the cause.
>>> import sys
>>> sys.path.append('../../tmp')
>>> import foo
['', '/usr/lib/python3.3', .... , '../../tmp']
../../tmp/foo.py
Guido explains in the above cited thread, why python do not try to transform all entries in absolute paths:
we don't want to have to call getpwd() on every import .... getpwd() is relatively slow and can sometimes fail outright,
So your path is used as it is.
To use requests (or any other blocking libraries) with asyncio, you can use BaseEventLoop.run_in_executor to run a function in another thread and yield from it to get the result. For example:
import asyncio
import requests
@asyncio.coroutine
def main():
loop = asyncio.get_event_loop()
future1 = loop.run_in_executor(None, requests.get, 'http://www.google.com')
future2 = loop.run_in_executor(None, requests.get, 'http://www.google.co.uk')
response1 = yield from future1
response2 = yield from future2
print(response1.text)
print(response2.text)
loop = asyncio.get_event_loop()
loop.run_until_complete(main())
This will get both responses in parallel.
With python 3.5 you can use the new await
/async
syntax:
import asyncio
import requests
async def main():
loop = asyncio.get_event_loop()
future1 = loop.run_in_executor(None, requests.get, 'http://www.google.com')
future2 = loop.run_in_executor(None, requests.get, 'http://www.google.co.uk')
response1 = await future1
response2 = await future2
print(response1.text)
print(response2.text)
loop = asyncio.get_event_loop()
loop.run_until_complete(main())
See PEP0492 for more.
Your code could look more like:
<?php
session_start();
$errorMsg = "";
$validUser = $_SESSION["login"] === true;
if(isset($_POST["sub"])) {
$validUser = $_POST["username"] == "admin" && $_POST["password"] == "password";
if(!$validUser) $errorMsg = "Invalid username or password.";
else $_SESSION["login"] = true;
}
if($validUser) {
header("Location: /login-success.php"); die();
}
?>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="content-type" content="text/html;charset=utf-8" />
<title>Login</title>
</head>
<body>
<form name="input" action="" method="post">
<label for="username">Username:</label><input type="text" value="<?= $_POST["username"] ?>" id="username" name="username" />
<label for="password">Password:</label><input type="password" value="" id="password" name="password" />
<div class="error"><?= $errorMsg ?></div>
<input type="submit" value="Home" name="sub" />
</form>
</body>
</html>
Now, when the page is redirected based on the header('LOCATION:wherever.php)
, put session_start()
at the top of the page and test to make sure $_SESSION['login'] === true
. Remember that ==
would be true if $_SESSION['login'] == 1
as well.
Of course, this is a bad idea for security reasons, but my example may teach you a different way of using PHP.
XML has a much wider application than f.ex. HTML. It doesn't have an intrinsic, or default "application". So, while you might not really care that web pages are also governed by what's allowed, from the author's side, you'll probably want to precisely define what an XML document may and may not contain.
It's like designing a database.
The thing about XML technologies is that they are textual in nature. With XSD, it means you have a data structure definition framework that can be "plugged in" to text processing tools like PHP. So not only can you manipulate the data itself, but also very easily change and document the structure, and even auto-generate front-ends.
Viewed like this, XSD is the "glue" or "middleware" between data (XML) and data-processing tools.
void main ()
{
int temp,integer,count=0,i,cnd=0;
char ascii[10]={0};
printf("enter a number");
scanf("%d",&integer);
if(integer>>31)
{
/*CONVERTING 2's complement value to normal value*/
integer=~integer+1;
for(temp=integer;temp!=0;temp/=10,count++);
ascii[0]=0x2D;
count++;
cnd=1;
}
else
for(temp=integer;temp!=0;temp/=10,count++);
for(i=count-1,temp=integer;i>=cnd;i--)
{
ascii[i]=(temp%10)+0x30;
temp/=10;
}
printf("\n count =%d ascii=%s ",count,ascii);
}
For example:
const std::map<LogLevel, const char*> g_log_levels_dsc =
{
{ LogLevel::Disabled, "[---]" },
{ LogLevel::Info, "[inf]" },
{ LogLevel::Warning, "[wrn]" },
{ LogLevel::Error, "[err]" },
{ LogLevel::Debug, "[dbg]" }
};
If map is a data member of a class, you can initialize it directly in header by the following way (since C++17):
// Example
template<>
class StringConverter<CacheMode> final
{
public:
static auto convert(CacheMode mode) -> const std::string&
{
// validate...
return s_modes.at(mode);
}
private:
static inline const std::map<CacheMode, std::string> s_modes =
{
{ CacheMode::All, "All" },
{ CacheMode::Selective, "Selective" },
{ CacheMode::None, "None" }
// etc
};
};
You can use this free service by adding a link which creates pdf from any url (e.g. http://www.phys.org):
You don't need to declare them as arrays if you want to use use them as pointers. You can simply reference pointers as if they were multi-dimensional arrays. Just create it as a pointer to a pointer and use malloc
:
int i;
int M=30, N=25;
int ** buf;
buf = (int**) malloc(M * sizeof(int*));
for(i=0;i<M;i++)
buf[i] = (int*) malloc(N * sizeof(int));
and then you can reference buf[3][5]
or whatever.
you can parse string with int.parse('your string value');
.
Example:- int num = int.parse('110011'); print(num); // prints 110011 ;