You can't prevent people from cracking your software.
However, you can make them create cracks that will hurt your sales less. Keygenerators that can issue a valid registration code for your software are much worse than simple patches that remove registration incentives from your software. That's because a crack will work for one software version only, and will cease to work with the next software update you release. The keygenerator will continue to work until you change your registration key algorithm and that's something you don't want to do often because it will put off your honest clients.
So, if you are looking for a method to fight illegal keygenerators for your software and you do not want to use assymetric encryption because of the long registration codes this generates, you might have a look at Partial Key Verification.
Partial Key Verification makes sure that each illegal keygenerator works only for one particular release of your software. Basically what you do is to make sure that each release of your software only links with the code for checking SOME digits of the registration code. Which digits exactly is random, so crackers would have to reverse engineer many different versions of your software and combine all this into one keygenerator in order to release a keygenerator that works for all versions of your software.
If you release new software versions on a regular basis, this leads to numerous keygenerators spread on all kinds of software piracy archives which are not working anymore. Potential software pirates usually look for a crack or keygen for the latest version, so they will likely try a few of those and give up eventually.
I've used the Partial Key Verification in my (C++) newer shareware games and it has been very effective. Before we had plenty of problems with keygenerators which we could not fight. Afterewards there were lots of cracks and some few keygenerators that worked only for that particular version of the game, but no key generator that would work with all versions. We regularly released very minor updates of the game and to render all previously existing cracks useless.
There seems to be an open source .NET framework for Partial Key Verification, although I have not tried it.
pre is your friend.
<pre>
<?php // code goes here
?>
</pre>
Or you can "View Source" in your browser. (Ctrl+U for most browser.)
Yisrael Dov's answer is the straightforward one, but it doesn't allow compression. You can use --format=zip
, but you can't directly unzip that with a pipe command like you can with tar, so you need to save it as a temporary file. Here's a script:
#!/bin/bash
BASENAME=$0
function usage {
echo "usage: $BASENAME <remote-repo> <file> ..."
exit 1
}
[ 2 -gt "$#" ] && { usage; }
REPO=$1
shift
FILES=$@
TMPFILE=`mktemp`.zip
git archive -9 --remote=$REPO HEAD $FILES -o $TMPFILE
unzip $TMPFILE
rm $TMPFILE
This works with directories too.
I find this lecture very valuable https://vimeo.com/190275665, in point 3 it summarizes these generators and also gives some performance analysis and guideline one when you use each one.
Try the following I found Here's a link
If your app targets M and above and declares as using the CAMERA permission which is not granted, then attempting to use this action will result in a SecurityException.
EasyImage.openCamera(Activity activity, int type);
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
EasyImage.handleActivityResult(requestCode, resultCode, data, this, new DefaultCallback() {
@Override
public void onImagePickerError(Exception e, EasyImage.ImageSource source, int type) {
//Some error handling
}
@Override
public void onImagesPicked(List<File> imagesFiles, EasyImage.ImageSource source, int type) {
//Handle the images
onPhotosReturned(imagesFiles);
}
});
}
The simplest way:
td:nth-child(2) {
padding-right: 20px;
}?
But that won't work if you need to work with background color or images in your table. In that case, here is a slightly more advanced solution (CSS3):
td:nth-child(2) {
border-right: 10px solid transparent;
-webkit-background-clip: padding;
-moz-background-clip: padding;
background-clip: padding-box;
}
It places a transparent border to the right of the cell and pulls the background color/image away from the border, creating the illusion of spacing between the cells.
Note: For this to work, the parent table must have border-collapse: separate
. If you have to work with border-collapse: collapse
then you have to apply the same border style to the next table cell, but on the left side, to accomplish the same results.
If you have a number, for example 65, and if you want to get the corresponding ASCII character, you can use the chr
function, like this
>>> chr(65)
'A'
similarly if you have 97,
>>> chr(97)
'a'
EDIT: The above solution works for 8 bit characters or ASCII characters. If you are dealing with unicode characters, you have to specify unicode value of the starting character of the alphabet to ord
and the result has to be converted using unichr
instead of chr
.
>>> print unichr(ord(u'\u0B85'))
?
>>> print unichr(1 + ord(u'\u0B85'))
?
NOTE: The unicode characters used here are of the language called "Tamil", my first language. This is the unicode table for the same http://www.unicode.org/charts/PDF/U0B80.pdf
Both the regex and included files are good methods, and I frequently use those. But another alternative is to use a "named location", which is a useful approach in many situations — especially more complicated ones. The official "If is Evil" page shows essentially the following as a good way to do things:
error_page 418 = @common_location;
location /first/location/ {
return 418;
}
location /second/location/ {
return 418;
}
location @common_location {
# The common configuration...
}
There are advantages and disadvantages to these various approaches. One big advantage to a regex is that you can capture parts of the match and use them to modify the response. Of course, you can usually achieve similar results with the other approaches by either setting a variable in the original block or using map
. The downside of the regex approach is that it can get unwieldy if you want to match a variety of locations, plus the low precedence of a regex might just not fit with how you want to match locations — not to mention that there are apparently performance impacts from regexes in some cases.
The main advantage of including files (as far as I can tell) is that it is a little more flexible about exactly what you can include — it doesn't have to be a full location block, for example. But it's also just subjectively a bit clunkier than named locations.
Also note that there is a related solution that you may be able to use in similar situations: nested locations. The idea is that you would start with a very general location, apply some configuration common to several of the possible matches, and then have separate nested locations for the different types of paths that you want to match. For example, it might be useful to do something like this:
location /specialpages/ {
# some config
location /specialpages/static/ {
try_files $uri $uri/ =404;
}
location /specialpages/dynamic/ {
proxy_pass http://127.0.0.1;
}
}
element.click() is a standard method outlined by the W3C DOM specification. Mozilla's Gecko/Firefox follows the standard and only allows this method to be called on INPUT elements.
/* NaNs, infinities, denormals unhandled */
/* assumes sizeof(float) == 4 and uses ieee754 binary32 format */
/* assumes two's-complement machine */
/* C99 */
#include <stdint.h>
#define SIGN(f) (((f) <= -0.0) ? 1 : 0)
#define AS_U32(f) (*(const uint32_t*)&(f))
#define FLOAT_EXPONENT_WIDTH 8
#define FLOAT_MANTISSA_WIDTH 23
#define FLOAT_BIAS ((1<<(FLOAT_EXPONENT_WIDTH-1))-1) /* 2^(e-1)-1 */
#define MASK(width) ((1<<(width))-1) /* 2^w - 1 */
#define FLOAT_IMPLICIT_MANTISSA_BIT (1<<FLOAT_MANTISSA_WIDTH)
/* correct exponent with bias removed */
int float_exponent(float f) {
return (int)((AS_U32(f) >> FLOAT_MANTISSA_WIDTH) & MASK(FLOAT_EXPONENT_WIDTH)) - FLOAT_BIAS;
}
/* of non-zero, normal floats only */
int float_mantissa(float f) {
return (int)(AS_U32(f) & MASK(FLOAT_MANTISSA_BITS)) | FLOAT_IMPLICIT_MANTISSA_BIT;
}
/* Hacker's Delight book is your friend. */
For anyone using Firebase you need to go into your console and there it should say "add project to Android". From there, it will step-by-step generate the google-services.json file for you.
You could create a vars rule in your make file, like this:
dispvar = echo $(1)=$($(1)) ; echo
.PHONY: vars
vars:
@$(call dispvar,SOMEVAR1)
@$(call dispvar,SOMEVAR2)
There are some more robust ways to dump all variables here: gnu make: list the values of all variables (or "macros") in a particular run.
The best way I found so far is to go to the Oauth playground here: https://developers.google.com/oauthplayground/
In the HTTP header for the REST API request, add: "Authorization: Bearer ". Here, Authorization is the key, and "Bearer ". For example: "Authorization: Bearer za29.KluqA3vRtZChWfJDabcdefghijklmnopqrstuvwxyz6nAZ0y6ElzDT3yH3MT5"
It'd be easier to do your UPDATE first and then run 'SELECT ID FROM INSERTED'.
Take a look at SQL Tips for more info and examples.
The network setup is crucial for any measurements. It makes a huge difference, if you are communicating via sockets on your local machine or with the other end of the world.
Three things I want to add to the discussion:
>>> from datetime import date, timedelta
>>> yesterday = date.today() - timedelta(days=1)
>>> yesterday.strftime('%m%d%y')
'110909'
While not yet supported on iOS (as of iOS 10), websites can send push notifications to Firefox and Chrome (Desktop/Android) with the Push API.
The Push API is used in conjunction with the older Web Notifications to display the message. The advantage is that the Push API allow the notification to be delivered even when the user is not surfing your website, because they are built upon Service Workers (scripts that are registered by the browser and can be executed in background at a later time even after your user has left your website).
The process of sending a notification involves the following:
The Push API is currently supported on desktop and Android by Chrome, Firefox and Opera.
You can also send push notifications to Apple / Safari desktop using APNs. The approach is similar, but with many complications (apple developer certificates, push packages, low-level TCP connection to APNs).
If you want to implement the push notifications by yourself start with these tutorials:
If you are looking for a drop in solution I would suggest Pushpad, which is a service I have built.
Update (September 2017): Apple has started developing the service workers for WebKit (status). Since the service workers are a fundamental technology for web push, this is a big step forward.
Based in the answer of Paul Draper, I created a solution that work continuously when you have Iframes that open other tab in the browser. When you return the page continue to be active to detect the click over the framework, this is a very common situation:
focus();
$(window).blur(() => {
let frame = document.activeElement;
if (document.activeElement.tagName == "IFRAME") {
// Do you action.. here frame has the iframe clicked
let frameid = frame.getAttribute('id')
let frameurl = (frame.getAttribute('src'));
}
});
document.addEventListener("visibilitychange", function () {
if (document.hidden) {
} else {
focus();
}
});
The Code is simple, the blur event detect the lost of focus when the iframe is clicked, and test if the active element is the iframe (if you have several iframe you can know who was selected) this situation is frequently when you have publicity frames.
The second event trigger a focus method when you return to the page. it is used the visibility change event.
A thorough explanation of the Singleton macro code is on the blog Cocoa With Love
http://cocoawithlove.com/2008/11/singletons-appdelegates-and-top-level.html.
For anyone on MacOS (I'm on Mojave 10.14), the following helped me out: https://github.com/reactioncommerce/reaction/issues/1938#issuecomment-284207213
You'd run these commands
echo kern.maxfiles=65536 | sudo tee -a /etc/sysctl.conf
echo kern.maxfilesperproc=65536 | sudo tee -a /etc/sysctl.conf
sudo sysctl -w kern.maxfiles=65536
sudo sysctl -w kern.maxfilesperproc=65536
ulimit -n 65536
Then try npm install
once more.
Accordingly to W3C checked input's attribute can be absent/ommited or have "checked" as its value. This does not invalidate other values because there's no restriction to the browser implementation to allow values like "true", "on", "yes" and so on. To guarantee that you'll write a cross-browser checkbox/radio use checked="checked", as recommended by W3C.
disabled, readonly and ismap input's attributes go on the same way.
EDITED
empty is not a valid value for checked, disabled, readonly and ismap input's attributes, as warned by @Quentin
One more Windows recipe: use system-wide environment variable NUMBER_OF_PROCESSORS
:
printf("%d\n", atoi(getenv("NUMBER_OF_PROCESSORS")));
As of EF 5.0, you need to include the System.ComponentModel.DataAnnotations.Schema
namespace.
The browser default which is something like 16pt for Firefox, You can check by going into Firefox options, clicking the Content tab, and checking the font size. You can do the same for other browsers as well.
I personally like to control the default font size of my websites, so in a CSS file that is included in every page I will set the BODY default, like so:
body {
font-family: Helvetica, Arial, sans-serif;
font-size: 14px
}
Now the font-size of all my HTML tags will inherit a font-size of 14px.
Say that I want a all divs to have a font size 10% bigger than body, I simply do:
div {
font-size: 110%
}
Now any browser that view my pages will autmoatically make all divs 10% bigger than that of the body, which should be something like 15.4px.
If I want the font-size of all div's to be 10% smaller, I do:
div {
font-size: 90%
}
This will make all divs have a font-size of 12.6px.
Also you should know that since font-size is inherited, that each nested div will decrease in font size by 10%, so:
<div>Outer DIV.
<div>Inner DIV</div>
</div>
The inner div will have a font-size of 11.34px (90% of 12.6px), which may not have been intended.
This can help in the explanation: http://www.w3.org/TR/2011/REC-CSS2-20110607/syndata.html#value-def-percentage
When I first started working with CodeIgniter, not using GET really threw me off as well. But then I realized that you can simulate GET parameters by manipulating the URI using the built-in URI Class. It's fantastic and it makes your URLs look better.
Or if you really need GETs working you can put this into your controller:
parse_str($_SERVER['QUERY_STRING'], $_GET);
Which will put the variables back into the GET array.
The selected answer would work for as long as you know the key itself that you want to delete but if it should be truly dynamic you would need to use the [] notation instead of the dot notation.
For example:
var keyToDelete = "key1";
var myObj = {"test": {"key1": "value", "key2": "value"}}
//that will not work.
delete myObj.test.keyToDelete
instead you would need to use:
delete myObj.test[keyToDelete];
Substitute the dot notation with [] notation for those values that you want evaluated before being deleted.
First, your jQuery will not work at all unless you enclose all your tr
s and td
s in a table:
<table>
<tr>...</tr>
...
</table>
Second, your code gets the id
of the first tr
of the page, since you select all the tr
s of the page and get the id
of the first one (.attr()
returns the attribute of the first element in the set of elements it is used on)
Your current code:
$('input[type=button]' ).click(function() {
bid = (this.id) ; // button ID
trid = $('tr').attr('id'); // ID of the the first TR on the page
// $('tr') selects all trs in the DOM
});
Instead of selecting all tr
s on the page with $('tr')
, you want to select the first ancestor of the clicked upon input
that is a tr
. Use .closest()
for this in the form $(this).closest('tr')
.
You can reference the clicked on element as this
, make a jQuery object out of it with the form $(this)
, so you have access to all the jQuery methods on it.
What your code should look like:
// On DOM ready...
$(function() {
$('input[type=button]' ).click(function() {
var bid, trid; // Declare variables. If you don't use var
// you will bind bid and trid
// to the window, since you make them global variables.
bid = (this.id) ; // button ID
trid = $(this).closest('tr').attr('id'); // table row ID
});
});
The rules to avoid collision of names are both in the C++ standard (see Stroustrup book) and mentioned by C++ gurus (Sutter, etc.).
Because I did not want to deal with cases, and wanted a simple rule, I have designed a personal one that is both simple and correct:
When naming a symbol, you will avoid collision with compiler/OS/standard libraries if you:
Of course, putting your code in an unique namespace helps to avoid collision, too (but won't protect against evil macros)
(I use macros because they are the more code-polluting of C/C++ symbols, but it could be anything from variable name to class name)
#define _WRONG
#define __WRONG_AGAIN
#define RIGHT_
#define WRONG__WRONG
#define RIGHT_RIGHT
#define RIGHT_x_RIGHT
From the n3242.pdf file (I expect the final standard text to be similar):
17.6.3.3.2 Global names [global.names]
Certain sets of names and function signatures are always reserved to the implementation:
— Each name that contains a double underscore _ _ or begins with an underscore followed by an uppercase letter (2.12) is reserved to the implementation for any use.
— Each name that begins with an underscore is reserved to the implementation for use as a name in the global namespace.
But also:
17.6.3.3.5 User-defined literal suffixes [usrlit.suffix]
Literal suffix identifiers that do not start with an underscore are reserved for future standardization.
This last clause is confusing, unless you consider that a name starting with one underscore and followed by a lowercase letter would be Ok if not defined in the global namespace...
The below might help anyone that is looking to reverse a string recursively. Was asked to do this in a recent job interview using functional programming style:
var reverseStr = function(str) {
return (str.length > 0) ? str[str.length - 1] + reverseStr(str.substr(0, str.length - 1)) : '';
};
//tests
console.log(reverseStr('setab retsam')); //master bates
Press Ctrl+H (Replace)
Select Extended
from SearchMode
Put \r\n\r\n
in Find What
Put \r\n
in ReplaceWith
Click on Replace All
Be aware of the "date=iso
" format: it isn't exactly ISO 8601.
See commit "466fb67" from Beat Bolli (bbolli
), for Git 2.2.0 (November 2014)
Git's "ISO" date format does not really conform to the ISO 8601 standard due to small differences, and it cannot be parsed by ISO 8601-only parsers, e.g. those of XML toolchains.
The output from "
--date=iso
" deviates from ISO 8601 in these ways:
- a space instead of the
T
date/time delimiter- a space between time and time zone
- no colon between hours and minutes of the time zone
Add a strict ISO 8601 date format for displaying committer and author dates.
Use the '%aI
' and '%cI
' format specifiers and add '--date=iso-strict
' or '--date=iso8601-strict
' date format names.
See this thread for discussion.
This is really easy: Example
//my object
var sendData = {field1:value1, field2:value2};
//add element
sendData['field3'] = value3;
Creating new oauth credentials worked for me
Basically what others have already posted but IMHO a bit cleaner:
$('<iframe/>', {
src: 'https://example.com/',
load: function() {
alert("loaded")
}
}).appendTo('body');
for online solution try maqetta and aloha editor
for offline solution (download-able) try blue griffon
they are free :) oh yeah, one more, my favorite editor :) and game editor also: construct2
As far as I know, this is the C++ Runtime Library. So it depends on the compiler you use to create your program (A new version will include some C++0x stuff, an older version will probably not for instance. It depends of the compiler and of its version).
If you use MinGW then you should use the libstdc++-6.dll found into the folder of this compiler. MinGW/bin folder should be the place to search for it on your computer.
If you copy this file in the same directory as your executable, it should be OK.
All the above answers are generating an issue which is that col[0].column is returning number while worksheet.column_dimensions[column] accepts only character such as 'A', 'B', 'C' in place of column. I've modified @Virako's code and it is working fine now.
import re
import openpyxl
..
for col in _ws.columns:
max_lenght = 0
print(col[0])
col_name = re.findall('\w\d', str(col[0]))
col_name = col_name[0]
col_name = re.findall('\w', str(col_name))[0]
print(col_name)
for cell in col:
try:
if len(str(cell.value)) > max_lenght:
max_lenght = len(cell.value)
except:
pass
adjusted_width = (max_lenght+2)
_ws.column_dimensions[col_name].width = adjusted_width
As alternative you always can try a simpler workaround, using another icon, for example:
<button type="button" style="background:none;border:none">
<span class="fa fa-reorder"></span>
</button>
ref: https://www.w3schools.com/icons/fontawesome_icons_webapp.asp
<button type="button" style="background:none;border:none">
<span class="glyphicon glyphicon-align-justify"></span>
</button>
ref: https://www.w3schools.com/icons/bootstrap_icons_glyphicons.asp
So you gain total control over their color and size:
button span {
/*overwriting*/
color: white;
font-size: 25px;
}
(the button's style applied is just for a quick test):
The root issue in my case was a file conflict in the .settings folder. So, deleting the .settings folder would have resolved the Maven error, but I wanted to keep some of my local configuration files. I resolved the conflict, then tried a Maven update again and it worked.
You can use HEAD request instead of GET. It will only download the header, but not the content. Then you can check the response status from the headers.
For python 2.7.x, you can use httplib
:
import httplib
c = httplib.HTTPConnection('www.example.com')
c.request("HEAD", '')
if c.getresponse().status == 200:
print('web site exists')
or urllib2
:
import urllib2
try:
urllib2.urlopen('http://www.example.com/some_page')
except urllib2.HTTPError, e:
print(e.code)
except urllib2.URLError, e:
print(e.args)
or for 2.7 and 3.x, you can install requests
import requests
request = requests.get('http://www.example.com')
if request.status_code == 200:
print('Web site exists')
else:
print('Web site does not exist')
This is my experience for this problem maybe it could help you :
I copied all folders and files inside the /data
folder to have a backup from my db
.
When I switched to another Computer's Xampp
and I started copying all folders and files copied before from previous phpmyadmin /data
folder.
So when I was done this problem happened for me .
To solve this issue :
1 - I made a backup from /data
folder of phpmyadmin
by copying only only folders have same name with tables I want to make backup .
2 - Uninstall Xampp.
3 - Reinstall Xampp .
4 - Copy all folders Kept in step 1 inside mysql/data
folder . this folders are only database tables and be careful don't touch another file and folder or replace anything when copying.
I had same problem finding out what kind of Hash does Wordpress Uses .
It is wp hash password.
Example
Compare an already hashed password with its plain-text string:
<?php
$wp_hasher = new PasswordHash(8, TRUE);
$password_hashed = '$P$B55D6LjfHDkINU5wF.v2BuuzO0/XPk/';
$plain_password = 'test';
if($wp_hasher->CheckPassword($plain_password, $password_hashed)) {
echo "YES, Matched";
} else {
echo "No, Wrong Password";
}
?>
See These Links: https://codex.wordpress.org/Function_Reference/wp_hash_password
https://developer.wordpress.org/reference/functions/wp_hash_password
It uses PasswordHash, which adds salt to the password and hashes it with 8 passes of MD5.
Use the below code :
from django.forms import model_to_dict
instance = Some.objects.get(slug='something')
kwargs = model_to_dict(instance, exclude=['id'])
new_instance = Some.objects.create(**kwargs)
I will answer this question in terms of AngularFire, Firebase's library for Angular.
Tl;dr: superpowers. :-)
AngularFire's three-way data binding. Angular binds the view and the $scope, i.e., what your users do in the view automagically updates in the local variables, and when your JavaScript updates a local variable the view automagically updates. With Firebase the cloud database also updates automagically. You don't need to write $http.get or $http.put requests, the data just updates.
Five-way data binding, and seven-way, nine-way, etc. I made a tic-tac-toe game using AngularFire. Two players can play together, with the two views updating the two $scopes and the cloud database. You could make a game with three or more players, all sharing one Firebase database.
AngularFire's OAuth2 library makes authorization easy with Facebook, GitHub, Google, Twitter, tokens, and passwords.
Double security. You can set up your Angular routes to require authorization, and set up rules in Firebase about who can read and write data.
There's no back end. You don't need to make a server with Node and Express. Running your own server can be a lot of work, require knowing about security, require that someone do something if the server goes down, etc.
Fast. If your server is in San Francisco and the client is in San Jose, fine. But for a client in Bangalore connecting to your server will be slower. Firebase is deployed around the world for fast connections everywhere.
Another way could be through adding .LNK
to your $PATHEX.
Then just create a shortcut to your executable (ie: yourshortcut.lnk) and put it into any of the directories listed within $PATH.
WARNING NOTE: Know that any .lnk files located in any directories listed in your $PATH are now "PATH'ed" as well. For this reason, I would favor the batch file method mentionned earlier to this method.
static
renders variable local to the file which is generally a good thing, see for example this Wikipedia entry.
You could try using df['column'].str.
and then use any string function. Pandas documentation includes those like split
onclick="this.focus();this.select()"
If you want to maintain input type='number'
(probably for mobile devices to trigger the numeric keyboard) you should use onInput
instead of onChange
to capture your event changes.
Using onInput
fixed a bug where typing text into a number input would bypass the validation I had assigned to it in onChange
. Once I fixed this function to be called in onInput
it triggered in all instances.
Here's an example of what I'm doing:
<input
type='number'
id={`player${index}Score`}
className='form-control'
pattern='[0-9]{0,5}'
onInput={(event) => this.enterScore(event, index)}
value={this.props.scoreLabel(this.state.scores[index])}
/>
I hope this helps!
I came up with a better solution. Use type='tel' along with a pattern regex within the input component itself.
The nuts and bolts of how I wired this up is here:
class Input extends React.Component {
state = {message: '3'};
updateNumber = (e) => {
const val = e.target.value;
// If the current value passes the validity test then apply that to state
if (e.target.validity.valid) this.setState({message: e.target.value});
// If the current val is just the negation sign, or it's been provided an empty string,
// then apply that value to state - we still have to validate this input before processing
// it to some other component or data structure, but it frees up our input the way a user
// would expect to interact with this component
else if (val === '' || val === '-') this.setState({message: val});
}
render() {
return (
<input
type='tel'
value={this.state.message}
onChange={this.updateNumber}
pattern="^-?[0-9]\d*\.?\d*$"
/>
);
}
}
ReactDOM.render(<Input />, document.getElementById('main'));
I have an example of this working on Codepen here
C++17, cross-platform: Using std::filesystem::exists
and std::filesystem::is_regular_file
.
#include <filesystem> // C++17
#include <fstream>
#include <iostream>
namespace fs = std::filesystem;
bool CreateFile(const fs::path& filePath, const std::string& content)
{
try
{
if (fs::exists(filePath))
{
std::cout << filePath << " already exists.";
return false;
}
if (!fs::is_regular_file(filePath))
{
std::cout << filePath << " is not a regular file.";
return false;
}
}
catch (std::exception& e)
{
std::cerr << __func__ << ": An error occurred: " << e.what();
return false;
}
std::ofstream file(filePath);
file << content;
return true;
}
int main()
{
if (CreateFile("path/to/the/file.ext", "Content of the file"))
{
// Your business logic.
}
}
Issue: The Jet OLE DB provider reads a registry key to determine how many rows are to be read to guess the type of the source column. By default, the value for this key is 8. Hence, the provider scans the first 8 rows of the source data to determine the data types for the columns. If any field looks like text and the length of data is more than 255 characters, the column is typed as a memo field. So, if there is no data with a length greater than 255 characters in the first 8 rows of the source, Jet cannot accurately determine the nature of the data type. As the first 8 row length of data in the exported sheet is less than 255 its considering the source length as VARCHAR(255) and unable to read data from the column having more length.
Fix: The solution is just to sort the comment column in descending order. In 2012 onwards we can update the values in Advance tab in the Import wizard.
An even simpler solution is to edit the XML of the activity. Use
android:translationZ=""
label
and checkbox
inputKeeps the selected item opened and togglable.
.collapse{_x000D_
cursor: pointer;_x000D_
display: block;_x000D_
background: #cdf;_x000D_
}_x000D_
.collapse + input{_x000D_
display: none; /* hide the checkboxes */_x000D_
}_x000D_
.collapse + input + div{_x000D_
display:none;_x000D_
}_x000D_
.collapse + input:checked + div{_x000D_
display:block;_x000D_
}
_x000D_
<label class="collapse" for="_1">Collapse 1</label>_x000D_
<input id="_1" type="checkbox"> _x000D_
<div>Content 1</div>_x000D_
_x000D_
<label class="collapse" for="_2">Collapse 2</label>_x000D_
<input id="_2" type="checkbox">_x000D_
<div>Content 2</div>
_x000D_
label
and named radio
inputSimilar to checkboxes, it just closes the already opened one.
Use name="c1" type="radio"
on both inputs.
.collapse{_x000D_
cursor: pointer;_x000D_
display: block;_x000D_
background: #cdf;_x000D_
}_x000D_
.collapse + input{_x000D_
display: none; /* hide the checkboxes */_x000D_
}_x000D_
.collapse + input + div{_x000D_
display:none;_x000D_
}_x000D_
.collapse + input:checked + div{_x000D_
display:block;_x000D_
}
_x000D_
<label class="collapse" for="_1">Collapse 1</label>_x000D_
<input id="_1" type="radio" name="c1"> _x000D_
<div>Content 1</div>_x000D_
_x000D_
<label class="collapse" for="_2">Collapse 2</label>_x000D_
<input id="_2" type="radio" name="c1">_x000D_
<div>Content 2</div>
_x000D_
tabindex
and :focus
Similar to radio
inputs, additionally you can trigger the states using the Tab key.
Clicking outside of the accordion will close all opened items.
.collapse > a{_x000D_
background: #cdf;_x000D_
cursor: pointer;_x000D_
display: block;_x000D_
}_x000D_
.collapse:focus{_x000D_
outline: none;_x000D_
}_x000D_
.collapse > div{_x000D_
display: none;_x000D_
}_x000D_
.collapse:focus div{_x000D_
display: block; _x000D_
}
_x000D_
<div class="collapse" tabindex="1">_x000D_
<a>Collapse 1</a>_x000D_
<div>Content 1....</div>_x000D_
</div>_x000D_
_x000D_
<div class="collapse" tabindex="1">_x000D_
<a>Collapse 2</a>_x000D_
<div>Content 2....</div>_x000D_
</div>
_x000D_
:target
Similar to using radio
input, you can additionally use Tab and ⏎ keys to operate
.collapse a{_x000D_
display: block;_x000D_
background: #cdf;_x000D_
}_x000D_
.collapse > div{_x000D_
display:none;_x000D_
}_x000D_
.collapse > div:target{_x000D_
display:block; _x000D_
}
_x000D_
<div class="collapse">_x000D_
<a href="#targ_1">Collapse 1</a>_x000D_
<div id="targ_1">Content 1....</div>_x000D_
</div>_x000D_
_x000D_
<div class="collapse">_x000D_
<a href="#targ_2">Collapse 2</a>_x000D_
<div id="targ_2">Content 2....</div>_x000D_
</div>
_x000D_
<detail>
and <summary>
tags (pure HTML)You can use HTML5's detail and summary tags to solve this problem without any CSS styling or Javascript. Please note that these tags are not supported by Internet Explorer.
<details>_x000D_
<summary>Collapse 1</summary>_x000D_
<p>Content 1...</p>_x000D_
</details>_x000D_
<details>_x000D_
<summary>Collapse 2</summary>_x000D_
<p>Content 2...</p>_x000D_
</details>
_x000D_
Just add those lines on your custom css mycss.css
table tbody .ui-widget-content {
background: none repeat scroll 0 0 #FFFFFF;
border: 0 solid #FFFFFF;
color: #333333;
}
The rule would be:
0 19 * * 1,3,5
I suggest that you use http://corntab.com for having a very convenient GUI to create your rules in the future :)
If it has to be accessible with a global scope
global.fetch = require("node-fetch");
This is a quick dirty fix, please try to eliminate this usage in production code.
You may do it using xargs
if you like, but the main idea is still the same:
find *.txt | xargs -I{} sh -c "cat {}; echo ''" > finalfile.txt
sed is line based, so I'm not sure why you want to do this with sed. The paradigm is more processing one line at a time( you could also programatically find the # of fields in the CSV and generate your header line with awk) Why not just
echo "c1, c2, ... " >> file
cat testfile.csv >> file
?
SELECT *
FROM sys.objects
WHERE type IN ('FN', 'IF', 'TF')
AND name = 'dgdsgds'
Using nltk.
from nltk.tokenize import sent_tokenize, word_tokenize
sentences = sent_tokenize("This is a string.")
words_in_each_sentence = word_tokenize(sentences)
You may use TweetTokenizer for parsing casual text with emoticons and such.
You can use the beforeSend
callback to set additional parameters (The XMLHTTPRequest
object is passed to it as its only parameter).
Just so you know, this type of cross-domain request will not work in a normal site scenario and not with any other browser. I don't even know what security limitations FF 3.5 imposes as well, just so you don't beat your head against the wall for nothing:
$.ajax({
url: 'http://bar.other',
data: { whatever:'cool' },
type: 'GET',
beforeSend: function(xhr){
xhr.withCredentials = true;
}
});
One more thing to beware of, is that jQuery is setup to normalize browser differences. You may find that further limitations are imposed by the jQuery library that prohibit this type of functionality.
If you prefer a GUI, DB Browser for SQLite will do this with a few clicks.
DB Browser for SQLite is open source and free. For Linux it is available from the repository.
For 2 and more left joins (left joining creatorUser and initiatorUser )
IQueryable<CreateRequestModel> queryResult = from r in authContext.Requests
join candidateUser in authContext.AuthUsers
on r.CandidateId equals candidateUser.Id
join creatorUser in authContext.AuthUsers
on r.CreatorId equals creatorUser.Id into gj
from x in gj.DefaultIfEmpty()
join initiatorUser in authContext.AuthUsers
on r.InitiatorId equals initiatorUser.Id into init
from x1 in init.DefaultIfEmpty()
where candidateUser.UserName.Equals(candidateUsername)
select new CreateRequestModel
{
UserName = candidateUser.UserName,
CreatorId = (x == null ? String.Empty : x.UserName),
InitiatorId = (x1 == null ? String.Empty : x1.UserName),
CandidateId = candidateUser.UserName
};
simple you want to inialize a 2d array and assign a size of array then a example is
public static void main(String args[])
{
char arr[][]; //arr is 2d array name
arr = new char[3][3];
}
//this is a way to inialize a 2d array in java....
I don't know what qualifies as best but zxing has a qr code generator for java, is actively developed, and is liberally licensed.
Granted, I don't have that much experience with different languages, but I gotta say Python. Even though the language it self is okay, I just hate the " " != "\t" etc. indents. Even though the idea of "automatic" scope ending is fine, this just lead to too many errors / time spent pressing space 200 times to use other peoples code :(
Let's break it down:
So the GAC must be a place to store code libraries so they're accessible to all applications running on the machine.
>>> '\\&' == '\&'
True
>>> len('\\&')
2
>>> print('\\&')
\&
Or in other words: '\\&'
only contains one backslash. It's just escaped in the python shell's output for clarity.
in fact, you can, but not that way.
Sub MySub( Optional Byval Counter as Long=1 , Optional Byval Events as Boolean= True)
'code...
End Sub
And you can set the variables differently when calling the sub, or let them at their default values.
Do C-b
, :show
which will show you all your current settings. /green
, nnn
will find you which properties have been set to green, the default. Do C-b
, :set window-status-bg cyan
and the bottom bar should change colour.
List available colours for tmux
You can tell more easily by the titles and the colours as they're actually set in your live session :show
, than by searching through the man
page, in my opinion. It is a very well-written man
page when you have the time though.
If you don't like one of your changes and you can't remember how it was originally set, you can open do a new tmux session. To change settings for good edit ~/.tmux.conf
with a line like set window-status-bg -g cyan
. Here's mine: https://gist.github.com/9083598
This is what i just used, i like how clean it is :-)
$('select').val(function(){
var nextOption = $(this).children(':selected').next();
return $(nextOption).val();
}).change();
Just Simple Answer. FETCH DELETE
function deleteData(item, url) {
return fetch(url + '/' + item, {
method: 'delete'
})
.then(response => response.json());
}
This batch file works both with simple files as well as directories as command line parameters (you can mix them in any order). The loop runs the command ('echo' in this example) on any specified file, if a parameter is a directory it runs the command recursively on each file in it.
@echo off
for /f "delims=" %%f in ('dir %* /a-d /b /s') do echo %%f
On OS X Sierra 10.12, None of the above work.
cd then drag and drop does not work.
No spacing or other fixes work.
I cannot cd into ~/Library Support using any technique that I can find.
Is this a security feature?
I'm going to try disabling SIP and see if it makes a difference.
Bootstrap 4.0
Be aware of all migration changes from Bootstrap 3 to 4. On the table you now need to enable flex box by adding the class d-flex
, and drop the xs
to allow bootstrap to automatically detect the viewport.
<div class="container-fluid">
<table id="productSizes" class="table">
<thead>
<tr class="d-flex">
<th class="col-1">Size</th>
<th class="col-3">Bust</th>
<th class="col-3">Waist</th>
<th class="col-5">Hips</th>
</tr>
</thead>
<tbody>
<tr class="d-flex">
<td class="col-1">6</td>
<td class="col-3">79 - 81</td>
<td class="col-3">61 - 63</td>
<td class="col-5">89 - 91</td>
</tr>
<tr class="d-flex">
<td class="col-1">8</td>
<td class="col-3">84 - 86</td>
<td class="col-3">66 - 68</td>
<td class="col-5">94 - 96</td>
</tr>
</tbody>
</table>
Bootstrap 3.2
Table column width use the same layout as grids do; using col-[viewport]-[size]
. Remember the column sizes should total 12; 1 + 3 + 3 + 5 = 12
in this example.
<thead>
<tr>
<th class="col-xs-1">Size</th>
<th class="col-xs-3">Bust</th>
<th class="col-xs-3">Waist</th>
<th class="col-xs-5">Hips</th>
</tr>
</thead>
Remember to set the <th>
elements rather than the <td>
elements so it sets the whole column. Here is a working BOOTPLY.
Thanks to @Dan for reminding me to always work mobile view (col-xs-*
) first.
An interface defines what a class that inherits from it must implement. In this way, multiple classes can inherit from an interface, and because of that inherticance, you can
for more info, see this http://msdn.microsoft.com/en-us/library/ms173156.aspx
Yes. Use the ternary operator.
condition ? true_expression : false_expression;
The multiple JFrame
approach has been something I've implemented since I began programming Swing apps. For the most part, I did it in the beginning because I didn't know any better. However, as I matured in my experience and knowledge as a developer and as began to read and absorb the opinions of so many more experienced Java devs online, I made an attempt to shift away from the multiple JFrame
approach (both in current projects and future projects) only to be met with... get this... resistance from my clients! As I began implementing modal dialogs to control "child" windows and JInternalFrame
s for separate components, my clients began to complain! I was quite surprised, as I was doing what I thought was best-practice! But, as they say, "A happy wife is a happy life." Same goes for your clients. Of course, I am a contractor so my end-users have direct access to me, the developer, which is obviously not a common scenario.
So, I'm going to explain the benefits of the multiple JFrame
approach, as well as myth-bust some of the cons that others have presented.
JFrame
s, you give your end-user the ability to spread out and control what's on his/her screen. The concept feels "open" and non-constricting. You lose this when you go towards one big JFrame
and a bunch of JInternalFrame
s.JFrame
s. However, I wanted the data entry screen to be a JDialog
whose parent was the data viewer. I made the change, and immediately I received a call from an end-user who relied heavily on the fact that he could minimize or close the viewer and keep the editor open while he referenced another part of the program (or a website, I don't remember). He's not on a multi-monitor, so he needed the entry dialog to be first and something else to be second, with the data viewer completely hidden. This was impossible with a JDialog
and certainly would've been impossible with a JInternalFrame
as well. I begrudgingly changed it back to being separate JFrames
for his sanity, but it taught me an important lesson.JInternalFrame
than a JFrame
. In fact, in my experience, JInternalFrames
offer much less flexibility. I have developed a systematic way of handling the opening & closing of JFrame
s in my apps that really works well. I control the frame almost completely from within the frame's code itself; the creation of the new frame, SwingWorker
s that control the retrieval of data on background threads and the GUI code on EDT, restoring/bringing to front the frame if the user tries to open it twice, etc. All you need to open my JFrame
s is call a public static method open()
and the open method, combined with a windowClosing()
event handles the rest (is the frame already open? is it not open, but loading? etc.) I made this approach a template so it's not difficult to implement for each frame.JFrame
needs more space than a JInternalFrame
, even if you open up 100 JFrame
s, how many more resources would you really be consuming? If your concern is memory leaks because of resources: calling dispose()
frees all resources used by the frame for garbage collection (and, again I say, a JInternalFrame
should invoke exactly the same concern).I've written a lot and I feel like I could write more. Anyways, I hope I don't get down-voted simply because it's an unpopular opinion. The question is clearly a valuable one and I hope I've provided a valuable answer, even if it isn't the common opinion.
A great example of multiple frames/single document per frame (SDI) vs single frame/multiple documents per frame (MDI) is Microsoft Excel. Some of MDI benefits:
SDI (Single-Document Interface, i.e., every window can only have a single document):
MDI (Multiple-Document Interface, i.e., every window can have multiple documents):
mysql_fetch_array()
expects parameter 1 to be resource boolean given in php error on server if you get this error : please select all privileges on your server
. u will get the answer..
Expanding on what Mark Elliot said earlier, the easiest way to get the size of a 2D array given that each array in the array of arrays is of the same size is:
array.length * array[0].length
The SET
clause should come after the table specification.
UPDATE business AS b
INNER JOIN business_geocode g ON b.business_id = g.business_id
SET b.mapx = g.latitude,
b.mapy = g.longitude
WHERE (b.mapx = '' or b.mapx = 0) and
g.latitude > 0
Elaborating on the answer provided by Brian R. Bondy: Here's an example that shows why you can't simply size the output buffer to the number of wide characters in the source string:
#include <windows.h>
#include <stdio.h>
#include <wchar.h>
#include <string.h>
/* string consisting of several Asian characters */
wchar_t wcsString[] = L"\u9580\u961c\u9640\u963f\u963b\u9644";
int main()
{
size_t wcsChars = wcslen( wcsString);
size_t sizeRequired = WideCharToMultiByte( 950, 0, wcsString, -1,
NULL, 0, NULL, NULL);
printf( "Wide chars in wcsString: %u\n", wcsChars);
printf( "Bytes required for CP950 encoding (excluding NUL terminator): %u\n",
sizeRequired-1);
sizeRequired = WideCharToMultiByte( CP_UTF8, 0, wcsString, -1,
NULL, 0, NULL, NULL);
printf( "Bytes required for UTF8 encoding (excluding NUL terminator): %u\n",
sizeRequired-1);
}
And the output:
Wide chars in wcsString: 6
Bytes required for CP950 encoding (excluding NUL terminator): 12
Bytes required for UTF8 encoding (excluding NUL terminator): 18
Using @Marc-François approach Firefox prompted me to download the html file
Finally the following is working for me (using both):
AddType application/x-httpd-php .htm .html
AddHandler x-httpd-php .htm .html
Saw this thread while looking for something else and I know it is super old, but I wanted to add my 2 cents.
NEVER USE VLOOKUP. It's one of the worst performing formulas in excel. Use index match instead. It even works without sorting data, unless you have a -1 or 1 in the end of the match formula (explained more below)
Here is a link with the appropriate formulas.
The Sheet 2 formula would be this: =IF(A2="","",INDEX(Sheet1!B:B,MATCH($A2,Sheet1!$A:$A,0)))
More information on the Index/Match formula
Other fun facts: $ means absolute in a formula. So if you specify $B$1 when filling a formula down or over keeps that same value. If you over $B1, the B remains the same across the formula, but if you fill down, the 1 increases with the row count. Likewise, if you used B$1, filling to the right will increment the B, but keep the reference of row 1.
I also included the use of indirect in the second section. What indirect does is allow you to use the text of another cell in a formula. Since I created a named range sheet1!A:A = ID, sheet1!B:B = Name, and sheet1!C:C=Price, I can use the column name to have the exact same formula, but it uses the column heading to change the search criteria.
Good luck! Hope this helps.
Great Explanation from the link : http://geekswithblogs.net/dlussier/archive/2009/11/21/136454.aspx
Let's First look at MVC
The input is directed at the Controller first, not the view. That input might be coming from a user interacting with a page, but it could also be from simply entering a specific url into a browser. In either case, its a Controller that is interfaced with to kick off some functionality.
There is a many-to-one relationship between the Controller and the View. That’s because a single controller may select different views to be rendered based on the operation being executed.
There is one way arrow from Controller to View. This is because the View doesn’t have any knowledge of or reference to the controller.
The Controller does pass back the Model, so there is knowledge between the View and the expected Model being passed into it, but not the Controller serving it up.
MVP – Model View Presenter
Now let’s look at the MVP pattern. It looks very similar to MVC, except for some key distinctions:
The input begins with the View, not the Presenter.
There is a one-to-one mapping between the View and the associated Presenter.
The View holds a reference to the Presenter. The Presenter is also reacting to events being triggered from the View, so its aware of the View its associated with.
The Presenter updates the View based on the requested actions it performs on the Model, but the View is not Model aware.
MVVM – Model View View Model
So with the MVC and MVP patterns in front of us, let’s look at the MVVM pattern and see what differences it holds:
The input begins with the View, not the View Model.
While the View holds a reference to the View Model, the View Model has no information about the View. This is why its possible to have a one-to-many mapping between various Views and one View Model…even across technologies. For example, a WPF View and a Silverlight View could share the same View Model.
You should also be able to use..
swfobject.getFlashPlayerVersion().major === 0
with the swfobject-Plugin.
This is really fast and dirty, but it gets the job done: jsFiddle
#img1, #img2, #img3, #img4 {
width:100%;
height:100%;
position:fixed;
z-index:-1;
animation-name: test;
animation-duration: 5s;
opacity:0;
}
#img2 {
animation-delay:5s;
-webkit-animation-delay:5s
}
#img3 {
animation-delay:10s;
-webkit-animation-delay:10s
}
#img4 {
animation-delay:15s;
-webkit-animation-delay:15s
}
@-webkit-keyframes test {
0% {
opacity: 0;
}
50% {
opacity: 1;
}
100% {
}
}
@keyframes test {
0% {
opacity: 0;
}
50% {
opacity: 1;
}
100% {
}
}
I'm working on something similar for my site using jQuery, but the transition is triggered when the user scrolls down the page - jsFiddle
Using require.js you can do the same thing in a safer way. You can just define your dependency on jquery and then execute the code you want using the dependency when it is loaded without polluting the namespace:
I generally recommend this library for managing all dependencies on Javascript. It's simple and allows for an efficient optimization of resource loading. However there's some precautions you may need to take when using it with JQuery . My favourite way to deal with them is explained in this github repo and reflected by the following code sample:
<title>jQuery+RequireJS Sample Page</title>
<script src="scripts/require.js"></script>
<script>
require({
baseUrl: 'scripts',
paths: {
jquery: 'https://ajax.googleapis.com/ajax/libs/jquery/1.6.0/jquery.min'
},
priority: ['jquery']
}, ['main']);
</script>
Some methods are given below to get machine name or computer name
Method 1:-
string MachineName1 = Environment.MachineName;
Method 2:-
string MachineName2 = System.Net.Dns.GetHostName();
Method 3:-
string MachineName3 = Request.ServerVariables["REMOTE_HOST"].ToString();
Method 4:-
string MachineName4 = System.Environment.GetEnvironmentVariable("COMPUTERNAME");
For more see my blog
Use the pandas.DataFrame.astype(<type>)
function to manipulate column dtypes.
>>> df = pd.DataFrame(np.random.rand(3,4), columns=list("ABCD"))
>>> df
A B C D
0 0.542447 0.949988 0.669239 0.879887
1 0.068542 0.757775 0.891903 0.384542
2 0.021274 0.587504 0.180426 0.574300
>>> df[list("ABCD")] = df[list("ABCD")].astype(int)
>>> df
A B C D
0 0 0 0 0
1 0 0 0 0
2 0 0 0 0
EDIT:
To handle missing values:
>>> df
A B C D
0 0.475103 0.355453 0.66 0.869336
1 0.260395 0.200287 NaN 0.617024
2 0.517692 0.735613 0.18 0.657106
>>> df[list("ABCD")] = df[list("ABCD")].fillna(0.0).astype(int)
>>> df
A B C D
0 0 0 0 0
1 0 0 0 0
2 0 0 0 0
I made the mistake by doing dd/die/dump in the index.php
file. This causes the system to not regenerate the configs.
Just do dump in view files will do. The changes to .env
file update instantly.
You can specialize an encoder for object creation: http://docs.python.org/2/library/json.html
import json
class ComplexEncoder(json.JSONEncoder):
def default(self, obj):
if isinstance(obj, complex):
return {"real": obj.real,
"imag": obj.imag,
"__class__": "complex"}
return json.JSONEncoder.default(self, obj)
print json.dumps(2 + 1j, cls=ComplexEncoder)
The operating system is also a program, so we can also create our own program by creating from scratch or changing (limiting or adding) features of one of the small operating systems, and then run it during the boot process (using an ISO image).
For example, this page can be used as a starting point:
How to write a simple operating system
Here, the entire Operating System fit entirely in a 512-byte boot sector (MBR)!
Such or similar simple OS can be used to create a simple framework that will allow us:
make the bootloader load subsequent sectors on the disk into RAM, and jump to that point to continue execution. Or you could read up on FAT12, the filesystem used on floppy drives, and implement that.
There are many possibilities, however. For for example to see a bigger x86 assembly language OS we can explore the MykeOS, x86 operating system which is a learning tool to show the simple 16-bit, real-mode OSes work, with well-commented code and extensive documentation.
Other common type of programs that run without the operating system are also Boot Loaders. We can create a program inspired by such a concept for example using this site:
How to develop your own Boot Loader
The above article presents also the basic architecture of such a programs:
- Correct loading to the memory by 0000:7C00 address.
- Calling the BootMain function that is developed in the high-level language.
- Show “”Hello, world…”, from low-level” message on the display.
As we can see, this architecture is very flexible and allows us to implement any program, not necessarily a boot loader.
In particular, it shows how to use the "mixed code" technique thanks to which it is possible to combine high-level constructions (from C or C++) with low-level commands (from Assembler). This is a very useful method, but we have to remember that:
to build the program and obtain executable file you will need the compiler and linker of Assembler for 16-bit mode. For C/C++ you will need only the compiler that can create object files for 16-bit mode.
The article shows also how to see the created program in action and how to perform its testing and debug.
The above examples used the fact of loading the sector MBR on the data medium. However, we can go deeper into the depths by plaing for example with the UEFI applications:
Beyond loading an OS, UEFI can run UEFI applications, which reside as files on the EFI System Partition. They can be executed from the UEFI command shell, by the firmware's boot manager, or by other UEFI applications. UEFI applications can be developed and installed independently of the system manufacturer.
A type of UEFI application is an OS loader such as GRUB, rEFInd, Gummiboot, and Windows Boot Manager; which loads an OS file into memory and executes it. Also, an OS loader can provide a user interface to allow the selection of another UEFI application to run. Utilities like the UEFI shell are also UEFI applications.
If we would like to start creating such programs, we can, for example, start with these websites:
Programming for EFI: Creating a "Hello, World" Program / UEFI Programming - First Steps
It is well known that there is a whole group of malicious software (which are programs) that are running before the operating system starts.
A huge group of them operate on the MBR sector or UEFI applications, just like the all above solutions, but there are also those that use another entry point such as the Volume Boot Record (VBR) or the BIOS:
There are at least four known BIOS attack viruses, two of which were for demonstration purposes.
or perhaps another one too.
Bootkits have evolved from Proof-of-Concept development to mass distribution and have now effectively become open-source software.
I also think that in this context it is also worth mentioning that there are various forms of booting the operating system (or the executable program intended for this). There are many, but I would like to pay attention to loading the code from the network using Network Boot option (PXE), which allows us to run the program on the computer regardless of its operating system and even regardless of any storage medium that is directly connected to the computer:
ECMAScript 6 introduced String.prototype.includes
:
const string = "foo";_x000D_
const substring = "oo";_x000D_
_x000D_
console.log(string.includes(substring));
_x000D_
includes
doesn’t have Internet Explorer support, though. In ECMAScript 5 or older environments, use String.prototype.indexOf
, which returns -1 when a substring cannot be found:
var string = "foo";_x000D_
var substring = "oo";_x000D_
_x000D_
console.log(string.indexOf(substring) !== -1);
_x000D_
In my case, it was the password that contained some characters like '
, after changing it the server started without problems.
First, create a dump on server A.
A$ redis-cli
127.0.0.1:6379> CONFIG GET dir
1) "dir"
2) "/var/lib/redis/"
127.0.0.1:6379> SAVE
OK
This ensures dump.rdb
is completely up-to-date, and shows us where it is stored (/var/lib/redis/dump.rdb
in this case). dump.rdb
is also periodically written to disk automatically.
Next, copy it to server B:
A$ scp /var/lib/redis/dump.rdb myuser@B:/tmp/dump.rdb
Stop the Redis server on B, copy dump.rdb (ensuring permissions are the same as before), then start.
B$ sudo service redis-server stop
B$ sudo cp /tmp/dump.rdb /var/lib/redis/dump.rdb
B$ sudo chown redis: /var/lib/redis/dump.rdb
B$ sudo service redis-server start
The version of Redis on B must be greater or equal than that of A, or you may hit compatibility issues.
You could do something like this
dict = [{
"id": 1,
"name": "Doom Hammer"
},
{
"id": 2,
"name": "Rings ov Saturn"
}
]
for x in dict:
if x["id"] == 2:
print(x["name"])
Thats what i use to find the objects in a long array of objects.
By dictionary comprehension
d = { line.split()[0] : line.split()[1] for line in open("file.txt") }
Or By pandas
import pandas as pd
d = pd.read_csv("file.txt", delimiter=" ", header = None).to_dict()[0]
Thanks to the article above.
In my case, i have this issue with my WPF project in VS.Net 2008. After going through this article, i was realizing that the assembly used in the web service is different version of assembly used on client.
It works just fine after updating the assembly on the client.
The equals()
of arrays is inherited from Object
, so it does not look at the contents of the arrrays, it only considers each array equal to itself.
The Arrays.equals()
methods do compare the arrays' contents. There's overloads for all primitive types, and the one for objects uses the objects' own equals()
methods.
Don't let white space fool you. Just test this in a console browser.
Use native javascript. Here is and example with two 'ul' sets with the same class. You don't need to have your 'ul' list all in one line to avoid white space just use your array count to jump over white space.
How to get around white space with querySelector()
then childNodes[]
js fiddle link: https://jsfiddle.net/aparadise/56njekdo/
var y = document.querySelector('.list');
var myNode = y.childNodes[11].style.backgroundColor='red';
<ul class="list">
<li>8</li>
<li>9</li>
<li>100</li>
</ul>
<ul class="list">
<li>ABC</li>
<li>DEF</li>
<li>XYZ</li>
</ul>
This method is a bit different, it provided me with a bit more flexibility than the previous answer.
By making it into an ordered factor, you can use it nicely in arrange
and such. I used reorder.factor from the gdata
package.
df <- data.frame(name=letters[1:4], value=c(rep(TRUE, 2), rep(FALSE, 2)))
target <- c("b", "c", "a", "d")
require(gdata)
df$name <- reorder.factor(df$name, new.order=target)
Next, use the fact that it is now ordered:
require(dplyr)
df %>%
arrange(name)
name value
1 b TRUE
2 c FALSE
3 a TRUE
4 d FALSE
If you want to go back to the original (alphabetic) ordering, just use as.character()
to get it back to the original state.
Session in Asp.net:
1.Maintains the data accross all over the application.
2.Persists the data if current session is alive. If we need some data to accessible from multiple controllers acitons and views the session is the way to store and retreive data.
3.Sessions are server side files that contains user information. [Sessions are unique identifier that maps them to specific users]
Translating that to Web Servers: The server will store the pertinent information in the session object, and create a session ID which it will send back to the client in a cookie. When the client sends back the cookie, the server can simply look up the session object using the ID. So, if you delete the cookie, the session will be lost.
If you are referring to com.example.app, no I understand you can't it would be considered a new app
Go to the Ant website and download. This way, you have a copy of Ant outside of Eclipse. I recommend to put it under the C:\ant
directory. This way, it doesn't have any spaces in the directory names. In your System Control Panel, set the Environment Variable ANT_HOME
to this directory, then pre-pend to the System PATH
variable, %ANT_HOME%\bin
. This way, you don't have to put in the whole directory name.
Assuming you did the above, try this:
C:\> cd \Silk4J\Automation\iControlSilk4J
C:\Silk4J\Automation\iControlSilk4J> ant -d build
This will do several things:
build.xml
in the directory where it exists, you don't end up with the possibility that your Ant build can't locate a particular directory.The -d
will print out a lot of output, so you might want to capture it, or set your terminal buffer to something like 99999
, and run cls
first to clear out the buffer. This way, you'll capture all of the output from the beginning in the terminal buffer.
Let's see how Ant should be executing. You didn't specify any targets to execute, so Ant should be taking the default build
target. Here it is:
<target depends="build-subprojects,build-project" name="build"/>
The build
target does nothing itself. However, it depends upon two other targets, so these will be called first:
The first target is build-subprojects
:
<target name="build-subprojects"/>
This does nothing at all. It doesn't even have a dependency.
The next target specified is build-project
does have code:
<target depends="init" name="build-project">
This target does contain tasks, and some dependent targets. Before build-project
executes, it will first run the init
target:
<target name="init">
<mkdir dir="bin"/>
<copy includeemptydirs="false" todir="bin">
<fileset dir="src">
<exclude name="**/*.java"/>
</fileset>
</copy>
</target>
This target creates a directory called bin
, then copies all files under the src
tree with the suffix *.java
over to the bin
directory. The includeemptydirs
mean that directories without non-java code will not be created.
Ant uses a scheme to do minimal work. For example, if the bin
directory is created, the <mkdir/>
task is not executed. Also, if a file was previously copied, or there are no non-Java files in your src
directory tree, the <copy/>
task won't run. However, the init
target will still be executed.
Next, we go back to our previous build-project
target:
<target depends="init" name="build-project">
<echo message="${ant.project.name}: ${ant.file}"/>
<javac debug="true" debuglevel="${debuglevel}" destdir="bin" source="${source}" target="${target}">
<src path="src"/>
<classpath refid="iControlSilk4J.classpath"/>
</javac>
</target>
Look at this line:
<echo message="${ant.project.name}: ${ant.file}"/>
That should have always executed. Did your output print:
[echo] iControlSilk4J: C:\Silk4J\Automation\iControlSilk4J\build.xml
Maybe you didn't realize that was from your build.
After that, it runs the <javac/>
task. That is, if there's any files to actually compile. Again, Ant tries to avoid work it doesn't have to do. If all of the *.java
files have previously been compiled, the <javac/>
task won't execute.
And, that's the end of the build. Your build might not have done anything simply because there was nothing to do. You can try running the clean
task, and then build
:
C:\Silk4J\Automation\iControlSilk4J> ant -d clean build
However, Ant usually prints the target being executed. You should have seen this:
init:
build-subprojects:
build-projects:
[echo] iControlSilk4J: C:\Silk4J\Automation\iControlSilk4J\build.xml
build:
Build Successful
Note that the targets are all printed out in order they're executed, and the tasks are printed out as they are executed. However, if there's nothing to compile, or nothing to copy, then you won't see these tasks being executed. Does this look like your output? If so, it could be there's nothing to do.
bin
directory already exists, <mkdir/>
isn't going to execute.src
, or they have already been copied into bin
, the <copy/>
task won't execute.src
directory, or they have already been compiled, the <java/>
task won't run.If you look at the output from the -d
debug, you'll see Ant looking at a task, then explaining why a particular task wasn't executed. Plus, the debug option will explain how Ant decides what tasks to execute.
See if that helps.
You could try jsawk as suggested in this answer.
Really you could whip up a quick python script to do this though.
I got the similar error when install bundle
sudo apt-get install ruby-dev
Works great for me and solve the problem Mint 16 ruby1.9.3
There's no special case for String
, because String
is an ordinary referential type on JVM, in contrast with Java primitives (int
, double
, ...) -- storing them in a reference Array<T>
requires boxing them into objects like Integer
and Double
. The purpose of specialized arrays like IntArray
in Kotlin is to store non-boxed primitives, getting rid of boxing and unboxing overhead (the same as Java int[]
instead of Integer[]
).
You can use Array<String>
(and Array<String?>
for nullables), which is equivalent to String[]
in Java:
val stringsOrNulls = arrayOfNulls<String>(10) // returns Array<String?>
val someStrings = Array<String>(5) { "it = $it" }
val otherStrings = arrayOf("a", "b", "c")
See also: Arrays in the language reference
If the problem allows it, try with EXISTS, since it's optimized to end as soon as a result is found (And don't buffer any response), so, if you are just trying to normalize data for a WHERE clause like this
SELECT FROM SOMETHING S WHERE S.ID IN ( SELECT DISTINCT DCR.SOMETHING_ID FROM DIFF_CARDINALITY_RELATIONSHIP DCR ) -- to keep same cardinality
A faster response would be:
SELECT FROM SOMETHING S WHERE EXISTS ( SELECT 1 FROM DIFF_CARDINALITY_RELATIONSHIP DCR WHERE DCR.SOMETHING_ID = S.ID )
This isn't always possible but when available you will see a faster response.
Your change should work. However, there are potentially few php.ini configuration files with the 'xampp' stack. Try to identify whether or not there's an 'apache' specific php.ini. One potential location is:
C:\xampp\apache\bin\php.ini
As in any unix-based environment, you can use the sudo
command:
$ sudo script-name
It will ask for your password (your own, not a separate root
password).
Navigate to the folder on your new machine you want to download from git on git bash.
Use below command to download the code from any branch you like
git clone 'git ssh url' -b 'Branch Name'
It will download the respective branch code.
Here is a small example you can run to test it:
[1,2,3,4,5,6,7,8,9].forEach(function(n){
var sum = 0;
console.log('Start for:' + n);
for (var i = 0; i < ( 10 - n) * 100000000; i++)
sum++;
console.log('Ended for:' + n, sum);
});
It will produce something like this(if it takes too less/much time, increase/decrease the number of iterations):
(index):48 Start for:1
(index):52 Ended for:1 900000000
(index):48 Start for:2
(index):52 Ended for:2 800000000
(index):48 Start for:3
(index):52 Ended for:3 700000000
(index):48 Start for:4
(index):52 Ended for:4 600000000
(index):48 Start for:5
(index):52 Ended for:5 500000000
(index):48 Start for:6
(index):52 Ended for:6 400000000
(index):48 Start for:7
(index):52 Ended for:7 300000000
(index):48 Start for:8
(index):52 Ended for:8 200000000
(index):48 Start for:9
(index):52 Ended for:9 100000000
(index):45 [Violation] 'load' handler took 7285ms
Be aware that the function File.GetLastWriteTime does not always work as expected, the values are sometimes not instantaneously updated by the OS. You may get an old Timestamp, even if the file has been modified right before.
The behaviour may vary between OS versions. For example, this unit test worked well every time on my developer machine, but it always fails on our build server.
[TestMethod]
public void TestLastModifiedTimeStamps()
{
var tempFile = Path.GetTempFileName();
var lastModified = File.GetLastWriteTime(tempFile);
using (new FileStream(tempFile, FileMode.Create, FileAccess.Write, FileShare.None))
{
}
Assert.AreNotEqual(lastModified, File.GetLastWriteTime(tempFile));
}
See File.GetLastWriteTime seems to be returning 'out of date' value
Your options:
a) live with the occasional omissions.
b) Build up an active component realising the observer pattern (eg. a tcp server client structure), communicating the changes directly instead of writing / reading files. Fast and flexible, but another dependency and a possible point of failure (and some work, of course).
c) Ensure the signalling process by replacing the content of a dedicated signal file that other processes regularly read. It´s not that smart as it´s a polling procedure and has a greater overhead than calling File.GetLastWriteTime, but if not checking the content from too many places too often, it will do the work.
/// <summary>
/// type to set signals or check for them using a central file
/// </summary>
public class FileSignal
{
/// <summary>
/// path to the central file for signal control
/// </summary>
public string FilePath { get; private set; }
/// <summary>
/// numbers of retries when not able to retrieve (exclusive) file access
/// </summary>
public int MaxCollisions { get; private set; }
/// <summary>
/// timespan to wait until next try
/// </summary>
public TimeSpan SleepOnCollisionInterval { get; private set; }
/// <summary>
/// Timestamp of the last signal
/// </summary>
public DateTime LastSignal { get; private set; }
/// <summary>
/// constructor
/// </summary>
/// <param name="filePath">path to the central file for signal control</param>
/// <param name="maxCollisions">numbers of retries when not able to retrieve (exclusive) file access</param>
/// <param name="sleepOnCollisionInterval">timespan to wait until next try </param>
public FileSignal(string filePath, int maxCollisions, TimeSpan sleepOnCollisionInterval)
{
FilePath = filePath;
MaxCollisions = maxCollisions;
SleepOnCollisionInterval = sleepOnCollisionInterval;
LastSignal = GetSignalTimeStamp();
}
/// <summary>
/// constructor using a default value of 50 ms for sleepOnCollisionInterval
/// </summary>
/// <param name="filePath">path to the central file for signal control</param>
/// <param name="maxCollisions">numbers of retries when not able to retrieve (exclusive) file access</param>
public FileSignal(string filePath, int maxCollisions): this (filePath, maxCollisions, TimeSpan.FromMilliseconds(50))
{
}
/// <summary>
/// constructor using a default value of 50 ms for sleepOnCollisionInterval and a default value of 10 for maxCollisions
/// </summary>
/// <param name="filePath">path to the central file for signal control</param>
public FileSignal(string filePath) : this(filePath, 10)
{
}
private Stream GetFileStream(FileAccess fileAccess)
{
var i = 0;
while (true)
{
try
{
return new FileStream(FilePath, FileMode.Create, fileAccess, FileShare.None);
}
catch (Exception e)
{
i++;
if (i >= MaxCollisions)
{
throw e;
}
Thread.Sleep(SleepOnCollisionInterval);
};
};
}
private DateTime GetSignalTimeStamp()
{
if (!File.Exists(FilePath))
{
return DateTime.MinValue;
}
using (var stream = new FileStream(FilePath, FileMode.Open, FileAccess.Read, FileShare.None))
{
if(stream.Length == 0)
{
return DateTime.MinValue;
}
using (var reader = new BinaryReader(stream))
{
return DateTime.FromBinary(reader.ReadInt64());
};
}
}
/// <summary>
/// overwrites the existing central file and writes the current time into it.
/// </summary>
public void Signal()
{
LastSignal = DateTime.Now;
using (var stream = new FileStream(FilePath, FileMode.Create, FileAccess.Write, FileShare.None))
{
using (var writer = new BinaryWriter(stream))
{
writer.Write(LastSignal.ToBinary());
}
}
}
/// <summary>
/// returns true if the file signal has changed, otherwise false.
/// </summary>
public bool CheckIfSignalled()
{
var signal = GetSignalTimeStamp();
var signalTimestampChanged = LastSignal != signal;
LastSignal = signal;
return signalTimestampChanged;
}
}
Some tests for it:
[TestMethod]
public void TestSignal()
{
var fileSignal = new FileSignal(Path.GetTempFileName());
var fileSignal2 = new FileSignal(fileSignal.FilePath);
Assert.IsFalse(fileSignal.CheckIfSignalled());
Assert.IsFalse(fileSignal2.CheckIfSignalled());
Assert.AreEqual(fileSignal.LastSignal, fileSignal2.LastSignal);
fileSignal.Signal();
Assert.IsFalse(fileSignal.CheckIfSignalled());
Assert.AreNotEqual(fileSignal.LastSignal, fileSignal2.LastSignal);
Assert.IsTrue(fileSignal2.CheckIfSignalled());
Assert.AreEqual(fileSignal.LastSignal, fileSignal2.LastSignal);
Assert.IsFalse(fileSignal2.CheckIfSignalled());
}
This is easily the simplest solution. For those who don't know how to do this:
Install the C++ compiler https://visualstudio.microsoft.com/downloads/#build-tools-for-visual-studio-2019
Go to the installation folder (In my case it is): C:\Program Files (x86)\Microsoft Visual C++ Build Tools
Open Visual C++ 2015 x86 x64 Cross Build Tools Command Prompt
Type: pip install package_name
You can't have duplicate ids. Ids are supposed to be unique. You might want to use a specialized class instead.
You are right. The code you've provided only checks if there is a network connection. The best way to check if there is an active Internet connection is to try and connect to a known server via http.
public static boolean hasActiveInternetConnection(Context context) {
if (isNetworkAvailable(context)) {
try {
HttpURLConnection urlc = (HttpURLConnection) (new URL("http://www.google.com").openConnection());
urlc.setRequestProperty("User-Agent", "Test");
urlc.setRequestProperty("Connection", "close");
urlc.setConnectTimeout(1500);
urlc.connect();
return (urlc.getResponseCode() == 200);
} catch (IOException e) {
Log.e(LOG_TAG, "Error checking internet connection", e);
}
} else {
Log.d(LOG_TAG, "No network available!");
}
return false;
}
Of course you can substitute the http://www.google.com
URL for any other server you want to connect to, or a server you know has a good uptime.
As Tony Cho also pointed out in this comment below, make sure you don't run this code on the main thread, otherwise you'll get a NetworkOnMainThread exception (in Android 3.0 or later). Use an AsyncTask or Runnable instead.
If you want to use google.com you should look at Jeshurun's modification. In his answer he modified my code and made it a bit more efficient. If you connect to
HttpURLConnection urlc = (HttpURLConnection)
(new URL("http://clients3.google.com/generate_204")
.openConnection());
and then check the responsecode for 204
return (urlc.getResponseCode() == 204 && urlc.getContentLength() == 0);
then you don't have to fetch the entire google home page first.
There are numerous Flexbox bugs in IE11 and other browsers - see flexbox on Can I Use -> Known Issues, where the following are listed under IE11:
display: flex
and flex-direction: column
will not properly calculate their flexed childrens' sizes if the container has min-height
but no explicit height
propertymin-height
is usedAlso see Philip Walton's Flexbugs list of issues and workarounds.
In 2017, the thing closest to Javadoc would probably DocFx which was developed by Microsoft and comes as a Commmand-Line-Tool as well as a VS2017 plugin.
It's still a little rough around the edges but it looks promising.
Another alternative would be Wyam which has a documentation recipe suitable for net aplications. Look at the cake documentation for an example.
I have a solution for this. First thing that add is already having a string value as input() function by default takes the input as string. Second thing that you can use append method to append value of add variable in your list.
Please do check my code I have done some modification : - {1} You can enter command in capital or small or mix {2} If user entered wrong command then your program will ask to input command again
inventory = ["sword","potion","armour","bow"] print(inventory) print("\ncommands : use (remove item) and pickup (add item)") selection=input("choose a command [use/pickup] : ") while True: if selection.lower()=="use": print(inventory) remove_item=input("What do you want to use? ") inventory.remove(remove_item) print(inventory) break
elif selection.lower()=="pickup":
print(inventory)
add_item=input("What do you want to pickup? ")
inventory.append(add_item)
print(inventory)
break
else:
print("Invalid Command. Please check your input")
selection=input("Once again choose a command [use/pickup] : ")
You left off the /
(pattern delimiter) and $
(match end string).
preg_match("/^[a-zA-Z0-9]+$/", $value)
This is how dynamic languages work. It is not always a good thing though, especially if the documentation is poor - anyone tried to use a poorly documented python framework? Sometimes you have to revert to reading the source.
Here are some strategies to avoid problems with duck typing:
Also, one of the most important points:
There should only be a few well-defined and documented types being passed around. Anything else should be obvious by looking at the code: Don't have weird parameter types coming from far away that you can't figure out by looking in the vicinity of the code...
Related, (and also related to docstrings), there is a technique in python called doctests
. Use that to document how your methods are expected to be used - and have nice unit test coverage at the same time!
Additionally, in order for ForeColor to be obeyed on a TextBox marked ReadOnly, you must explicitly set the BackColor. If you want to have it still use the default BackColor, you have to make the set explicit, as the designer is too smart for its own good here. It is sufficient to set the BackColor to its current value. I do this in the Load event for the form, like so:
private void FormFoo_Load(...) {
txtFoo.BackColor = txtFoo.BackColor;
}
using Excel = Microsoft.Office.Interop.Excel;
// Your code...
yourWorksheet.Range[yourWorksheet.Cells[rowBegin,colBegin], yourWorksheet.Cells[yourWorksheet.rowEnd, colEnd]].Merge();
Row and Col start at 1.
Use ThisWorkbook
which will refer to the original workbook which holds the code.
Alternatively at code start
Dim Wb As Workbook
Set Wb = ActiveWorkbook
sample code that activates all open books before returning to ThisWorkbook
Sub Test()
Dim Wb As Workbook
Dim Wb2 As Workbook
Set Wb = ThisWorkbook
For Each Wb2 In Application.Workbooks
Wb2.Activate
Next
Wb.Activate
End Sub
Because the operating system may not do so. The flush operation forces the file data into the file cache in RAM, and from there it's the OS's job to actually send it to the disk.
That's not possible using the built-in Array.prototype.map
. However, you could use a simple for
-loop instead, if you do not intend to map
any values:
var hasValueLessThanTen = false;
for (var i = 0; i < myArray.length; i++) {
if (myArray[i] < 10) {
hasValueLessThanTen = true;
break;
}
}
Or, as suggested by @RobW
, use Array.prototype.some
to test if there exists at least one element that is less than 10. It will stop looping when some element that matches your function is found:
var hasValueLessThanTen = myArray.some(function (val) {
return val < 10;
});
If you don't have the token at the time of the call is made, You will have to make two calls, one to get the token and the other to extract the token form the response, pay attention to
grep token | cut -d, -f1 | cut -d\" -f4
as it is the part which is dealing with extracting the token from the response.
echo "Getting token response and extracting token"
def token = sh (returnStdout: true, script: """
curl -S -i -k -X POST https://www.example.com/getToken -H \"Content-Type: application/json\" -H \"Accept: application/json\" -d @requestFile.json | grep token | cut -d, -f1 | cut -d\\" -f4
""").split()
After extracting the token you can use the token to make subsequent calls as follows.
echo "Token : ${token[-1]}"
echo "Making calls using token..."
curl -S -i -k -H "Accept: application/json" -H "Content-Type: application/json" -H "Authorization: Bearer ${token[-1]}" https://www.example.com/api/resources
Just found that issue corresponding to my problem. Using HandlerMapping constants I was able to wrote a small utility for that purpose:
/**
* Extract path from a controller mapping. /controllerUrl/** => return matched **
* @param request incoming request.
* @return extracted path
*/
public static String extractPathFromPattern(final HttpServletRequest request){
String path = (String) request.getAttribute(
HandlerMapping.PATH_WITHIN_HANDLER_MAPPING_ATTRIBUTE);
String bestMatchPattern = (String ) request.getAttribute(HandlerMapping.BEST_MATCHING_PATTERN_ATTRIBUTE);
AntPathMatcher apm = new AntPathMatcher();
String finalPath = apm.extractPathWithinPattern(bestMatchPattern, path);
return finalPath;
}
I've had this problem before too and I think I found the answer.
If you are using a button to run the macro, it is likely linked to a different macro, perhaps a save as version of what you are currently working in and you might not even realize it. Try running the macro directly from VBA (F5) instead of running it with the button. My guess is that will work. You just have to reassign the macro on the button to the one you actually want to run.
I am python novice so this may not be the most efficient method but, if I understand the intent of the question correctly, steps listed below worked for me.
>>> import numpy as np
>>> Data = np.random.random((100, 100, 1000, 2))
>>> result = np.empty(Data.shape[:-1], dtype=complex)
>>> result.real = Data[...,0]; result.imag = Data[...,1]
>>> print Data[0,0,0,0], Data[0,0,0,1], result[0,0,0]
0.0782889873474 0.156087854837 (0.0782889873474+0.156087854837j)
So many good answers already. Backbone js helps to keep the code organised. Changing the model/collection takes care of the view rendering automaticallty which reduces lot of development overhead.
Even though it provides maximum flexibility for development, developers should be careful to destroy the models and remove the views properly. Otherwise there may be memory leak in the application.
There are cross browser issues here.
A typical non-jQuery event handler would be something like this :
function doSomething(evt) {
evt = evt || window.event;
var target = evt.target || evt.srcElement;
if (target.nodeType == 3) // defeat Safari bug
target = target.parentNode;
//do stuff here
}
jQuery normalises evt
and makes the target available as this
in event handlers, so a typical jQuery event handler would be something like this :
function doSomething(evt) {
var $target = $(this);
//do stuff here
}
A hybrid event handler which uses jQuery's normalised evt
and a POJS target would be something like this :
function doSomething(evt) {
var target = evt.target || evt.srcElement;
if (target.nodeType == 3) // defeat Safari bug
target = target.parentNode;
//do stuff here
}
you can use,
let wg = Float(wage.text!)
If you want to round the float to 2 decimal places:
let wg = Float(String(format: "%.2f",wage.text!)
According to git stash questions, after fixing the conflict, git add <file>
is the right course of action.
It was after reading this comment that I understood that the changes are automatically added to the index (by design). That's why git add <file>
completes the conflict resolution process.
I've used mutagen to edit tags in media files before. The nice thing about mutagen is that it can handle other formats, such as mp4, FLAC etc. I've written several scripts with a lot of success using this API.
You could use former Instantiations product CodePro AnalytiX. This eclipse plugin provides you suchlike statistics in code metrics view. This is provided by Google free of charge.
Java objects reside in an area called the heap, while metadata such as class objects and method objects reside in the permanent generation or Perm Gen area. The permanent generation is not part of the heap.
The heap is created when the JVM starts up and may increase or decrease in size while the application runs. When the heap becomes full, garbage is collected. During the garbage collection objects that are no longer used are cleared, thus making space for new objects.
-Xmssize Specifies the initial heap size.
-Xmxsize Specifies the maximum heap size.
-XX:MaxPermSize=size Sets the maximum permanent generation space size. This option was deprecated in JDK 8, and superseded by the -XX:MaxMetaspaceSize option.
Sizes are expressed in bytes. Append the letter k
or K
to indicate kilobytes, m
or M
to indicate megabytes, g
or G
to indicate gigabytes.
How is the java memory pool divided?
Java (JVM) Memory Model – Memory Management in Java
I've always used FMOD for things like this because it's free for non-commercial use and works well.
That said, I'd gladly switch to something that's smaller (FMOD is ~300k) and open-source. Super bonus points if it's fully managed so that I can compile / merge it with my .exe and not have to take extra care to get portability to other platforms...
(FMOD does portability too but you'd obviously need different binaries for different platforms)
Single line comments start with a hash symbol, everything to the right of the #
will be ignored:
# Comment Here
In PowerShell 2.0 and above multi-line block comments can be used:
<#
Multi
Line
#>
You could use block comments to embed comment text within a command:
Get-Content -Path <# configuration file #> C:\config.ini
Note: Because PowerShell supports Tab Completion you need to be careful about copying and pasting Space + TAB
before comments.
List last updated on December 1, 2020:
As of November 30, 2020, AWS now has EC2 Mac instances:
We previously used and had good experiences with:
Here are some other sites that I am aware of:
When we were with MacStadium, we loved them. We had great connectivity/uptime. When I've needed hands-on support to plug in a Time Machine backup, they've been great. They performed a seamless upgrade to better hardware for us over one weekend (when we could afford a bit of downtime), and that went off without a hitch. Highly recommended. (Not affiliated - just happy).
In April of 2020, we stopped using MacStadium, simply because we no longer needed a Mac server. If I need another Mac host, I would be happy to go back to them.
In the case you're interested in extremely minor, almost immeasurable performance increases, add a constructor to your Line
class, giving you such:
public class Line
{
public Line(string sku, int qty)
{
this.Sku = sku;
this.Qty = qty;
}
public string Sku { get; set; }
public int Qty { get; set; }
}
Then create a specialized collection class based on List<Line>
with one new method, Add
:
public class LineList : List<Line>
{
public void Add(string sku, int qty)
{
this.Add(new Line(sku, qty));
}
}
Then the code which populates your list gets a bit less verbose by using a collection initializer:
LineList myLines = new LineList
{
{ "ABCD1", 1 },
{ "ABCD2", 1 },
{ "ABCD3", 1 }
};
And, of course, as the other answers state, it's trivial to extract the SKUs into a string array with LINQ:
string[] mySKUsArray = myLines.Select(myLine => myLine.Sku).ToArray();
I had this problem with getting "command not found" after install but I was installed into /usr/local as described in the solution above.
My problem seemed to be caused by me running the install with sudo. I did the following.
You are probably trying to push to a private repository. In that case, you will have to ask the admin for Collaborator access to be authenticated.
In case if you want to implement your own Array.Copy method.
Static method which is of generic type.
static void MyCopy<T>(T[] sourceArray, long sourceIndex, T[] destinationArray, long destinationIndex, long copyNoOfElements)
{
long totaltraversal = sourceIndex + copyNoOfElements;
long sourceArrayLength = sourceArray.Length;
//to check all array's length and its indices properties before copying
CheckBoundaries(sourceArray, sourceIndex, destinationArray, copyNoOfElements, sourceArrayLength);
for (long i = sourceIndex; i < totaltraversal; i++)
{
destinationArray[destinationIndex++] = sourceArray[i];
}
}
Boundary method implementation.
private static void CheckBoundaries<T>(T[] sourceArray, long sourceIndex, T[] destinationArray, long copyNoOfElements, long sourceArrayLength)
{
if (sourceIndex >= sourceArray.Length)
{
throw new IndexOutOfRangeException();
}
if (copyNoOfElements > sourceArrayLength)
{
throw new IndexOutOfRangeException();
}
if (destinationArray.Length < copyNoOfElements)
{
throw new IndexOutOfRangeException();
}
}
reinterpret_cast
To get a full list of colors to use in plots:
import matplotlib.colors as colors
colors_list = list(colors._colors_full_map.values())
So, you can use in that way quickly:
scatter(X,Y, color=colors_list[0])
scatter(X,Y, color=colors_list[1])
scatter(X,Y, color=colors_list[2])
...
scatter(X,Y, color=colors_list[-1])
After loading the SSH private key in Git Extensions, this issue gets resolved.
Main difference between JPA and JDBC is level of abstraction.
JDBC is a low level standard for interaction with databases. JPA is higher level standard for the same purpose. JPA allows you to use an object model in your application which can make your life much easier. JDBC allows you to do more things with the Database directly, but it requires more attention. Some tasks can not be solved efficiently using JPA, but may be solved more efficiently with JDBC.
Instagram developer console has provided the solution for it. https://www.instagram.com/developer/endpoints/
To use this in PHP, here is the code snippet,
/**
**
** Add this code snippet after your first curl call
** assume the response of the first call is stored in $userdata
** $access_token have your access token
*/
$maximumNumberOfPost = 33; // it can be 20, depends on your instagram application
$no_of_images = 50 // Enter the number of images you want
if ($no_of_images > $maximumNumberOfPost) {
$ImageArray = [];
$next_url = $userdata->pagination->next_url;
while ($no_of_images > $maximumNumberOfPost) {
$originalNumbersOfImage = $no_of_images;
$no_of_images = $no_of_images - $maximumNumberOfPost;
$next_url = str_replace("count=" . $originalNumbersOfImage, "count=" . $no_of_images, $next_url);
$chRepeat = curl_init();
curl_setopt_array($chRepeat, [
CURLOPT_URL => $next_url,
CURLOPT_HTTPHEADER => [
"Authorization: Bearer $access_token"
],
CURLOPT_RETURNTRANSFER => true
]);
$userRepeatdata = curl_exec($chRepeat);
curl_close($chRepeat);
if ($userRepeatdata) {
$userRepeatdata = json_decode($userRepeatdata);
$next_url = $userRepeatdata->pagination->next_url;
if (isset($userRepeatdata->data) && $userRepeatdata->data) {
$ImageArray = $userRepeatdata->data;
}
}
}
}
Just use this:
$array = explode("\n", file_get_contents('file.txt'));
Picked this up in the php docs:
<?php
// split the phrase by any number of commas or space characters,
// which include " ", \r, \t, \n and \f
$keywords = preg_split("/[\s,]+/", "hypertext language, programming");
print_r($keywords);
?>
Here you go. I have used this code with UIView, though. You should be able to make those adjustments for scrollview.
func addKeyboardNotifications() {
NotificationCenter.default.addObserver(self,
selector: #selector(keyboardWillShow(notification:)),
name: NSNotification.Name.UIKeyboardWillShow, object: nil)
NotificationCenter.default.addObserver(self,
selector: #selector(keyboardWillHide(notification:)),
name: NSNotification.Name.UIKeyboardWillHide, object: nil)
}
func keyboardWillShow(notification: NSNotification) {
if let keyboardSize = (notification.userInfo?[UIKeyboardFrameEndUserInfoKey] as? NSValue)?.cgRectValue {
let duration = notification.userInfo![UIKeyboardAnimationDurationUserInfoKey] as! Double
// if using constraints
// bottomViewBottomSpaceConstraint.constant = keyboardSize.height
self.view.frame.origin.y -= keyboardSize.height
UIView.animate(withDuration: duration) {
self.view.layoutIfNeeded()
}
}
}
func keyboardWillHide(notification: NSNotification) {
let duration = notification.userInfo![UIKeyboardAnimationDurationUserInfoKey] as! Double
//if using constraint
// bottomViewBottomSpaceConstraint.constant = 0
self.view.frame.origin.y = 0
UIView.animate(withDuration: duration) {
self.view.layoutIfNeeded()
}
}
Don't forget to remove notifications at right place.
func removeKeyboardNotifications() {
NotificationCenter.default.removeObserver(self, name: NSNotification.Name.UIKeyboardWillShow, object: nil)
NotificationCenter.default.removeObserver(self, name: NSNotification.Name.UIKeyboardWillHide, object: nil)
}
Be sure to fully qualify your sheets with which workbook they are referencing!
mainWB.Sheets.Add(After:=mainWB.Sheets(mainWB.Sheets.Count)).Name = new_sheet_name
Look up the specification of HTTP. Or to get started, try http://www.jmarshall.com/easy/http/
Try this...
I have used following code to read "xls and xlsx"
<?php
include 'excel_reader.php'; // include the class
$excel = new PhpExcelReader; // creates object instance of the class
$excel->read('excel_file.xls'); // reads and stores the excel file data
// Test to see the excel data stored in $sheets property
echo '<pre>';
var_export($excel->sheets);
echo '</pre>';
or
echo '<pre>';
print_r($excel->sheets);
echo '</pre>';
Reference:http://coursesweb.net/php-mysql/read-excel-file-data-php_pc
The question asks which characters are allowed in GET parameters without encoding or escaping them.
According to RFC3986 (general URL syntax) and RFC7230, section 2.7.1 (HTTP/S URL syntax) the only characters you need to percent-encode are those outside of the query set, see the definition below.
However, there are additional specifications like HTML5, Web forms, and the obsolete Indexed search, W3C recommendation. Those documents add a special meaning to some characters notably, to symbols like = & + ;.
Other answers here suggest that most of the reserved characters should be encoded, including "/" "?". That's not correct. In fact, RFC3986, section 3.4 advises against percent-encoding "/" "?" characters.
it is sometimes better for usability to avoid percent- encoding those characters.
RFC3986 defines query component as:
query = *( pchar / "/" / "?" )
pchar = unreserved / pct-encoded / sub-delims / ":" / "@"
pct-encoded = "%" HEXDIG HEXDIG
sub-delims = "!" / "$" / "&" / "'" / "(" / ")" / "*" / "+" / "," / ";" / "="
unreserved = ALPHA / DIGIT / "-" / "." / "_" / "~"
A percent-encoding mechanism is used to represent a data octet in a component when that octet's corresponding character is outside the allowed set or is being used as a delimiter of, or within, the component.
The conclusion is that XYZ part should encode:
special: # % = & ;
Space
sub-delims
out of query set: [ ]
non ASCII encodable characters
Unless special symbols = & ; are key=value separators.
Encoding other characters is allowed but not necessary.
In General:
An example of an easy way to post XML data and get the response (as a string) would be the following function:
public string postXMLData(string destinationUrl, string requestXml)
{
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(destinationUrl);
byte[] bytes;
bytes = System.Text.Encoding.ASCII.GetBytes(requestXml);
request.ContentType = "text/xml; encoding='utf-8'";
request.ContentLength = bytes.Length;
request.Method = "POST";
Stream requestStream = request.GetRequestStream();
requestStream.Write(bytes, 0, bytes.Length);
requestStream.Close();
HttpWebResponse response;
response = (HttpWebResponse)request.GetResponse();
if (response.StatusCode == HttpStatusCode.OK)
{
Stream responseStream = response.GetResponseStream();
string responseStr = new StreamReader(responseStream).ReadToEnd();
return responseStr;
}
return null;
}
In your specific situation:
Instead of:
request.ContentType = "application/x-www-form-urlencoded";
use:
request.ContentType = "text/xml; encoding='utf-8'";
Also, remove:
string postData = "XMLData=" + Sendingxml;
And replace:
byte[] byteArray = Encoding.UTF8.GetBytes(postData);
with:
byte[] byteArray = Encoding.UTF8.GetBytes(Sendingxml.ToString());
Use this plugin: https://github.com/admsev/jquery-play-sound
$.playSound('http://example.org/sound.mp3');
Excerpt:-
try
{
cnt++;scnt++;now=System.currentTimeMillis();r=rand.nextInt(6);r++;
loc=lm.getLastKnownLocation(best);
if(loc!=null){lat=loc.getLatitude();lng=loc.getLongitude();}
Thread.sleep(100);
handler.sendMessage(handler.obtainMessage());
}
catch (InterruptedException e)
{
Toast.makeText(this, "Error="+e.toString(), Toast.LENGTH_LONG).show();
}
As you can see above, a thread is running alongside main thread of user-interface activity which continuously displays GPS lat,long alongwith current time and a random dice throw.
IF you are curious then just check the full code: GPS Location with a randomized dice throw & current time in separate thread
Basically your query returns more than one result set. In API Docs uniqueResult() method says that Convenience method to return a single instance that matches the query, or null if the query returns no results
uniqueResult() method yield only single resultset
Here's my solution to the issue. Tried to keep it straight and simple.
#include <iostream>
using namespace std;
class Game{
public:
void init(){
cout << "Hi" << endl;
}
}g;
class b : Game{ //class b uses/imports class Game
public:
void h(){
init(); //Use function from class Game
}
}A;
int main()
{
A.h();
return 0;
}
you need to join the two tables:
for instance you want to copy the value of name
from tableA into tableB
where they have the same ID
UPDATE tableB t1
INNER JOIN tableA t2
ON t1.id = t2.id
SET t1.name = t2.name
WHERE t2.name = 'Joe'
UPDATE 1
UPDATE tableB t1
INNER JOIN tableA t2
ON t1.id = t2.id
SET t1.name = t2.name
UPDATE 2
UPDATE tableB t1
INNER JOIN tableA t2
ON t1.name = t2.name
SET t1.value = t2.value
Take a look at Enumerable#each_slice:
foo.each_slice(3).to_a
#=> [["1", "2", "3"], ["4", "5", "6"], ["7", "8", "9"], ["10"]]
No! You should avoid using HTML entities.
Instead of using HTML entities for symbols you should just put those symbols directly into your text and correctly encode your document.
£
you should use the character £
.??
which is currently the most commonly used single character for rupee. Other alternatives are using INR
, Rs.
or rupees
.When the new Unicode symbol for the Indian Rupee is introduced then could use that instead (but note that it will be a while before all browsers support it).
I had a similar problem and I ended up writing a node extension for this. You can check out the git repository. It's open source and free and all that good stuff !
https://github.com/aponxi/npm-execxi
ExecXI is a node extension written in C++ to execute shell commands one by one, outputting the command's output to the console in real-time. Optional chained, and unchained ways are present; meaning that you can choose to stop the script after a command fails (chained), or you can continue as if nothing has happened !
Usage instructions are in the ReadMe file. Feel free to make pull requests or submit issues!
EDIT: However it doesn't return the stdout yet... Just outputs them in real-time. It does now. Well, I just released it today. Maybe we can build on it.
Anyway, I thought it was worth to mention it.
>>> {i:i for i in range(1, 11)}
{1: 1, 2: 2, 3: 3, 4: 4, 5: 5, 6: 6, 7: 7, 8: 8, 9: 9, 10: 10}
Make sure you have the prerequisite, a JVM (http://wiki.eclipse.org/Eclipse/Installation#Install_a_JVM) installed.
This will be a JRE and JDK package.
There are a number of sources which includes: http://www.oracle.com/technetwork/java/javase/downloads/index.html.
Neither of the suggested solutions worked for me. So I kept on searching for an alternative solution, which ended up being a mixture of the two before mentioned and a third step.
//(1)
TransformerFactory tf = TransformerFactory.newInstance();
tf.setAttribute("indent-number", new Integer(2));
//(2)
Transformer t = tf.newTransformer();
t.setOutputProperty(OutputKeys.INDENT, "yes");
//(3)
t.transform(new DOMSource(doc),
new StreamResult(new OutputStreamWriter(out, "utf-8"));
You must do (3) to workaround a "buggy" behavior of the xml handling code.
Source: johnnymac75 @ http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6296446
(If I have cited my source incorrectly please let me know)
Getting the Text of ComboBox when the item is changed
self.ui.comboBox.activated.connect(self.pass_Net_Adap)
def pass_Net_Adap(self):
print str(self.ui.comboBox.currentText())
If you want to submit a POST request
Content-Type
” and “value” = “application/x-www-form-urlencoded
”name=mynamehere&title=TA
” in the “request body” text area fieldIn the default constructor (and any non-default ones if you have any too of course):
public foo() {
Bar = "bar";
}
This is no less performant that your original code I believe, since this is what happens behind the scenes anyway.
setTimeout() function it's use to delay a process in JavaScript.
w3schools has an easy tutorial about this function.
Assuming you're using cookies for login, just call it after your setcookie
call -- after all, you must be calling that one before any output too.
Anyway in general you could check for the presence of your form's submit button name at the beginning of the script, do your logic, and then output stuff:
if(isset($_POST['mySubmit'])) {
// the form was submitted
// ...
// perform your logic
// redirect if login was successful
header('Location: /somewhere');
}
// output your stuff here
What worked for me was:
I had a process called "mysqld" running even when MAMP had been quit. I force quit the process, restarted MAMP and it worked again.
Another way of doing multiple cases in a switch statement, when inside a function:
function name(varName){
switch (varName) {
case 'afshin':
case 'saeed':
case 'larry':
return 'Hey';
default:
return 'Default case';
}
}
console.log(name('afshin')); // Hey
_x000D_
in some cases where pywin32 is not the direct reference and other libraries require pywin32-ctypes to be installed; causes the "ImportError: No module named win32com" when application bundled with pyinstaller.
running following command solves on python 3.7 - pyinstaller 3.6
pip install pywin32==227
For me this worked(I wanted to zoom in since the container of my pdf was small):
<embed src="filename.pdf#page=1&zoom=300" width="575" height="500">
I think
s.startswith('-') and s[1:].isdigit()
would be better to rewrite to:
s.replace('-', '').isdigit()
because s[1:] also creates a new string
But much better solution is
s.lstrip('+-').isdigit()
I tried the chosen answer, but found when I ran a shell script having it, the whole thing was getting printed to screen (similar to how jupyter notebooks print out everything in '''xx'''
quotes) and there was an error message at end. It wasn't doing anything, but: scary. Then I realised while editing it that single-quotes can span multiple lines. So.. lets just assign the block to a variable.
x='
echo "these lines will all become comments."
echo "just make sure you don_t use single-quotes!"
ls -l
date
'
If I remember correctly the XmlDocument.Load(string) method always assumes UTF-8, regardless of the XML encoding. You would have to create a StreamReader with the correct encoding and use that as the parameter.
xmlDoc.Load(new StreamReader(
File.Open("file.xml"),
Encoding.GetEncoding("iso-8859-15")));
I just stumbled across KB308061 from Microsoft. There's an interesting passage: Specify the encoding declaration in the XML declaration section of the XML document. For example, the following declaration indicates that the document is in UTF-16 Unicode encoding format:
<?xml version="1.0" encoding="UTF-16"?>
Note that this declaration only specifies the encoding format of an XML document and does not modify or control the actual encoding format of the data.
Link Source:
None of these answers worked for me. Most of these answers give you a half-transparent border. To avoid this, you need to wrap your container once again with another container with your preferred color. Here is an example:
dashed_border_layout.xml
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:backgroundTint="@color/black"
android:background="@drawable/dashed_border_out">
<LinearLayout
android:layout_width="150dp"
android:layout_height="50dp"
android:padding="5dp"
android:background="@drawable/dashed_border_in"
android:orientation="vertical">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="This is Dashed Container"
android:textSize="16sp" />
</LinearLayout>
dashed_border_in.xml
<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >
<item>
<shape>
<corners android:radius="10dp" />
<solid android:color="#ffffff" />
<stroke
android:dashGap="5dp"
android:dashWidth="5dp"
android:width="3dp"
android:color="#0000FF" />
<padding
android:bottom="5dp"
android:left="5dp"
android:right="5dp"
android:top="5dp" />
</shape>
</item>
dashed_border_out.xml
<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >
<item>
<shape>
<corners android:radius="12dp" />
</shape>
</item>
This works for me:
In HTML template:
<a target="_blank" :href="url" @click.stop>your_name</a>
In mounted():
this.url = `${window.location.origin}/your_page_name`;
Yet another solution to get timezone offset:
TimeZone tz = TimeZone.getDefault();
String current_Time_Zone = getGmtOffsetString(tz.getRawOffset());
public static String getGmtOffsetString(int offsetMillis) {
int offsetMinutes = offsetMillis / 60000;
char sign = '+';
if (offsetMinutes < 0) {
sign = '-';
offsetMinutes = -offsetMinutes;
}
return String.format("GMT%c%02d:%02d", sign, offsetMinutes/60, offsetMinutes % 60);
}
autoscroll
will be defined and modified in the controller:
<span ng-class= "autoscroll?'class_if_true':'class_if_false'"></span>
Add multiple classes based on condition by:
<span ng-class= "autoscroll?'first second third':'classes_if_false'"></span>
you can probably do it like this:
String k = null;
String v = null;
options.put(k,v);
You created the UIButton
is added the ViewController
, The following instance method to change UIFont
, tintColor
and TextColor
of the UIButton
Objective-C
buttonName.titleLabel.font = [UIFont fontWithName:@"LuzSans-Book" size:15];
buttonName.tintColor = [UIColor purpleColor];
[buttonName setTitleColor:[UIColor purpleColor] forState:UIControlStateNormal];
Swift
buttonName.titleLabel.font = UIFont(name: "LuzSans-Book", size: 15)
buttonName.tintColor = UIColor.purpleColor()
buttonName.setTitleColor(UIColor.purpleColor(), forState: .Normal)
Swift3
buttonName.titleLabel?.font = UIFont(name: "LuzSans-Book", size: 15)
buttonName.tintColor = UIColor.purple
buttonName.setTitleColor(UIColor.purple, for: .normal)
Create a new folder, let's say local-maven-repo
at the root of your Maven project.
Just add a local repo inside your <project>
of your pom.xml
:
<repositories>
<repository>
<id>local-maven-repo</id>
<url>file:///${project.basedir}/local-maven-repo</url>
</repository>
</repositories>
Then for each external jar you want to install, go at the root of your project and execute:
mvn deploy:deploy-file -DgroupId=[GROUP] -DartifactId=[ARTIFACT] -Dversion=[VERS] -Durl=file:./local-maven-repo/ -DrepositoryId=local-maven-repo -DupdateReleaseInfo=true -Dfile=[FILE_PATH]
Try setting the file path using (for anaconda3)...
export PATH=~/anaconda3/bin:$PATH
Then check whether it worked with...
conda --version
This worked for me when 'conda' was returning 'command not found'.
You've mixed tabs and spaces. This can lead to some confusing errors.
I'd suggest using only tabs or only spaces for indentation.
Using only spaces is generally the easier choice. Most editors have an option for automatically converting tabs to spaces. If your editor has this option, turn it on.
As an aside, your code is more verbose than it needs to be. Instead of this:
if str_p == str_q:
result = True
else:
result = False
return result
Just do this:
return str_p == str_q
You also appear to have a bug on this line:
str_q = p[b+1:]
I'll leave you to figure out what the error is.
The error occur because the mysql server is not starting on your computer. You should start it manually. Do following steps:
Download and install wamp server according to your bit version(32bit or 64bit) in your computer(http://wampserver-64bit.en.softonic.com/) this link allows you to download wamp server for 64bit.
As soon as you install it you can double click and run it..(you can see a icon in the right hand of the taskbar.It may be hidden .so you can click the arrow which show you the hide apps runing).So click the icon and go to Mysql
Then go to Service and there you can find Start/Resume Services click on it..
And now it is done.Open mysql workbench and see.It will work..
Yes, you will likely need to add another jar or dependency
javax.persistence.*
is part of the Java Persistence API (JPA). It is only an API, you can think of it as similar to an interface. There are many implementations of JPA and this answer gives a very good elaboration of each, as well as which to use.
If your javax.persistence.*
import cannot be resolved, you will need to provide the jar that implements JPA. You can do that either by manually downloading it (and adding it to your project) or by adding a declaration to a dependency management tool (for eg, Ivy/Maven/Gradle). See here for the EclipseLink implementation (the reference implementation) on Maven repo.
After doing that, your imports should be resolved.
Also see here for what is JPA about. The xml you are referring to could be persistence.xml
, which is explained on page 3 of the link.
That being said, you might just be pointing to the wrong target runtime
If i recall correctly, you don't need to provide a JPA implementation if you are deploying it into a JavaEE app server like JBoss. See here "Note that you typically don't need it when you deploy your application in a Java EE 6 application server (like JBoss AS 6 for example).". Try changing your project's target runtime.
If your local project was setup to point to Tomcat while your remote repo assumes a JavaEE server, this could be the case. See here for the difference between Tomcat and JBoss.
Edit: I changed my project to point to GlassFish instead of Tomcat and javax.persistence.*
resolved fine without any explicit JPA dependency.
Very close to what you posted, actually.
To get the assigned value, or default
if it's missing:
FOO="${VARIABLE:-default}" # If variable not set or null, use default.
Or to assign default
to VARIABLE
at the same time:
FOO="${VARIABLE:=default}" # If variable not set or null, set it to default.
Use any. They are almost the same.
As usual, there are pros and cons.
Use std::reverse_iterator
:
operator>()
std::greater<int>()
Use std::greater
when:
As for performance, both methods are equally efficient. I tried the following benchmark:
#include <algorithm>
#include <chrono>
#include <iostream>
#include <fstream>
#include <vector>
using namespace std::chrono;
/* 64 Megabytes. */
#define VECTOR_SIZE (((1 << 20) * 64) / sizeof(int))
/* Number of elements to sort. */
#define SORT_SIZE 100000
int main(int argc, char **argv) {
std::vector<int> vec;
vec.resize(VECTOR_SIZE);
/* We generate more data here, so the first SORT_SIZE elements are evicted
from the cache. */
std::ifstream urandom("/dev/urandom", std::ios::in | std::ifstream::binary);
urandom.read((char*)vec.data(), vec.size() * sizeof(int));
urandom.close();
auto start = steady_clock::now();
#if USE_REVERSE_ITER
auto it_rbegin = vec.rend() - SORT_SIZE;
std::sort(it_rbegin, vec.rend());
#else
auto it_end = vec.begin() + SORT_SIZE;
std::sort(vec.begin(), it_end, std::greater<int>());
#endif
auto stop = steady_clock::now();
std::cout << "Sorting time: "
<< duration_cast<microseconds>(stop - start).count()
<< "us" << std::endl;
return 0;
}
With this command line:
g++ -g -DUSE_REVERSE_ITER=0 -std=c++11 -O3 main.cpp \
&& valgrind --cachegrind-out-file=cachegrind.out --tool=cachegrind ./a.out \
&& cg_annotate cachegrind.out
g++ -g -DUSE_REVERSE_ITER=1 -std=c++11 -O3 main.cpp \
&& valgrind --cachegrind-out-file=cachegrind.out --tool=cachegrind ./a.out \
&& cg_annotate cachegrind.out
std::greater
demo
std::reverse_iterator
demo
Timings are same. Valgrind reports the same number of cache misses.
<select name="name">
<option <?php if ($_GET['name'] == 'a') { ?>selected="true" <?php }; ?>value="a">a</option>
<option <?php if ($_GET['name'] == 'b') { ?>selected="true" <?php }; ?>value="b">b</option>
</select>
A one liner but without String.format
for all RGB colors:
Color your_color = new Color(128,128,128);
String hex = "#"+Integer.toHexString(your_color.getRGB()).substring(2);
You can add a .toUpperCase()
if you want to switch to capital letters. Note, that this is valid (as asked in the question) for all RGB colors.
When you have ARGB colors you can use:
Color your_color = new Color(128,128,128,128);
String buf = Integer.toHexString(your_color.getRGB());
String hex = "#"+buf.substring(buf.length()-6);
A one liner is theoretically also possible but would require to call toHexString twice. I benchmarked the ARGB solution and compared it with String.format()
:
You can also download MySql workbench (31Mo) which includes mysql.exe
and mysqldump.exe
.
I successfully tested this when i had to run Perl scripts using DBD:MySql
module to run SQL statements against a distant MySql db.
You can use this function to get the absolute value:
+(NSNumber *)absoluteValue:(NSNumber *)input {
return [NSNumber numberWithDouble:fabs([input doubleValue])];
}
As per @Syntle's answer, if you have only non numeric characters you'll get an Uncaught TypeError: Cannot read property 'join' of null
.
This will prevent errors if no matches are found and return an empty string:
('something'.match( /\d+/g )||[]).join('')