If you are doing a lot of date work, you may want to look into JavaScript date libraries like Datejs or Moment.js. For example, with Moment.js, this is simply:
var newDateObj = moment(oldDateObj).add(30, 'm').toDate();
This is like chaos's answer, but in one line:
var newDateObj = new Date(oldDateObj.getTime() + diff*60000);
Where diff
is the difference in minutes you want from oldDateObj
's time. It can even be negative.
Or as a reusable function, if you need to do this in multiple places:
function addMinutes(date, minutes) {
return new Date(date.getTime() + minutes*60000);
}
And just in case this is not obvious, the reason we multiply minutes by 60000
is to convert minutes to milliseconds.
You may think you can add 24 hours to a date to get tomorrow's date, right? Wrong!
addMinutes(myDate, 60*24); //DO NOT DO THIS
It turns out, if the user observes daylight saving time, a day is not necessarily 24 hours long. There is one day a year that is only 23 hours long, and one day a year that is 25 hours long. For example, in most of the United States and Canada, 24 hours after midnight, Nov 2, 2014, is still Nov 2:
const NOV = 10; //because JS months are off by one...
addMinutes(new Date(2014, NOV, 2), 60*24); //In USA, prints 11pm on Nov 2, not 12am Nov 3!
This is why using one of the afore-mentioned libraries is a safer bet if you have to do a lot of work with this.
Below is a more generic version of this function that I wrote. I'd still recommend using a library, but that may be overkill/impossible for your project. The syntax is modeled after MySQL DATE_ADD function.
/**
* Adds time to a date. Modelled after MySQL DATE_ADD function.
* Example: dateAdd(new Date(), 'minute', 30) //returns 30 minutes from now.
* https://stackoverflow.com/a/1214753/18511
*
* @param date Date to start with
* @param interval One of: year, quarter, month, week, day, hour, minute, second
* @param units Number of units of the given interval to add.
*/
function dateAdd(date, interval, units) {
if(!(date instanceof Date))
return undefined;
var ret = new Date(date); //don't change original date
var checkRollover = function() { if(ret.getDate() != date.getDate()) ret.setDate(0);};
switch(String(interval).toLowerCase()) {
case 'year' : ret.setFullYear(ret.getFullYear() + units); checkRollover(); break;
case 'quarter': ret.setMonth(ret.getMonth() + 3*units); checkRollover(); break;
case 'month' : ret.setMonth(ret.getMonth() + units); checkRollover(); break;
case 'week' : ret.setDate(ret.getDate() + 7*units); break;
case 'day' : ret.setDate(ret.getDate() + units); break;
case 'hour' : ret.setTime(ret.getTime() + units*3600000); break;
case 'minute' : ret.setTime(ret.getTime() + units*60000); break;
case 'second' : ret.setTime(ret.getTime() + units*1000); break;
default : ret = undefined; break;
}
return ret;
}
datetime.replace() will provide the best options. Also, it provides facility for replacing day, year, and month.
Suppose we have a datetime
object and date is represented as:
"2017-05-04"
>>> from datetime import datetime
>>> date = datetime.strptime('2017-05-04',"%Y-%m-%d")
>>> print(date)
2017-05-04 00:00:00
>>> date = date.replace(minute=59, hour=23, second=59, year=2018, month=6, day=1)
>>> print(date)
2018-06-01 23:59:59
TO search a column name use the below query if you know the column name accurately:
select owner,table_name from all_tab_columns where upper(column_name) =upper('keyword');
TO search a column name if you dont know the accurate column use below:
select owner,table_name from all_tab_columns where upper(column_name) like upper('%keyword%');
Can't stand aside,
So we have linear system:
A1 * x + B1 * y = C1
A2 * x + B2 * y = C2
let's do it with Cramer's rule, so solution can be found in determinants:
x = Dx/D
y = Dy/D
where D is main determinant of the system:
A1 B1
A2 B2
and Dx and Dy can be found from matricies:
C1 B1
C2 B2
and
A1 C1
A2 C2
(notice, as C column consequently substitues the coef. columns of x and y)
So now the python, for clarity for us, to not mess things up let's do mapping between math and python. We will use array L
for storing our coefs A, B, C of the line equations and intestead of pretty x
, y
we'll have [0]
, [1]
, but anyway. Thus, what I wrote above will have the following form further in the code:
for D
L1[0] L1[1]
L2[0] L2[1]
for Dx
L1[2] L1[1]
L2[2] L2[1]
for Dy
L1[0] L1[2]
L2[0] L2[2]
Now go for coding:
line
- produces coefs A, B, C of line equation by two points provided,
intersection
- finds intersection point (if any) of two lines provided by coefs.
from __future__ import division
def line(p1, p2):
A = (p1[1] - p2[1])
B = (p2[0] - p1[0])
C = (p1[0]*p2[1] - p2[0]*p1[1])
return A, B, -C
def intersection(L1, L2):
D = L1[0] * L2[1] - L1[1] * L2[0]
Dx = L1[2] * L2[1] - L1[1] * L2[2]
Dy = L1[0] * L2[2] - L1[2] * L2[0]
if D != 0:
x = Dx / D
y = Dy / D
return x,y
else:
return False
Usage example:
L1 = line([0,1], [2,3])
L2 = line([2,3], [0,4])
R = intersection(L1, L2)
if R:
print "Intersection detected:", R
else:
print "No single intersection point detected"
Put your image in a container div then use the following CSS (changing the dimensions to suit your image.
.imageContainer{
position: absolute;
width: 100px; /*the image width*/
height: 100px; /*the image height*/
left: 50%;
top: 50%;
margin-left: -50px; /*half the image width*/
margin-top: -50px; /*half the image height*/
}
If you're using autofs
then the expansion might actually be coming from /etc/auto.home
(or similar for your distro). For example, my /etc/auto.master
looks like:
/home2 auto.home --timeout 60
and /etc/auto.home
looks like:
mgalgs -rw,noquota,intr space:/space/mgalgs
This worked for me:
File >> Project Structure >> Modules >> Dependency >> + (on left-side of window)
clicking the "+" sign will let you designate the directory where you have unpacked JavaFX's "lib" folder.
Scope is Compile (which is the default.) You can then edit this to call it JavaFX by double-clicking on the line.
then in:
Run >> Edit Configurations
Add this line to VM Options:
--module-path /path/to/JavaFX/lib --add-modules=javafx.controls
(oh and don't forget to set the SDK)
Use microsoft's tool for remote commands executions: PsExec
If there isn't your bat-file on remote host, copy it first. For example:
copy D:\apache-tomcat-6.0.20\apache-tomcat-7.0.30\bin\shutdown.bat \\RemoteServerNameOrIP\d$\apache-tomcat-6.0.20\apache-tomcat-7.0.30\bin\
And then execute:
psexec \\RemoteServerNameOrIP d:\apache-tomcat-6.0.20\apache-tomcat-7.0.30\bin\shutdown.bat
Note: filepath for psexec is path to file on remote server, not your local.
AFAIK, the only way this could be done is by using the state=directory
option.
While template
module supports most of copy
options, which in turn supports most file
options, you can not use something like state=directory
with it. Moreover, it would be quite confusing (would it mean that {{project_root}}/conf/code.conf
is a directory ? or would it mean that {{project_root}}/conf/
should be created first.
So I don't think this is possible right now without adding a previous file
task.
- file:
path: "{{project_root}}/conf"
state: directory
recurse: yes
So what is this "require?"
require()
is not part of the standard JavaScript API. But in Node.js, it's a built-in function with a special purpose: to load modules.
Modules are a way to split an application into separate files instead of having all of your application in one file. This concept is also present in other languages with minor differences in syntax and behavior, like C's include
, Python's import
, and so on.
One big difference between Node.js modules and browser JavaScript is how one script's code is accessed from another script's code.
In browser JavaScript, scripts are added via the <script>
element. When they execute, they all have direct access to the global scope, a "shared space" among all scripts. Any script can freely define/modify/remove/call anything on the global scope.
In Node.js, each module has its own scope. A module cannot directly access things defined in another module unless it chooses to expose them. To expose things from a module, they must be assigned to exports
or module.exports
. For a module to access another module's exports
or module.exports
, it must use require()
.
In your code, var pg = require('pg');
loads the pg
module, a PostgreSQL client for Node.js. This allows your code to access functionality of the PostgreSQL client's APIs via the pg
variable.
Why does it work in node but not in a webpage?
require()
, module.exports
and exports
are APIs of a module system that is specific to Node.js. Browsers do not implement this module system.
Also, before I got it to work in node, I had to do
npm install pg
. What's that about?
NPM is a package repository service that hosts published JavaScript modules. npm install
is a command that lets you download packages from their repository.
Where did it put it, and how does Javascript find it?
The npm cli puts all the downloaded modules in a node_modules
directory where you ran npm install
. Node.js has very detailed documentation on how modules find other modules which includes finding a node_modules
directory.
If you need a cross-platform solution, try Boost's Program Options library.
You can use ALTER to update a view, but this is different than the Oracle command since it only works if the view already exists. Probably better off with DaveK's answer since that will always work.
This works for me.
dataset <- read.csv(file = "data.csv",header=TRUE,fill = T,na.strings = "")
Express.js is a Node.js web application server framework, designed for building single-page, multi-page, and hybrid web applications. It is the de facto standard server framework for node.js.
Frameworks built on Express.
Several popular Node.js frameworks are built on Express:
LoopBack: Highly-extensible, open-source Node.js framework for quickly creating dynamic end-to-end REST APIs.
Sails: MVC framework for Node.js for building practical, production-ready apps.
Kraken: Secure and scalable layer that extends Express by providing structure and convention.
MEAN: Opinionated fullstack JavaScript framework that simplifies and accelerates web application development.
Express adds dead simple routing and support for Connect middleware, allowing many extensions and useful features.
For example,
To delete all DBs use:
for i in $(mongo --quiet --host $HOSTNAME --eval "db.getMongo().getDBNames()" | tr "," " ");
do mongo $i --host $HOSTNAME --eval "db.dropDatabase()";
done
In your question it seems that you have span
selector with given to every span
a seperate class into ul li
option and then you have many answers, i.e.
$(document).ready(function()
{
$('ul.art-vmenu li').click(function(e)
{
alert($(this).find("span.t").text());
});
});
But you need not to use ul.art-vmenu li
rather you can use direct ul
with the use of on as used in below example :
$(document).ready(function()
{
$("ul.art-vmenu").on("click","li", function(){
alert($(this).find("span.t").text());
});
});
Unless you have a specific reason not to, just use a normal object. Object properties in JavaScript can be referenced using hashtable-style syntax:
var hashtable = {};
hashtable.foo = "bar";
hashtable['bar'] = "foo";
Both foo
and bar
elements can now then be referenced as:
hashtable['foo'];
hashtable['bar'];
// Or
hashtable.foo;
hashtable.bar;
Of course this does mean your keys have to be strings. If they're not strings they are converted internally to strings, so it may still work. Your mileage may vary.
(Previously known as node-webkit)
I would suggest NW.js if you are familiar with Node or experienced with JavaScript.
NW.js is an app runtime based on Chromium and node.js.
Features
- Apps written in modern HTML5, CSS3, JS and WebGL
- Complete support for Node.js APIs and all its third party modules.
- Good performance: Node and WebKit run in the same thread: Function calls are made straightforward; objects are in the same heap and can just reference each other
- Easy to package and distribute apps
- Available on Linux, Mac OS X and Windows
You can find the NW.js repo here, and a good introduction to NW.js here. If you fancy learning Node.js I would recommend this SO post with a lot of good links.
Converting tabs to space in just in ".lua" files [tabs -> 2 spaces]
find . -iname "*.lua" -exec sed -i "s#\t# #g" '{}' \;
Type Chrome://flags in the address-bar
Search: Autoplay
Autoplay Policy
Policy used when deciding if audio or video is allowed to autoplay.
– Mac, Windows, Linux, Chrome OS, Android
Set this to "No user gesture is required"
Relaunch Chrome and you don't have to change any code
Use git fetch
to fetch all latest created branches.
You can manually set xticks (and yticks) using pyplot.xticks:
import matplotlib.pyplot as plt
import numpy as np
x = np.array([0,1,2,3])
y = np.array([20,21,22,23])
my_xticks = ['John','Arnold','Mavis','Matt']
plt.xticks(x, my_xticks)
plt.plot(x, y)
plt.show()
The problem is that for reasons of optimization the switch statement in C++ does not work on anything but primitive types, and you can only compare them with compile time constants.
Presumably the reason for the restriction is that the compiler is able to apply some form of optimization compiling the code down to one cmp instruction and a goto where the address is computed based on the value of the argument at runtime. Since branching and and loops don't play nicely with modern CPUs, this can be an important optimization.
To go around this, I am afraid you will have to resort to if statements.
C/C++ standard library <stdlib.h>
contains qsort
function.
This is not the best quick sort implementation in the world but it fast enough and VERY EASY to be used... the formal syntax of qsort is:
qsort(<arrayname>,<size>,sizeof(<elementsize>),compare_function);
The only thing that you need to implement is the compare_function, which takes in two arguments of type "const void", which can be cast to appropriate data structure, and then return one of these three values:
1. Comparing a list of integers:
simply cast a and b to integers
if x < y
,x-y
is negative, x == y
, x-y = 0
, x > y
, x-y
is positive
x-y
is a shortcut way to do it :)
reverse *x - *y
to *y - *x
for sorting in decreasing/reverse order
int compare_function(const void *a,const void *b) {
int *x = (int *) a;
int *y = (int *) b;
return *x - *y;
}
2. Comparing a list of strings:
For comparing string, you need strcmp
function inside <string.h>
lib.
strcmp
will by default return -ve,0,ve appropriately... to sort in reverse order, just reverse the sign returned by strcmp
#include <string.h>
int compare_function(const void *a,const void *b) {
return (strcmp((char *)a,(char *)b));
}
3. Comparing floating point numbers:
int compare_function(const void *a,const void *b) {
double *x = (double *) a;
double *y = (double *) b;
// return *x - *y; // this is WRONG...
if (*x < *y) return -1;
else if (*x > *y) return 1; return 0;
}
4. Comparing records based on a key:
Sometimes you need to sort a more complex stuffs, such as record. Here is the simplest
way to do it using qsort
library.
typedef struct {
int key;
double value;
} the_record;
int compare_function(const void *a,const void *b) {
the_record *x = (the_record *) a;
the_record *y = (the_record *) b;
return x->key - y->key;
}
If this is the offending line:
db.Responses.Where(y => y.ResponseId.Equals(item.ResponseId)).First();
Then it's because there is no object in Responses
for which the ResponseId == item.ResponseId
, and you can't get the First()
record if there are no matches.
Try this instead:
var response
= db.Responses.Where(y => y.ResponseId.Equals(item.ResponseId)).FirstOrDefault();
if (response != null)
{
// take some alternative action
}
else
temp.Response = response;
The FirstOrDefault()
extension returns an objects default value if no match is found. For most objects (other than primitive types), this is null
.
If you're using jQuery, it's as simple as this:
$('#mySelect').change(function()
{
$('#myForm').submit();
});
I have found that you have to comment out the namespace wrapping the the class at time when moving between version of Visual Studio:
'Namespace FormsAuth
'End Namespace
and at other times, I have to uncomment the namespace.
This happened to me several times when other developers edited the same solution using a different version of VS and/or I moved (copied) the solution to another location
If anyone is targeting yahoo rss feed may benefit from this snippet
<?php
$rssUrl="http://news.yahoo.com/rss/topstories";
//====================================================
$xml=simplexml_load_file($rssUrl) or die("Error: Cannot create object");
//====================================================
$featureRss = array_slice(json_decode(json_encode((array) $xml ), true ), 0 );
/*Just to see what is in it
use this function PrettyPrintArray()
instead of var_dump($featureRss);*/
function PrettyPrintArray($rssData, $level) {
foreach($rssData as $key => $Items) {
for($i = 0; $i < $level; $i++)
echo(" ");
/*if content more than one*/
if(!is_array($Items)){
//$Items=htmlentities($Items);
$Items=htmlspecialchars($Items);
echo("Item " .$key . " => " . $Items . "<br/><br/>");
}
else
{
echo($key . " => <br/><br/>");
PrettyPrintArray($Items, $level+1);
}
}
}
PrettyPrintArray($featureRss, 0);
?>
You may want to run it in your browser first to see what is there and before looping and style it up pretty simple
To grab the first item description
<?php
echo($featureRss['channel']['item'][0]['description']);
?>
I'm currently fighting with dropdowns and I'd like to share my experiences:
There are specific situations where <select>
can't be used and must be 'emulated' with dropdown.
For example if you want to create bootstrap input groups, like Buttons with dropdowns (see http://getbootstrap.com/components/#input-groups-buttons-dropdowns). Unfortunately <select>
is not supported in input groups, it will not be rendered properly.
Or does anybody solved this already? I would be very interested on the solution.
And to make it even more complicated, you can't use so simply $(this).text()
to catch what user selected in dropdown if you're using glypicons or font awesome icons as content for dropdown. For example:
<li id="someId"><a href="#0"><i class="fa fa-minus"></i></a></li>
Because in this case there is no text and if you will add some then it will be also displayed in dropdown element and this is unwanted.
I found two possible solutions:
1)
Use $(this).html()
to get content of the selected <li>
element and then to examine it, but you will get something like <a href="#0"><i class="fa fa-minus"></i></a>
so you need to play with this to extract what you need.
2)
Use $(this).text()
and hide the text in element in hidden span:
<li id="someId"><a href="#0"><i class="fa fa-minus"><span class="hidden">text</span></i></a></li>
.
For me this is simple and elegant solution, you can put any text you need, text will be hidden, and you don't need to do any transformations of $(this).html()
result like in option 1) to get what you need.
I hope it's clear and can help somebody :-)
Try this code it works:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim CustomeDate As String = ("#" & DOE.Value.Date.ToString("d/MM/yyyy") & "#")
MsgBox(CustomeDate.ToString)
con.Open()
dadap = New System.Data.OleDb.OleDbDataAdapter("SELECT * FROM QRY_Tran where FORMAT(qry_tran.doe,'d/mm/yyyy') = " & CustomeDate & "", con)
ds = New System.Data.DataSet
dadap.Fill(ds)
Dgview.DataSource = ds.Tables(0)
con.Close()
Note : if u use dd
for date representation it will return nothing while selecting 1 to 9 so use d
for selection
'Date time format
'MMM Three-letter month.
'ddd Three-letter day of the week.
'd Day of the month.
'HH Two-digit hours on 24-hour scale.
'mm Two-digit minutes.
'yyyy Four-digit year.
The documentation contains a full list of the date formats.
Look at the getFragmentManager().popBackStack()
methods (there are several to choose from)
http://developer.android.com/reference/android/app/FragmentManager.html#popBackStack()
You don't need JavaScript for this.
Some CSS would do it. Here is an example:
<html>_x000D_
<style type="text/css">_x000D_
.section { background:#ccc; }_x000D_
.layer { background:#ddd; }_x000D_
.section:hover img { border:2px solid #333; }_x000D_
.section:hover .layer { border:2px solid #F90; }_x000D_
</style>_x000D_
</head>_x000D_
<body>_x000D_
<div class="section">_x000D_
<img src="myImage.jpg" />_x000D_
<div class="layer">Lorem Ipsum</div>_x000D_
</div>_x000D_
</body>_x000D_
</html>
_x000D_
You can also register $location on the scope in the controller (to make it accessible from html)
angular.module(...).controller("...", function($location) {
$scope.$location = $location;
...
});
and then go straight for the honey in your html:
<button ng-click="$location.path('#/new-page.html')">New Page<button>
If you are looking for 1st Number with decimal as string has correct decimal places, you may try regexp_substr
function like this:
regexp_substr('stack12.345overflow', '\.*[[:digit:]]+\.*[[:digit:]]*')
It has been almost 8 years since the question was asked, but I will venture an answer not previously given. The OP said this doesn't work:
action="javascript:simpleCart.checkout()"
And the OP said that this code continued to fail despite trying all the good advice he got. So I will venture a guess. The action is calling checkout()
as a static method of the simpleCart
class; but maybe checkout()
is actually an instance member, and not static. It depends how he defined checkout()
.
By the way, simpleCart
is presumably a class name, and by convention class names have an initial capital letter, so let's use that convention, here. Let's use the name SimpleCart
.
Here is some sample code that illustrates defining checkout()
as an instance member. This was the correct way to do it, prior to ECMA-6:
function SimpleCart() {
...
}
SimpleCart.prototype.checkout = function() { ... };
Many people have used a different technique, as illustrated in the following. This was popular, and it worked, but I advocate against it, because instances are supposed to be defined on the prototype
, just once, while the following technique defines the member on this
and does so repeatedly, with every instantiation.
function SimpleCart() {
...
this.checkout = function() { ... };
}
And here is an instance definition in ECMA-6, using an official class
:
class SimpleCart {
constructor() { ... }
...
checkout() { ... }
}
Compare to a static definition in ECMA-6. The difference is just one word:
class SimpleCart {
constructor() { ... }
...
static checkout() { ... }
}
And here is a static definition the old way, pre-ECMA-6. Note that the checkout()
method is defined outside of the function. It is a member of the function object, not the prototype object, and that's what makes it static.
function SimpleCart() {
...
}
SimpleCart.checkout = function() { ... };
Because of the way it is defined, a static function will have a different concept of what the keyword this
references. Note that instance member functions are called using the this
keyword:
this.checkout();
Static member functions are called using the class name:
SimpleCart.checkout();
The problem is that the OP wants to put the call into HTML, where it will be in global scope. He can't use the keyword this
because this
would refer to the global scope (which is window
).
action="javascript:this.checkout()" // not as intended
action="javascript:window.checkout()" // same thing
There is no easy way to use an instance member function in HTML. You can do stuff in combination with JavaScript, creating a registry in the static scope of the Class, and then calling a surrogate static method, while passing an argument to that surrogate that gives the index into the registry of your instance, and then having the surrogate call the actual instance member function. Something like this:
// In Javascript:
SimpleCart.registry[1234] = new SimpleCart();
// In HTML
action="javascript:SimpleCart.checkout(1234);"
// In Javascript
SimpleCart.checkout = function(myIndex) {
var myThis = SimpleCart.registry[myIndex];
myThis.checkout();
}
You could also store the index as an attribute on the element.
But usually it is easier to just do nothing in HTML and do everything in JavaScript with .addEventListener()
and use the .bind()
capability.
If the datepicker is in a row of a grid, try something like
editoptions : {
dataInit : function (e) {
$(e).datepicker({
onSelect : function (ev) {
// here your code
}
});
}
}
Recent versions of GNU Grep (>= 2.5.2) provide:
--exclude-dir=dir
which excludes directories matching the pattern dir
from recursive directory searches.
So you can do:
grep -R --exclude-dir=node_modules 'some pattern' /path/to/search
For a bit more information regarding syntax and usage see
For older GNU Greps and POSIX Grep, use find
as suggested in other answers.
Or just use ack
(Edit: or The Silver Searcher) and be done with it!
This is not a new question. I addresed it in comments in one SO post, and posted my alternative implementations in another post. The comments in the first post actually elucidate the performance differences between the different implementations.
Basically, which works fastest depends on what database object you use with it.
The following query can be used to detemine tablespace and other params:
select df.tablespace_name "Tablespace",
totalusedspace "Used MB",
(df.totalspace - tu.totalusedspace) "Free MB",
df.totalspace "Total MB",
round(100 * ( (df.totalspace - tu.totalusedspace)/ df.totalspace)) "Pct. Free"
from (select tablespace_name,
round(sum(bytes) / 1048576) TotalSpace
from dba_data_files
group by tablespace_name) df,
(select round(sum(bytes)/(1024*1024)) totalusedspace,
tablespace_name
from dba_segments
group by tablespace_name) tu
where df.tablespace_name = tu.tablespace_name
and df.totalspace <> 0;
Source: https://community.oracle.com/message/1832920
For your case if you want to know the partition name and it's size just run this query:
select owner,
segment_name,
partition_name,
segment_type,
bytes / 1024/1024 "MB"
from dba_segments
where owner = <owner_name>;
If you are tired of typing your password, create a (chmod 600) file ~/.my.cnf
, and put in it:
[client]
user = "you"
password = "your-password"
For the sake of conversation:
echo 'DROP DATABASE foo;' | mysql
You don't actually need LINQ for this because List<T>
provides a method that does exactly what you want: Find
.
Searches for an element that matches the conditions defined by the specified predicate, and returns the first occurrence within the entire
List<T>
.
Example code:
PricePublicModel result = pricePublicList.Find(x => x.Size == 200);
def to_str(key, value):
if isinstance(key, unicode):
key = str(key)
if isinstance(value, unicode):
value = str(value)
return key, value
pass key and value to it, and add recursion to your code to account for inner dictionary.
I had this same issue. The culprit was an external reference not being compatible with my project build settings. To resolve, I right clicked on the project->properties->build->Platform Target-> change from Any CPU to x86.
The particular *.dll that I was working with was System.Data.SQLite. That particular *.dll is hardcoded for 32 bit operation. The "Any CPU" setting attempted to load it as 64 bit.
No you can't pass parameters to the run()
method. The signature tells you that (it has no parameters). Probably the easiest way to do this would be to use a purpose-built object that takes a parameter in the constructor and stores it in a final variable:
public class WorkingTask implements Runnable
{
private final Object toWorkWith;
public WorkingTask(Object workOnMe)
{
toWorkWith = workOnMe;
}
public void run()
{
//do work
}
}
//...
Thread t = new Thread(new WorkingTask(theData));
t.start();
Once you do that - you have to be careful of the data integrity of the object you pass into the 'WorkingTask'. The data will now exist in two different threads so you have to make sure it is Thread Safe.
You could create a new List
and addAll()
of your other List
s to it. Then return an unmodifiable list with Collections.unmodifiableList()
.
Another important difference is that the Hashtable type supports lock-free multiple readers and a single writer at the same time, while Dictionary does not.
for i=1,#target do
game.Players.target[i].Character:BreakJoints()
end
Is incorrect, if "target" contains "FakeNameHereSoNoStalkers" then the run code would be:
game.Players.target.1.Character:BreakJoints()
Which is completely incorrect.
c = game.Players:GetChildren()
Never use "Players:GetChildren()", it is not guaranteed to return only players.
Instead use:
c = Game.Players:GetPlayers()
if msg:lower()=="me" then
table.insert(people, source)
return people
Here you add the player's name in the list "people", where you in the other places adds the player object.
Fixed code:
local Admins = {"FakeNameHereSoNoStalkers"}
function Kill(Players)
for i,Player in ipairs(Players) do
if Player.Character then
Player.Character:BreakJoints()
end
end
end
function IsAdmin(Player)
for i,AdminName in ipairs(Admins) do
if Player.Name:lower() == AdminName:lower() then return true end
end
return false
end
function GetPlayers(Player,Msg)
local Targets = {}
local Players = Game.Players:GetPlayers()
if Msg:lower() == "me" then
Targets = { Player }
elseif Msg:lower() == "all" then
Targets = Players
elseif Msg:lower() == "others" then
for i,Plr in ipairs(Players) do
if Plr ~= Player then
table.insert(Targets,Plr)
end
end
else
for i,Plr in ipairs(Players) do
if Plr.Name:lower():sub(1,Msg:len()) == Msg then
table.insert(Targets,Plr)
end
end
end
return Targets
end
Game.Players.PlayerAdded:connect(function(Player)
if IsAdmin(Player) then
Player.Chatted:connect(function(Msg)
if Msg:lower():sub(1,6) == ":kill " then
Kill(GetPlayers(Player,Msg:sub(7)))
end
end)
end
end)
you can just do
select rownum, l.* from student l where name like %ram%
this assigns the row number as the rows are fetched (so no guaranteed ordering of course).
if you wanted to order first do:
select rownum, l.*
from (select * from student l where name like %ram% order by...) l;
The setting for the list throttle
For addtional reading: http://blogs.msdn.com/b/dinaayoub/archive/2010/04/22/sharepoint-2010-how-to-change-the-list-view-threshold.aspx
Mostly likely middle click your mouse.
Or try Shift + Insert.
It all depends on terminal used and X11-config for mouse.
os.Mkdir
is used to create a single directory. To create a folder path, instead try using:
os.MkdirAll(folderPath, os.ModePerm)
func MkdirAll(path string, perm FileMode) error
MkdirAll creates a directory named path, along with any necessary parents, and returns nil, or else returns an error. The permission bits perm are used for all directories that MkdirAll creates. If path is already a directory, MkdirAll does nothing and returns nil.
Edit:
Updated to correctly use os.ModePerm
instead.
For concatenation of file paths, use package path/filepath
as described in @Chris' answer.
In todays JavaScript, this will work as well..
const getBase64FromUrl = async (url) => {
const data = await fetch(url);
const blob = await data.blob();
return new Promise((resolve) => {
const reader = new FileReader();
reader.readAsDataURL(blob);
reader.onloadend = function() {
const base64data = reader.result;
resolve(base64data);
}
});
}
getBase64FromUrl('https://lh3.googleusercontent.com/i7cTyGnCwLIJhT1t2YpLW-zHt8ZKalgQiqfrYnZQl975-ygD_0mOXaYZMzekfKW_ydHRutDbNzeqpWoLkFR4Yx2Z2bgNj2XskKJrfw8').then(console.log)
_x000D_
JSX isn't standard JavaScript, based to Airbnb style guide 'eslint' could consider this pattern
// filename: MyComponent.js
function MyComponent() {
return <div />;
}
as a warning, if you named your file MyComponent.jsx it will pass , unless if you edit the eslint rule you can check the style guide here
For what its worth, installing a system app to the /system/app
directory will be:
adb push appname.apk /system/app/
Just ensure you're in the right directory where the target .apk file to be installed is, or you could just copy the .apk file to the platform-tools
directory of the Android SDK and adb
would definitely find it.
There is a simple solution that consists in using stepi
, which in turns moves forward by 1 asm instruction and shows the surrounding asm code.
All you should need to do is:
# if the file in the right place isn't already committed:
git add <path to desired file>
# remove the "both deleted" file from the index:
git rm --cached ../public/images/originals/dog.ai
# commit the merge:
git commit
var xyz : NSDictionary?
// case 1:
xyz = ["1":"one"]
// case 2: (empty dictionary)
xyz = NSDictionary()
// case 3: do nothing
if xyz { NSLog("xyz is not nil.") }
else { NSLog("xyz is nil.") }
This test worked as expected in all cases.
BTW, you do not need the brackets ()
.
df = pd.DataFrame({'countries':['US','UK','Germany','China']})
countries = ['UK','China']
implement in:
df[df.countries.isin(countries)]
implement not in as in of rest countries:
df[df.countries.isin([x for x in np.unique(df.countries) if x not in countries])]
Use df.schema.names
:
spark.version
# u'2.2.0'
df = spark.createDataFrame([("foo", 1), ("bar", 2)])
df.show()
# +---+---+
# | _1| _2|
# +---+---+
# |foo| 1|
# |bar| 2|
# +---+---+
df.schema.names
# ['_1', '_2']
for i in df.schema.names:
# df_new = df.withColumn(i, [do-something])
print i
# _1
# _2
If you're talking about checking it out, you probably want the subversion itself. If you're interested in history, I'd use git-svn
. If you want the real subversion clone, I don't know, there was something. :)
Use the .readline()
method (Python 2 docs, Python 3 docs):
with open('myfile.txt') as f:
first_line = f.readline()
Some notes:
f.readline()
will contain a trailing newline. You may wish to use f.readline().strip()
instead to remove the newline.with
statement automatically closes the file again when the block ends.with
statement only works in Python 2.5 and up, and in Python 2.5 you need to use from __future__ import with_statement
You can also use the addClass and removeClass methods to toggle between items such as tabs.
e.g.
if($(element).hasClass("selected"))
$(element).removeClass("selected");
Use Array
's sort()
method, eg
myArray.sort(function(a, b) {
return a.distance - b.distance;
});
I was just looking for a smiliar issue and I found this:
.div{
height : 100vh;
}
more info
vw: 1/100th viewport width
vh: 1/100th viewport height
vmin: 1/100th of the smallest side
vmax: 1/100th of the largest side
Use imagesLoaded PACKAGED v3.1.8 (6.8 Kb when minimized). It is relatively old (since 2010) but still active project.
You can find it on github: https://github.com/desandro/imagesloaded
Their official site: http://imagesloaded.desandro.com/
Why it is better than using:
$(window).load()
Because you may want to load images dynamically, like this: jsfiddle
$('#button').click(function(){
$('#image').attr('src', '...');
});
You can just assign the string to a byte array (the reverse is also possible). The result is 2 numbers for each character, so Xmas converts to a byte array containing {88,0,109,0,97,0,115,0}
or you can use StrConv
Dim bytes() as Byte
bytes = StrConv("Xmas", vbFromUnicode)
which will give you {88,109,97,115} but in that case you cannot assign the byte array back to a string.
You can convert the numbers in the byte array back to characters using the Chr() function
Pattern rules let you compile multiple c files which require the same compilation commands using make
as follows:
objects = program1 program2
all: $(objects)
$(objects): %: %.c
$(CC) $(CFLAGS) -o $@ $<
The class is .navbar-default. You need to create a class on your custom css .navbar-default.And follow the css code. Also if you don’t want box-shadow on your menu, you can put on the same class.
.navbar-default {
background-color:transparent !important;
border-color:transparent;
background-image:none;
box-shadow:none;
}
To change font navbar color, the class is to change – .navbar-default .navbar-nav>li>a see the code bellow:
.navbar-default .navbar-nav>li>a {
font-size:20px;
color:#fff;
}
ref : http://twitterbootstrap.org/bootstrap-navbar-background-color-transparent/
If you read the docs (http://momentjs.com/docs/#/displaying/) you can find this format:
moment("2015-01-16T12:00:00").format("hh:mm:ss a")
See JS Fiddle http://jsfiddle.net/Bjolja/6mn32xhu/
Or even shorter, with only standard modern Javascript:
var first_link = document.getElementsByTagName('a')[0];
first_link.dispatchEvent(new MouseEvent('click'));
The new MouseEvent
constructor takes a required event type name, then an optional object (at least in Chrome). So you could, for example, set some properties of the event:
first_link.dispatchEvent(new MouseEvent('click', {bubbles: true, cancelable: true}));
The ESCAPE keyword is used if you need to search for special characters like % and _, which are normally wild cards. If you specify ESCAPE, SQL will search literally for the characters % and _.
Here's a good article with some more examples
SELECT columns FROM table WHERE
column LIKE '%[[]SQL Server Driver]%'
-- or
SELECT columns FROM table WHERE
column LIKE '%\[SQL Server Driver]%' ESCAPE '\'
This function generates random string consisting of upper,lowercase letters, digits, pass the length seperator, no_of_blocks to specify your string format
eg: len_sep = 4, no_of_blocks = 4 will generate the following pattern,
F4nQ-Vh5z-JKEC-WhuS
Where, length seperator will add "-" after 4 characters
XXXX-
no of blocks will generate the following patten of characters as string
XXXX - XXXX - XXXX - XXXX
if a single random string is needed, just keep the no_of_blocks variable to be equal to 1 and len_sep to specify the length of the random string.
eg: len_sep = 10, no_of_blocks = 1, will generate the following pattern ie. random string of length 10,
F01xgCdoDU
import random as r
def generate_random_string(len_sep, no_of_blocks):
random_string = ''
random_str_seq = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
for i in range(0,len_sep*no_of_blocks):
if i % len_sep == 0 and i != 0:
random_string += '-'
random_string += str(random_str_seq[r.randint(0, len(random_str_seq) - 1)])
return random_string
Do not set a height on the .collapse
tag. It affects the animation, if the height is overridden with css; it will not animate correctly.
As long as you override equals()
on each key and value contained in the map, then m1.equals(m2)
should be reliable to check for maps equality.
The same result can be obtained also by comparing toString()
of each map as you suggested, but using equals()
is a more intuitive approach.
May not be your specific situation, but if you store arrays in the map, may be a little tricky, because they must be compared value by value, or using Arrays.equals()
. More details about this see here.
In addition to the hotkey, if you right click in the gutter where you see the +/-, there is a context menu item 'Folding.' Opening the submenu associated with this, you can see a 'Collapse All' item. this will also do what you wish.
This is the correct way to change btn color.
.btn-primary:not(:disabled):not(.disabled).active,
.btn-primary:not(:disabled):not(.disabled):active,
.show>.btn-primary.dropdown-toggle{
color: #fff;
background-color: #F7B432;
border-color: #F7B432;
}
Are you using php 5.4 on your local? the render line is using the new way of initializing arrays. Try replacing ["title" => "Welcome "]
with array("title" => "Welcome ")
Stop wasting your time, just add the following encoding="cp437"
and errors='ignore'
to your code in both read and write:
open('filename.csv', encoding="cp437", errors='ignore')
open(file_name, 'w', newline='', encoding="cp437", errors='ignore')
Godspeed
The primary committer to node-mongodb-native says:
You open do MongoClient.connect once when your app boots up and reuse the db object. It's not a singleton connection pool each .connect creates a new connection pool.
So, to answer your question directly, reuse the db object that results from MongoClient.connect()
. This gives you pooling, and will provide a noticeable speed increase as compared with opening/closing connections on each db action.
This is all I did and restarted the server.
<tomcat-users>
<role rolename="tomcat"/>
<user username="tomcat" password="tomcat" roles="manager-gui"/>
</tomcat-users>
Watch your letter casing too. I spent a good hour chasing this bug.
<section id="forgotpwd" ng-controller="ForgotPwdController">
while I name the controller
angular
.module('app')
.controller('ForgotpwdController', ForgotpwdController);
They all should be consistently named, in this case ForgotpwdController with lower case p.
If you want to cancel pending requests on stateChangeStart with ui-router, you can use something like this:
// in service
var deferred = $q.defer();
var scope = this;
$http.get(URL, {timeout : deferred.promise, cancel : deferred}).success(function(data){
//do something
deferred.resolve(dataUsage);
}).error(function(){
deferred.reject();
});
return deferred.promise;
// in UIrouter config
$rootScope.$on('$stateChangeStart', function (event, toState, toParams, fromState, fromParams) {
//To cancel pending request when change state
angular.forEach($http.pendingRequests, function(request) {
if (request.cancel && request.timeout) {
request.cancel.resolve();
}
});
});
The amount of memory allocated for the Java process is pretty much on-par with what I would expect. I've had similar problems running Java on embedded/memory limited systems. Running any application with arbitrary VM limits or on systems that don't have adequate amounts of swap tend to break. It seems to be the nature of many modern apps that aren't design for use on resource-limited systems.
You have a few more options you can try and limit your JVM's memory footprint. This might reduce the virtual memory footprint:
-XX:ReservedCodeCacheSize=32m Reserved code cache size (in bytes) - maximum code cache size. [Solaris 64-bit, amd64, and -server x86: 48m; in 1.5.0_06 and earlier, Solaris 64-bit and and64: 1024m.]
-XX:MaxPermSize=64m Size of the Permanent Generation. [5.0 and newer: 64 bit VMs are scaled 30% larger; 1.4 amd64: 96m; 1.3.1 -client: 32m.]
Also, you also should set your -Xmx (max heap size) to a value as close as possible to the actual peak memory usage of your application. I believe the default behavior of the JVM is still to double the heap size each time it expands it up to the max. If you start with 32M heap and your app peaked to 65M, then the heap would end up growing 32M -> 64M -> 128M.
You might also try this to make the VM less aggressive about growing the heap:
-XX:MinHeapFreeRatio=40 Minimum percentage of heap free after GC to avoid expansion.
Also, from what I recall from experimenting with this a few years ago, the number of native libraries loaded had a huge impact on the minimum footprint. Loading java.net.Socket added more than 15M if I recall correctly (and I probably don't).
I see some of you doing return self
in __iter__
. I just wanted to note that __iter__
itself can be a generator (thus removing the need for __next__
and raising StopIteration
exceptions)
class range:
def __init__(self,a,b):
self.a = a
self.b = b
def __iter__(self):
i = self.a
while i < self.b:
yield i
i+=1
Of course here one might as well directly make a generator, but for more complex classes it can be useful.
From Oracle docs, Date.toString() method convert Date object to a String of the specific form - do not use toString method on Date object. Try to use:
String stringDate = new SimpleDateFormat(YOUR_STRING_PATTERN).format(yourDateObject);
Next step is parse stringDate to Date:
Date date = new SimpleDateFormat(OUTPUT_PATTERN).parse(stringDate);
Note that, parse method throws ParseException
Now Junit5 provides a way to assert the exceptions
You can test both general exceptions and customized exceptions
A general exception scenario:
ExpectGeneralException.java
public void validateParameters(Integer param ) {
if (param == null) {
throw new NullPointerException("Null parameters are not allowed");
}
}
ExpectGeneralExceptionTest.java
@Test
@DisplayName("Test assert NullPointerException")
void testGeneralException(TestInfo testInfo) {
final ExpectGeneralException generalEx = new ExpectGeneralException();
NullPointerException exception = assertThrows(NullPointerException.class, () -> {
generalEx.validateParameters(null);
});
assertEquals("Null parameters are not allowed", exception.getMessage());
}
You can find a sample to test CustomException here : assert exception code sample
ExpectCustomException.java
public String constructErrorMessage(String... args) throws InvalidParameterCountException {
if(args.length!=3) {
throw new InvalidParameterCountException("Invalid parametercount: expected=3, passed="+args.length);
}else {
String message = "";
for(String arg: args) {
message += arg;
}
return message;
}
}
ExpectCustomExceptionTest.java
@Test
@DisplayName("Test assert exception")
void testCustomException(TestInfo testInfo) {
final ExpectCustomException expectEx = new ExpectCustomException();
InvalidParameterCountException exception = assertThrows(InvalidParameterCountException.class, () -> {
expectEx.constructErrorMessage("sample ","error");
});
assertEquals("Invalid parametercount: expected=3, passed=2", exception.getMessage());
}
I have set a php code which can help in case you want to access Instagram images without api on basis of hashtag
How about:
import re
s = "alpha.Customer[cus_Y4o9qMEZAugtnW] ..."
m = re.search(r"\[([A-Za-z0-9_]+)\]", s)
print m.group(1)
For me this prints:
cus_Y4o9qMEZAugtnW
Note that the call to re.search(...)
finds the first match to the regular expression, so it doesn't find the [card]
unless you repeat the search a second time.
Edit: The regular expression here is a python raw string literal, which basically means the backslashes are not treated as special characters and are passed through to the re.search()
method unchanged. The parts of the regular expression are:
\[
matches a literal [
character(
begins a new group[A-Za-z0-9_]
is a character set matching any letter (capital or lower case), digit or underscore+
matches the preceding element (the character set) one or more times.)
ends the group\]
matches a literal ]
characterEdit: As D K has pointed out, the regular expression could be simplified to:
m = re.search(r"\[(\w+)\]", s)
since the \w
is a special sequence which means the same thing as [a-zA-Z0-9_]
depending on the re.LOCALE
and re.UNICODE
settings.
I believe you are looking for the outline
CSS property (in conjunction with active and hover psuedo attributes):
/* turn it off completely */
select:active, select:hover {
outline: none
}
/* make it red instead (with with same width and style) */
select:active, select:hover {
outline-color: red
}
Full details of outline, outline-color, outline-style, and outline-width https://developer.mozilla.org/en-US/docs/Web/CSS/outline
While @Andre is correct that there are issues with pseudo elements and their support, especially in older (IE) browsers, that support is improving all the time.
As for your question of, are there any issues, I'd say I've not really seen any, although the syntax for the pseudo-element can be a bit tricky, especially when first sussing it out. So:
div#top-level
declarations: ...
div.inside
declarations: ...
&:first-child
declarations: ...
which compiles as one would expect:
div#top-level{
declarations... }
div#top-level div.inside {
declarations... }
div#top-level div.inside:first-child {
declarations... }
I haven't seen any documentation on any of this, save for the statement that "sass can do everything that css can do." As always, with Haml and SASS the indentation is everything.
don't use "mute" alone, use [muted]="true" for example following code:
<video id="videoPlayer" [muted]="true" autoplay playsinline loop style="width:100%; height: 100%;">
<source type="video/mp4" src="assets/Video/Home.mp4">
<source type="video/webm" src="assets/Video/Home.webm">
</video>
I test in more Android and ios
The answer you selected is correct, however if you are using a sorting table it will crash since rowInfo will became undefined as you search, would recommend using this function instead
getTrGroupProps={(state, rowInfo, column, instance) => {
if (rowInfo !== undefined) {
return {
onClick: (e, handleOriginal) => {
console.log('It was in this row:', rowInfo)
this.setState({
firstNameState: rowInfo.row.firstName,
lastNameState: rowInfo.row.lastName,
selectedIndex: rowInfo.original.id
})
},
style: {
cursor: 'pointer',
background: rowInfo.original.id === this.state.selectedIndex ? '#00afec' : 'white',
color: rowInfo.original.id === this.state.selectedIndex ? 'white' : 'black'
}
}
}}
}
You could use the String Convert.ToBase64String(byte[]) to encode the byte array into a base64 string, then Byte[] Convert.FromBase64String(string) to convert the resulting string back into a byte array.
If you are here because of the Liquibase error saying:
Caused By: Precondition Error
...
Can't detect type of array [Ljava.lang.Short
and you are using
not {
indexExists()
}
precondition multiple times, then you are facing an old bug: https://liquibase.jira.com/browse/CORE-1342
We can try to execute an above check using bare sqlCheck
(Postgres):
SELECT COUNT(i.relname)
FROM
pg_class t,
pg_class i,
pg_index ix
WHERE
t.oid = ix.indrelid
and i.oid = ix.indexrelid
and t.relkind = 'r'
and t.relname = 'tableName'
and i.relname = 'indexName';
where tableName
- is an index table name and indexName
- is an index name
The syntax for using an alias in an update statement on SQL Server is as follows:
UPDATE Q
SET Q.TITLE = 'TEST'
FROM HOLD_TABLE Q
WHERE Q.ID = 101;
The alias should not be necessary here though.
The following documentation from the Docker website shows how to implement an SSH service in a docker container. It should be easily adaptable for your service:
A variation on this question has also been asked here:
The 64base method works for large images as well, I use that method to embed all the images into my website, and it works every time. I've done with files up to 2Mb size, jpg and png.
ImageView img = (ImageView) findViewById(R.id.myImageId);
img.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
// your code here
}
});
This won't help you step through code or break on errors, but it's a useful way to get the same debug console for your project on all browsers.
myLog = function() {
if (!myLog._div) { myLog.createDiv(); }
var logEntry = document.createElement('span');
for (var i=0; i < arguments.length; i++) {
logEntry.innerHTML += myLog.toJson(arguments[i]) + '<br />';
}
logEntry.innerHTML += '<br />';
myLog._div.appendChild(logEntry);
}
myLog.createDiv = function() {
myLog._div = document.body.appendChild(document.createElement('div'));
var props = {
position:'absolute', top:'10px', right:'10px', background:'#333', border:'5px solid #333',
color: 'white', width: '400px', height: '300px', overflow: 'auto', fontFamily: 'courier new',
fontSize: '11px', whiteSpace: 'nowrap'
}
for (var key in props) { myLog._div.style[key] = props[key]; }
}
myLog.toJSON = function(obj) {
if (typeof window.uneval == 'function') { return uneval(obj); }
if (typeof obj == 'object') {
if (!obj) { return 'null'; }
var list = [];
if (obj instanceof Array) {
for (var i=0;i < obj.length;i++) { list.push(this.toJson(obj[i])); }
return '[' + list.join(',') + ']';
} else {
for (var prop in obj) { list.push('"' + prop + '":' + this.toJson(obj[prop])); }
return '{' + list.join(',') + '}';
}
} else if (typeof obj == 'string') {
return '"' + obj.replace(/(["'])/g, '\\$1') + '"';
} else {
return new String(obj);
}
}
myLog('log statement');
myLog('logging an object', { name: 'Marcus', likes: 'js' });
This is put together pretty hastily and is a bit sloppy, but it's useful nonetheless and can be improved easily!
First of all, you're missing a quote at the beginning but this is probably a copy/paste error.
In Python 3.x, the end=' '
part will place a space after the displayed string instead of a newline. To do the same thing in Python 2.x, you'd put a comma at the end:
print "Building internam Index for %d tile(s) ..." % len(inputTiles),
I came here for a reminder of how to set up the query but the existing examples were hard to follow. Here is an example with more explanation.
SQLiteDatabase db = helper.getReadableDatabase();
String table = "table2";
String[] columns = {"column1", "column3"};
String selection = "column3 =?";
String[] selectionArgs = {"apple"};
String groupBy = null;
String having = null;
String orderBy = "column3 DESC";
String limit = "10";
Cursor cursor = db.query(table, columns, selection, selectionArgs, groupBy, having, orderBy, limit);
Parameters
table
: the name of the table you want to querycolumns
: the column names that you want returned. Don't return data that you don't need.selection
: the row data that you want returned from the columns (This is the WHERE clause.)selectionArgs
: This is substituted for the ?
in the selection
String above.groupBy
and having
: This groups duplicate data in a column with data having certain conditions. Any unneeded parameters can be set to null.orderBy
: sort the datalimit
: limit the number of results to returnThe problem is that you aren't correctly escaping the input string, try:
echo "\"member\":\"time\"" | grep -e "member\""
Alternatively, you can use unescaped double quotes within single quotes:
echo '"member":"time"' | grep -e 'member"'
It's a matter of preference which you find clearer, although the second approach prevents you from nesting your command within another set of single quotes (e.g. ssh 'cmd'
).
To do that, you must remove all '
charachters in your string or use an escape character. Like:
<?php
echo '<?php
echo \'hello world\';
?>';
?>
WARNING: Not for git newbies.
This comes up enough in my workflow that I've almost tried to write a new git command for it. The usual git stash
flow is the way to go but is a little awkward. I usually make a new commit first since if I have been looking at the changes, all the information is fresh in my mind and it's better to just start git commit
-ing what I found (usually a bugfix belonging on master that I discover while working on a feature branch) right away.
It is also helpful—if you run into situations like this a lot—to have another working directory alongside your current one that always have the
master
branch checked out.
So how I achieve this goes like this:
git commit
the changes right away with a good commit message.git reset HEAD~1
to undo the commit from current branch.Sometimes later (asynchronously), or immediately in another terminal window:
cd my-project-master
which is another WD sharing the same .git
git reflog
to find the bugfix I've just made.git cherry-pick SHA1
of the commit.Optionally (still asynchronous) you can then rebase (or merge) your feature branch to get the bugfix, usually when you are about to submit a PR and have cleaned your feature branch and WD already:
cd my-project
which is the main WD I'm working on.git rebase master
to get the bugfixes.This way I can keep working on the feature uninterrupted and not have to worry about git stash
-ing anything or having to clean my WD before a git checkout
(and then having the check the feature branch backout again.) and still have all my bugfixes goes to master
instead of hidden in my feature branch.
IMO git stash
and git checkout
is a real PIA when you are in the middle of working on some big feature.
Here is the complete solution
html code,
create the text anf file upload fields as shown below
<div class="form-group">
<div>
<label for="usr">User Name:</label>
<input type="text" id="usr" ng-model="model.username">
</div>
<div>
<label for="pwd">Password:</label>
<input type="password" id="pwd" ng-model="model.password">
</div><hr>
<div>
<div class="col-lg-6">
<input type="file" file-model="model.somefile"/>
</div>
</div>
<div>
<label for="dob">Dob:</label>
<input type="date" id="dob" ng-model="model.dob">
</div>
<div>
<label for="email">Email:</label>
<input type="email"id="email" ng-model="model.email">
</div>
<button type="submit" ng-click="saveData(model)" >Submit</button>
directive code
create a filemodel directive to parse file
.directive('fileModel', ['$parse', function ($parse) {
return {
restrict: 'A',
link: function(scope, element, attrs) {
var model = $parse(attrs.fileModel);
var modelSetter = model.assign;
element.bind('change', function(){
scope.$apply(function(){
modelSetter(scope, element[0].files[0]);
});
});
}
};}]);
Service code
append the file and fields to form data and do $http.post as shown below remember to keep 'Content-Type': undefined
.service('fileUploadService', ['$http', function ($http) {
this.uploadFileToUrl = function(file, username, password, dob, email, uploadUrl){
var myFormData = new FormData();
myFormData.append('file', file);
myFormData.append('username', username);
myFormData.append('password', password);
myFormData.append('dob', dob);
myFormData.append('email', email);
$http.post(uploadUrl, myFormData, {
transformRequest: angular.identity,
headers: {'Content-Type': undefined}
})
.success(function(){
})
.error(function(){
});
}
}]);
In controller
Now in controller call the service by sending required data to be appended in parameters,
$scope.saveData = function(model){
var file = model.myFile;
var uploadUrl = "/api/createUsers";
fileUpload.uploadFileToUrl(file, model.username, model.password, model.dob, model.email, uploadUrl);
};
One very small nit to pick:
The RFC for email addresses allows the first part to include an "@" sign if it is quoted. Example:
"john@work"@myemployer.com
This is quite uncommon, but could happen. Theoretically, you should split on the last "@" symbol, not the first:
SELECT LEN(EmailField) - CHARINDEX('@', REVERSE(EmailField)) + 1
More information:
You simply have to set the state
of the your button self.x
to normal
:
self.x['state'] = 'normal'
or
self.x.config(state="normal")
This code would go in the callback for the event that will cause the Button to be enabled.
Also, the right code should be:
self.x = Button(self.dialog, text="Download", state=DISABLED, command=self.download)
self.x.pack(side=LEFT)
The method pack
in Button(...).pack()
returns None
, and you are assigning it to self.x
. You actually want to assign the return value of Button(...)
to self.x
, and then, in the following line, use self.x.pack()
.
In any case you can know it:
mysql> select @@datadir;
+----------------------------------------------------------------+
| @@datadir |
+----------------------------------------------------------------+
| D:\Documents and Settings\b394382\My Documents\MySQL_5_1\data\ |
+----------------------------------------------------------------+
1 row in set (0.00 sec)
Thanks Barry Galbraith from the MySql Forum http://forums.mysql.com/read.php?10,379153,379167#msg-379167
This is for folks looking how to do it using HttpClient and file-saver:
npm install file-saver --save
npm install @types/file-saver --save
API Service class:
export() {
return this.http.get(this.download_endpoint,
{responseType: 'blob'});
}
Component:
import { saveAs } from 'file-saver';
exportPdf() {
this.api_service.export().subscribe(data => saveAs(data, `pdf report.pdf`));
}
It means you've already created a class.
For instance:
class Foo {}
// some code here
class Foo {}
That second Foo would throw the error.
git stash show -p | git apply
and then git stash drop
if you want to drop the stashed items.
This took me way too long to figure out. I can't believe nobody has mentioned center tags.
Ex:
<center><img src = "yourimage.png"/></center>
and if you want to resize the image to a percentage:
<center><img src = "yourimage.png" width = "75%"/></center>
GG America
Javascript doesn't have it, as you point out.
A quick search came up with:
function strcmp ( str1, str2 ) {
// http://kevin.vanzonneveld.net
// + original by: Waldo Malqui Silva
// + input by: Steve Hilder
// + improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
// + revised by: gorthaur
// * example 1: strcmp( 'waldo', 'owald' );
// * returns 1: 1
// * example 2: strcmp( 'owald', 'waldo' );
// * returns 2: -1
return ( ( str1 == str2 ) ? 0 : ( ( str1 > str2 ) ? 1 : -1 ) );
}
from http://kevin.vanzonneveld.net/techblog/article/javascript_equivalent_for_phps_strcmp/
Of course, you could just add localeCompare if needed:
if (typeof(String.prototype.localeCompare) === 'undefined') {
String.prototype.localeCompare = function(str, locale, options) {
return ((this == str) ? 0 : ((this > str) ? 1 : -1));
};
}
And use str1.localeCompare(str2)
everywhere, without having to worry wether the local browser has shipped with it. The only problem is that you would have to add support for locales
and options
if you care about that.
For pandas 0.17 and above, use this :
test = df.sort_values('one', ascending=False)
Since 'one' is a series in the pandas data frame, hence pandas will not accept the arguments in the form of a list.
There is very simple solution to this problem in the hablar package:
library(hablar)
dat %>% rationalize()
Which return a data frame with all Inf are converted to NA.
Timings compared to some above solutions. Code: library(hablar) library(data.table)
dat <- data.frame(a = rep(c(1,Inf), 1e6), b = rep(c(Inf,2), 1e6),
c = rep(c('a','b'),1e6),d = rep(c(1,Inf), 1e6),
e = rep(c(Inf,2), 1e6))
DT <- data.table(dat)
system.time(dat[mapply(is.infinite, dat)] <- NA)
system.time(dat[dat==Inf] <- NA)
system.time(invisible(lapply(names(DT),function(.name) set(DT, which(is.infinite(DT[[.name]])), j = .name,value =NA))))
system.time(rationalize(dat))
Result:
> system.time(dat[mapply(is.infinite, dat)] <- NA)
user system elapsed
0.125 0.039 0.164
> system.time(dat[dat==Inf] <- NA)
user system elapsed
0.095 0.010 0.108
> system.time(invisible(lapply(names(DT),function(.name) set(DT, which(is.infinite(DT[[.name]])), j = .name,value =NA))))
user system elapsed
0.065 0.002 0.067
> system.time(rationalize(dat))
user system elapsed
0.058 0.014 0.072
>
Seems like data.table is faster than hablar. But has longer syntax.
Use usort:
usort($array, function($a1, $a2) {
$v1 = strtotime($a1['date']);
$v2 = strtotime($a2['date']);
return $v1 - $v2; // $v2 - $v1 to reverse direction
});
The answer is to use Welford's algorithm, which is very clearly defined after the "naive methods" in:
It's more numerically stable than either the two-pass or online simple sum of squares collectors suggested in other responses. The stability only really matters when you have lots of values that are close to each other as they lead to what is known as "catastrophic cancellation" in the floating point literature.
You might also want to brush up on the difference between dividing by the number of samples (N) and N-1 in the variance calculation (squared deviation). Dividing by N-1 leads to an unbiased estimate of variance from the sample, whereas dividing by N on average underestimates variance (because it doesn't take into account the variance between the sample mean and the true mean).
I wrote two blog entries on the topic which go into more details, including how to delete previous values online:
You can also take a look at my Java implement; the javadoc, source, and unit tests are all online:
You forgot to close the mysql_query command:
mysql_query("INSERT INTO users (first, last, whenadded) VALUES ('$first', '$last', now())"
);
Note that last parentheses.
A more consistent (and less opaque) way to generate inf and -inf is to again use float():
>> positive_inf = float('inf')
>> positive_inf
inf
>> negative_inf = float('-inf')
>> negative_inf
-inf
Note that the size of a float varies depending on the architecture, so it probably best to avoid using magic numbers like 9e999, even if that is likely to work.
import sys
sys.float_info
sys.float_info(max=1.7976931348623157e+308,
max_exp=1024, max_10_exp=308,
min=2.2250738585072014e-308, min_exp=-1021,
min_10_exp=-307, dig=15, mant_dig=53,
epsilon=2.220446049250313e-16, radix=2, rounds=1)
Here's a solution using the new async/await syntax.
async function testWait() {
alert('going to wait for 5 second');
await wait(5000);
alert('finally wait is over');
}
function wait(time) {
return new Promise(resolve => {
setTimeout(() => {
resolve();
}, time);
});
}
Note: You can call function wait only in async functions
Try the JavaScript in operator.
if ('key' in myObj)
And the inverse.
if (!('key' in myObj))
Be careful! The in
operator matches all object keys, including those in the object's prototype chain.
Use myObj.hasOwnProperty('key')
to check an object's own keys and will only return true
if key
is available on myObj
directly:
myObj.hasOwnProperty('key')
Unless you have a specific reason to use the in
operator, using myObj.hasOwnProperty('key')
produces the result most code is looking for.
I can assure you both the answers will make first letter capital and will not make edittext single line.
If you want to do it in XMl below is the code
android:inputType="textCapWords|textCapSentences"
If want to do it in activity/fragment etc below is the code
momentTextView.setInputType(InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_FLAG_CAP_WORDS | InputType.TYPE_TEXT_FLAG_MULTI_LINE)
PS: If you are having nay other property also you can easily add it with a pipe "|" symbol, just make sure there is no space in xml between the attribute properties
Use sysdate-1 to subtract one day from system date.
select sysdate, sysdate -1 from dual;
Output:
SYSDATE SYSDATE-1
-------- ---------
22-10-13 21-10-13
Make sure your controller inherits from Controller
class.
It might even be crazier that stuff would work locally even without that.
You can use substring to get portio of String which is equal to 1 mb:
public static void main(String[] args) {
// Get length of String in bytes
String string = "long string";
long sizeInBytes = string.getBytes().length;
int oneMb=1024*1024;
if (sizeInBytes>oneMb) {
String string1Mb=string.substring(0, oneMb);
}
}
I felt like replying as well, explaining the same thing as the others a bit differently. I am sure you know most of this, but it might help someone else.
<a href="#" class="view">
The
href="#"
part is a commonly used way to make sure the link doesn't lead anywhere on it's own. the #-attribute is used to create a link to some other section in the same document. For example clicking a link of this kind:
<a href="#news">Go to news</a>
will take you to wherever you have the
<a name="news"></a>
code. So if you specify # without any name like in your case, the link leads nowhere.
The
class="view"
part gives it an identifier that CSS or javascript can use. Inside the CSS-files (if you have any) you will find specific styling procedures on all the elements tagged with the "view"-class.
To find out where the URL is specified I would look in the javascript code. It is either written directly in the same document or included from another file.
Search your source code for something like:
<script type="text/javascript"> bla bla bla </script>
or
<script> bla bla bla </script>
and then search for any reference to your "view"-class. An included javascript file can look something like this:
<script type="text/javascript" src="include/javascript.js"></script>
In that case, open javascript.js under the "include" folder and search in that file. Most commonly the includes are placed between <head>
and </head>
or close to the </body>
-tag.
A faster way to find the link is to search for the actual link it goes to. For example, if you are directed to http://www.google.com/search?q=html when you click it, search for "google.com" or something in all the files you have in your web project, just remember the included files.
In many text editors you can open all the files at once, and then search in them all for something.
If you want to to know how to return a value from stored procedure to Visual Basic.NET. Please read this tutorial: How to return a value from stored procedure
I used the following stored procedure to return the value.
CREATE PROCEDURE usp_get_count
AS
BEGIN
DECLARE @VALUE int;
SET @VALUE=(SELECT COUNT(*) FROM tblCar);
RETURN @VALUE;
END
GO
You're missing service name:
SQL> connect username/password@hostname:port/SERVICENAME
EDIT
If you can connect to the database from other computer try running there:
select sys_context('USERENV','SERVICE_NAME') from dual
and
select sys_context('USERENV','SID') from dual
When you have changes on your working copy, from command line do:
git stash
This will stash your changes and clear your status report
git pull
This will pull changes from upstream branch. Make sure it says fast-forward in the report. If it doesn't, you are probably doing an unintended merge
git stash pop
This will apply stashed changes back to working copy and remove the changes from stash unless you have conflicts. In the case of conflict, they will stay in stash so you can start over if needed.
if you need to see what is in your stash
git stash list
Test if SSH over the HTTPS port is possible, run this SSH command:
$ ssh -T -p 443 [email protected]
Hi username! You've successfully authenticated, but GitHub does not
provide shell access.
If that worked, great! If not, you may need to follow our troubleshooting guide.
If you are able to SSH into [email protected]
over port 443, you can override your SSH settings to force any connection to GitHub to run though that server and port.
To set this in your ssh config, edit the file at ~/.ssh/config
, and add this section:
Host github.com
Hostname ssh.github.com
Port 443
You can test that this works by connecting once more to GitHub:
$ ssh -T [email protected]
Hi username! You've successfully authenticated, but GitHub does not
provide shell access.
From Authenticating to GitHub / Using SSH over the HTTPS port
For people just stumbling upon this now, I resolved an error of this type that was thrown with all the references and using statements placed properly. There's evidently some confusion with substituting in a function that returns DataTable instead of calling it on a declared DataTable. For example:
This worked for me:
DataTable dt = SomeObject.ReturnsDataTable();
List<string> ls = dt.AsEnumerable().Select(dr => dr["name"].ToString()).ToList<string>();
But this didn't:
List<string> ls = SomeObject.ReturnsDataTable().AsEnumerable().Select(dr => dr["name"].ToString()).ToList<string>();
I'm still not 100% sure why, but if anyone is frustrated by an error of this type, give this a try.
Additional to nanselm2's answer, you can use 0
instead of False
:
df["col"].str.contains(word)==0
In general,
variable=$(command)
or
variable=`command`
The latter one is the old syntax, prefer $(command)
.
Note: variable = ....
means execute the command variable
with the first argument =
, the second ....
If you are using Angular CLI 6, you can use the deployUrl/baseHref options in angular.json (projects > xxx > architect > build > configurations > production). In this way, you can easily specify the baseUrl per project.
Check that your settings are correct by looking at the index.html of the built app.
Suppose your function enters data in columns A and B and you want to a custom Userform to appear if the user selects a cell in column C. One way to do this is to use the SelectionChange
event:
Private Sub Worksheet_SelectionChange(ByVal Target As Range)
Dim clickRng As Range
Dim lastRow As Long
lastRow = Range("A1").End(xlDown).Row
Set clickRng = Range("C1:C" & lastRow) //Dynamically set cells that can be clicked based on data in column A
If Not Intersect(Target, clickRng) Is Nothing Then
MyUserForm.Show //Launch custom userform
End If
End Sub
Note that the userform will appear when a user selects any cell in Column C and you might want to populate each cell in Column C with something like "select cell to launch form" to make it obvious that the user needs to perform an action (having a button naturally suggests that it should be clicked)
You are dealing with a HttpPostedFile; this is the file that is "uploaded" to the web server. You really need to save that file somewhere and then use it, because...
...in your instance, it just so happens to be that you are hosting your website on the same machine the file resides, so the path is accessible. As soon as you deploy your site to a different machine, your code isn't going to work.
Break this down into two steps:
1) Save the file somewhere - it's very common to see this:
string saveFolder = @"C:\temp\uploads"; //Pick a folder on your machine to store the uploaded files
string filePath = Path.Combine(saveFolder, FileUpload1.FileName);
FileUpload1.SaveAs(filePath);
Now you have your file locally and the real work can be done.
2) Get the data from the file. Your code should work as is but you can simply write your connection string this way:
string excelConnString = String.Format("Provider=Microsoft.Jet.OLEDB.4.0;Data Source={0};Extended Properties="Excel 12.0";", filePath);
You can then think about deleting the file you've just uploaded and imported.
To provide a more concrete example, we can refactor your code into two methods:
private void SaveFileToDatabase(string filePath)
{
String strConnection = "Data Source=.\\SQLEXPRESS;AttachDbFilename='C:\\Users\\Hemant\\documents\\visual studio 2010\\Projects\\CRMdata\\CRMdata\\App_Data\\Database1.mdf';Integrated Security=True;User Instance=True";
String excelConnString = String.Format("Provider=Microsoft.ACE.OLEDB.12.0;Data Source={0};Extended Properties=\"Excel 12.0\"", filePath);
//Create Connection to Excel work book
using (OleDbConnection excelConnection = new OleDbConnection(excelConnString))
{
//Create OleDbCommand to fetch data from Excel
using (OleDbCommand cmd = new OleDbCommand("Select [ID],[Name],[Designation] from [Sheet1$]", excelConnection))
{
excelConnection.Open();
using (OleDbDataReader dReader = cmd.ExecuteReader())
{
using(SqlBulkCopy sqlBulk = new SqlBulkCopy(strConnection))
{
//Give your Destination table name
sqlBulk.DestinationTableName = "Excel_table";
sqlBulk.WriteToServer(dReader);
}
}
}
}
}
private string GetLocalFilePath(string saveDirectory, FileUpload fileUploadControl)
{
string filePath = Path.Combine(saveDirectory, fileUploadControl.FileName);
fileUploadControl.SaveAs(filePath);
return filePath;
}
You could simply then call SaveFileToDatabase(GetLocalFilePath(@"C:\temp\uploads", FileUpload1));
Consider reviewing the other Extended Properties for your Excel connection string. They come in useful!
Other improvements you might want to make include putting your Sql Database connection string into config, and adding proper exception handling. Please consider this example for demonstration only!
To build this list I used 2 sources. A Study In Scarlet and RATS. I have also added some of my own to the mix and people on this thread have helped out.
Edit: After posting this list I contacted the founder of RIPS and as of now this tools searches PHP code for the use of every function in this list.
Most of these function calls are classified as Sinks. When a tainted variable (like $_REQUEST) is passed to a sink function, then you have a vulnerability. Programs like RATS and RIPS use grep like functionality to identify all sinks in an application. This means that programmers should take extra care when using these functions, but if they where all banned then you wouldn't be able to get much done.
"With great power comes great responsibility."
--Stan Lee
exec - Returns last line of commands output
passthru - Passes commands output directly to the browser
system - Passes commands output directly to the browser and returns last line
shell_exec - Returns commands output
`` (backticks) - Same as shell_exec()
popen - Opens read or write pipe to process of a command
proc_open - Similar to popen() but greater degree of control
pcntl_exec - Executes a program
Apart from eval
there are other ways to execute PHP code: include
/require
can be used for remote code execution in the form of Local File Include and Remote File Include vulnerabilities.
eval()
assert() - identical to eval()
preg_replace('/.*/e',...) - /e does an eval() on the match
create_function()
include()
include_once()
require()
require_once()
$_GET['func_name']($_GET['argument']);
$func = new ReflectionFunction($_GET['func_name']); $func->invoke(); or $func->invokeArgs(array());
These functions accept a string parameter which could be used to call a function of the attacker's choice. Depending on the function the attacker may or may not have the ability to pass a parameter. In that case an Information Disclosure
function like phpinfo()
could be used.
Function => Position of callback arguments
'ob_start' => 0,
'array_diff_uassoc' => -1,
'array_diff_ukey' => -1,
'array_filter' => 1,
'array_intersect_uassoc' => -1,
'array_intersect_ukey' => -1,
'array_map' => 0,
'array_reduce' => 1,
'array_udiff_assoc' => -1,
'array_udiff_uassoc' => array(-1, -2),
'array_udiff' => -1,
'array_uintersect_assoc' => -1,
'array_uintersect_uassoc' => array(-1, -2),
'array_uintersect' => -1,
'array_walk_recursive' => 1,
'array_walk' => 1,
'assert_options' => 1,
'uasort' => 1,
'uksort' => 1,
'usort' => 1,
'preg_replace_callback' => 1,
'spl_autoload_register' => 0,
'iterator_apply' => 1,
'call_user_func' => 0,
'call_user_func_array' => 0,
'register_shutdown_function' => 0,
'register_tick_function' => 0,
'set_error_handler' => 0,
'set_exception_handler' => 0,
'session_set_save_handler' => array(0, 1, 2, 3, 4, 5),
'sqlite_create_aggregate' => array(2, 3),
'sqlite_create_function' => 2,
Most of these function calls are not sinks. But rather it maybe a vulnerability if any of the data returned is viewable to an attacker. If an attacker can see phpinfo()
it is definitely a vulnerability.
phpinfo
posix_mkfifo
posix_getlogin
posix_ttyname
getenv
get_current_user
proc_get_status
get_cfg_var
disk_free_space
disk_total_space
diskfreespace
getcwd
getlastmo
getmygid
getmyinode
getmypid
getmyuid
extract - Opens the door for register_globals attacks (see study in scarlet).
parse_str - works like extract if only one argument is given.
putenv
ini_set
mail - has CRLF injection in the 3rd parameter, opens the door for spam.
header - on old systems CRLF injection could be used for xss or other purposes, now it is still a problem if they do a header("location: ..."); and they do not die();. The script keeps executing after a call to header(), and will still print output normally. This is nasty if you are trying to protect an administrative area.
proc_nice
proc_terminate
proc_close
pfsockopen
fsockopen
apache_child_terminate
posix_kill
posix_mkfifo
posix_setpgid
posix_setsid
posix_setuid
According to RATS all filesystem functions in php are nasty. Some of these don't seem very useful to the attacker. Others are more useful than you might think. For instance if allow_url_fopen=On
then a url can be used as a file path, so a call to copy($_GET['s'], $_GET['d']);
can be used to upload a PHP script anywhere on the system.
Also if a site is vulnerable to a request send via GET everyone of those file system functions can be abused to channel and attack to another host through your server.
// open filesystem handler
fopen
tmpfile
bzopen
gzopen
SplFileObject->__construct
// write to filesystem (partially in combination with reading)
chgrp
chmod
chown
copy
file_put_contents
lchgrp
lchown
link
mkdir
move_uploaded_file
rename
rmdir
symlink
tempnam
touch
unlink
imagepng - 2nd parameter is a path.
imagewbmp - 2nd parameter is a path.
image2wbmp - 2nd parameter is a path.
imagejpeg - 2nd parameter is a path.
imagexbm - 2nd parameter is a path.
imagegif - 2nd parameter is a path.
imagegd - 2nd parameter is a path.
imagegd2 - 2nd parameter is a path.
iptcembed
ftp_get
ftp_nb_get
// read from filesystem
file_exists
file_get_contents
file
fileatime
filectime
filegroup
fileinode
filemtime
fileowner
fileperms
filesize
filetype
glob
is_dir
is_executable
is_file
is_link
is_readable
is_uploaded_file
is_writable
is_writeable
linkinfo
lstat
parse_ini_file
pathinfo
readfile
readlink
realpath
stat
gzfile
readgzfile
getimagesize
imagecreatefromgif
imagecreatefromjpeg
imagecreatefrompng
imagecreatefromwbmp
imagecreatefromxbm
imagecreatefromxpm
ftp_put
ftp_nb_put
exif_read_data
read_exif_data
exif_thumbnail
exif_imagetype
hash_file
hash_hmac_file
hash_update_file
md5_file
sha1_file
highlight_file
show_source
php_strip_whitespace
get_meta_tags
string[] lines = Regex.Split(value, ".{5}");
string out = "";
foreach (string line in lines)
{
out += "-" + line;
}
out = out.Substring(1);
While using regex is typically less performant than non-regex techniques, I do appreciate the control and flexibility that it affords.
In my snippet, I will set the pattern to be case-insensitive (\i
, although my sample input will not challenge this rule) and include word boundaries (\b
, although they were not explicitly called for).
I am also going to use the \K
metacharacter to reset the fullstring match so that no capture groups / backreferences are needed.
Code: (Demo)
$search = 'The';
$replace = 'A';
$subject = "The Quick Brown Fox Jumps Over The Lazy Dog's Thermos!";
echo preg_replace(
'/.*\K\b' . preg_quote($search, '/') . '\b/i',
$replace,
$subject
);
Output:
The Quick Brown Fox Jumps Over A Lazy Dog's Thermos!
# ^^^ ^ ^^^
# not replaced replaced not replaced
Without word boundaries: (Demo)
echo preg_replace(
'/.*\K' . preg_quote($search, '/') . '/i',
$replace,
$subject
);
Output:
The Quick Brown Fox Jumps Over The Lazy Dog's Armos!
# ^^^ ^^^ ^
# not replaced not replaced replaced
The difference between 'throw new Error' and 'throw someObject' in javascript is that throw new Error wraps the error passed to it in the following format -
{ name: 'Error', message: 'String you pass in the constructor' }
The throw someObject will throw the object as is and will not allow any further code execution from the try block, ie same as throw new Error.
Here is a good explanation about The Error object and throwing your own errors
The Error Object
Just what we can extract from it in an event of an error? The Error object in all browsers support the following two properties:
name: The name of the error, or more specifically, the name of the constructor function the error belongs to.
message: A description of the error, with this description varying depending on the browser.
Six possible values can be returned by the name property, which as mentioned correspond to the names of the error's constructors. They are:
Error Name Description
EvalError An error in the eval() function has occurred.
RangeError Out of range number value has occurred.
ReferenceError An illegal reference has occurred.
SyntaxError A syntax error within code inside the eval() function has occurred.
All other syntax errors are not caught by try/catch/finally, and will
trigger the default browser error message associated with the error.
To catch actual syntax errors, you may use the onerror event.
TypeError An error in the expected variable type has occurred.
URIError An error when encoding or decoding the URI has occurred
(ie: when calling encodeURI()).
Throwing your own errors (exceptions)
Instead of waiting for one of the 6 types of errors to occur before control is automatically transferred from the try block to the catch block, you can also explicitly throw your own exceptions to force that to happen on demand. This is great for creating your own definitions of what an error is and when control should be transferred to catch.
You can use the datedif function to find out difference in days.
=DATEDIF(A1,TODAY(),"d")
Quote from excel.datedif.com
The mysterious datedif function in Microsoft Excel
The Datedif function is used to calculate interval between two dates in days, months or years.
This function is available in all versions of Excel but is not documented. It is not even listed in the "Insert Function" dialog box. Hence it must be typed manually in the formula box. Syntax
DATEDIF( start_date, end_date, interval_unit )
start_date from date end_date to date (must be after start_date) interval_unit Unit to be used for output interval Values for interval_unit
interval_unit Description
D Number of days
M Number of complete months
Y Number of complete years
YD Number of days excluding years
MD Number of days excluding months and years
YM Number of months excluding years
Error Description
#NUM! The end_date is later than (greater than) the start_date or interval_unit has an invalid value. #VALUE! end_date or start_date is invalid.
In your AVD advanced settings, you should be able to set front and back cameras to Webcam()
or Emulated
.
An alternative solution, which is portable and with higher precision, available since C++11, is to use std::chrono
.
Here is an example:
#include <iostream>
#include <chrono>
typedef std::chrono::high_resolution_clock Clock;
int main()
{
auto t1 = Clock::now();
auto t2 = Clock::now();
std::cout << "Delta t2-t1: "
<< std::chrono::duration_cast<std::chrono::nanoseconds>(t2 - t1).count()
<< " nanoseconds" << std::endl;
}
Running this on ideone.com gave me:
Delta t2-t1: 282 nanoseconds
Your problem is not actually specific to ejs.
2 things to note here
style.css is an external css file. So you dont need style tags inside that file. It should only contain the css.
In your express app, you have to mention the public directory from which you are serving the static files. Like css/js/image
it can be done by
app.use(express.static(__dirname + '/public'));
assuming you put the css files in public folder from in your app root. now you have to refer to the css files in your tamplate files, like
<link href="/css/style.css" rel="stylesheet" type="text/css">
Here i assume you have put the css file in css folder inside your public folder.
So folder structure would be
.
./app.js
./public
/css
/style.css
Getting one char from string at specified index
Dim pos As Integer
Dim outStr As String
pos = 2
Dim outStr As String
outStr = Left(Mid("abcdef", pos), 1)
outStr="b"
If you're doing this to several fields, or doing it quite often, then perhaps a plugin is the answer.
Here's the beginnings of a jQuery plugin that formats the value of a field to two decimal places.
It is triggered by the onchange event of the field. You may want something different.
<script type="text/javascript">
// mini jQuery plugin that formats to two decimal places
(function($) {
$.fn.currencyFormat = function() {
this.each( function( i ) {
$(this).change( function( e ){
if( isNaN( parseFloat( this.value ) ) ) return;
this.value = parseFloat(this.value).toFixed(2);
});
});
return this; //for chaining
}
})( jQuery );
// apply the currencyFormat behaviour to elements with 'currency' as their class
$( function() {
$('.currency').currencyFormat();
});
</script>
<input type="text" name="one" class="currency"><br>
<input type="text" name="two" class="currency">
Here is a UITableView extension with Swift 5:
import UIKit
extension UITableView
{
func updateRow(row: Int, section: Int = 0)
{
let indexPath = IndexPath(row: row, section: section)
self.beginUpdates()
self.reloadRows(at: [indexPath as IndexPath], with: UITableView.RowAnimation.automatic)
self.endUpdates()
}
}
Call with
self.tableView.updateRow(row: 1)
When EDMX create this time if you select stored procedured in table select option then just call store procedured using procedured name...
var num1 = 1;
var num2 = 2;
var result = context.proc_name(num1,num2).tolist();// list or single you get here.. using same thing you can call insert,update or delete procedured.
" ".repeat(10);
generate(() -> " ").limit(10).collect(joining());
where:
import static java.util.stream.Collectors.joining;
import static java.util.stream.Stream.generate;
You should only use extern template
to force the compiler to not instantiate a template when you know that it will be instantiated somewhere else. It is used to reduce compile time and object file size.
For example:
// header.h
template<typename T>
void ReallyBigFunction()
{
// Body
}
// source1.cpp
#include "header.h"
void something1()
{
ReallyBigFunction<int>();
}
// source2.cpp
#include "header.h"
void something2()
{
ReallyBigFunction<int>();
}
This will result in the following object files:
source1.o
void something1()
void ReallyBigFunction<int>() // Compiled first time
source2.o
void something2()
void ReallyBigFunction<int>() // Compiled second time
If both files are linked together, one void ReallyBigFunction<int>()
will be discarded, resulting in wasted compile time and object file size.
To not waste compile time and object file size, there is an extern
keyword which makes the compiler not compile a template function. You should use this if and only if you know it is used in the same binary somewhere else.
Changing source2.cpp
to:
// source2.cpp
#include "header.h"
extern template void ReallyBigFunction<int>();
void something2()
{
ReallyBigFunction<int>();
}
Will result in the following object files:
source1.o
void something1()
void ReallyBigFunction<int>() // compiled just one time
source2.o
void something2()
// No ReallyBigFunction<int> here because of the extern
When both of these will be linked together, the second object file will just use the symbol from the first object file. No need for discard and no wasted compile time and object file size.
This should only be used within a project, like in times when you use a template like vector<int>
multiple times, you should use extern
in all but one source file.
This also applies to classes and function as one, and even template member functions.
From the @LearnRPG answer but with 1.0:
// send to current request socket client
socket.emit('message', "this is a test");
// sending to all clients, include sender
io.sockets.emit('message', "this is a test"); //still works
//or
io.emit('message', 'this is a test');
// sending to all clients except sender
socket.broadcast.emit('message', "this is a test");
// sending to all clients in 'game' room(channel) except sender
socket.broadcast.to('game').emit('message', 'nice game');
// sending to all clients in 'game' room(channel), include sender
// docs says "simply use to or in when broadcasting or emitting"
io.in('game').emit('message', 'cool game');
// sending to individual socketid, socketid is like a room
socket.broadcast.to(socketid).emit('message', 'for your eyes only');
To answer @Crashalot comment, socketid
comes from:
var io = require('socket.io')(server);
io.on('connection', function(socket) { console.log(socket.id); })
It might be a java interpreter defect, but java on HPUX does not do a kill -9, but only a kill -TERM.
I did a small test testDestroy.java:
ProcessBuilder pb = new ProcessBuilder(args);
Process process = pb.start();
Thread.sleep(1000);
process.destroy();
process.waitFor();
And the invocation:
$ tusc -f -p -s signal,kill -e /opt/java1.5/bin/java testDestroy sh -c 'trap "echo TERM" TERM; sleep 10'
dies after 10s (not killed after 1s as expected) and shows:
...
[19999] Received signal 15, SIGTERM, in waitpid(), [caught], no siginfo
[19998] kill(19999, SIGTERM) ............................................................................. = 0
...
Doing the same on windows seems to kill the process fine even if signal is handled (but that might be due to windows not using signals to destroy).
Actually i found Java - Process.destroy() source code for Linux related thread and openjava implementation seems to use -TERM as well, which seems very wrong.
Spring 3.1 and Guava 1.13.1:
@EnableCaching
@Configuration
public class CacheConfiguration implements CachingConfigurer {
@Override
public CacheManager cacheManager() {
ConcurrentMapCacheManager cacheManager = new ConcurrentMapCacheManager() {
@Override
protected Cache createConcurrentMapCache(final String name) {
return new ConcurrentMapCache(name,
CacheBuilder.newBuilder().expireAfterWrite(30, TimeUnit.MINUTES).maximumSize(100).build().asMap(), false);
}
};
return cacheManager;
}
@Override
public KeyGenerator keyGenerator() {
return new DefaultKeyGenerator();
}
}
If you want to display the menu up, just add the class "dropup"
and remove the class "dropdown" if exists from the same div.
<div class="btn-group dropup">
I recently had the same issue while trying to access domains using CloudFlare Origin CA.
The only way I found to workaround/avoid HSTS cert exception on Chrome (Windows build) was following the short instructions in https://support.opendns.com/entries/66657664.
The workaround:
Add to Chrome shortcut the flag --ignore-certificate-errors
, then reopen it and surf to your website.
Reminder:
Use it only for development purposes.
The simplest way is to define it as a global function in a .h
file, and call it whenever you want, if your program is modular with lots of files. If not, double MIN(a,b){return (a<b?a:b)}
is the simplest way.
Still no download functionality supported.. BUT.. you can use the jsfiddle-downloader node script.
Installation:
npm install jsfiddle-downloader -g
To download a single fiddle from its id:
jsfiddle-downloader -i <fiddle-id> [-o <output file>]
To download a single fiddle from its url:
jsfiddle-downloader -l <url> [-o <output file>]
jsfiddle-downloader -l jsfiddle.net/<user>/<fiddle-id>
jsfiddle-downloader -l https://jsfiddle.net/<fiddle-id>
jsfiddle-downloader -l https://jsfiddle.net/<user>/<fiddle-id>/show/ -o myfiddle.html
To download all scripts of a determinated 'user' from jsFiddle.net:
jsfiddle-downloader -u <user> [-o <output file>]
It'll download all backups in the currrent directory, the jsFiddles scripts will be named as:
[<output-folder>/]<id-fiddle>.html
$("#co").click(function(){
$(this).css({"backgroundColor" : "blue"});
});
I would recommend giving Trackjs a try.
It's error logging as a service.
It's amazingly simple to set up. Just add one <script> line to each page and that's it. This also means it will be amazingly simple to remove if you decide you don't like it.
There are other services like Sentry (which is open-source if you can host your own server), but it doesn't do what Trackjs does. Trackjs records the user's interaction between their browser and your webserver so that you can actually trace the user steps that led to the error, as opposed to just a file and line number reference (and maybe stack trace).
Without having Visual Studio, you can grab Nuget from: http://nuget.org/nuget.exe
For command-line executions using this, check out: http://docs.nuget.org/docs/reference/command-line-reference
With respect to Powershell, just copy the nuget.exe to the machine. No installation required, just execute it using commands from the above documentation.
As everyone else told you, you can convert it directly... UNLESS you meant something like "how can I convert an ASCII Extended character to its UTF-16 or UTF-32 value". This is a TOTALLY different question (one at least as good). And one quite difficult, if I remember correctly, if you are using only "pure" C. Then you could start here: https://stackoverflow.com/questions/114611/what-is-the-best-unicode-library-for-c/114643#114643
(for ASCII Extended I mean one of the many "extensions" to the ASCII set. The 0-127 characters of the base ASCII set are directly convertible to Unicode, while the 128-255 are not.). For example ISO_8859-1 http://en.wikipedia.org/wiki/ISO_8859-1 is an 8 bit extensions to the 7 bit ASCII set, or the (quite famous) codepages 437 and 850.
If you know the commit you want to return to is the head of some branch, or is tagged, then you can just
git checkout branchname
You can also use git reflog
to see what other commits your HEAD (or any other ref) has pointed to in the past.
Edited to add:
In newer versions of Git, if you only ran git checkout
or something else to move your HEAD
once, you can also do
git checkout -
to switch back to wherever it was before the last checkout. This was motivated by the analogy to the shell idiom cd -
to go back to whatever working directory one was previously in.
According to Nathan's answer, this makes perfect sense (for red and orange parts, maybe you could use div
's and/or header
and footer
respectively):
I hope this'll do . or else, may ask me directly
_x000D_
Sub RemoveBlankLines()
Application.ScreenUpdating = False
Dim rngCel As Range
Dim strOldVal As String
Dim strNewVal As String
For Each rngCel In Selection
If rngCel.HasFormula = False Then
strOldVal = rngCel.Value
strNewVal = strOldVal
Debug.Print rngCel.Address
Do
If Left(strNewVal, 1) = vbLf Then strNewVal = Right(strNewVal, Len(strNewVal) - 1)
If strNewVal = strOldVal Then Exit Do
strOldVal = strNewVal
Loop
Do
If Right(strNewVal, 1) = vbLf Then strNewVal = Left(strNewVal, Len(strNewVal) - 1)
If strNewVal = strOldVal Then Exit Do
strOldVal = strNewVal
Loop
Do
strNewVal = Replace(strNewVal, vbLf & vbLf, "^")
strNewVal = Replace(strNewVal, Replace(String(Len(strNewVal) - _
Len(Replace(strNewVal, "^", "")), "^"), "^", "^"), "^")
strNewVal = Replace(strNewVal, "^", vbLf)
If strNewVal = strOldVal Then Exit Do
strOldVal = strNewVal
Loop
If rngCel.Value <> strNewVal Then
rngCel = strNewVal
End If
rngCel.Value = Application.Trim(rngCel.Value)
End If
Next rngCel
Application.ScreenUpdating = True
End Sub
_x000D_
Summary (@Freek Wiekmeijer, @gtalarico) other's answer:
authentication
, then can access, otherwise 405 Not Allowed
authentication
=grant access
method are:
cookie
auth header
Basic xxx
Authorization xxx
cookie
in requests
to authcookie
in headers
cookie
by requests
's
session
to auto manage cookiesresponse.cookies
to manually set cookiesrequests
's session
auto manage cookiescurSession = requests.Session()
# all cookies received will be stored in the session object
payload={'username': "yourName",'password': "yourPassword"}
curSession.post(firstUrl, data=payload)
# internally return your expected cookies, can use for following auth
# internally use previously generated cookies, can access the resources
curSession.get(secondUrl)
curSession.get(thirdUrl)
requests
's response.cookies
payload={'username': "yourName",'password': "yourPassword"}
resp1 = requests.post(firstUrl, data=payload)
# manually pass previously returned cookies into following request
resp2 = requests.get(secondUrl, cookies= resp1.cookies)
resp3 = requests.get(thirdUrl, cookies= resp2.cookies)
I solved it this way:
<servlet-mapping>
<servlet-name>Spring MVC Dispatcher Servlet</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>default</servlet-name>
<url-pattern>*.jpg</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>default</servlet-name>
<url-pattern>*.png</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>default</servlet-name>
<url-pattern>*.gif</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>default</servlet-name>
<url-pattern>*.js</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>default</servlet-name>
<url-pattern>*.css</url-pattern>
</servlet-mapping>
This works on Tomcat and ofcourse Jboss. However in the end I decided to use the solution Spring provides (as mentioned by rozky) which is far more portable.
Just proxy_set_header Host $host miss port for my case. Solved by:
location / {
proxy_pass http://BACKENDIP/;
include /etc/nginx/proxy.conf;
}
and then in the proxy.conf
proxy_redirect off;
proxy_set_header Host $host:$server_port;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
from itertools import chain, repeat
prompts = chain(["Enter a number: "], repeat("Not a number! Try again: "))
replies = map(input, prompts)
valid_response = next(filter(str.isdigit, replies))
print(valid_response)
Enter a number: a
Not a number! Try again: b
Not a number! Try again: 1
1
or if you want to have a "bad input" message separated from an input prompt as in other answers:
prompt_msg = "Enter a number: "
bad_input_msg = "Sorry, I didn't understand that."
prompts = chain([prompt_msg], repeat('\n'.join([bad_input_msg, prompt_msg])))
replies = map(input, prompts)
valid_response = next(filter(str.isdigit, replies))
print(valid_response)
Enter a number: a
Sorry, I didn't understand that.
Enter a number: b
Sorry, I didn't understand that.
Enter a number: 1
1
prompts = chain(["Enter a number: "], repeat("Not a number! Try again: "))
This combination of itertools.chain
and itertools.repeat
will create an iterator
which will yield strings "Enter a number: "
once, and "Not a number! Try again: "
an infinite number of times:
for prompt in prompts:
print(prompt)
Enter a number:
Not a number! Try again:
Not a number! Try again:
Not a number! Try again:
# ... and so on
replies = map(input, prompts)
- here map
will apply all the prompts
strings from the previous step to the input
function. E.g.:
for reply in replies:
print(reply)
Enter a number: a
a
Not a number! Try again: 1
1
Not a number! Try again: it doesn't care now
it doesn't care now
# and so on...
filter
and str.isdigit
to filter out those strings that contain only digits:
only_digits = filter(str.isdigit, replies)
for reply in only_digits:
print(reply)
Enter a number: a
Not a number! Try again: 1
1
Not a number! Try again: 2
2
Not a number! Try again: b
Not a number! Try again: # and so on...
And to get only the first digits-only string we use next
.String methods: Of course you can use other string methods like str.isalpha
to get only alphabetic strings, or str.isupper
to get only uppercase. See docs for the full list.
Membership testing:
There are several different ways to perform it. One of them is by using __contains__
method:
from itertools import chain, repeat
fruits = {'apple', 'orange', 'peach'}
prompts = chain(["Enter a fruit: "], repeat("I don't know this one! Try again: "))
replies = map(input, prompts)
valid_response = next(filter(fruits.__contains__, replies))
print(valid_response)
Enter a fruit: 1
I don't know this one! Try again: foo
I don't know this one! Try again: apple
apple
Numbers comparison:
There are useful comparison methods which we can use here. For example, for __lt__
(<
):
from itertools import chain, repeat
prompts = chain(["Enter a positive number:"], repeat("I need a positive number! Try again:"))
replies = map(input, prompts)
numeric_strings = filter(str.isnumeric, replies)
numbers = map(float, numeric_strings)
is_positive = (0.).__lt__
valid_response = next(filter(is_positive, numbers))
print(valid_response)
Enter a positive number: a
I need a positive number! Try again: -5
I need a positive number! Try again: 0
I need a positive number! Try again: 5
5.0
Or, if you don't like using dunder methods (dunder = double-underscore), you can always define your own function, or use the ones from the operator
module.
Path existance:
Here one can use pathlib
library and its Path.exists
method:
from itertools import chain, repeat
from pathlib import Path
prompts = chain(["Enter a path: "], repeat("This path doesn't exist! Try again: "))
replies = map(input, prompts)
paths = map(Path, replies)
valid_response = next(filter(Path.exists, paths))
print(valid_response)
Enter a path: a b c
This path doesn't exist! Try again: 1
This path doesn't exist! Try again: existing_file.txt
existing_file.txt
If you don't want to torture a user by asking him something an infinite number of times, you can specify a limit in a call of itertools.repeat
. This can be combined with providing a default value to the next
function:
from itertools import chain, repeat
prompts = chain(["Enter a number:"], repeat("Not a number! Try again:", 2))
replies = map(input, prompts)
valid_response = next(filter(str.isdigit, replies), None)
print("You've failed miserably!" if valid_response is None else 'Well done!')
Enter a number: a
Not a number! Try again: b
Not a number! Try again: c
You've failed miserably!
Sometimes we don't want to reject an input if the user accidentally supplied it IN CAPS or with a space in the beginning or an end of the string. To take these simple mistakes into account we can preprocess the input data by applying str.lower
and str.strip
methods. For example, for the case of membership testing the code will look like this:
from itertools import chain, repeat
fruits = {'apple', 'orange', 'peach'}
prompts = chain(["Enter a fruit: "], repeat("I don't know this one! Try again: "))
replies = map(input, prompts)
lowercased_replies = map(str.lower, replies)
stripped_replies = map(str.strip, lowercased_replies)
valid_response = next(filter(fruits.__contains__, stripped_replies))
print(valid_response)
Enter a fruit: duck
I don't know this one! Try again: Orange
orange
In the case when you have many functions to use for preprocessing, it might be easier to use a function performing a function composition. For example, using the one from here:
from itertools import chain, repeat
from lz.functional import compose
fruits = {'apple', 'orange', 'peach'}
prompts = chain(["Enter a fruit: "], repeat("I don't know this one! Try again: "))
replies = map(input, prompts)
process = compose(str.strip, str.lower) # you can add more functions here
processed_replies = map(process, replies)
valid_response = next(filter(fruits.__contains__, processed_replies))
print(valid_response)
Enter a fruit: potato
I don't know this one! Try again: PEACH
peach
For a simple case, for example, when the program asks for age between 1 and 120, one can just add another filter
:
from itertools import chain, repeat
prompt_msg = "Enter your age (1-120): "
bad_input_msg = "Wrong input."
prompts = chain([prompt_msg], repeat('\n'.join([bad_input_msg, prompt_msg])))
replies = map(input, prompts)
numeric_replies = filter(str.isdigit, replies)
ages = map(int, numeric_replies)
positive_ages = filter((0).__lt__, ages)
not_too_big_ages = filter((120).__ge__, positive_ages)
valid_response = next(not_too_big_ages)
print(valid_response)
But in the case when there are many rules, it's better to implement a function performing a logical conjunction. In the following example I will use a ready one from here:
from functools import partial
from itertools import chain, repeat
from lz.logical import conjoin
def is_one_letter(string: str) -> bool:
return len(string) == 1
rules = [str.isalpha, str.isupper, is_one_letter, 'C'.__le__, 'P'.__ge__]
prompt_msg = "Enter a letter (C-P): "
bad_input_msg = "Wrong input."
prompts = chain([prompt_msg], repeat('\n'.join([bad_input_msg, prompt_msg])))
replies = map(input, prompts)
valid_response = next(filter(conjoin(*rules), replies))
print(valid_response)
Enter a letter (C-P): 5
Wrong input.
Enter a letter (C-P): f
Wrong input.
Enter a letter (C-P): CDE
Wrong input.
Enter a letter (C-P): Q
Wrong input.
Enter a letter (C-P): N
N
Unfortunately, if someone needs a custom message for each failed case, then, I'm afraid, there is no pretty functional way. Or, at least, I couldn't find one.
In my opinion, utilizing Object.freeze
allows for a DRYer and more declarative style. My preferred pattern is:
./lib/constants.js
module.exports = Object.freeze({
MY_CONSTANT: 'some value',
ANOTHER_CONSTANT: 'another value'
});
./lib/some-module.js
var constants = require('./constants');
console.log(constants.MY_CONSTANT); // 'some value'
constants.MY_CONSTANT = 'some other value';
console.log(constants.MY_CONSTANT); // 'some value'
The following issue was fixed in v8 in Jan 2014 and is no longer relevant to most developers:
Be aware that both setting writable to false and using Object.freeze have a massive performance penalty in v8 - https://bugs.chromium.org/p/v8/issues/detail?id=1858 and http://jsperf.com/performance-frozen-object
First open Android SDK Manager and make sure the required SDK's are installed.
Now open SDK manager, copy the SDK path. Open cmd
cd C:\Users\your-username\AppData\Local\Android\Sdk\build-tools
now again Change dir to the inner folder in build-tools. check the presence or the name issues of the aapt.exe file.
Strings can be joined together using the concatenation operator ".."
this is the same for variables I think
There are two solutions posted on that page. The one with lower votes I would recommend if possible.
If you are using HTML5 then it is perfectly valid to put a div
inside of a
. As long as the div doesn't also contain some other specific elements like other link tags.
<a href="Music.html">
<div id="music" class="nav">
Music I Like
</div>
</a>
The solution you are confused about actually makes the link as big as its container div. To make it work in your example you just need to add position: relative
to your div. You also have a small syntax error which is that you have given the span a class instead of an id. You also need to put your span inside the link because that is what the user is clicking on. I don't think you need the z-index
at all from that example.
div { position: relative; }
.hyperspan {
position:absolute;
width:100%;
height:100%;
left:0;
top:0;
}
<div id="music" class="nav">Music I Like
<a href="http://www.google.com">
<span class="hyperspan"></span>
</a>
</div>
When you give absolute
positioning to an element it bases its location and size after the first parent it finds that is relatively positioned. If none, then it uses the document. By adding relative
to the parent div you tell the span to only be as big as that.
You can do that with list comprehension too:
A=[[x*100, x][x % 2 != 0] for x in range(1,11)]
print A
Yes, case insensitivity can be enabled and disabled at will in Java regex.
It looks like you want something like this:
System.out.println(
"Have a meRry MErrY Christmas ho Ho hO"
.replaceAll("(?i)\\b(\\w+)(\\s+\\1)+\\b", "$1")
);
// Have a meRry Christmas ho
Note that the embedded Pattern.CASE_INSENSITIVE
flag is (?i)
not \?i
. Note also that one superfluous \b
has been removed from the pattern.
The (?i)
is placed at the beginning of the pattern to enable case-insensitivity. In this particular case, it is not overridden later in the pattern, so in effect the whole pattern is case-insensitive.
It is worth noting that in fact you can limit case-insensitivity to only parts of the whole pattern. Thus, the question of where to put it really depends on the specification (although for this particular problem it doesn't matter since \w
is case-insensitive.
To demonstrate, here's a similar example of collapsing runs of letters like "AaAaaA"
to just "A"
.
System.out.println(
"AaAaaA eeEeeE IiiIi OoooOo uuUuUuu"
.replaceAll("(?i)\\b([A-Z])\\1+\\b", "$1")
); // A e I O u
Now suppose that we specify that the run should only be collapsed only if it starts with an uppercase letter. Then we must put the (?i)
in the appropriate place:
System.out.println(
"AaAaaA eeEeeE IiiIi OoooOo uuUuUuu"
.replaceAll("\\b([A-Z])(?i)\\1+\\b", "$1")
); // A eeEeeE I O uuUuUuu
More generally, you can enable and disable any flag within the pattern as you wish.
java.util.regex.Pattern
/regex/i
(Pattern.CASE_INSENSITIVE
in Java), you can do /(?i)regex/
/first(?i)second(?-i)third/
/first(?i:second)third/
\b
between a \w
and a \s
)@Zugwait's answer is correct. req.param()
is deprecated. You should use req.params
, req.query
or req.body
.
But just to make it clearer:
req.params
will be populated with only the route values. That is, if you have a route like /users/:id
, you can access the id
either in req.params.id
or req.params['id']
.
req.query
and req.body
will be populated with all params, regardless of whether or not they are in the route. Of course, parameters in the query string will be available in req.query
and parameters in a post body will be available in req.body
.
So, answering your questions, as color
is not in the route, you should be able to get it using req.query.color
or req.query['color']
.
In order to remove all subviews from superviews:
NSArray *oSubView = [self subviews];
for(int iCount = 0; iCount < [oSubView count]; iCount++)
{
id object = [oSubView objectAtIndex:iCount];
[object removeFromSuperview];
iCount--;
}
Set elevation: 3
and you should see the shadow in bottom of component without a 3rd party lib. At least in RN 0.57.4
import java.sql.Timestamp;
import java.text.SimpleDateFormat;
import java.util.Date;
public class DateTest {
public static void main(String[] args) {
Timestamp timestamp = new Timestamp(System.currentTimeMillis());
Date date = new Date(timestamp.getTime());
// S is the millisecond
SimpleDateFormat simpleDateFormat = new SimpleDateFormat("MM/dd/yyyy' 'HH:mm:ss:S");
System.out.println(simpleDateFormat.format(timestamp));
System.out.println(simpleDateFormat.format(date));
}
}
Replace implementation
with compile
.
compile
was recently deprecated and replaced by implementation
or api
Simple rules of bidirectional relationships:
1.For many-to-one bidirectional relationships, the many side is always the owning side of the relationship. Example: 1 Room has many Person (a Person belongs one Room only) -> owning side is Person
2.For one-to-one bidirectional relationships, the owning side corresponds to the side that contains the corresponding foreign key.
3.For many-to-many bidirectional relationships, either side may be the owning side.
Hope can help you.
asort()
- Maintains key association: yes.
sort()
- Maintains key association: no.
Use below XML configuration to configure logs into two or more files:
<log4net>
<appender name="RollingLogFileAppender" type="log4net.Appender.RollingFileAppender">
<file value="logs\log.txt" />
<appendToFile value="true" />
<rollingStyle value="Size" />
<maxSizeRollBackups value="10" />
<maximumFileSize value="10MB" />
<staticLogFileName value="true" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date [%thread] %level %logger - %message%newline" />
</layout>
</appender>
<appender name="RollingLogFileAppender2" type="log4net.Appender.RollingFileAppender">
<file value="logs\log1.txt" />
<appendToFile value="true" />
<rollingStyle value="Size" />
<maxSizeRollBackups value="10" />
<maximumFileSize value="10MB" />
<staticLogFileName value="true" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date [%thread] %level %logger - %message%newline" />
</layout>
</appender>
<root>
<level value="All" />
<appender-ref ref="RollingLogFileAppender" />
</root>
<logger additivity="false" name="RollingLogFileAppender2">
<level value="All"/>
<appender-ref ref="RollingLogFileAppender2" />
</logger>
</log4net>
Above XML configuration logs into two different files. To get specific instance of logger programmatically:
ILog logger = log4net.LogManager.GetLogger ("RollingLogFileAppender2");
You can append two or more appender elements inside log4net root element for logging into multiples files.
More info about above XML configuration structure or which appender is best for your application, read details from below links:
https://logging.apache.org/log4net/release/manual/configuration.html https://logging.apache.org/log4net/release/sdk/index.html
Unfortunately if you're looking to apply UIPopoverController
in iOS9, you'll get a deprecated class warning. Instead you need to set your desired view's UIModalPresentationPopover
property to achieve the same result.
Popover
In a horizontally regular environment, a presentation style where the content is displayed in a popover view. The background content is dimmed and taps outside the popover cause the popover to be dismissed. If you do not want taps to dismiss the popover, you can assign one or more views to the passthroughViews property of the associated UIPopoverPresentationController object, which you can get from the popoverPresentationController property.
In a horizontally compact environment, this option behaves the same as UIModalPresentationFullScreen.
Available in iOS 8.0 and later.
Reference: https://developer.apple.com/documentation/uikit/uiviewcontroller/1621355-modalpresentationstyle
The main difference between the two is where it is stored and how it is accessed.
$.fn.attr
stores the information directly on the element in attributes which are publicly visible upon inspection, and also which are available from the element's native API.
$.fn.data
stores the information in a ridiculously obscure place. It is located in a closed over local variable called data_user
which is an instance of a locally defined function Data. This variable is not accessible from outside of jQuery directly.
Data set with attr()
$(element).attr('data-name')
element.getAttribute('data-name')
,data-name
also accessible from $(element).data(name)
and element.dataset['name']
and element.dataset.name
Data set with .data()
.data(name)
.attr()
or anywhere elseThis is probably too late, but I had a similar problem with dates that I wanted entered into cells from a text variable. Inevitably, it converted my variable text value to a date. What I finally had to do was concatentate a ' to the string variable and then put it in the cell like this:
prvt_rng_WrkSht.Cells(prvt_rng_WrkSht.Rows.Count, cnst_int_Col_Start_Date).Formula = "'" & _
param_cls_shift.Start_Date (string property of my class)
To gzip up your font files as well!
add "x-font/otf x-font/ttf x-font/eot"
as in:
AddOutputFilterByType DEFLATE text/html text/plain text/xml application/xml x-font/otf x-font/ttf x-font/eot
You can also login to the redis-cli and use the MONITOR command to see what queries are happening against Redis.
If you are using "table as", then specify it to delete.
In the example i delete all table_1 rows which are do not exists in table_2.
DELETE t1 FROM `table_1` t1 LEFT JOIN `table_2` t2 ON t1.`id` = t2.`id` WHERE t2.`id` IS NULL
While ireport does not officially support java8, there is a fairly simple way to make ireport (tested with ireport 5.1) work with Java 8. The problem is actually in netbeans. There is a very simple patch, assuming you don't care about the improved security in Java 8:
I didn't even use the exact netbeans source used by ireport. I just downloaded the latest WeakListenerImpl.java in full from the above repository, and compiled it in the ireport directory with platform9/lib/org-openide-util.jar in the compiler classpath
cd blah/blah/iReport-5.1.0
wget http://hg.netbeans.org/jet-main/raw-file/3238e03c676f/openide.util/src/org/openide/util/WeakListenerImpl.java
javac -d . -cp platform9/lib/org-openide-util.jar WeakListenerImpl.java
zip -r platform9/lib/org-openide-util.jar org
I am avoiding running eclipse just to edit jasper reports as long as I can. The netbeans based ireport is so much lighter weight. Running Eclipse is like using emacs.
One requirement for remote debugging is that the windows account used to run SSMS be part of the sysadmin role. See this MSDN link: http://msdn.microsoft.com/en-us/library/cc646024%28v=sql.105%29.aspx
Pieter Hintjens -- one of the founders of the ØMQ-project -- says, using ØMQ and avoiding synchronization primitives like locks, mutexes, events etc., is the sanest and securest way to write multi-threaded programs:
http://zguide.zeromq.org/py:all#Multithreading-with-ZeroMQ
This includes telling a child thread, that it should cancel its work. This would be done by equipping the thread with a ØMQ-socket and polling on that socket for a message saying that it should cancel.
The link also provides an example on multi-threaded python code with ØMQ.
You can use ternary operator since version 1.1.5 and above like demonstrated in this little plunker (example in 1.1.5):
For history reasons (maybe plnkr.co get down for some reason in the future) here is the main code of my example:
{{true?true:false}}
either (plain js)
this.checked = false;
or (jQuery)
$(this).prop('checked', false);
// Note that the pre-jQuery 1.6 idiom was
// $(this).attr('checked', false);
See jQuery prop() help page for an explanation on the difference between attr() and prop() and why prop() is now preferable.
prop() was introduced with jQuery 1.6 in May 2011.
Take a look at CoffeeScript: http://coffeescript.org
It supports multi-line strings, interpolation, array comprehensions and lots of other nice stuff.
In the latest version (v2.19 for Windows when I'm writing), if you choose the option "Use git in Windows command prompt" (or sth similar, please read the options carefully when you install git), you should be able to use git commands in windows command prompt or windows powershell without any additional setting. Just remember to restart the command line tool after you install git.
/* Microsoft Edge Browser 12-18 (All versions before Chromium) */
This one should work:
@supports (-ms-ime-align:auto) {
.selector {
property: value;
}
}
For more see: Browser Strangeness
I may have a simple way to do this without having to do painful recursion and not knowing all the finer details of the object in question. Using jQuery, simply convert your object to JSON using the jQuery $.toJSON(myObjectArray)
, then take your JSON string and evaluate it back to an object. BAM! Done, and done! Problem solved. :)
var oldObjArray = [{ Something: 'blah', Cool: true }];
var newObjArray = eval($.toJSON(oldObjArray));
I didn't understand this pattern until I came across with uncle bob article and read comments. Consider the following code:
public class Employee
{
}
public class SalariedEmployee : Employee
{
}
public class HourlyEmployee : Employee
{
}
public class QtdHoursAndPayReport
{
public void PrintReport()
{
var employees = new List<Employee>
{
new SalariedEmployee(),
new HourlyEmployee()
};
foreach (Employee e in employees)
{
if (e is HourlyEmployee he)
PrintReportLine(he);
if (e is SalariedEmployee se)
PrintReportLine(se);
}
}
public void PrintReportLine(HourlyEmployee he)
{
System.Diagnostics.Debug.WriteLine("hours");
}
public void PrintReportLine(SalariedEmployee se)
{
System.Diagnostics.Debug.WriteLine("fix");
}
}
class Program
{
static void Main(string[] args)
{
new QtdHoursAndPayReport().PrintReport();
}
}
While it may look good since it confirms to Single Responsibility it violates Open/Closed principle. Each time you have new Employee type you will have to add if with type check. And if you won't you'll never know that at compile time.
With visitor pattern you can make your code cleaner since it does not violate open/closed principle and does not violate Single responsibility. And if you forget to implement visit it won't compile:
public abstract class Employee
{
public abstract void Accept(EmployeeVisitor v);
}
public class SalariedEmployee : Employee
{
public override void Accept(EmployeeVisitor v)
{
v.Visit(this);
}
}
public class HourlyEmployee:Employee
{
public override void Accept(EmployeeVisitor v)
{
v.Visit(this);
}
}
public interface EmployeeVisitor
{
void Visit(HourlyEmployee he);
void Visit(SalariedEmployee se);
}
public class QtdHoursAndPayReport : EmployeeVisitor
{
public void Visit(HourlyEmployee he)
{
System.Diagnostics.Debug.WriteLine("hourly");
// generate the line of the report.
}
public void Visit(SalariedEmployee se)
{
System.Diagnostics.Debug.WriteLine("fix");
} // do nothing
public void PrintReport()
{
var employees = new List<Employee>
{
new SalariedEmployee(),
new HourlyEmployee()
};
QtdHoursAndPayReport v = new QtdHoursAndPayReport();
foreach (var emp in employees)
{
emp.Accept(v);
}
}
}
class Program
{
public static void Main(string[] args)
{
new QtdHoursAndPayReport().PrintReport();
}
}
}
The magic is that while v.Visit(this)
looks the same it's in fact different since it call different overloads of visitor.
This is how you do it:
var e = document.getElementById('myIdName');
var value = window.getComputedStyle(e, null).getPropertyValue("zIndex");
alert('z-index: ' + value);
I used this and works for me.
function arrayBufferToBase64( buffer ) {
var binary = '';
var bytes = new Uint8Array( buffer );
var len = bytes.byteLength;
for (var i = 0; i < len; i++) {
binary += String.fromCharCode( bytes[ i ] );
}
return window.btoa( binary );
}
function base64ToArrayBuffer(base64) {
var binary_string = window.atob(base64);
var len = binary_string.length;
var bytes = new Uint8Array( len );
for (var i = 0; i < len; i++) {
bytes[i] = binary_string.charCodeAt(i);
}
return bytes.buffer;
}
The new tag for recent Chrome and Chromium browsers is :
--disable-web-security --user-data-dir=c:\my\data