ssize_t
is used for functions whose return value could either be a valid size, or a negative value to indicate an error.
It is guaranteed to be able to store values at least in the range [-1, SSIZE_MAX]
(SSIZE_MAX
is system-dependent).
So you should use size_t
whenever you mean to return a size in bytes, and ssize_t
whenever you would return either a size in bytes or a (negative) error value.
See: http://pubs.opengroup.org/onlinepubs/007908775/xsh/systypes.h.html
The question is somewhat ambiguous -- I'm not sure what you mean by "view". If you are trying to query the type of a native Python object, @atzz's answer will steer you in the right direction.
However, if you are trying to generate Python objects that have the semantics of primitive C-types, (such as uint32_t
, int16_t
), use the struct
module. You can determine the number of bits in a given C-type primitive thusly:
>>> struct.calcsize('c') # char
1
>>> struct.calcsize('h') # short
2
>>> struct.calcsize('i') # int
4
>>> struct.calcsize('l') # long
4
This is also reflected in the array
module, which can make arrays of these lower-level types:
>>> array.array('c').itemsize # char
1
The maximum integer supported (Python 2's int
) is given by sys.maxint.
>>> import sys, math
>>> math.ceil(math.log(sys.maxint, 2)) + 1 # Signedness
32.0
There is also sys.getsizeof, which returns the actual size of the Python object in residual memory:
>>> a = 5
>>> sys.getsizeof(a) # Residual memory.
12
For float data and precision data, use sys.float_info:
>>> sys.float_info
sys.floatinfo(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=2.2204460492503131e-16, radix=2, rounds=1)
The difference is that the uint
and ulong
are unsigned data types, meaning the range is different: They do not accept negative values:
int range: -2,147,483,648 to 2,147,483,647
uint range: 0 to 4,294,967,295
long range: –9,223,372,036,854,775,808 to 9,223,372,036,854,775,807
ulong range: 0 to 18,446,744,073,709,551,615
I would use general algorithms like for_each
to avoid searching for the right type of iterator and lambda expression to avoid extra named functions/objects.
The short "pretty" example for your particular case (assuming polygon is a vector of integers):
for_each(polygon.begin(), polygon.end(), [&sum](int i){ sum += i; });
tested on: http://ideone.com/i6Ethd
Dont' forget to include: algorithm and, of course, vector :)
Microsoft has actually also a nice example on this:
source: http://msdn.microsoft.com/en-us/library/dd293608.aspx
#include <algorithm>
#include <iostream>
#include <vector>
using namespace std;
int main()
{
// Create a vector object that contains 10 elements.
vector<int> v;
for (int i = 1; i < 10; ++i) {
v.push_back(i);
}
// Count the number of even numbers in the vector by
// using the for_each function and a lambda.
int evenCount = 0;
for_each(v.begin(), v.end(), [&evenCount] (int n) {
cout << n;
if (n % 2 == 0) {
cout << " is even " << endl;
++evenCount;
} else {
cout << " is odd " << endl;
}
});
// Print the count of even numbers to the console.
cout << "There are " << evenCount
<< " even numbers in the vector." << endl;
}
Andy Buchanan, as far as sticking to C++ goes, I liked yours, but I have a few mods:
template <typename ElemT>
struct HexTo {
ElemT value;
operator ElemT() const {return value;}
friend std::istream& operator>>(std::istream& in, HexTo& out) {
in >> std::hex >> out.value;
return in;
}
};
Used like
uint32_t value = boost::lexical_cast<HexTo<uint32_t> >("0x2a");
That way you don't need one impl per int type.
just use abs for converting unsigned to signed in python
a=-12
b=abs(a)
print(b)
Output: 12
Unsigned can hold a larger positive value and no negative value.
Yes.
Unsigned uses the leading bit as a part of the value, while the signed version uses the left-most-bit to identify if the number is positive or negative.
There are different ways of representing signed integers. The easiest to visualise is to use the leftmost bit as a flag (sign and magnitude), but more common is two's complement. Both are in use in most modern microprocessors — floating point uses sign and magnitude, while integer arithmetic uses two's complement.
Signed integers can hold both positive and negative numbers.
Yes.
The exact code will vary for each of the columns you want to do, but it's likely you'll want to use the map
and apply
functions. In some cases you can just compute using the existing columns directly, since the columns are Pandas Series objects, which also work as Numpy arrays, which automatically work element-wise for usual mathematical operations.
>>> d
A B C
0 11 13 5
1 6 7 4
2 8 3 6
3 4 8 7
4 0 1 7
>>> (d.A + d.B) / d.C
0 4.800000
1 3.250000
2 1.833333
3 1.714286
4 0.142857
>>> d.A > d.C
0 True
1 True
2 True
3 False
4 False
If you need to use operations like max and min within a row, you can use apply
with axis=1
to apply any function you like to each row. Here's an example that computes min(A, B)-C
, which seems to be like your "lower wick":
>>> d.apply(lambda row: min([row['A'], row['B']])-row['C'], axis=1)
0 6
1 2
2 -3
3 -3
4 -7
Hopefully that gives you some idea of how to proceed.
Edit: to compare rows against neighboring rows, the simplest approach is to slice the columns you want to compare, leaving off the beginning/end, and then compare the resulting slices. For instance, this will tell you for which rows the element in column A is less than the next row's element in column C:
d['A'][:-1] < d['C'][1:]
and this does it the other way, telling you which rows have A less than the preceding row's C:
d['A'][1:] < d['C'][:-1]
Doing ['A"][:-1]
slices off the last element of column A, and doing ['C'][1:]
slices off the first element of column C, so when you line these two up and compare them, you're comparing each element in A with the C from the following row.
Solution native Javascript :
document.getElementById("theSelectId").insertBefore(new Option('', ''), document.getElementById("theSelectId").firstChild);
example : http://codepen.io/anon/pen/GprybL
The answer is opinion. I worked in a lot of projects and being testmanager and issuemanager and all different roles and the descriptions in various books differ so here is my variation:
functional-testing: take the business requirements and test all of it good and thorougly from a functional viewpoint.
acceptance-testing: the "paying" customer does the testing he likes to do so that he can accept the product delivered. It depends on the customer but usually the tests are not as thorough as the functional-testing especially if it is an in-house project because the stakeholders review and trust the test results done in earlier test phases.
As I said this is my viewpoint and experience. The functional-testing is systematic and the acceptance-testing is rather the business department testing the thing.
TL;DR
Use the nargs
option or the 'append'
setting of the action
option (depending on how you want the user interface to behave).
nargs
parser.add_argument('-l','--list', nargs='+', help='<Required> Set flag', required=True)
# Use like:
# python arg.py -l 1234 2345 3456 4567
nargs='+'
takes 1 or more arguments, nargs='*'
takes zero or more.
append
parser.add_argument('-l','--list', action='append', help='<Required> Set flag', required=True)
# Use like:
# python arg.py -l 1234 -l 2345 -l 3456 -l 4567
With append
you provide the option multiple times to build up the list.
Don't use type=list
!!! - There is probably no situation where you would want to use type=list
with argparse
. Ever.
Let's take a look in more detail at some of the different ways one might try to do this, and the end result.
import argparse
parser = argparse.ArgumentParser()
# By default it will fail with multiple arguments.
parser.add_argument('--default')
# Telling the type to be a list will also fail for multiple arguments,
# but give incorrect results for a single argument.
parser.add_argument('--list-type', type=list)
# This will allow you to provide multiple arguments, but you will get
# a list of lists which is not desired.
parser.add_argument('--list-type-nargs', type=list, nargs='+')
# This is the correct way to handle accepting multiple arguments.
# '+' == 1 or more.
# '*' == 0 or more.
# '?' == 0 or 1.
# An int is an explicit number of arguments to accept.
parser.add_argument('--nargs', nargs='+')
# To make the input integers
parser.add_argument('--nargs-int-type', nargs='+', type=int)
# An alternate way to accept multiple inputs, but you must
# provide the flag once per input. Of course, you can use
# type=int here if you want.
parser.add_argument('--append-action', action='append')
# To show the results of the given option to screen.
for _, value in parser.parse_args()._get_kwargs():
if value is not None:
print(value)
Here is the output you can expect:
$ python arg.py --default 1234 2345 3456 4567
...
arg.py: error: unrecognized arguments: 2345 3456 4567
$ python arg.py --list-type 1234 2345 3456 4567
...
arg.py: error: unrecognized arguments: 2345 3456 4567
$ # Quotes won't help here...
$ python arg.py --list-type "1234 2345 3456 4567"
['1', '2', '3', '4', ' ', '2', '3', '4', '5', ' ', '3', '4', '5', '6', ' ', '4', '5', '6', '7']
$ python arg.py --list-type-nargs 1234 2345 3456 4567
[['1', '2', '3', '4'], ['2', '3', '4', '5'], ['3', '4', '5', '6'], ['4', '5', '6', '7']]
$ python arg.py --nargs 1234 2345 3456 4567
['1234', '2345', '3456', '4567']
$ python arg.py --nargs-int-type 1234 2345 3456 4567
[1234, 2345, 3456, 4567]
$ # Negative numbers are handled perfectly fine out of the box.
$ python arg.py --nargs-int-type -1234 2345 -3456 4567
[-1234, 2345, -3456, 4567]
$ python arg.py --append-action 1234 --append-action 2345 --append-action 3456 --append-action 4567
['1234', '2345', '3456', '4567']
Takeaways:
nargs
or action='append'
nargs
can be more straightforward from a user perspective, but it can be unintuitive if there are positional arguments because argparse
can't tell what should be a positional argument and what belongs to the nargs
; if you have positional arguments then action='append'
may end up being a better choice.nargs
is given '*'
, '+'
, or '?'
. If you provide an integer number (such as 4
) then there will be no problem mixing options with nargs
and positional arguments because argparse
will know exactly how many values to expect for the option.type=list
, as it will return a list of lists
argparse
uses the value of type
to coerce each individual given argument you your chosen type
, not the aggregate of all arguments.type=int
(or whatever) to get a list of ints (or whatever)1: I don't mean in general.. I mean using quotes to pass a list to argparse
is not what you want.
Both join()
and concat()
way could solve the problem. However, there is one warning I have to mention: Reset the index before you join()
or concat()
if you trying to deal with some data frame by selecting some rows from another DataFrame.
One example below shows some interesting behavior of join and concat:
dat1 = pd.DataFrame({'dat1': range(4)})
dat2 = pd.DataFrame({'dat2': range(4,8)})
dat1.index = [1,3,5,7]
dat2.index = [2,4,6,8]
# way1 join 2 DataFrames
print(dat1.join(dat2))
# output
dat1 dat2
1 0 NaN
3 1 NaN
5 2 NaN
7 3 NaN
# way2 concat 2 DataFrames
print(pd.concat([dat1,dat2],axis=1))
#output
dat1 dat2
1 0.0 NaN
2 NaN 4.0
3 1.0 NaN
4 NaN 5.0
5 2.0 NaN
6 NaN 6.0
7 3.0 NaN
8 NaN 7.0
#reset index
dat1 = dat1.reset_index(drop=True)
dat2 = dat2.reset_index(drop=True)
#both 2 ways to get the same result
print(dat1.join(dat2))
dat1 dat2
0 0 4
1 1 5
2 2 6
3 3 7
print(pd.concat([dat1,dat2],axis=1))
dat1 dat2
0 0 4
1 1 5
2 2 6
3 3 7
There are three states of button
button
button:hover
button:active
Normal:
.button
{
//your css
}
Active
.button:active
{
//your css
}
Hover
.button:hover
{
//your css
}
SNIPPET:
Use :active
to style the active state of button.
button:active{_x000D_
background-color:red;_x000D_
}
_x000D_
<button>Click Me</button>
_x000D_
A little extension to the above answers. The trailing >
directs the input into the file, overwriting existing content. However, one particularly convenient use is the double arrow >>
that appends, adding your new content to the end of the file, as in:
cat <<EOF >> /etc/fstab
data_server:/var/sharedServer/authority/cert /var/sharedFolder/sometin/authority/cert nfs
data_server:/var/sharedServer/cert /var/sharedFolder/sometin/vsdc/cert nfs
EOF
This extends your fstab
without you having to worry about accidentally modifying any of its contents.
You can join your array using the following:
string.Join(",", Client);
Then you can output anyway you want. You can change the comma to what ever you want, a space, a pipe, or whatever.
Turn on the server log:
log_statement = all
This will log every call to the database server.
I would not use log_statement = all
on a production server. Produces huge log files.
The manual about logging-parameters:
log_statement
(enum
)Controls which SQL statements are logged. Valid values are
none
(off),ddl
,mod
, andall
(all statements). [...]
Resetting the log_statement
parameter requires a server reload (SIGHUP
). A restart is not necessary. Read the manual on how to set parameters.
Don't confuse the server log with pgAdmin's log. Two different things!
You can also look at the server log files in pgAdmin, if you have access to the files (may not be the case with a remote server) and set it up correctly. In pgadmin III, have a look at: Tools -> Server status
. That option was removed in pgadmin4.
I prefer to read the server log files with vim
(or any editor / reader of your choice).
This answer should be enough to get you set up to follow this tutorial on Building a functional search component with MongoDB, Elasticsearch, and AngularJS.
If you're looking to use faceted search with data from an API then Matthiasn's BirdWatch Repo is something you might want to look at.
So here's how you can setup a single node Elasticsearch "cluster" to index MongoDB for use in a NodeJS, Express app on a fresh EC2 Ubuntu 14.04 instance.
Make sure everything is up to date.
sudo apt-get update
Install NodeJS.
sudo apt-get install nodejs
sudo apt-get install npm
Install MongoDB - These steps are straight from MongoDB docs. Choose whatever version you're comfortable with. I'm sticking with v2.4.9 because it seems to be the most recent version MongoDB-River supports without issues.
Import the MongoDB public GPG Key.
sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv 7F0CEB10
Update your sources list.
echo 'deb http://downloads-distro.mongodb.org/repo/ubuntu-upstart dist 10gen' | sudo tee /etc/apt/sources.list.d/mongodb.list
Get the 10gen package.
sudo apt-get install mongodb-10gen
Then pick your version if you don't want the most recent. If you are setting your environment up on a windows 7 or 8 machine stay away from v2.6 until they work some bugs out with running it as a service.
apt-get install mongodb-10gen=2.4.9
Prevent the version of your MongoDB installation being bumped up when you update.
echo "mongodb-10gen hold" | sudo dpkg --set-selections
Start the MongoDB service.
sudo service mongodb start
Your database files default to /var/lib/mongo and your log files to /var/log/mongo.
Create a database through the mongo shell and push some dummy data into it.
mongo YOUR_DATABASE_NAME
db.createCollection(YOUR_COLLECTION_NAME)
for (var i = 1; i <= 25; i++) db.YOUR_COLLECTION_NAME.insert( { x : i } )
Now to Convert the standalone MongoDB into a Replica Set.
First Shutdown the process.
mongo YOUR_DATABASE_NAME
use admin
db.shutdownServer()
Now we're running MongoDB as a service, so we don't pass in the "--replSet rs0" option in the command line argument when we restart the mongod process. Instead, we put it in the mongod.conf file.
vi /etc/mongod.conf
Add these lines, subbing for your db and log paths.
replSet=rs0
dbpath=YOUR_PATH_TO_DATA/DB
logpath=YOUR_PATH_TO_LOG/MONGO.LOG
Now open up the mongo shell again to initialize the replica set.
mongo DATABASE_NAME
config = { "_id" : "rs0", "members" : [ { "_id" : 0, "host" : "127.0.0.1:27017" } ] }
rs.initiate(config)
rs.slaveOk() // allows read operations to run on secondary members.
Now install Elasticsearch. I'm just following this helpful Gist.
Make sure Java is installed.
sudo apt-get install openjdk-7-jre-headless -y
Stick with v1.1.x for now until the Mongo-River plugin bug gets fixed in v1.2.1.
wget https://download.elasticsearch.org/elasticsearch/elasticsearch/elasticsearch-1.1.1.deb
sudo dpkg -i elasticsearch-1.1.1.deb
curl -L http://github.com/elasticsearch/elasticsearch-servicewrapper/tarball/master | tar -xz
sudo mv *servicewrapper*/service /usr/local/share/elasticsearch/bin/
sudo rm -Rf *servicewrapper*
sudo /usr/local/share/elasticsearch/bin/service/elasticsearch install
sudo ln -s `readlink -f /usr/local/share/elasticsearch/bin/service/elasticsearch` /usr/local/bin/rcelasticsearch
Make sure /etc/elasticsearch/elasticsearch.yml has the following config options enabled if you're only developing on a single node for now:
cluster.name: "MY_CLUSTER_NAME"
node.local: true
Start the Elasticsearch service.
sudo service elasticsearch start
Verify it's working.
curl http://localhost:9200
If you see something like this then you're good.
{
"status" : 200,
"name" : "Chi Demon",
"version" : {
"number" : "1.1.2",
"build_hash" : "e511f7b28b77c4d99175905fac65bffbf4c80cf7",
"build_timestamp" : "2014-05-22T12:27:39Z",
"build_snapshot" : false,
"lucene_version" : "4.7"
},
"tagline" : "You Know, for Search"
}
Now install the Elasticsearch plugins so it can play with MongoDB.
bin/plugin --install com.github.richardwilly98.elasticsearch/elasticsearch-river-mongodb/1.6.0
bin/plugin --install elasticsearch/elasticsearch-mapper-attachments/1.6.0
These two plugins aren't necessary but they're good for testing queries and visualizing changes to your indexes.
bin/plugin --install mobz/elasticsearch-head
bin/plugin --install lukas-vlcek/bigdesk
Restart Elasticsearch.
sudo service elasticsearch restart
Finally index a collection from MongoDB.
curl -XPUT localhost:9200/_river/DATABASE_NAME/_meta -d '{
"type": "mongodb",
"mongodb": {
"servers": [
{ "host": "127.0.0.1", "port": 27017 }
],
"db": "DATABASE_NAME",
"collection": "ACTUAL_COLLECTION_NAME",
"options": { "secondary_read_preference": true },
"gridfs": false
},
"index": {
"name": "ARBITRARY INDEX NAME",
"type": "ARBITRARY TYPE NAME"
}
}'
Check that your index is in Elasticsearch
curl -XGET http://localhost:9200/_aliases
Check your cluster health.
curl -XGET 'http://localhost:9200/_cluster/health?pretty=true'
It's probably yellow with some unassigned shards. We have to tell Elasticsearch what we want to work with.
curl -XPUT 'localhost:9200/_settings' -d '{ "index" : { "number_of_replicas" : 0 } }'
Check cluster health again. It should be green now.
curl -XGET 'http://localhost:9200/_cluster/health?pretty=true'
Go play.
It's called a Favicon, have a read.
<link rel="shortcut icon" href="http://www.example.com/myicon.ico"/>
You can use this neat tool to generate cross-browser compatible Favicons.
byte[] b = IOUtils.toByteArray((new URL( )).openStream()); //idiom
Note however, that stream is not closed in the above example.
if you want a (76-character) chunk (using commons codec)...
byte[] b = Base64.encodeBase64(IOUtils.toByteArray((new URL( )).openStream()), true);
Search based solutions (*, /...) move cursor, which may be unfortunate.
An alternative is to use enhanced mark.vim plugin, then complete your .vimrc
to let double-click trigger highlighting (I don't know how a keyboard selection may trigger a command) :
"Use Mark plugin to highlight selected word
map <2-leftmouse> \m
It allows multiple highlightings, persistence, etc.
To remove highlighting, either :
:Mark
(switch off until next selection):MarkClear
With ctypes, you can achieve the same thing with
>>> import ctypes
>>> a = (1,2,3)
>>> ctypes.addressof(a)
3077760748L
Documentation:
addressof(C instance) -> integer
Return the address of the C instance internal buffer
Note that in CPython, currently id(a) == ctypes.addressof(a)
, but ctypes.addressof
should return the real address for each Python implementation, if
Edit: added information about interpreter-independence of ctypes
The OP did not ask for cleanup for all remotes, rather for all branches of default remote.
So git fetch --prune
is what should be used.
Setting git config remote.origin.prune true
makes --prune
automatic. In that case just git fetch
will also prune stale remote branches from the local copy. See also Automatic prune with Git fetch or pull.
Note that this does not clean local branches that are no longer tracking a remote branch. See How to prune local tracking branches that do not exist on remote anymore for that.
Actually, for functional component the best practice is like below, I create a sample Spinner component:
import React from 'react';
import { ActivityIndicator } from 'react-native';
import { colors } from 'helpers/theme';
import type { FC } from 'types';
interface SpinnerProps {
color?: string;
size?: 'small' | 'large' | 1 | 0;
animating?: boolean;
hidesWhenStopped?: boolean;
}
const Spinner: FC<SpinnerProps> = ({
color,
size,
animating,
hidesWhenStopped,
}) => (
<ActivityIndicator
color={color}
size={size}
animating={animating}
hidesWhenStopped={hidesWhenStopped}
/>
);
Spinner.defaultProps = {
animating: true,
color: colors.primary,
hidesWhenStopped: true,
size: 'small',
};
export default Spinner;
are you writing java code for android? in that case you should write maybe
if (90 >= angle && angle <= 180) {
updating the code to a nicer style (like some suggested) you would get:
if (angle <= 90 && angle <= 180) {
now you see that the second check is unnecessary or maybe you mixed up <
and >
signs in the first check and wanted actually to have
if (angle >= 90 && angle <= 180) {
This is a shorter and hopefully clearer answer... Yes, the endpoint is the URL where your service can be accessed by a client application. The same web service can have multiple endpoints, for example in order to make it available using different protocols.
You can 'slice' a string
very easily, just like you'd pull items from a list
:
a_string = 'This is a string'
To get the first 4 letters:
first_four_letters = a_string[:4]
>>> 'This'
Or the last 5:
last_five_letters = a_string[-5:]
>>> 'string'
So applying that logic to your problem:
the_string = '416d76b8811b0ddae2fdad8f4721ddbe|d4f656ee006e248f2f3a8a93a8aec5868788b927|12a5f648928f8e0b5376d2cc07de8e4cbf9f7ccbadb97d898373f85f0a75c47f '
first_32_chars = the_string[:32]
>>> 416d76b8811b0ddae2fdad8f4721ddbe
You can delete the browser cache by setting these headers:
<?php
header("Expires: Tue, 01 Jan 2000 00:00:00 GMT");
header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
header("Cache-Control: no-store, no-cache, must-revalidate, max-age=0");
header("Cache-Control: post-check=0, pre-check=0", false);
header("Pragma: no-cache");
?>
All the answers only check certain app is installed or not. But, as we all know an app can be installed but disabled by the user, unusable.
Therefore, this solution checks for both. i.e, installed AND enabled apps.
public static boolean isPackageInstalled(String packageName, PackageManager packageManager) {
try {
return packageManager.getApplicationInfo(packageName, 0).enabled;
}
catch (PackageManager.NameNotFoundException e) {
return false;
}
}
Call the method isPackageInstalled()
:
boolean isAppInstalled = isPackageInstalled("com.android.app" , this.getPackageManager());
Now, use the boolean variable isAppInstalled
and do whatever you want.
if(isAppInstalled ) {
/* do whatever you want */
}
has anyone noticed a trivial mistaken of the position of "2>&1" ?
2>&1 >> file
should be
>> file 2>&1
These are the necersary imports:
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
And this is a method that will allow you to read from a File by passing it the filename as a parameter like this: readFile("yourFile.txt");
String readFile(String fileName) throws IOException {
BufferedReader br = new BufferedReader(new FileReader(fileName));
try {
StringBuilder sb = new StringBuilder();
String line = br.readLine();
while (line != null) {
sb.append(line);
sb.append("\n");
line = br.readLine();
}
return sb.toString();
} finally {
br.close();
}
}
Simple Explanation:
bind() create a new function, a new reference at a function it returns to you.
In parameter after this keyword, you pass in the parameter you want to preconfigure. Actually it does not execute immediately, just prepares for execution.
You can preconfigure as many parameters as you want.
Simple Example to understand bind:
function calculate(operation) {
if (operation === 'ADD') {
alert('The Operation is Addition');
} else if (operation === 'SUBTRACT') {
alert('The Operation is Subtraction');
}
}
addBtn.addEventListener('click', calculate.bind(this, 'ADD'));
subtractBtn.addEventListener('click', calculate.bind(this, 'SUBTRACT'));
You can disable dragging simply by using draggable="false"
attribute.
http://www.w3schools.com/tags/att_global_draggable.asp
Tested this code
java.text.DateFormat formatter = new java.text.SimpleDateFormat("MM-dd-yyyy");
java.util.Date newDate = new java.util.Date();
System.out.println(formatter.format(newDate ));
http://download.oracle.com/javase/1,5.0/docs/api/java/text/SimpleDateFormat.html
Something I've noticed - in the INFORMATION_SCHEMA.COLUMNS view, CHARACTER_MAXIMUM_LENGTH gives a size of 2147483647 (2^31-1) for field types such as image and text. ntext is 2^30-1 (being double-byte unicode and all).
This size is included in the output from this query, but it is invalid for these data types in a CREATE statement (they should not have a maximum size value at all). So unless the results from this are manually corrected, the CREATE script won't work given these data types.
I imagine it's possible to fix the script to account for this, but that's beyond my SQL capabilities.
Since the string "North" might be the beginning of a street name, e.g. "Northern Boulevard", street directions are always between the street number and the street name, and separated from street number and street name.
Public Function strReplace(varValue As Variant) as Variant
Select Case varValue
Case "Avenue"
strReplace = "Ave"
Case " North "
strReplace = " N "
Case Else
strReplace = varValue
End Select
End Function
As dowski suggested, you could use WMI to get printer properties. The following code displays all properties for a given printer name. Among them you will find: PrinterStatus, Comment, Location, DriverName, PortName, etc.
using System.Management;
...
string printerName = "YourPrinterName";
string query = string.Format("SELECT * from Win32_Printer WHERE Name LIKE '%{0}'", printerName);
using (ManagementObjectSearcher searcher = new ManagementObjectSearcher(query))
using (ManagementObjectCollection coll = searcher.Get())
{
try
{
foreach (ManagementObject printer in coll)
{
foreach (PropertyData property in printer.Properties)
{
Console.WriteLine(string.Format("{0}: {1}", property.Name, property.Value));
}
}
}
catch (ManagementException ex)
{
Console.WriteLine(ex.Message);
}
}
The terms are used interchangeably. If you want to be really pedantic about it, then you could define "nested class" to refer to a static inner class, one which has no enclosing instance. In code, you might have something like this:
public class Outer {
public class Inner {}
public static class Nested {}
}
That's not really a widely accepted definition though.
If you intend to use it for realtime system, perhaps java isnt the best choice to get the timestamp. But if youre going to use if for unique key, then Jason Smith's answer will do enough. But just in case, to anticipate 2 item end up getting the same timestamp (its possible if those 2 were processed almost simultaneously), you can loop until the last timestamp not equals with the current timestamp.
String timestamp = new String();
do {
timestamp = String.valueOf(MicroTimestamp.INSTANCE.get());
item.setTimestamp(timestamp);
} while(lasttimestamp.equals(timestamp));
lasttimestamp = item.getTimestamp();
"This is my string with date in specified format $($theDate.ToString('u'))"
or
"This is my string with date in specified format $(Get-Date -format 'u')"
The sub-expression ($(...)
) can include arbitrary expressions calls.
MSDN Documents both standard and custom DateTime
format strings.
Depending on the level of IE support needed, you could also use the :before selector with the bullet style set as the content property.
li {
list-style-type: none;
font-size: small;
}
li:before {
content: '\2022';
font-size: x-large;
}
You may have to look up the HTML ASCII for the bullet style you want and use a converter for CSS Hex value.
if you want infos from the actual running batchfile, try this :
@echo off
set myNameFull=%0
echo myNameFull %myNameFull%
set myNameShort=%~n0
echo myNameShort %myNameShort%
set myNameLong=%~nx0
echo myNameLong %myNameLong%
set myPath=%~dp0
echo myPath %myPath%
set myLogfileWpath=%myPath%%myNameShort%.log
echo myLogfileWpath %myLogfileWpath%
more samples? C:> HELP CALL
%0 = parameter 0 = batchfile %1 = parameter 1 - 1st par. passed to batchfile... so you can try that stuff (e.g. "~dp") between 1st (e.g. "%") and last (e.g. "1") also for parameters
Two quick possibilities:
if(!('foo' in myObj)) { ... }
or
if(myObj['foo'] === undefined) { ... }
Notice you can use WHEN exception THEN NULL
the same way as you would use WHEN exception THEN continue
. Example:
DECLARE
extension_already_exists EXCEPTION;
PRAGMA EXCEPTION_INIT(extension_already_exists, -20007);
l_hidden_col_name varchar2(32);
BEGIN
FOR t IN ( SELECT table_name, cast(extension as varchar2(200)) ext
FROM all_stat_extensions
WHERE owner='{{ prev_schema }}'
and droppable='YES'
ORDER BY 1
)
LOOP
BEGIN
l_hidden_col_name := dbms_stats.create_extended_stats('{{ schema }}', t.table_name, t.ext);
EXCEPTION
WHEN extension_already_exists THEN NULL; -- ignore exception and go to next loop iteration
END;
END LOOP;
END;
There are a few ways you can define constants in Kotlin,
Using companion object
companion object {
const val ITEM1 = "item1"
const val ITEM2 = "item2"
}
you can use above companion object block inside any class and define all your fields inside this block itself. But there is a problem with this approach, the documentation says,
even though the members of companion objects look like static members in other languages, at runtime those are still instance members of real objects, and can, for example, implement interfaces.
When you create your constants using companion object, and see the decompiled bytecode, you'll something like below,
ClassName.Companion Companion = ClassName.Companion.$$INSTANCE;
@NotNull
String ITEM1 = "item1";
@NotNull
String ITEM2 = "item2";
public static final class Companion {
@NotNull
private static final String ITEM1 = "item1";
@NotNull
public static final String ITEM2 = "item2";
// $FF: synthetic field
static final ClassName.Companion $$INSTANCE;
private Companion() {
}
static {
ClassName.Companion var0 = new ClassName.Companion();
$$INSTANCE = var0;
}
}
From here you can easily see what the documentation said, even though the members of companion objects look like static members in other languages, at runtime those are still instance members of real objects It's doing extra work than required.
Now comes another way, where we don't need to use companion object like below,
object ApiConstants {
val ITEM1: String = "item1"
}
Again if you see the decompiled version of the byte code of above snippet, you'll find something like this,
public final class ApiConstants {
private static final String ITEM1 = "item1";
public static final ApiConstants INSTANCE;
public final String getITEM1() {
return ITEM1;
}
private ApiConstants() {
}
static {
ApiConstants var0 = new ApiConstants();
INSTANCE = var0;
CONNECT_TIMEOUT = "item1";
}
}
Now if you see the above decompiled code, it's creating get method for each variable. This get method is not required at all.
To get rid of these get methods, you should use const before val like below,
object ApiConstants {
const val ITEM1: String = "item1"
}
Now if you see the decompiled code of above snippet, you'll find it easier to read as it does the least background conversion for your code.
public final class ApiConstants {
public static final String ITEM1 = "item1";
public static final ApiConstants INSTANCE;
private ApiConstants() {
}
static {
ApiConstants var0 = new ApiConstants();
INSTANCE = var0;
}
}
So this is the best way to create constants.
Simply Add 'carousel-item' class in place of item class.
The basis of jQuery is the ability to find items in the DOM through selectors, and then checking properties on those selectors. Read up on Selectors here:
http://api.jquery.com/category/selectors/
However, it would make more sense to create event handlers for the click events for the different functionality that should occur based on what is clicked.
Let's say you're building some chairs.
The diagram that shows how to build a chair and put it together corresponds to a software class.
Let's say you build five chairs according to the pattern in that diagram. Likewise, you could construct five software objects according to the pattern in a class.
Each chair has a unique number burned into the bottom of the seat to identify each specific chair. Chair 3 is one instance of a chair pattern. Likewise, memory location 3 can contain one instance of a software pattern.
So, an instance (chair 3) is a single unique, specific manifestation of a chair pattern.
You don not need to create a $(document).mousemove( function(e) {})
to handle mouse x,y. Get the event in the $.hover
function and from there it is possible to get x and y positions of the mouse. See the code below:
$('foo').hover(function(e){
var pos = [e.pageX-150,e.pageY];
$('foo1').dialog( "option", "position", pos );
$('foo1').dialog('open');
},function(){
$('foo1').dialog('close');
});
Here is some example code I've found... does anyone have a better way?
function include(url)
{
var s = document.createElement("script");
s.setAttribute("type", "text/javascript");
s.setAttribute("src", url);
var nodes = document.getElementsByTagName("*");
var node = nodes[nodes.length -1].parentNode;
node.appendChild(s);
}
Wikipedia has a very good answer http://en.wikipedia.org/wiki/Universally_unique_identifier#Collisions
the number of random version 4 UUIDs which need to be generated in order to have a 50% probability of at least one collision is 2.71 quintillion, computed as follows:
...
This number is equivalent to generating 1 billion UUIDs per second for about 85 years, and a file containing this many UUIDs, at 16 bytes per UUID, would be about 45 exabytes, many times larger than the largest databases currently in existence, which are on the order of hundreds of petabytes.
...
Thus, for there to be a one in a billion chance of duplication, 103 trillion version 4 UUIDs must be generated.
Broadcast ping:
$ ping 192.168.1.255
PING 192.168.1.255 (192.168.1.255): 56 data bytes
64 bytes from 192.168.1.154: icmp_seq=0 ttl=64 time=0.104 ms
64 bytes from 192.168.1.51: icmp_seq=0 ttl=64 time=2.058 ms (DUP!)
64 bytes from 192.168.1.151: icmp_seq=0 ttl=64 time=2.135 ms (DUP!)
...
(Add a -b
option on Linux)
php7.1 mongoDB:
$data = $collection->findOne([],['sort' => ['_id' => -1],'projection' => ['_id' => 1]]);
I believe sideshowbarker 's answer here has all the info you need to fix this. If your problem is just No 'Access-Control-Allow-Origin' header is present on the response you're getting, you can set up a CORS proxy to get around this. Way more info on it in the linked answer
This is the simple way. As basic I took it from http://codepen.io/rpdasilva/pen/DpbFf, and done some changes. For now code is more simply. And you can get: in controller - "4124561232", in view "(412) 456-1232"
Filter:
myApp.filter 'tel', ->
(tel) ->
if !tel
return ''
value = tel.toString().trim().replace(/^\+/, '')
city = undefined
number = undefined
res = null
switch value.length
when 1, 2, 3
city = value
else
city = value.slice(0, 3)
number = value.slice(3)
if number
if number.length > 3
number = number.slice(0, 3) + '-' + number.slice(3, 7)
else
number = number
res = ('(' + city + ') ' + number).trim()
else
res = '(' + city
return res
And directive:
myApp.directive 'phoneInput', ($filter, $browser) ->
require: 'ngModel'
scope:
phone: '=ngModel'
link: ($scope, $element, $attrs) ->
$scope.$watch "phone", (newVal, oldVal) ->
value = newVal.toString().replace(/[^0-9]/g, '').slice 0, 10
$scope.phone = value
$element.val $filter('tel')(value, false)
return
return
According to the documentation on here http://angularjs.blogspot.co.uk/2017/03/angular-400-now-available.html you 'should' just be able to run...
npm install @angular/{common,compiler,compiler-cli,core,forms,http,platform-browser,platform-browser-dynamic,platform-server,router,animations}@latest typescript@latest --save
I tried it and got a couple of errors due to my zone.js and ngrx/store libraries being older versions.
Updating those to the latest versions npm install zone.js@latest --save
and npm install @ngrx/store@latest -save
, then running the angular install again worked for me.
This is the same as @KeithK's answer, but with a few more details. First, create a new control based on TextBox.
using System.Web.UI;
using System.Web.UI.WebControls;
namespace MyProject
{
public class LimitedMultiLineTextBox : System.Web.UI.WebControls.TextBox
{
protected override void Render(HtmlTextWriter writer)
{
this.TextMode = TextBoxMode.MultiLine;
if (this.MaxLength > 0)
{
writer.AddAttribute(HtmlTextWriterAttribute.Maxlength, this.MaxLength.ToString());
}
base.Render(writer);
}
}
}
Note that the code above always sets the textmode to multiline.
In order to use this, you need to register it on the aspx page. This is required because you'll need to reference it using the TagPrefix, otherwise compilation will complain about custom generic controls.
<%@ Register Assembly="MyProject" Namespace="MyProject" TagPrefix="mp" %>
<mp:LimitedMultiLineTextBox runat="server" Rows="3" ...
For what its worth you are also only generating numbers between 0 and 99 (inclusive). If you wanted to generate values between 0 and 100 you would need.
rand() % 101
in addition to calling srand() as mentioned by others.
If you can't use padding (for example you have borders in td) try this
table {
border-collapse: separate;
border-spacing: 2px;
}
I like THE answer that checks if s2 is a substring of s1 concatenated with s1.
I wanted to add an optimization that doesn't lose its elegance.
Instead of concatenating the strings you can use a join view (I don't know for other language, but for C++ Boost.Range provide such kind of views).
As the check if a string is a substring of another has linear average complexity (Worst-case complexity is quadratic), this optimization should improve the speed by a factor of 2 in average.
I have another way to do this... suppose you swap out your message converter to String for your RestTemplate, then you can receive raw JSON. Using the raw JSON, you can then map it into your Generic Collection using a Jackson Object Mapper. Here's how:
Swap out the message converter:
List<HttpMessageConverter<?>> oldConverters = new ArrayList<HttpMessageConverter<?>>();
oldConverters.addAll(template.getMessageConverters());
List<HttpMessageConverter<?>> stringConverter = new ArrayList<HttpMessageConverter<?>>();
stringConverter.add(new StringHttpMessageConverter());
template.setMessageConverters(stringConverter);
Then get your JSON response like this:
ResponseEntity<String> response = template.exchange(uri, HttpMethod.GET, null, String.class);
Process the response like this:
String body = null;
List<T> result = new ArrayList<T>();
ObjectMapper mapper = new ObjectMapper();
if (response.hasBody()) {
body = items.getBody();
try {
result = mapper.readValue(body, mapper.getTypeFactory().constructCollectionType(List.class, clazz));
} catch (Exception e) {
e.printStackTrace();
} finally {
template.setMessageConverters(oldConverters);
}
...
I know this is an old question, but rather than adding the snapin which is apparently unsupported, I just looked at the EMS shortcut properties and copied those commands.
The full shortcut target is:
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe -noexit -command ". 'C:\Program Files\Microsoft\Exchange Server\V14\bin\RemoteExchange.ps1'; Connect-ExchangeServer -auto"
So I put the following at the start of my script and it seemed to function as expected:
. 'C:\Program Files\Microsoft\Exchange Server\V14\bin\RemoteExchange.ps1'
Connect-ExchangeServer -auto
Notes:
The network setup is crucial for any measurements. It makes a huge difference, if you are communicating via sockets on your local machine or with the other end of the world.
Three things I want to add to the discussion:
we can convert date into many formats like
SELECT convert(varchar, getdate(), 106)
This returns dd mon yyyy
More Here This may help you
Use a for loop that ranges through all keys in prices
:
for key, value in prices.items():
print key
print "price: %s" %value
Make sure that you change prices.items()
to prices.iteritems()
if you're using Python 2.x
Put this in your UIView
subclass (it's easiest if you make a sublcass for this functionality).
class YourView: UIView {
//Define your initialisers here
override func touchesBegan(touches: Set<NSObject>, withEvent event: UIEvent) {
if let touch = touches.first as? UITouch {
let currentPoint = touch.locationInView(self)
// do something with your currentPoint
}
}
override func touchesMoved(touches: Set<NSObject>, withEvent event: UIEvent) {
if let touch = touches.first as? UITouch {
let currentPoint = touch.locationInView(self)
// do something with your currentPoint
}
}
override func touchesEnded(touches: Set<NSObject>, withEvent event: UIEvent) {
if let touch = touches.first as? UITouch {
let currentPoint = touch.locationInView(self)
// do something with your currentPoint
}
}
}
If this is a BAT file in a different directory than the current directory, you may see an error like "python: can't open file 'somescript.py': [Errno 2] No such file or directory". This can be fixed by specifying an absolute path to the BAT file using %~dp0
(the drive letter and path of that batch file).
@echo off
python %~dp0\somescript.py %*
(This way you can ignore the c:\
or whatever, because perhaps you may want to move this script)
const keys = Array(n).keys();
[...Array.from(keys)].forEach(callback);
in Typescript
SHOW ENGINE INNODB STATUS \G
Look for the Section -
TRANSACTIONS
We can use INFORMATION_SCHEMA Tables.
Useful Queries
To check about all the locks transactions are waiting for:
USE INFORMATION_SCHEMA;
SELECT * FROM INNODB_LOCK_WAITS;
A list of blocking transactions:
SELECT *
FROM INNODB_LOCKS
WHERE LOCK_TRX_ID IN (SELECT BLOCKING_TRX_ID FROM INNODB_LOCK_WAITS);
OR
SELECT INNODB_LOCKS.*
FROM INNODB_LOCKS
JOIN INNODB_LOCK_WAITS
ON (INNODB_LOCKS.LOCK_TRX_ID = INNODB_LOCK_WAITS.BLOCKING_TRX_ID);
A List of locks on particular table:
SELECT * FROM INNODB_LOCKS
WHERE LOCK_TABLE = db_name.table_name;
A list of transactions waiting for locks:
SELECT TRX_ID, TRX_REQUESTED_LOCK_ID, TRX_MYSQL_THREAD_ID, TRX_QUERY
FROM INNODB_TRX
WHERE TRX_STATE = 'LOCK WAIT';
Reference - MySQL Troubleshooting: What To Do When Queries Don't Work, Chapter 6 - Page 96.
One more procedural style example with mysqli_multi_query
, assumes $query
is filled with semicolon-separated statements.
mysqli_begin_transaction ($link);
for (mysqli_multi_query ($link, $query);
mysqli_more_results ($link);
mysqli_next_result ($link) );
! mysqli_errno ($link) ?
mysqli_commit ($link) : mysqli_rollback ($link);
I have Used it as follow and it is working perfectly.
import React from 'react';
import * as moment from 'moment'
exports default class MyComponent extends React.Component {
render() {
<div>
{moment(dateToBeFormate).format('DD/MM/YYYY')}
</div>
}
}
This answer has two main sections:
If you're only interested in the solutions, skip the first section.
To fully understand how centering works in a grid container, it's important to first understand the structure and scope of grid layout.
The HTML structure of a grid container has three levels:
Each of these levels is independent from the others, in terms of applying grid properties.
The scope of a grid container is limited to a parent-child relationship.
This means that a grid container is always the parent and a grid item is always the child. Grid properties work only within this relationship.
Descendants of a grid container beyond the children are not part of grid layout and will not accept grid properties. (At least not until the subgrid
feature has been implemented, which will allow descendants of grid items to respect the lines of the primary container.)
Here's an example of the structure and scope concepts described above.
Imagine a tic-tac-toe-like grid.
article {
display: inline-grid;
grid-template-rows: 100px 100px 100px;
grid-template-columns: 100px 100px 100px;
grid-gap: 3px;
}
You want the X's and O's centered in each cell.
So you apply the centering at the container level:
article {
display: inline-grid;
grid-template-rows: 100px 100px 100px;
grid-template-columns: 100px 100px 100px;
grid-gap: 3px;
justify-items: center;
}
But because of the structure and scope of grid layout, justify-items
on the container centers the grid items, not the content (at least not directly).
article {_x000D_
display: inline-grid;_x000D_
grid-template-rows: 100px 100px 100px;_x000D_
grid-template-columns: 100px 100px 100px;_x000D_
grid-gap: 3px;_x000D_
justify-items: center;_x000D_
}_x000D_
_x000D_
section {_x000D_
border: 2px solid black;_x000D_
font-size: 3em;_x000D_
}
_x000D_
<article>_x000D_
<section>X</section>_x000D_
<section>O</section>_x000D_
<section>X</section>_x000D_
<section>O</section>_x000D_
<section>X</section>_x000D_
<section>O</section>_x000D_
<section>X</section>_x000D_
<section>O</section>_x000D_
<section>X</section>_x000D_
</article>
_x000D_
Same problem with align-items
: The content may be centered as a by-product, but you've lost the layout design.
article {
display: inline-grid;
grid-template-rows: 100px 100px 100px;
grid-template-columns: 100px 100px 100px;
grid-gap: 3px;
justify-items: center;
align-items: center;
}
article {_x000D_
display: inline-grid;_x000D_
grid-template-rows: 100px 100px 100px;_x000D_
grid-template-columns: 100px 100px 100px;_x000D_
grid-gap: 3px;_x000D_
justify-items: center;_x000D_
align-items: center;_x000D_
}_x000D_
_x000D_
section {_x000D_
border: 2px solid black;_x000D_
font-size: 3em;_x000D_
}
_x000D_
<article>_x000D_
<section>X</section>_x000D_
<section>O</section>_x000D_
<section>X</section>_x000D_
<section>O</section>_x000D_
<section>X</section>_x000D_
<section>O</section>_x000D_
<section>X</section>_x000D_
<section>O</section>_x000D_
<section>X</section>_x000D_
</article>
_x000D_
To center the content you need to take a different approach. Referring again to the structure and scope of grid layout, you need to treat the grid item as the parent and the content as the child.
article {
display: inline-grid;
grid-template-rows: 100px 100px 100px;
grid-template-columns: 100px 100px 100px;
grid-gap: 3px;
}
section {
display: flex;
justify-content: center;
align-items: center;
border: 2px solid black;
font-size: 3em;
}
article {_x000D_
display: inline-grid;_x000D_
grid-template-rows: 100px 100px 100px;_x000D_
grid-template-columns: 100px 100px 100px;_x000D_
grid-gap: 3px;_x000D_
}_x000D_
_x000D_
section {_x000D_
display: flex;_x000D_
justify-content: center;_x000D_
align-items: center;_x000D_
border: 2px solid black;_x000D_
font-size: 3em;_x000D_
}
_x000D_
<article>_x000D_
<section>X</section>_x000D_
<section>O</section>_x000D_
<section>X</section>_x000D_
<section>O</section>_x000D_
<section>X</section>_x000D_
<section>O</section>_x000D_
<section>X</section>_x000D_
<section>O</section>_x000D_
<section>X</section>_x000D_
</article>
_x000D_
There are multiple methods for centering grid items and their content.
Here's a basic 2x2 grid:
grid-container {_x000D_
display: grid;_x000D_
grid-template-columns: 1fr 1fr;_x000D_
grid-auto-rows: 75px;_x000D_
grid-gap: 10px;_x000D_
}_x000D_
_x000D_
_x000D_
/* can ignore styles below; decorative only */_x000D_
grid-container {_x000D_
background-color: lightyellow;_x000D_
border: 1px solid #bbb;_x000D_
padding: 10px;_x000D_
}_x000D_
grid-item {_x000D_
background-color: lightgreen;_x000D_
border: 1px solid #ccc;_x000D_
}
_x000D_
<grid-container>_x000D_
<grid-item>this text should be centered</grid-item>_x000D_
<grid-item>this text should be centered</grid-item>_x000D_
<grid-item><img src="http://i.imgur.com/60PVLis.png" width="50" height="50" alt=""></grid-item>_x000D_
<grid-item><img src="http://i.imgur.com/60PVLis.png" width="50" height="50" alt=""></grid-item>_x000D_
</grid-container>
_x000D_
For a simple and easy way to center the content of grid items use flexbox.
More specifically, make the grid item into a flex container.
There is no conflict, spec violation or other problem with this method. It's clean and valid.
grid-item {
display: flex;
align-items: center;
justify-content: center;
}
grid-container {_x000D_
display: grid;_x000D_
grid-template-columns: 1fr 1fr;_x000D_
grid-auto-rows: 75px;_x000D_
grid-gap: 10px;_x000D_
}_x000D_
_x000D_
grid-item {_x000D_
display: flex; /* new */_x000D_
align-items: center; /* new */_x000D_
justify-content: center; /* new */_x000D_
}_x000D_
_x000D_
/* can ignore styles below; decorative only */_x000D_
grid-container {_x000D_
background-color: lightyellow;_x000D_
border: 1px solid #bbb;_x000D_
padding: 10px;_x000D_
}_x000D_
grid-item {_x000D_
background-color: lightgreen;_x000D_
border: 1px solid #ccc;_x000D_
}
_x000D_
<grid-container>_x000D_
<grid-item>this text should be centered</grid-item>_x000D_
<grid-item>this text should be centered</grid-item>_x000D_
<grid-item><img src="http://i.imgur.com/60PVLis.png" width="50" height="50" alt=""></grid-item>_x000D_
<grid-item><img src="http://i.imgur.com/60PVLis.png" width="50" height="50" alt=""></grid-item>_x000D_
</grid-container>
_x000D_
See this post for a complete explanation:
In the same way that a flex item can also be a flex container, a grid item can also be a grid container. This solution is similar to the flexbox solution above, except centering is done with grid, not flex, properties.
grid-container {_x000D_
display: grid;_x000D_
grid-template-columns: 1fr 1fr;_x000D_
grid-auto-rows: 75px;_x000D_
grid-gap: 10px;_x000D_
}_x000D_
_x000D_
grid-item {_x000D_
display: grid; /* new */_x000D_
align-items: center; /* new */_x000D_
justify-items: center; /* new */_x000D_
}_x000D_
_x000D_
/* can ignore styles below; decorative only */_x000D_
grid-container {_x000D_
background-color: lightyellow;_x000D_
border: 1px solid #bbb;_x000D_
padding: 10px;_x000D_
}_x000D_
grid-item {_x000D_
background-color: lightgreen;_x000D_
border: 1px solid #ccc;_x000D_
}
_x000D_
<grid-container>_x000D_
<grid-item>this text should be centered</grid-item>_x000D_
<grid-item>this text should be centered</grid-item>_x000D_
<grid-item><img src="http://i.imgur.com/60PVLis.png" width="50" height="50" alt=""></grid-item>_x000D_
<grid-item><img src="http://i.imgur.com/60PVLis.png" width="50" height="50" alt=""></grid-item>_x000D_
</grid-container>
_x000D_
auto
marginsUse margin: auto
to vertically and horizontally center grid items.
grid-item {
margin: auto;
}
grid-container {_x000D_
display: grid;_x000D_
grid-template-columns: 1fr 1fr;_x000D_
grid-auto-rows: 75px;_x000D_
grid-gap: 10px;_x000D_
}_x000D_
_x000D_
grid-item {_x000D_
margin: auto;_x000D_
}_x000D_
_x000D_
/* can ignore styles below; decorative only */_x000D_
grid-container {_x000D_
background-color: lightyellow;_x000D_
border: 1px solid #bbb;_x000D_
padding: 10px;_x000D_
}_x000D_
grid-item {_x000D_
background-color: lightgreen;_x000D_
border: 1px solid #ccc;_x000D_
}
_x000D_
<grid-container>_x000D_
<grid-item>this text should be centered</grid-item>_x000D_
<grid-item>this text should be centered</grid-item>_x000D_
<grid-item><img src="http://i.imgur.com/60PVLis.png" width="50" height="50" alt=""></grid-item>_x000D_
<grid-item><img src="http://i.imgur.com/60PVLis.png" width="50" height="50" alt=""></grid-item>_x000D_
</grid-container>
_x000D_
To center the content of grid items you need to make the item into a grid (or flex) container, wrap anonymous items in their own elements (since they cannot be directly targeted by CSS), and apply the margins to the new elements.
grid-item {
display: flex;
}
span, img {
margin: auto;
}
grid-container {_x000D_
display: grid;_x000D_
grid-template-columns: 1fr 1fr;_x000D_
grid-auto-rows: 75px;_x000D_
grid-gap: 10px;_x000D_
}_x000D_
_x000D_
grid-item {_x000D_
display: flex;_x000D_
}_x000D_
_x000D_
span, img {_x000D_
margin: auto;_x000D_
}_x000D_
_x000D_
/* can ignore styles below; decorative only */_x000D_
grid-container {_x000D_
background-color: lightyellow;_x000D_
border: 1px solid #bbb;_x000D_
padding: 10px;_x000D_
}_x000D_
grid-item {_x000D_
background-color: lightgreen;_x000D_
border: 1px solid #ccc;_x000D_
}
_x000D_
<grid-container>_x000D_
<grid-item><span>this text should be centered</span></grid-item>_x000D_
<grid-item><span>this text should be centered</span></grid-item>_x000D_
<grid-item><img src="http://i.imgur.com/60PVLis.png" width="50" height="50" alt=""></grid-item>_x000D_
<grid-item><img src="http://i.imgur.com/60PVLis.png" width="50" height="50" alt=""></grid-item>_x000D_
</grid-container>
_x000D_
When considering using the following properties to align grid items, read the section on auto
margins above.
align-items
justify-items
align-self
justify-self
https://www.w3.org/TR/css-align-3/#property-index
text-align: center
To center content horizontally in a grid item, you can use the text-align
property.
grid-container {_x000D_
display: grid;_x000D_
grid-template-columns: 1fr 1fr;_x000D_
grid-auto-rows: 75px;_x000D_
grid-gap: 10px;_x000D_
text-align: center; /* new */_x000D_
}_x000D_
_x000D_
_x000D_
/* can ignore styles below; decorative only */_x000D_
grid-container {_x000D_
background-color: lightyellow;_x000D_
border: 1px solid #bbb;_x000D_
padding: 10px;_x000D_
}_x000D_
grid-item {_x000D_
background-color: lightgreen;_x000D_
border: 1px solid #ccc;_x000D_
}
_x000D_
<grid-container>_x000D_
<grid-item>this text should be centered</grid-item>_x000D_
<grid-item>this text should be centered</grid-item>_x000D_
<grid-item><img src="http://i.imgur.com/60PVLis.png" width="50" height="50" alt=""></grid-item>_x000D_
<grid-item><img src="http://i.imgur.com/60PVLis.png" width="50" height="50" alt=""></grid-item>_x000D_
</grid-container>
_x000D_
Note that for vertical centering, vertical-align: middle
will not work.
This is because the vertical-align
property applies only to inline and table-cell containers.
grid-container {_x000D_
display: grid;_x000D_
grid-template-columns: 1fr 1fr;_x000D_
grid-auto-rows: 75px;_x000D_
grid-gap: 10px;_x000D_
text-align: center; /* <--- works */_x000D_
vertical-align: middle; /* <--- fails */_x000D_
}_x000D_
_x000D_
_x000D_
/* can ignore styles below; decorative only */_x000D_
grid-container {_x000D_
background-color: lightyellow;_x000D_
border: 1px solid #bbb;_x000D_
padding: 10px;_x000D_
}_x000D_
grid-item {_x000D_
background-color: lightgreen;_x000D_
border: 1px solid #ccc;_x000D_
}
_x000D_
<grid-container>_x000D_
<grid-item>this text should be centered</grid-item>_x000D_
<grid-item>this text should be centered</grid-item>_x000D_
<grid-item><img src="http://i.imgur.com/60PVLis.png" width="50" height="50" alt=""></grid-item>_x000D_
<grid-item><img src="http://i.imgur.com/60PVLis.png" width="50" height="50" alt=""></grid-item>_x000D_
</grid-container>
_x000D_
One might say that display: inline-grid
establishes an inline-level container, and that would be true. So why doesn't vertical-align
work in grid items?
The reason is that in a grid formatting context, items are treated as block-level elements.
The
display
value of a grid item is blockified: if the specifieddisplay
of an in-flow child of an element generating a grid container is an inline-level value, it computes to its block-level equivalent.
In a block formatting context, something the vertical-align
property was originally designed for, the browser doesn't expect to find a block-level element in an inline-level container. That's invalid HTML.
Lastly, there's a general CSS centering solution that also works in Grid: absolute positioning
This is a good method for centering objects that need to be removed from the document flow. For example, if you want to:
Simply set position: absolute
on the element to be centered, and position: relative
on the ancestor that will serve as the containing block (it's usually the parent). Something like this:
grid-item {
position: relative;
text-align: center;
}
span {
position: absolute;
left: 50%;
top: 50%;
transform: translate(-50%, -50%);
}
grid-container {_x000D_
display: grid;_x000D_
grid-template-columns: 1fr 1fr;_x000D_
grid-auto-rows: 75px;_x000D_
grid-gap: 10px;_x000D_
}_x000D_
_x000D_
grid-item {_x000D_
position: relative;_x000D_
text-align: center;_x000D_
}_x000D_
_x000D_
span, img {_x000D_
position: absolute;_x000D_
left: 50%;_x000D_
top: 50%;_x000D_
transform: translate(-50%, -50%);_x000D_
}_x000D_
_x000D_
_x000D_
/* can ignore styles below; decorative only */_x000D_
_x000D_
grid-container {_x000D_
background-color: lightyellow;_x000D_
border: 1px solid #bbb;_x000D_
padding: 10px;_x000D_
}_x000D_
_x000D_
grid-item {_x000D_
background-color: lightgreen;_x000D_
border: 1px solid #ccc;_x000D_
}
_x000D_
<grid-container>_x000D_
<grid-item><span>this text should be centered</span></grid-item>_x000D_
<grid-item><span>this text should be centered</span></grid-item>_x000D_
<grid-item><img src="http://i.imgur.com/60PVLis.png" width="50" height="50" alt=""></grid-item>_x000D_
<grid-item><img src="http://i.imgur.com/60PVLis.png" width="50" height="50" alt=""></grid-item>_x000D_
</grid-container>
_x000D_
Here's a complete explanation for how this method works:
Here's the section on absolute positioning in the Grid spec:
Several of the responses rely on an exception being thrown and having it handled in the OnException override. In my case, I wanted to return statuses such as bad request if the user, say, had passed in a bad ID. What works for me is to use the ControllerContext:
var jsonResult = new JsonResult { JsonRequestBehavior = JsonRequestBehavior.AllowGet, Data = "whoops" };
ControllerContext.HttpContext.Response.StatusCode = (int)HttpStatusCode.BadRequest;
return jsonResult;
Your code is correct. I tested:
r = requests.get("http://www.google.com")
print(r.content)
And it returned plenty of content. Check the url, try "http://www.google.com". Cheers!
Expanding on @gecco 's answer, the following is an example that'll show you the difference:
def foo(**kwargs):
for entry in kwargs.items():
print("Key: {}, value: {}".format(entry[0], entry[1]))
# call using normal keys:
foo(a=1, b=2, c=3)
# call using an unpacked dictionary:
foo(**{"a": 1, "b":2, "c":3})
# call using a dictionary fails because the function will think you are
# giving it a positional argument
foo({"a": 1, "b": 2, "c": 3})
# this yields the same error as any other positional argument
foo(3)
foo("string")
Here you can see how unpacking a dictionary works, and why sending an actual dictionary fails
i use this:
webBrowser.Document.InvokeScript("execScript", new object[] { "alert(123)", "JavaScript" })
Ok this this seems late and I was testing the app with internet connection off to test my app for some functionality. As I turned off the internet it gave me such error. After I turned on the internet I can install again. I know this is silly but this might be helpful to someone
Along with the other answers mentioned by Barmar and Joni, I've noticed that I sometimes have to leave a blank line before and after my EOF when using <<-EOF
.
For mac this is an example way to copy (into clipboard) paste (from clipboard) using command line
Copy the result of pwd
command to clipboard as
$ pwd | pbcopy
Use the content in the clipboard as
$ cd $(pbpaste)
Enable general query log by the following query in mysql command line
SET GLOBAL general_log = 'ON';
Now open C:/xampp/mysql/data/mysql.log
and check query log
If it fails, open your my.cnf
file. For windows its my.ini
file and enable it there. Just make sure its in the [mysqld]
section
[mysqld]
general_log = 1
Note: In xampp my.ini
file can be either found in xampp\mysql
or in c:\windows
directory
While the other answers are correct it certainly is not the "Spring way" to use the HttpServletRequest object directly. The answer is actually quite simple and what you would expect if you're familiar with Spring MVC.
@RequestMapping(value = {"/search/", "/search"}, method = RequestMethod.GET)
public String search(
@RequestParam Map<String,String> allRequestParams, ModelMap model) {
return "viewName";
}
Even if that's a 7 years old question, people new to R should consider using the data.table, package.
A data.table is a data.frame so all you can do for/to a data.frame you can also do. But many think are ORDERS of magnitude faster with data.table.
vec <- 1:10
library(data.table)
DT <- data.table(start=c(1,3,5,7), end=c(2,6,7,9))
DT[,new:=apply(DT,1,function(row) mean(vec[ row[1] : row[2] ] ))]
SELECT * INTO < new_table > FROM < existing_table > WHERE < clause >
I had the exact error when deleting a file. It was a Windows Service running under a Service Account which was unable to delete a .pdf document from a Shared Folder even though it had Full Control of the folder.
What worked for me was navigating to the Security tab of the Shared Folder > Advanced > Share > Add.
I then added the service account to the administrators group, applied the changes and the service account was then able to perform all operations on all files within that folder.
Try tagging it with:
[DisplayFormat(ApplyFormatInEditMode = true, DataFormatString = "{0:MM/dd/yyyy}")]
Your original string, a = 'a\\nb'
does not actually have two '\'
characters, the first one is an escape for the latter. If you do, print a
, you'll see that you actually have only one '\'
character.
>>> a = 'a\\nb'
>>> print a
a\nb
If, however, what you mean is to interpret the '\n'
as a newline character, without escaping the slash, then:
>>> b = a.replace('\\n', '\n')
>>> b
'a\nb'
>>> print b
a
b
I'd use a combination of the contains method and the toUpper
method that are part of the String class. An example is below:
String string1 = "AAABBBCCC";
String string2 = "DDDEEEFFF";
String searchForThis = "AABB";
System.out.println("Search1="+string1.toUpperCase().contains(searchForThis.toUpperCase()));
System.out.println("Search2="+string2.toUpperCase().contains(searchForThis.toUpperCase()));
This will return:
Search1=true
Search2=false
we can use
element[role="ourRole"] {
requried style !important; /*for overriding the old css styles */
}
I know all these steps and actually the following is the short and fantastic way.
1 - Go to appengine.google.com, open your app
2 - Administration > Versions > Add Domain... (your domain has to be linked to your Google Apps account, follow the steps to do that including the domain verification.)
3 - Go to www.google.com/a/yourdomain.com
4 - Dashboard > your app should be listed here. Click on it.
5 - myappid settings page > Web address > Add new URL
6 - Simply enter www and click Add
7 - Using your domain hosting provider's web interface, add a CNAME for www for your domain and point to ghs.googlehosted.com
8 - Now you have www.mydomain.com linked to your app.
- If you want naked domain, i.e. mydomain.com, use a redirect un your DNS administrator (not in Google Apps) and point it to www.mydomain.com.
Now that I've done that all, I can go to my appengine app successfully using my custom domain. For example http://cic.mx and http://www.cic.mx both take me to my app. But URL changes to -myappid-.appspot.com and I don't want it to happen !
Has anyone solved this issue?
I'm using a php app on the appengine, with a wordpress instance.
The line
when(someObject.doSomething(argumentCaptor.capture())).thenReturn(true);
would do the same as
when(someObject.doSomething(Matchers.any())).thenReturn(true);
So, using argumentCaptor.capture() when stubbing has no added value. Using Matchers.any() shows better what really happens and therefor is better for readability. With argumentCaptor.capture(), you can't read what arguments are really matched. And instead of using any(), you can use more specific matchers when you have more information (class of the expected argument), to improve your test.
And another problem: If using argumentCaptor.capture() when stubbing it becomes unclear how many values you should expect to be captured after verification. We want to capture a value during verification, not during stubbing because at that point there is no value to capture yet. So what does the argument captors capture method capture during stubbing? It capture anything because there is nothing to be captured yet. I consider it to be undefined behavior and I don't want to use undefined behavior.
Try this
<include
android:id="@+id/OnlineOffline"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
layout="@layout/YourLayoutName" />
I got around this by temporarily rewriting my function to something like this:
IF OBJECT_ID ('[dbo].[fx_dosomething]', 'TF') IS NOT NULL
drop function [dbo].[fx_dosomething];
GO
create FUNCTION dbo.fx_dosomething ( @x numeric )
returns @t table (debug varchar(100), x2 numeric)
as
begin
declare @debug varchar(100)
set @debug = 'printme';
declare @x2 numeric
set @x2 = 0.123456;
insert into @t values (@debug, @x2)
return
end
go
select * from fx_dosomething(0.1)
I use these git alias and it pretty much does the job automatic:
git config --global alias.move '!git checkout master; git branch -m $1 $2; git status; git push --delete origin $1; git status; git push -u origin $2; git branch -a; exit;'
Usage: git move FROM_BRANCH TO_BRANCH
It works if you have the default names like master, origin etc. You can modify as you wish but it gives you the idea.
in addition: for those who have a empty POST variable, don't use this:
name="[levels][level][]"
rather use this (as it is already here in this example):
name="levels[level][]"
Theres two properties on the model you need to set. The first $primaryKey
to tell the model what column to expect the primary key on. The second $incrementing
so it knows the primary key isn't a linear auto incrementing value.
class MyModel extends Model
{
protected $primaryKey = 'my_column';
public $incrementing = false;
}
For more info see the Primary Keys
section in the documentation on Eloquent.
It is illegal to have multiple elements with the same id
. The id
is used as an individual identifier. For groups of elements, use class
, and getElementsByClassName
instead.
Unlike the C#/.NET class library (and most other sensible languages), when you pass a String
in as the string-to-match argument to the string.replace
method, it doesn't do a string replace. It converts the string to a RegExp
and does a regex substitution. As Gumbo explains, a regex substitution requires the g
?lobal flag, which is not on by default, to replace all matches in one go.
If you want a real string-based replace — for example because the match-string is dynamic and might contain characters that have a special meaning in regexen — the JavaScript idiom for that is:
var id= 'c_'+date.split('/').join('');
Note that you also can use insert in order to put number into the required position within list:
initList = [1,2,3,4,5]
initList.insert(2, 10) # insert(pos, val) => initList = [1,2,10,3,4,5]
And also note that in python you can always get a list length using method len()
var str = "bar\r\nbaz\nfoo";
str.replace(/[\r\n]/g, '');
>> "barbazfoo"
Sometimes, all that's required is to stop the dev server before installing/updating packages.
This answer is directed at further questions regarding Subversion subcommands options. For every available subcommand (i.e. add, log, status ...), you can simply add the --help
option to display the complete list of available options you can use with your subcommand as well as examples on how to use them. The following snippet is taken directly from the svn log --help
command output under the "examples" section :
Show the latest 5 log messages for the current working copy
directory and display paths changed in each commit:
svn log -l 5 -v
To differentiate the routes, try adding a constraint that id must be numeric:
RouteTable.Routes.MapHttpRoute(
name: "DefaultApi",
routeTemplate: "api/{controller}/{id}",
constraints: new { id = @"\d+" }, // Only matches if "id" is one or more digits.
defaults: new { id = System.Web.Http.RouteParameter.Optional }
);
You can simply use pkill -f
like this:
pkill -f 'java -jar'
EDIT: To kill a particular java process running your specific jar use this regex based pkill command:
pkill -f 'java.*lnwskInterface'
In Python 2 use the tkFileDialog
module.
import tkFileDialog
tkFileDialog.askopenfilename()
In Python 3 use the tkinter.filedialog
module.
import tkinter.filedialog
tkinter.filedialog.askopenfilename()
Sometimes it is because you are using a BottomNavigationView. If you open an Intent from the navigation and in that activity you open a fragment lets say
transaction.replace(R.id.container,new YourFragment());
then the Activity won't be able to find the navigation method you are using.
SOLUTION: Change the activity to fragment and handle navigation with addOnBackStack in your app. If you've implemented the Jetpack Navigation just use fragments in your project.
You can also use $("ul li:first-child")
to only get the direct children of the UL.
I agree though, you need an ID or something else to identify the main UL otherwise it will just select them all. If you had a div with an ID around the UL the easiest thing to do would be$("#someDiv > ul > li")
In my case, using MAC OS X 10.11 and Android 2.0, and by doing exactly what Aqib Mumtaz has explained.
But, each time, I had this message : "A problem occurred configuring project ':app'. > Cannot evaluate module xxx : Configuration with name 'default' not found."
I found that the reason of this message is that Android 2.0 doesn't allow to create a library directly. So, I have decided first to create an app projet and then to modify the build.gradle in order to transform it as a library.
This solution doesn't work, because a Library project is very different than an app project.
So, I have resolved my problem like this :
Then continue with the solution proposed by Aqib Mumtaz.
As a result, your library source will be shared without needing to duplicate source files each time (it was an heresy for me!)
Hoping that this help you.
This code allows you to cut corners on each side of the rectangle:
div {
display:block;
height: 300px;
width: 200px;
background: url('http://lorempixel.com/180/290/') no-repeat;
background-size:cover;
-webkit-clip-path: polygon(10px 0%, calc(100% - 10px) 0%, 100% 10px, 100% calc(100% - 10px), calc(100% - 10px) 100%, 10px 100%, 0% calc(100% - 10px), 0% 10px);
clip-path: polygon(10px 0%, calc(100% - 10px) 0%, 100% 10px, 100% calc(100% - 10px), calc(100% - 10px) 100%, 10px 100%, 0% calc(100% - 10px), 0% 10px);
}
When modal hide? we check like this :
$('.yourmodal').on('hidden.bs.modal', function () {
// do something here
})
iframe
CSSBy using part of SimpleSam5's answer, I achieved this with a few of Tawk's chat iframes (their customization interface is fine but I needed further customizations).
In this particular iframe that shows up on mobile devices, I needed to hide the default icon and place one of my background images. I did the following:
Tawk_API.onLoad = function() {
// without a specific API, you may try a similar load function
// perhaps with a setTimeout to ensure the iframe's content is fully loaded
$('#mtawkchat-minified-iframe-element').
contents().find("head").append(
$("<style type='text/css'>"+
"#tawkchat-status-text-container {"+
"background: url(https://example.net/img/my_mobile_bg.png) no-repeat center center blue;"+
"background-size: 100%;"+
"} "+
"#tawkchat-status-icon {display:none} </style>")
);
};
I do not own any Tawk's domain and this worked for me, thus you may do this even if it's not from the same parent domain (despite Jeremy Becker's comment on Sam's answer).
If you will use pre defined delete methods as directly provided by spring JPA then below two queries will be execute by the framework.
First collect data(like id and other column) using by execute select query with delete query where clause.
then after getting resultSet of first query, second delete queries will be execute for all id(one by one)
Note : This is not optimized way for your application because many queries will be execute for single MYSQL delete query.
This is another optimized way for delete query code because only one delete query will execute by using below customized methods.
@NamedNativeQueries({
@NamedNativeQuery(name = "Abc.deleteByCreatedTimeBetween",
query = "DELETE FROM abc WHERE create_time BETWEEN ?1 AND ?2")
,
@NamedNativeQuery(name = "Abc.getByMaxId",
query = "SELECT max(id) from abc")
})
@Entity
public class Abc implements Serializable {
}
@Repository
public interface AbcRepository extends CrudRepository {
int getByMaxId();
@Transactional
@Modifying
void deleteByCreatedTimeBetween(String startDate, String endDate);
}
We use this code to check if the string is a valid date
var dt = new Date(txtDate.value)
if (isNaN(dt))
I'm using simple alias to create pull request,
alias pr='open -n -a "Google Chrome" --args "https://github.com/user/repo/compare/pre-master...nawarkhede:$(git_current_branch)\?expand\=1"'
The identity used to create the connection defines what tables you can see in Oracle. Did you provide different credentials when setting up the connection for the new version?
The following might help you:
ini_set('max_execution_time', 100000);
And in your mysql - max_allowed_packet=100M
in some cases where queries are too long sql also produce and error "MySQL server has gone away";
Change the values to whatever you need.
It should be like this
$(this).text($(this).text().replace('N/A, ', ''))
this will do the magic
<script>
document.addEventListener("DOMContentLoaded", function(event) {
var scrollpos = localStorage.getItem('scrollpos');
if (scrollpos) window.scrollTo(0, scrollpos);
});
window.onbeforeunload = function(e) {
localStorage.setItem('scrollpos', window.scrollY);
};
</script>
@CaptSolo, I tried your example, but it didn't work.
from itertools import groupby
[(c,len(list(cs))) for c,cs in groupby('Pedro Manoel')]
Output:
[('P', 1), ('e', 1), ('d', 1), ('r', 1), ('o', 1), (' ', 1), ('M', 1), ('a', 1), ('n', 1), ('o', 1), ('e', 1), ('l', 1)]
As you can see, there are two o's and two e's, but they got into separate groups. That's when I realized you need to sort the list passed to the groupby function. So, the correct usage would be:
name = list('Pedro Manoel')
name.sort()
[(c,len(list(cs))) for c,cs in groupby(name)]
Output:
[(' ', 1), ('M', 1), ('P', 1), ('a', 1), ('d', 1), ('e', 2), ('l', 1), ('n', 1), ('o', 2), ('r', 1)]
Just remembering, if the list is not sorted, the groupby function will not work!
The problem is probably that you forgot to close the program and that you instead have the program running in the background.
Find the console window where the exe file program is running, and close it by clicking the X in the upper right corner. Then try to recompile the program. In my case this solved the problem.
I know this posting is old, but I am answering for the other people like me who find this through the search engines.
A quick way to add response buffering in .NET Core 3.1 is
app.Use((context, next) =>
{
context.Request.EnableBuffering();
return next();
});
in Startup.cs. I found this also guarantees that buffering will be enabled before the stream has been read, which was a problem for .Net Core 3.1 with some of the other middleware/authorization filter answers I've seen.
Then you can read your request body via HttpContext.Request.Body
in your handler as several others have suggested.
Also worth considering is that EnableBuffering
has overloads that allow you to limit how much it will buffer in memory before it uses a temporary file, and also an overall limit to you buffer. NB if a request exceeds this limit an exception will be thrown and the request will never reach your handler.
You could use pandas
:
In [1]: import pandas as pd
In [2]: a = [[1.2,'abc',3],[1.2,'werew',4],[1.4,'qew',2]]
In [3]: my_df = pd.DataFrame(a)
In [4]: my_df.to_csv('my_csv.csv', index=False, header=False)
(Look at the last edit in this answer if you need to use .on()
with elements populated with JavaScript)
Use this for elements that are not populated using JavaScript:
$(".selector").on("mouseover", function () {
//stuff to do on mouseover
});
.hover()
has it's own handler: http://api.jquery.com/hover/
If you want to do multiple things, chain them in the .on()
handler like so:
$(".selector").on({
mouseenter: function () {
//stuff to do on mouse enter
},
mouseleave: function () {
//stuff to do on mouse leave
}
});
According to the answers provided below you can use hover
with .on()
, but:
Although strongly discouraged for new code, you may see the pseudo-event-name "hover" used as a shorthand for the string "mouseenter mouseleave". It attaches a single event handler for those two events, and the handler must examine event.type to determine whether the event is mouseenter or mouseleave. Do not confuse the "hover" pseudo-event-name with the .hover() method, which accepts one or two functions.
Also, there are no performance advantages to using it and it's more bulky than just using mouseenter
or mouseleave
. The answer I provided requires less code and is the proper way to achieve something like this.
EDIT
It's been a while since this question was answered and it seems to have gained some traction. The above code still stands, but I did want to add something to my original answer.
While I prefer using mouseenter
and mouseleave
(helps me understand whats going on in the code) with .on()
it is just the same as writing the following with hover()
$(".selector").hover(function () {
//stuff to do on mouse enter
},
function () {
//stuff to do on mouse leave
});
Since the original question did ask how they could properly use on()
with hover()
, I thought I would correct the usage of on()
and didn't find it necessary to add the hover()
code at the time.
EDIT DECEMBER 11, 2012
Some new answers provided below detail how .on()
should work if the div
in question is populated using JavaScript. For example, let's say you populate a div
using jQuery's .load()
event, like so:
(function ($) {
//append div to document body
$('<div class="selector">Test</div>').appendTo(document.body);
}(jQuery));
The above code for .on()
would not stand. Instead, you should modify your code slightly, like this:
$(document).on({
mouseenter: function () {
//stuff to do on mouse enter
},
mouseleave: function () {
//stuff to do on mouse leave
}
}, ".selector"); //pass the element as an argument to .on
This code will work for an element populated with JavaScript after a .load()
event has happened. Just change your argument to the appropriate selector.
Give width of image as match_parent and height as required, say 300 dp.
<ImageView
android:id = "@+id/imgXYZ"
android:layout_width = "match_parent"
android:layout_height = "300dp"
android:src="@drawable/imageXYZ"
/>
You need arguments like AF_UNIX or AF_INET to specify which type of socket addressing you would be using to implement IPC socket communication. AF stands for Address Family.
As in BSD standard Socket (adopted in Python socket module) addresses are represented as follows:
A single string is used for the AF_UNIX/AF_LOCAL address family. This option is used for IPC on local machines where no IP address is required.
A pair (host, port) is used for the AF_INET address family, where host is a string representing either a hostname in Internet domain notation like 'daring.cwi.nl' or an IPv4 address like '100.50.200.5', and port is an integer. Used to communicate between processes over the Internet.
AF_UNIX , AF_INET6 , AF_NETLINK , AF_TIPC , AF_CAN , AF_BLUETOOTH , AF_PACKET , AF_RDS are other option which could be used instead of AF_INET.
This thread about the differences between AF_INET and PF_INET might also be useful.
In Swift 3.0
let screenSize = UIScreen.main.bounds
let screenWidth = screenSize.width
let screenHeight = screenSize.height
In older swift: Do something like this:
let screenSize: CGRect = UIScreen.mainScreen().bounds
then you can access the width and height like this:
let screenWidth = screenSize.width
let screenHeight = screenSize.height
if you want 75% of your screen's width you can go:
let screenWidth = screenSize.width * 0.75
Swift 4.0
// Screen width.
public var screenWidth: CGFloat {
return UIScreen.main.bounds.width
}
// Screen height.
public var screenHeight: CGFloat {
return UIScreen.main.bounds.height
}
In Swift 5.0
let screenSize: CGRect = UIScreen.main.bounds
You can use the parse
method from the URL module in the request callback.
var http = require('http');
var url = require('url');
// Configure our HTTP server to respond with Hello World to all requests.
var server = http.createServer(function (request, response) {
var queryData = url.parse(request.url, true).query;
response.writeHead(200, {"Content-Type": "text/plain"});
if (queryData.name) {
// user told us their name in the GET request, ex: http://host:8000/?name=Tom
response.end('Hello ' + queryData.name + '\n');
} else {
response.end("Hello World\n");
}
});
// Listen on port 8000, IP defaults to 127.0.0.1
server.listen(8000);
I suggest you read the HTTP module documentation to get an idea of what you get in the createServer
callback. You should also take a look at sites like http://howtonode.org/ and checkout the Express framework to get started with Node faster.
By calling fork() you've created a child process. If the fork is successful (fork returned a non-zero PID) execution will continue from this point from within the child process. In this case we want to gracefully exit the parent process and then continue our work in the child process.
Maybe this will help: http://www.netzmafia.de/skripten/unix/linux-daemon-howto.html
<input data-ng-model="userInf.username" class="span12 editEmail" type="text" placeholder="[email protected]" pattern="[^@]+@[^@]+\.[a-zA-Z]{2,6}" required ng-disabled="true"/>
Also we can change a little example from ipr101
Object.prototype.toType = function() {
return ({}).toString.call(this).match(/\s([a-zA-Z]+)/)[1].toLowerCase()
}
and call as
"aaa".toType(); // 'string'
Pattern module in not available from django 1.8. So you need to remove pattern from your import and do something similar to the following:
from django.conf.urls import include, url
from django.contrib import admin
admin.autodiscover()
urlpatterns = [
# here we are not using pattern module like in previous django versions
url(r'^admin/', include(admin.site.urls)),
]
There are a variety of OCR libraries out there. However, my experience is that the major commercial implementations, ABBYY, Omnipage, and ReadIris, far outdo the open-source or other minor implementations. These commercial libraries are not primarily designed to work with Java, though of course it is possible.
Of course, if your interest is to learn the code, the open-source implementations will do the trick.
Even the other answers may work well, but I want tell best approach.
Binding class's inflate
as recommended in Android Documentation.One option is to inflate by DataBindingUtil
but when only you don't know have generated binding class.
--You have auto generated binding class
, use that class instead of using DataBindingUtil
.
In Java
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
HomeFragmentBinding binding = HomeFragmentBinding.inflate(inflater, container, false);
//set binding variables here
return binding.getRoot();
}
In Kotlin
lateinit var binding: HomeFragmentBinding
override fun onCreateView(inflater: LayoutInflater?, container: ViewGroup?, savedInstanceState: Bundle?): View? {
binding = HomeFragmentBinding.inflate(inflater, container, false)
return binding.root
}
In DataBindingUtil class documentation you can see.
inflate
T inflate (LayoutInflater inflater, int layoutId, ViewGroup parent, boolean attachToParent)
Use this version only if layoutId is unknown in advance. Otherwise, use the generated Binding's inflate method to ensure type-safe inflation.
If your layout biniding class is not generated @See this answer.
Access the dictionary with square brackets.
strikes = [number_map[int(x)] for x in input_str.split()]
You can use javascript to redirect after some time
setTimeout(function () {
window.location.href= 'http://www.google.com'; // the redirect goes here
},5000); // 5 seconds
For more modularity and in case you have many background images that you want to incorporate wherever you want you can for each image create a class :
.background-image1
{
background: url(image1.jpg);
}
.background-image2
{
background: url(image2.jpg);
}
and then insert the image wherever you want by adding a div
<div class='background-image1'>
<div class="page-header text-center", style='margin: 20px 0 0px;'>
<h1>blabaaboabaon</h1>
</div>
</div>
Cache() and persist() both the methods are used to improve performance of spark computation. These methods help to save intermediate results so they can be reused in subsequent stages.
The only difference between cache() and persist() is ,using Cache technique we can save intermediate results in memory only when needed while in Persist() we can save the intermediate results in 5 storage levels(MEMORY_ONLY, MEMORY_AND_DISK, MEMORY_ONLY_SER, MEMORY_AND_DISK_SER, DISK_ONLY).
As an node manager alternative you can use Volta from LinkedIn.
In Tomcat a .java and .class file will be created for every jsp files with in the application and the same can be found from the path below,
Apache-Tomcat\work\Catalina\localhost\'ApplicationName'\org\apache\jsp\index_jsp.java
In your case the jsp name is error.jsp so the path should be something like below
Apache-Tomcat\work\Catalina\localhost\'ApplicationName'\org\apache\jsp\error_jsp.java
in line no 124 you are trying to access a null object which results in null pointer exception.
Before your write to Excel need to change the format:
xlApp = New Excel.Application
xlWorkSheet = xlWorkBook.Sheets("Sheet1")
Dim cells As Excel.Range = xlWorkSheet.Cells
'set each cell's format to Text
cells.NumberFormat = "@"
'reset horizontal alignment to the right
cells.HorizontalAlignment = Excel.XlHAlign.xlHAlignRight
If I am just run the node app from console (not using forever etc) I use control + C, not sure if OSX has the same key combination to terminate but much faster than finding the process id and killing it, you could also add the following code to the chat app you are using and then type 'exit' in the console whenever you want to close down the app.
process.stdin.resume();
process.stdin.setEncoding('utf8');
process.stdin.on('data', function(data) {
if (data == 'exit\n') process.exit();
});
You can't get full path of a file at client's machine. Your code might work at localhost because your client and the server is the same machine and the file is at the root directory. But if you run it on a remote machine you will get an exception.
A solution using Promises, includes both progress bar & text countdown.
ProgressCountdown(10, 'pageBeginCountdown', 'pageBeginCountdownText').then(value => alert(`Page has started: ${value}.`));_x000D_
_x000D_
function ProgressCountdown(timeleft, bar, text) {_x000D_
return new Promise((resolve, reject) => {_x000D_
var countdownTimer = setInterval(() => {_x000D_
timeleft--;_x000D_
_x000D_
document.getElementById(bar).value = timeleft;_x000D_
document.getElementById(text).textContent = timeleft;_x000D_
_x000D_
if (timeleft <= 0) {_x000D_
clearInterval(countdownTimer);_x000D_
resolve(true);_x000D_
}_x000D_
}, 1000);_x000D_
});_x000D_
}
_x000D_
<div class="row begin-countdown">_x000D_
<div class="col-md-12 text-center">_x000D_
<progress value="10" max="10" id="pageBeginCountdown"></progress>_x000D_
<p> Begining in <span id="pageBeginCountdownText">10 </span> seconds</p>_x000D_
</div>_x000D_
</div>
_x000D_
The great thing about C# is that it is following a path beaten by years of Java developers before it. So, my advice, generally speaking when looking for tools of this nature, is to look for the solid Java answer and see if there exists a .NET adaptation yet.
So when it comes to DI (and there are so many options out there, this really is a matter of taste) is Spring.NET. Additionally, it's always wise to research the people behind projects. I have no issue suggesting SourceGear products for source control (outside of using them) because I have respect for Eric Sink. I have seen Mark Pollack speak and what can I say, the guy just gets it.
In the end, there are a lot of DI frameworks and your best bet is to do some sample projects with a few of them and make an educated choice.
Good luck!
I will try to cover it with examples:
Lock: One example where you would use lock
would be a shared dictionary into which items (that must have unique keys) are added.
The lock would ensure that one thread does not enter the mechanism of code that is checking for item being in dictionary while another thread (that is in the critical section) already has passed this check and is adding the item. If another thread tries to enter a locked code, it will wait (be blocked) until the object is released.
private static readonly Object obj = new Object();
lock (obj) //after object is locked no thread can come in and insert item into dictionary on a different thread right before other thread passed the check...
{
if (!sharedDict.ContainsKey(key))
{
sharedDict.Add(item);
}
}
Semaphore: Let's say you have a pool of connections, then an single thread might reserve one element in the pool by waiting for the semaphore to get a connection. It then uses the connection and when work is done releases the connection by releasing the semaphore.
Code example that I love is one of bouncer given by @Patric - here it goes:
using System;
using System.Collections.Generic;
using System.Text;
using System.Threading;
namespace TheNightclub
{
public class Program
{
public static Semaphore Bouncer { get; set; }
public static void Main(string[] args)
{
// Create the semaphore with 3 slots, where 3 are available.
Bouncer = new Semaphore(3, 3);
// Open the nightclub.
OpenNightclub();
}
public static void OpenNightclub()
{
for (int i = 1; i <= 50; i++)
{
// Let each guest enter on an own thread.
Thread thread = new Thread(new ParameterizedThreadStart(Guest));
thread.Start(i);
}
}
public static void Guest(object args)
{
// Wait to enter the nightclub (a semaphore to be released).
Console.WriteLine("Guest {0} is waiting to entering nightclub.", args);
Bouncer.WaitOne();
// Do some dancing.
Console.WriteLine("Guest {0} is doing some dancing.", args);
Thread.Sleep(500);
// Let one guest out (release one semaphore).
Console.WriteLine("Guest {0} is leaving the nightclub.", args);
Bouncer.Release(1);
}
}
}
Mutex It is pretty much Semaphore(1,1)
and often used globally (application wide otherwise arguably lock
is more appropriate). One would use global Mutex
when deleting node from a globally accessible list (last thing you want another thread to do something while you are deleting the node). When you acquire Mutex
if different thread tries to acquire the same Mutex
it will be put to sleep till SAME thread that acquired the Mutex
releases it.
Good example on creating global mutex is by @deepee
class SingleGlobalInstance : IDisposable
{
public bool hasHandle = false;
Mutex mutex;
private void InitMutex()
{
string appGuid = ((GuidAttribute)Assembly.GetExecutingAssembly().GetCustomAttributes(typeof(GuidAttribute), false).GetValue(0)).Value.ToString();
string mutexId = string.Format("Global\\{{{0}}}", appGuid);
mutex = new Mutex(false, mutexId);
var allowEveryoneRule = new MutexAccessRule(new SecurityIdentifier(WellKnownSidType.WorldSid, null), MutexRights.FullControl, AccessControlType.Allow);
var securitySettings = new MutexSecurity();
securitySettings.AddAccessRule(allowEveryoneRule);
mutex.SetAccessControl(securitySettings);
}
public SingleGlobalInstance(int timeOut)
{
InitMutex();
try
{
if(timeOut < 0)
hasHandle = mutex.WaitOne(Timeout.Infinite, false);
else
hasHandle = mutex.WaitOne(timeOut, false);
if (hasHandle == false)
throw new TimeoutException("Timeout waiting for exclusive access on SingleInstance");
}
catch (AbandonedMutexException)
{
hasHandle = true;
}
}
public void Dispose()
{
if (mutex != null)
{
if (hasHandle)
mutex.ReleaseMutex();
mutex.Dispose();
}
}
}
then use like:
using (new SingleGlobalInstance(1000)) //1000ms timeout on global lock
{
//Only 1 of these runs at a time
GlobalNodeList.Remove(node)
}
Hope this saves you some time.
I was having the problem as a beginner..........
There was issue in the path of the xml file I have saved.
It looks like the issue is now solved using an external command called brew rmdeps
or brew rmtree
.
To install and use, issue the following commands:
$ brew tap beeftornado/rmtree
$ brew rmtree <package>
See the above link for more information and discussion.
It appears that currently, there's no easy way to accomplish this.
However, I filed an issue on Homebrew's GitHub page, and somebody suggested a temporary solution until they add an exclusive command to solve this.
There's an external command called brew leaves
which prints all packages that are not dependencies of other packages.
If you do a logical and on the output of brew leaves
and brew deps <package>
, you might just get a list of the orphaned dependency packages, which you can uninstall manually afterwards. Combine this with xargs
and you'll get what you need, I guess (untested, don't count on this).
EDIT: Somebody just suggested a very similar solution, using join
instead of xargs
:
brew rm FORMULA
brew rm $(join <(brew leaves) <(brew deps FORMULA))
See the comment on the issue mentioned above for more info.
I made this change and now it works for me.
//BufferedReader reader = new BufferedReader(new InputStreamReader(is, "iso-8859-1"), 8);
BufferedReader reader = new BufferedReader(new InputStreamReader(is, HTTP.UTF_8), 8);
Solved by adding the following dependency into pom.xml file :
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
<scope>test</scope>
</dependency>
I used Palek's solution inside a Bootstrap validator and it works. I'd have added a comment to his but I don'y have the rep;). Simplified version:
$('#form').validator().on('submit', function (e) {
var response = grecaptcha.getResponse();
//recaptcha failed validation
if(response.length == 0) {
e.preventDefault();
$('#recaptcha-error').show();
}
//recaptcha passed validation
else {
$('#recaptcha-error').hide();
}
if (e.isDefaultPrevented()) {
return false;
} else {
return true;
}
});
That’s a typo. You’ve accidently set user.mail
with no e. Fix it by setting user.email
in the global configuration with
git config --global user.email "[email protected]"
First of all Big thanks to Adam thomas I used the same Adam's logic for this with a small modification to accept the decimal values.
Note: This will allow digits with only 2 decimal values
Here is my Working Example
HTML
<input type="text" ng-model="salary" valid-number />
Javascript
var app = angular.module('myApp', []);
app.controller('MainCtrl', function($scope) {
});
app.directive('validNumber', function() {
return {
require: '?ngModel',
link: function(scope, element, attrs, ngModelCtrl) {
if(!ngModelCtrl) {
return;
}
ngModelCtrl.$parsers.push(function(val) {
if (angular.isUndefined(val)) {
var val = '';
}
var clean = val.replace(/[^0-9\.]/g, '');
var decimalCheck = clean.split('.');
if(!angular.isUndefined(decimalCheck[1])) {
decimalCheck[1] = decimalCheck[1].slice(0,2);
clean =decimalCheck[0] + '.' + decimalCheck[1];
}
if (val !== clean) {
ngModelCtrl.$setViewValue(clean);
ngModelCtrl.$render();
}
return clean;
});
element.bind('keypress', function(event) {
if(event.keyCode === 32) {
event.preventDefault();
}
});
}
};
});
Your question is not particularly clear, but in case you want to send POST data to a url without using a form, you can use either fsockopen or curl.
Open up terminal and check what java version is currently set in your path variable.
You can do that by typing in your terminal
java -version // this will check your jre version.
javac -version // this will check your compiler version
If this shows incorrect java version but you have installed java 1.8 then you have to set path variable to the newer version of java.
To do that do add the line:
export JAVA_HOME=/path/to/java/jdk1.x
to ~/.bash_profile
(same as /Users/username/.bash_profile
)
Then do this from the terminal to set the new variable
source ~/.bash_profile
Also what's your eclipse.ini set to ?
-Dosgi.requiredJavaVersion=1.7
EDIT:
Please open up terminal and type
find / -name "java" // This should find all folder named java on your file system.
Also how did you install java in the first place ?
Here, Erik explains every way pass an array by reference: https://stackoverflow.com/a/5724184/5090928.
Similarly, you can create an array reference variable like so:
int arr1[] = {1, 2, 3, 4, 5};
int(&arr2)[5] = arr1;
In memory usage and speed.
When you call jsonstr = json.dumps(mydata)
it first creates a full copy of your data in memory and only then you file.write(jsonstr)
it to disk. So this is a faster method but can be a problem if you have a big piece of data to save.
When you call json.dump(mydata, file)
-- without 's', new memory is not used, as the data is dumped by chunks. But the whole process is about 2 times slower.
Source: I checked the source code of json.dump()
and json.dumps()
and also tested both the variants measuring the time with time.time()
and watching the memory usage in htop.
delay() will not do the job. The problem with delay() is it's part of the animation system, and only applies to animation queues.
What if you want to wait before executing something outside of animation??
Use this:
window.setTimeout(function(){
// do whatever you want to do
}, 600);
What happens?: In this scenario it waits 600 miliseconds before executing the code specified within the curly braces.
This helped me a great deal once I figured it out and hope it will help you as well!
IMPORTANT NOTICE: 'window.setTimeout' happens asynchronously. Keep that in mind when writing your code!
public String stripNonValidXMLCharacters(String in) {
StringBuffer out = new StringBuffer(); // Used to hold the output.
char current; // Used to reference the current character.
if (in == null || ("".equals(in))) return ""; // vacancy test.
for (int i = 0; i < in.length(); i++) {
current = in.charAt(i); // NOTE: No IndexOutOfBoundsException caught here; it should not happen.
if ((current == 0x9) ||
(current == 0xA) ||
(current == 0xD) ||
((current >= 0x20) && (current <= 0xD7FF)) ||
((current >= 0xE000) && (current <= 0xFFFD)) ||
((current >= 0x10000) && (current <= 0x10FFFF)))
out.append(current);
}
return out.toString();
}
Step 1: Click on Create new File
Step 2: Enter the folder name that you want, then press /
Step 3: Enter a sample file name. You must enter some text.
Step 4: Click Commit new file to create the folder
Step 5: Your folder is created!
You can iterate over the row data
$('#button').click(function () {
var ids = $.map(table.rows('.selected').data(), function (item) {
return item[0]
});
console.log(ids)
alert(table.rows('.selected').data().length + ' row(s) selected');
});
Demo: Fiddle
Here is the example of a web.config that solve the issue for me. Pay attention on the <binding name="TransportSecurity" messageEncoding="Text" textEncoding="utf-8">
Use something like this -
SELECT DISTINCT COL_NAME FROM myTable WHERE UPPER(COL_NAME) LIKE UPPER('%PriceOrder%')
or
SELECT DISTINCT COL_NAME FROM myTable WHERE LOWER(COL_NAME) LIKE LOWER('%PriceOrder%')
Maven remembers when it didn't find something. The key is "resolution will not be reattempted until the update interval of internal has elapsed or updates are forced ->"
The quick solution is to delete your local "repository" subdirectory for the problem artifact - assuming you have fixed the problem with it. :)
mvn -U
will force update from remote repository - again, assuming you have now populated remote with said artifact.
This took me a while to figure out but here's my answer.
Before using DomDocument I would use file_get_contents to retrieve urls and then process them with string functions. Perhaps not the best way but quick. After being convinced Dom was just as quick I first tried the following:
$dom = new DomDocument('1.0', 'UTF-8');
if ($dom->loadHTMLFile($url) == false) { // read the url
// error message
}
else {
// process
}
This failed spectacularly in preserving UTF-8 encoding despite the proper meta tags, php settings and all the rest of the remedies offered here and elsewhere. Here's what works:
$dom = new DomDocument('1.0', 'UTF-8');
$str = file_get_contents($url);
if ($dom->loadHTML(mb_convert_encoding($str, 'HTML-ENTITIES', 'UTF-8')) == false) {
}
etc. Now everything's right with the world. Hope this helps.
Well, people usually ask this question: Heroku or AWS when starting to deploy something.
My experiment of using both of Heroku & AWS, here is my quick review and comparison:
Heroku
Heroku run bash
(Thanks, MJafar Mash for the advice) but it is kind of limited! You don't have full access!AWS - EC2
AWS Elastic Beanstalk an alternative of Heroku, but cheaper
Elastic Beanstalk was announced as a public beta from 2010; it helps we easier to work with deployment. For detail please go here
Beanstalk is free, the cost you will pay will be for the services you use & number of hours of usage.
I use Elastic Beanstalk for a long time, and I think it can be the replacement of Heroku and cheaper!
Summary
So in my current system, I use Heroku for staging and Beanstalk for production!
In Python 3.x, you need to import urllib.parse.quote
:
>>> import urllib.parse
>>> urllib.parse.quote("châteu", safe='')
'ch%C3%A2teu'
According to Python 2.x urllib
module documentation:
NOTE
The
urllib
module has been split into parts and renamed in Python 3 tourllib.request
,urllib.parse
, andurllib.error
.
To improve on Ryan's answer:
+ (UIImage *)imageWithImage:(UIImage *)image scaledToSize:(CGSize)size {
CGFloat oldWidth = image.size.width;
CGFloat oldHeight = image.size.height;
//You may need to take some retina adjustments into consideration here
CGFloat scaleFactor = (oldWidth > oldHeight) ? width / oldWidth : height / oldHeight;
return [UIImage imageWithCGImage:image.CGImage scale:scaleFactor orientation:UIImageOrientationUp];
}
Another graphical alternative - plot_missing
function from excellent DataExplorer
package:
Docs also points out to the fact that you can save this results for additional analysis with missing_data <- plot_missing(data)
.
The best solution in this case is to normalize your table to have the comma separated values in different rows (First normal form 1NF) http://en.wikipedia.org/wiki/First_normal_form
For that, you can implement a nice Split table valued function in SQL, by using CLR http://bi-tch.blogspot.com/2007/10/sql-clr-net-function-split.html or using plain SQL.
CREATE FUNCTION dbo.Split
(
@RowData nvarchar(2000),
@SplitOn nvarchar(5)
)
RETURNS @RtnValue table
(
Id int identity(1,1),
Data nvarchar(100)
)
AS
BEGIN
Declare @Cnt int
Set @Cnt = 1
While (Charindex(@SplitOn,@RowData)>0)
Begin
Insert Into @RtnValue (data)
Select
Data = ltrim(rtrim(Substring(@RowData,1,Charindex(@SplitOn,@RowData)-1)))
Set @RowData = Substring(@RowData,Charindex(@SplitOn,@RowData)+1,len(@RowData))
Set @Cnt = @Cnt + 1
End
Insert Into @RtnValue (data)
Select Data = ltrim(rtrim(@RowData))
Return
END
Then you can query the normalized output by using cross apply
select distinct a.id_column
from MyTable a cross apply
dbo.Split(A.MyCol,',') b
where b.Data='Cat'
Nobody seems to have mentioned the -t option but that the easiest:
pip install -t <direct directory> <package>
You should be able to use join
, which joins on the index as default. Given your desired result, you must use outer
as the join type.
>>> df1.join(df2, how='outer')
V1 V2
A 1/1/2012 12 15
2/1/2012 14 NaN
3/1/2012 NaN 21
B 1/1/2012 15 24
2/1/2012 8 9
C 1/1/2012 17 NaN
2/1/2012 9 NaN
D 1/1/2012 NaN 7
2/1/2012 NaN 16
Signature: _.join(other, on=None, how='left', lsuffix='', rsuffix='', sort=False) Docstring: Join columns with other DataFrame either on index or on a key column. Efficiently Join multiple DataFrame objects by index at once by passing a list.
JQuery 10.1.2 has a nice show and hide functions that encapsulate the behavior you are talking about. This would save you having to write a new function or keep track of css classes.
$("new").show();
$("new").hide();
Just from reading that i would have never understood that "$@"
expands into a list of separate parameters. Whereas, "$*"
is one parameter consisting of all the parameters added together.
If it still makes no sense do this.
http://www.thegeekstuff.com/2010/05/bash-shell-special-parameters/
Did you try df.groupby('id').head(2)
Ouput generated:
>>> df.groupby('id').head(2)
id value
id
1 0 1 1
1 1 2
2 3 2 1
4 2 2
3 7 3 1
4 8 4 1
(Keep in mind that you might need to order/sort before, depending on your data)
EDIT: As mentioned by the questioner, use df.groupby('id').head(2).reset_index(drop=True)
to remove the multindex and flatten the results.
>>> df.groupby('id').head(2).reset_index(drop=True)
id value
0 1 1
1 1 2
2 2 1
3 2 2
4 3 1
5 4 1
@RequestMapping(value="/add/image", method=RequestMethod.POST)
public ResponseEntity upload(@RequestParam("id") Long id, HttpServletResponse response, HttpServletRequest request)
{
try {
MultipartHttpServletRequest multipartRequest=(MultipartHttpServletRequest)request;
Iterator<String> it=multipartRequest.getFileNames();
MultipartFile multipart=multipartRequest.getFile(it.next());
String fileName=id+".png";
String imageName = fileName;
byte[] bytes=multipart.getBytes();
BufferedOutputStream stream= new BufferedOutputStream(new FileOutputStream("src/main/resources/static/image/book/"+fileName));;
stream.write(bytes);
stream.close();
return new ResponseEntity("upload success", HttpStatus.OK);
} catch (Exception e) {
e.printStackTrace();
return new ResponseEntity("Upload fialed", HttpStatus.BAD_REQUEST);
}
}
I would recomment Pluralsight's tool for creating self-signed-certs: http://blog.pluralsight.com/selfcert-create-a-self-signed-certificate-interactively-gui-or-programmatically-in-net
Make your cert as a .pfx and import it into IIS. And add it as a trusted root cert authority.
Instead of saving it to a file, save it to php://output
Docs:
$objWriter->save('php://output');
This will send it AS-IS to the browser.
You want to add some headersDocs first, like it's common with file downloads, so the browser knows which type that file is and how it should be named (the filename):
// We'll be outputting an excel file
header('Content-type: application/vnd.ms-excel');
// It will be called file.xls
header('Content-Disposition: attachment; filename="file.xls"');
// Write file to the browser
$objWriter->save('php://output');
First do the headers, then the save. For the excel headers see as well the following question: Setting mime type for excel document.
I tried:
import os
os.path.abspath(os.path.join(os.path.dirname(os.path.abspath(inspect.getfile(inspect.currentframe()))), os.pardir))
If you are using, Putty session, then it automatically copies selection. If we have used "set mouse=a" option in vim, selecting using Shift+Mouse drag selects the text automatically. Need to check in X-term.
5 Jan 2021: link update thanks to @Sadap's comment.
Kind of a corollary answer: the people on this site have taken the time to make tables of macros defined for every OS/compiler pair.
For example, you can see that _WIN32
is NOT defined on Windows with Cygwin (POSIX), while it IS defined for compilation on Windows, Cygwin (non-POSIX), and MinGW with every available compiler (Clang, GNU, Intel, etc.).
Anyway, I found the tables quite informative and thought I'd share here.
SELECT
name
FROM
SYSIBM.SYSTABLES
WHERE
type = 'T'
AND
creator = 'MySchema'
AND
name LIKE 'book_%';
and If you want to set proxy for wget you should put these line in your Dockerfile
ENV http_proxy YOUR-PROXY-IP:PORT/
ENV https_proxy YOUR-PROXY-IP:PORT/
ENV all_proxy YOUR-PROXY-IP:PORT/
A JMS topic is the type of destination in a 1-to-many model of distribution. The same published message is received by all consuming subscribers. You can also call this the 'broadcast' model. You can think of a topic as the equivalent of a Subject in an Observer design pattern for distributed computing. Some JMS providers efficiently choose to implement this as UDP instead of TCP. For topic's the message delivery is 'fire-and-forget' - if no one listens, the message just disappears. If that's not what you want, you can use 'durable subscriptions'.
A JMS queue is a 1-to-1 destination of messages. The message is received by only one of the consuming receivers (please note: consistently using subscribers for 'topic client's and receivers for queue client's avoids confusion). Messages sent to a queue are stored on disk or memory until someone picks it up or it expires. So queues (and durable subscriptions) need some active storage management, you need to think about slow consumers.
In most environments, I would argue, topics are the better choice because you can always add additional components without having to change the architecture. Added components could be monitoring, logging, analytics, etc. You never know at the beginning of the project what the requirements will be like in 1 year, 5 years, 10 years. Change is inevitable, embrace it :-)
I think your overflow should be on the outer container. You can also explicitly set a min width for the columns. Like this:
.search-table-outter { overflow-x: scroll; }
th, td { min-width: 200px; }
Fiddle: http://jsfiddle.net/5WsEt/
Password must meet at least 3 out of the following 4 complexity rules,
[at least 1 uppercase character (A-Z) at least 1 lowercase character (a-z) at least 1 digit (0-9) at least 1 special character — do not forget to treat space as special characters too]
at least 10 characters
at most 128 characters
not more than 2 identical characters in a row (e.g., 111 not allowed)
'^(?!.(.)\1{2}) ((?=.[a-z])(?=.[A-Z])(?=.[0-9])|(?=.[a-z])(?=.[A-Z])(?=.[^a-zA-Z0-9])|(?=.[A-Z])(?=.[0-9])(?=.[^a-zA-Z0-9])|(?=.[a-z])(?=.[0-9])(?=.*[^a-zA-Z0-9])).{10,127}$'
(?!.*(.)\1{2})
(?=.[a-z])(?=.[A-Z])(?=.*[0-9])
(?=.[a-z])(?=.[A-Z])(?=.*[^a-zA-Z0-9])
(?=.[A-Z])(?=.[0-9])(?=.*[^a-zA-Z0-9])
(?=.[a-z])(?=.[0-9])(?=.*[^a-zA-Z0-9])
.{10.127}
I had this in VS 2012 where the "Section name" had been changed in a project, and I fixed it by deleting "app.config" in the project, then right-clicking on the project in the "Solution Explorer", selecting "Properties", then "Settings", then making a change to one of the settings, saving, and re-building. This created a new app.config with the correct information.
Just referring to the filename like
df = pd.read_csv("FBI-CRIME11.csv")
generally only works if the file is in the same directory as the script.
If you are using windows, make sure you specify the path to the file as follows:
PATH = "C:\\Users\\path\\to\\file.csv"
Use this in your server.js file
app.use(express.static('public'));
_x000D_
without the directory ( __dirname ) and then within your project folder create a new file and name it public then put all your static files inside it
Any kind of data your computer stores and processes is in its most basic representation a row of bits. The way those bits are interpreted is done through data types. Data types can be primitive or complex. Primitive data types are - for instance - int or double. They have a specific length and a specific way of being interpreted. In the case of an integer, usually the first bit is used for the sign, the others are used for the value.
Complex data types can be combinations of primitive and other complex data types and are called "Class" in Java.
You can define the complex data type PeopleName consisting of two Strings called first and last name. Each String in Java is another complex data type. Strings in return are (probably) implemented using the primitive data type char for which Java knows how many bits they take to store and how to interpret them.
When you create an instance of a data type, you get an object and your computers reserves some memory for it and remembers its location and the name of that instance. An instance of PeopleName in memory will take up the space of the two String variables plus a bit more for bookkeeping. An integer takes up 32 bits in Java.
Complex data types can have methods assigned to them. Methods can perform actions on their arguments or on the instance of the data type you call this method from. If you have two instances of PeopleName called p1 and p2 and you call a method p1.getFirstName(), it usually returns the first name of the first person but not the second person's.
On unix I got that error when using the ~
shortcut for the user directory.
Changing it to /home/user
resolved the error.
Sometimes it may be better to use chrome.storage API. It's better then localStorage because you can:
Here's a simple code demonstrating the use of chrome.storage. Content script gets the url of visited page and timestamp and stores it, popup.js gets it from storage area.
content_script.js
(function () {
var visited = window.location.href;
var time = +new Date();
chrome.storage.sync.set({'visitedPages':{pageUrl:visited,time:time}}, function () {
console.log("Just visited",visited)
});
})();
popup.js
(function () {
chrome.storage.onChanged.addListener(function (changes,areaName) {
console.log("New item in storage",changes.visitedPages.newValue);
})
})();
"Changes" here is an object that contains old and new value for a given key. "AreaName" argument refers to name of storage area, either 'local', 'sync' or 'managed'.
Remember to declare storage permission in manifest.json.
manifest.json
...
"permissions": [
"storage"
],
...
Here's a parallel version for those of you that have very long Strings :-)
int width = 100;
String s = "129018";
CharSequence padded = IntStream.range(0,width)
.parallel()
.map(i->i-(width-s.length()))
.map(i->i<0 ? '0' :s.charAt(i))
.collect(StringBuilder::new, (sb,c)-> sb.append((char)c), (sb1,sb2)->sb1.append(sb2));
There could be many reasons for Index not being used. Even after you specify hints, there are chances Oracle optimizer thinks otherwise and decide not to use Index. You need to go through the EXPLAIN PLAN part and see what is the cost of the statement with INDEX and without INDEX.
Assuming the Oracle uses CBO. Most often, if the optimizer thinks the cost is high with INDEX, even though you specify it in hints, the optimizer will ignore and continue for full table scan. Your first action should be checking DBA_INDEXES to know when the statistics are LAST_ANALYZED. If not analyzed, you can set table, index for analyze.
begin
DBMS_STATS.GATHER_INDEX_STATS ( OWNNAME=>user
, INDNAME=>IndexName);
end;
For table.
begin
DBMS_STATS.GATHER_TABLE_STATS ( OWNNAME=>user
, TABNAME=>TableName);
end;
In extreme cases, you can try setting up the statistics on your own.
Why to annoy the user with three different Dialog Boxes to enter things, why not do all this in one go in a single Dialog and save time, instead of testing the patience of the USER ?
You can add everything in a single Dialog, by putting all the fields on your JPanel
and then adding this JPanel
to your JOptionPane
. Below code can clarify a bit more :
import java.awt.*;
import java.util.*;
import javax.swing.*;
public class AverageExample
{
private double[] marks;
private JTextField[] marksField;
private JLabel resultLabel;
public AverageExample()
{
marks = new double[3];
marksField = new JTextField[3];
marksField[0] = new JTextField(10);
marksField[1] = new JTextField(10);
marksField[2] = new JTextField(10);
}
private void displayGUI()
{
int selection = JOptionPane.showConfirmDialog(
null, getPanel(), "Input Form : "
, JOptionPane.OK_CANCEL_OPTION
, JOptionPane.PLAIN_MESSAGE);
if (selection == JOptionPane.OK_OPTION)
{
for ( int i = 0; i < 3; i++)
{
marks[i] = Double.valueOf(marksField[i].getText());
}
Arrays.sort(marks);
double average = (marks[1] + marks[2]) / 2.0;
JOptionPane.showMessageDialog(null
, "Average is : " + Double.toString(average)
, "Average : "
, JOptionPane.PLAIN_MESSAGE);
}
else if (selection == JOptionPane.CANCEL_OPTION)
{
// Do something here.
}
}
private JPanel getPanel()
{
JPanel basePanel = new JPanel();
//basePanel.setLayout(new BorderLayout(5, 5));
basePanel.setOpaque(true);
basePanel.setBackground(Color.BLUE.darker());
JPanel centerPanel = new JPanel();
centerPanel.setLayout(new GridLayout(3, 2, 5, 5));
centerPanel.setBorder(
BorderFactory.createEmptyBorder(5, 5, 5, 5));
centerPanel.setOpaque(true);
centerPanel.setBackground(Color.WHITE);
JLabel mLabel1 = new JLabel("Enter Marks 1 : ");
JLabel mLabel2 = new JLabel("Enter Marks 2 : ");
JLabel mLabel3 = new JLabel("Enter Marks 3 : ");
centerPanel.add(mLabel1);
centerPanel.add(marksField[0]);
centerPanel.add(mLabel2);
centerPanel.add(marksField[1]);
centerPanel.add(mLabel3);
centerPanel.add(marksField[2]);
basePanel.add(centerPanel);
return basePanel;
}
public static void main(String... args)
{
SwingUtilities.invokeLater(new Runnable()
{
@Override
public void run()
{
new AverageExample().displayGUI();
}
});
}
}
I had the same issue caused by importing the internal version of 'takeUntil' instead of the operators Change
import { takeUntil } from 'rxjs/internal/operators/takeUntil';
to
import { takeUntil } from 'rxjs/operators';
This happen also for other operators
Below is the script to check the OS distribution and create User if not exists and do nothing if user exists.
#!/bin/bash
# Detecting OS Ditribution
if [ -f /etc/os-release ]; then
. /etc/os-release
OS=$NAME
elif type lsb_release >/dev/null 2>&1; then
OS=$(lsb_release -si)
elif [ -f /etc/lsb-release ]; then
. /etc/lsb-release
OS=$DISTRIB_ID
else
OS=$(uname -s)
fi
echo "$OS"
user=$(cat /etc/passwd | egrep -e ansible | awk -F ":" '{ print $1}')
#Adding User based on The OS Distribution
if [[ $OS = *"Red Hat"* ]] || [[ $OS = *"Amazon Linux"* ]] || [[ $OS = *"CentOS"*
]] && [[ "$user" != "ansible" ]];then
sudo useradd ansible
elif [ "$OS" = Ubuntu ] && [ "$user" != "ansible" ]; then
sudo adduser --disabled-password --gecos "" ansible
else
echo "$user is already exist on $OS"
exit
fi
You can pass an Object as the parameter to your filter expression, as described in the API Reference. This object can selectively apply the properties you're interested in, like so:
<input ng-model="search.name">
<input ng-model="search.phone">
<input ng-model="search.secret">
<tr ng-repeat="user in users | filter:{name: search.name, phone: search.phone}">
Here's a Plunker
Heads up...this example works great with AngularJS 1.1.5, but not always as well in 1.0.7. In this example 1.0.7 will initialize with everything filtered out, then work when you start using the inputs. It behaves like the inputs have non-matching values in them, even though they start out blank. If you want to stay on stable releases, go ahead and try this out for your situation, but some scenarios may want to use @maxisam's solution until 1.2.0 is released.
<div id="canvasdiv" style="margin: 5px; height: 100%; width: 100%;">
<canvas id="mycanvas" style="border: 1px solid red;"></canvas>
</div>
<script>
$(function(){
InitContext();
});
function InitContext()
{
var $canvasDiv = $('#canvasdiv');
var canvas = document.getElementById("mycanvas");
canvas.height = $canvasDiv.innerHeight();
canvas.width = $canvasDiv.innerWidth();
}
</script>
Reading between the lines - Is this an innodb database? In which case the actual data is normally stored in that directory under the name ibdata1. This file contains all your tables unless you specifically set up mysql to use one-file-per-table (innodb-file-per-table)
Please use symbol backtick '`' in your front and end of html string, this is so called template literals, now you able to write pure html in multiple lines and assign to variable.
Example >>
var htmlString =
`
<span>Your</span>
<p>HTML</p>
`
Yes the restOfTheUrl
is not returning only required value but we can get the value by using UriTemplate
matching.
I have solved the problem, so here the working solution for the problem:
@RequestMapping("/{id}/**")
public void foo(@PathVariable("id") int id, HttpServletRequest request) {
String restOfTheUrl = (String) request.getAttribute(
HandlerMapping.PATH_WITHIN_HANDLER_MAPPING_ATTRIBUTE);
/*We can use UriTemplate to map the restOfTheUrl*/
UriTemplate template = new UriTemplate("/{id}/{value}");
boolean isTemplateMatched = template.matches(restOfTheUrl);
if(isTemplateMatched) {
Map<String, String> matchTemplate = new HashMap<String, String>();
matchTemplate = template.match(restOfTheUrl);
String value = matchTemplate.get("value");
/*variable `value` will contain the required detail.*/
}
}
That's basically a set of 2 simultaneous equations:
x*y = a
X+y = b
(using the mathematical convention of x and y for the variables to solve and a and b for arbitrary constants).
But the solution involves a quadratic equation (because of the x*y), so depending on the actual values of a and b, there may not be a solution, or there may be multiple solutions.
Jeffrey L Whitledge with ~47000 reputation score recommends usage of nvarchar
Solomon Rutzky with with ~33200 reputation score recommends: Do NOT always use NVARCHAR. That is a very dangerous, and often costly, attitude / approach.
What are the main performance differences between varchar and nvarchar SQL Server data types?
https://www.sqlservercentral.com/articles/disk-is-cheap-orly-4
Both persons of such a high reputation, what does a learning sql server database developer choose?
There are many warnings in answers and comments about performance issues if you are not consistent in choices.
There are comments pro/con nvarchar for performance.
There are comments pro/con varchar for performance.
I have a particular requirement for a table with many hundreds of columns, which in itself is probably unusual ?
I'm choosing varchar to avoid going close to the 8060 byte table record size limit of SQL*server 2012.
Use of nvarchar, for me, goes over this 8060 byte limit.
I'm also thinking that I should match the data types of the related code tables to the data types of the primary central table.
I have seen use of varchar column at this place of work, South Australian Government, by previous experienced database developers, where the table row count is going to be several millions or more (and very few nvarchar columns, if any, in these very large tables), so perhaps the expected data row volumes becomes part of this decision.
@user20877984's answer is excellent. Since they summed it up far better than my previous answer, here is my (posibly still shoddy) attempt at an application of the concept:
Using do.call
in a basic fashion:
powvalues <- list(power=0.9,delta=2)
do.call(power.t.test,powvalues)
Working on a full data set:
# get the example data
df <- data.frame(delta=c(1,1,2,2), power=c(.90,.85,.75,.45))
#> df
# delta power
#1 1 0.90
#2 1 0.85
#3 2 0.75
#4 2 0.45
lapply
the power.t.test
function to each of the rows of specified values:
result <- lapply(
split(df,1:nrow(df)),
function(x) do.call(power.t.test,x)
)
> str(result)
List of 4
$ 1:List of 8
..$ n : num 22
..$ delta : num 1
..$ sd : num 1
..$ sig.level : num 0.05
..$ power : num 0.9
..$ alternative: chr "two.sided"
..$ note : chr "n is number in *each* group"
..$ method : chr "Two-sample t test power calculation"
..- attr(*, "class")= chr "power.htest"
$ 2:List of 8
..$ n : num 19
..$ delta : num 1
..$ sd : num 1
..$ sig.level : num 0.05
..$ power : num 0.85
... ...
This should do the job, no?
<Button Content="Test">
<Button.Background>
<ImageBrush ImageSource="folder/file.PNG"/>
</Button.Background>
</Button>
Another edge-case EF Core scenario.
Check you have a Migrations/YOURNAMEContextModelSnapshot.cs file.
as detailed in - https://docs.microsoft.com/en-us/ef/core/managing-schemas/migrations/#create-a-migration
If you have tried to manually re-create your database by deleting migration.cs files, be careful that your Migrations/*ContextModelSnapshot.cs file still exists.
Without it, your subsequent migrations have no snapshot on which to create the required differences and your new migrations files will look like they are re-creating everything again from scratch, you will then get the existing table error as above.
Look at Compare-Object
Compare-Object $a1 $b1 | ForEach-Object { $_.InputObject }
Or if you would like to know where the object belongs to, then look at SideIndicator:
$a1=@(1,2,3,4,5,8)
$b1=@(1,2,3,4,5,6)
Compare-Object $a1 $b1
I know, this is an old question. But just for the sake of completeness, the lambda version.
Map<String, List<Item>> items = new HashMap<>();
items.computeIfAbsent(key, k -> new ArrayList<>()).add(item);
Maybe a fixed height
and overflow-y: scroll;