Fixing the comparison:
At this point it's a little premature to compare EFS and EBS- the performance of EFS isn't known, nor is its reliability known.
Why would you use S3?
EBS is like the virtual disk of a VM:
Instance storage is:
ephemeral is just another name of root volume when you launch Instance from AMI backed from Amazon EC2 instance store
So Everything will be stored on ephemeral.
if you have launched your instance from AMI backed by EBS volume then your instance does not have ephemeral.
Use the Kafka consumer provided by Kafka :
bin/kafka-console-consumer.sh --bootstrap-server BROKERS --topic TOPIC_NAME
It will display the messages as it will receive it. Add --from-beginning
if you want to start from the beginning.
(Explanation in more details can be found in an archived Microsoft KB article.)
Three things to know:
%1
, %2
, ...Two percent signs with any characters in between them are interpreted as a variable:
echo %myvar%
%%f
Why's that?
For example, if we execute your (simplified) command line
FOR /f %f in ('dir /b .') DO somecommand %f
in a batch file, rule 2 would try to interpret
%f in ('dir /b .') DO somecommand %
as a variable. In order to prevent that, you have to apply rule 3 and escape the %
with an second %
:
FOR /f %%f in ('dir /b .') DO somecommand %%f
Here is another way
$( '#iframe' ).attr( 'src', function () { return $( this )[0].src; } );
Adding to the popular answer to include this error:
"ERROR 1200 (HY000): The server is not configured as slave; fix in config file or with CHANGE MASTER TO",
Replication from slave in one shot:
In one terminal window:
mysql -h <Master_IP_Address> -uroot -p
After connecting,
RESET MASTER;
FLUSH TABLES WITH READ LOCK;
SHOW MASTER STATUS;
The status appears as below: Note that position number varies!
+------------------+----------+--------------+------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+------------------+----------+--------------+------------------+
| mysql-bin.000001 | 98 | your_DB | |
+------------------+----------+--------------+------------------+
Export the dump similar to how he described "using another terminal"!
Exit and connect to your own DB(which is the slave):
mysql -u root -p
The type the below commands:
STOP SLAVE;
Import the Dump as mentioned (in another terminal, of course!) and type the below commands:
RESET SLAVE;
CHANGE MASTER TO
MASTER_HOST = 'Master_IP_Address',
MASTER_USER = 'your_Master_user', // usually the "root" user
MASTER_PASSWORD = 'Your_MasterDB_Password',
MASTER_PORT = 3306,
MASTER_LOG_FILE = 'mysql-bin.000001',
MASTER_LOG_POS = 98; // In this case
Once logged, set the server_id parameter (usually, for new / non-replicated DBs, this is not set by default),
set global server_id=4000;
Now, start the slave.
START SLAVE;
SHOW SLAVE STATUS\G;
The output should be the same as he described.
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Note: Once replicated, the master and slave share the same password!
You are trying to insert data that is larger than allowed for the column logo
.
Use following data types as per your need
TINYBLOB : maximum length of 255 bytes
BLOB : maximum length of 65,535 bytes
MEDIUMBLOB : maximum length of 16,777,215 bytes
LONGBLOB : maximum length of 4,294,967,295 bytes
Use LONGBLOB
to avoid this exception.
You can also use the redirection operator <>
to open the file to read and write:
sed 's/foo/bar/g' file 1<> file
See it live:
$ cat file
hello
i am here # see "here"
$ sed 's/here/away/' file 1<> file # Run the `sed` command
$ cat file
hello
i am away # this line is changed now
From Bash Reference Manual ? 3.6.10 Opening File Descriptors for Reading and Writing:
The redirection operator
[n]<>word
causes the file whose name is the expansion of word to be opened for both reading and writing on file descriptor n, or on file descriptor 0 if n is not specified. If the file does not exist, it is created.
There are several correct answers here, but I wanted to point out that for new entire directories, 'git add path'
will NOT work. So if you have a bunch of new files in untracked-path and do this:
git add untracked-path
git stash "temp stash"
this will stash with the following message:
Saved working directory and index state On master: temp stash
warning: unable to rmdir untracked-path: Directory not empty
and if untracked-path is the only path you're stashing, the stash "temp stash" will be an empty stash. Correct way is to add the entire path, not just the directory name (i.e. end the path with a '/'):
git add untracked-path/
git stash "temp stash"
git checkout -b <branch-name> <sha1-of-commit>
a simple timestamp formatter in pure JS with custom patterns support and locale-aware, using Intl.RelativeTimeFormat
some formatting examples
/** delta: 1234567890, @locale: 'en-US', @style: 'long' */
/* D~ h~ m~ s~ */
14 days 6 hours 56 minutes 7 seconds
/* D~ h~ m~ s~ f~ */
14 days 6 hours 56 minutes 7 seconds 890
/* D#"d" h#"h" m#"m" s#"s" f#"ms" */
14d 6h 56m 7s 890ms
/* D,h:m:s.f */
14,06:56:07.890
/* D~, h:m:s.f */
14 days, 06:56:07.890
/* h~ m~ s~ */
342 hours 56 minutes 7 seconds
/* s~ m~ h~ D~ */
7 seconds 56 minutes 6 hours 14 days
/* up D~, h:m */
up 14 days, 06:56
the code & test
/**
Init locale formatter:
timespan.locale(@locale, @style)
Example:
timespan.locale('en-US', 'long');
timespan.locale('es', 'narrow');
Format time delta:
timespan.format(@pattern, @milliseconds)
@pattern tokens:
D: days, h: hours, m: minutes, s: seconds, f: millis
@pattern token extension:
h => '0'-padded value,
h# => raw value,
h~ => locale formatted value
Example:
timespan.format('D~ h~ m~ s~ f "millis"', 1234567890);
output: 14 days 6 hours 56 minutes 7 seconds 890 millis
NOTES:
* milliseconds unit have no locale translation
* may encounter declension issues for some locales
* use quoted text for raw inserts
*/
const timespan = (() => {
let rtf, tokensRtf;
const
tokens = /[Dhmsf][#~]?|"[^"]*"|'[^']*'/g,
map = [
{t: [['D', 1], ['D#'], ['D~', 'day']], u: 86400000},
{t: [['h', 2], ['h#'], ['h~', 'hour']], u: 3600000},
{t: [['m', 2], ['m#'], ['m~', 'minute']], u: 60000},
{t: [['s', 2], ['s#'], ['s~', 'second']], u: 1000},
{t: [['f', 3], ['f#'], ['f~']], u: 1}
],
locale = (value, style = 'long') => {
try {
rtf = new Intl.RelativeTimeFormat(value, {style});
} catch (e) {
if (rtf) throw e;
return;
}
const h = rtf.format(1, 'hour').split(' ');
tokensRtf = new Set(rtf.format(1, 'day').split(' ')
.filter(t => t != 1 && h.indexOf(t) > -1));
return true;
},
fallback = (t, u) => u + ' ' + t.fmt + (u == 1 ? '' : 's'),
mapper = {
number: (t, u) => (u + '').padStart(t.fmt, '0'),
string: (t, u) => rtf ? rtf.format(u, t.fmt).split(' ')
.filter(t => !tokensRtf.has(t)).join(' ')
.trim().replace(/[+-]/g, '') : fallback(t, u),
},
replace = (out, t) => out[t] || t.slice(1, t.length - 1),
format = (pattern, value) => {
if (typeof pattern !== 'string')
throw Error('invalid pattern');
if (!Number.isFinite(value))
throw Error('invalid value');
if (!pattern)
return '';
const out = {};
value = Math.abs(value);
pattern.match(tokens)?.forEach(t => out[t] = null);
map.forEach(m => {
let u = null;
m.t.forEach(t => {
if (out[t.token] !== null)
return;
if (u === null) {
u = Math.floor(value / m.u);
value %= m.u;
}
out[t.token] = '' + (t.fn ? t.fn(t, u) : u);
})
});
return pattern.replace(tokens, replace.bind(null, out));
};
map.forEach(m => m.t = m.t.map(t => ({
token: t[0], fmt: t[1], fn: mapper[typeof t[1]]
})));
locale('en');
return {format, locale};
})();
/************************** test below *************************/
const
cfg = {
locale: 'en,de,nl,fr,it,es,pt,ro,ru,ja,kor,zh,th,hi',
style: 'long,narrow'
},
el = id => document.getElementById(id),
locale = el('locale'), loc = el('loc'), style = el('style'),
fd = new Date(), td = el('td'), fmt = el('fmt'),
run = el('run'), out = el('out'),
test = () => {
try {
const tv = new Date(td.value);
if (isNaN(tv)) throw Error('invalid "datetime2" value');
timespan.locale(loc.value || locale.value, style.value);
const delta = fd.getTime() - tv.getTime();
out.innerHTML = timespan.format(fmt.value, delta);
} catch (e) { out.innerHTML = e.message; }
};
el('fd').innerText = el('td').value = fd.toISOString();
el('fmt').value = 'D~ h~ m~ s~ f~ "ms"';
for (const [id, value] of Object.entries(cfg)) {
const elm = el(id);
value.split(',').forEach(i => elm.innerHTML += `<option>${i}</option>`);
}
_x000D_
i {color:green}
_x000D_
locale: <select id="locale"></select>
custom: <input id="loc" style="width:8em"><br>
style: <select id="style"></select><br>
datetime1: <i id="fd"></i><br>
datetime2: <input id="td"><br>
pattern: <input id="fmt">
<button id="run" onclick="test()">test</button><br><br>
<i id="out"></i>
_x000D_
I am currently working on phpDataMapper, which is an ORM designed to have simple syntax like Ruby's Datamapper project. It's still in early development as well, but it works great.
"They can make deleting records more cumbersome - you can't delete the "master" record where there are records in other tables where foreign keys would violate that constraint."
It's important to remember that the SQL standard defines actions that are taken when a foreign key is deleted or updated. The ones I know of are:
ON DELETE RESTRICT
- Prevents any rows in the other table that have keys in this column from being deleted. This is what Ken Ray described above.ON DELETE CASCADE
- If a row in the other table is deleted, delete any rows in this table that reference it.ON DELETE SET DEFAULT
- If a row in the other table is deleted, set any foreign keys referencing it to the column's default.ON DELETE SET NULL
- If a row in the other table is deleted, set any foreign keys referencing it in this table to null.ON DELETE NO ACTION
- This foreign key only marks that it is a foreign key; namely for use in OR mappers.These same actions also apply to ON UPDATE
.
The default seems to depend on which sql server you're using.
One way is to use assert
:
def myFunction(a,b,c):
"This is an example function I'd like to check arguments of"
assert isinstance(a, int), 'a should be an int'
# or if you want to allow whole number floats: assert int(a) == a
assert b > 0 and b < 10, 'b should be betwen 0 and 10'
assert isinstance(c, str) and c, 'c should be a non-empty string'
If this is something you'll need to do often...then you may want to denormalize the relationship between tables A and B.
For example, on insert to table B, you could write zero or more entries to a juncion table mapping B to A based on partial mapping. Similarly, changes to either table could update this association.
This all depends on how frequently tables A and B are modified. If they are fairly static, then taking a hit on INSERT is less painful then repeated hits on SELECT.
Making a class static just prevents people from trying to make an instance of it. If all your class has are static members it is a good practice to make the class itself static.
You can use this VSCode Extension called Reload
4 spaces do the trick even inside definition list:
Endpoint
: `/listAgencies`
Method
: `GET`
Arguments
: * `level` - bla-bla.
* `withDisabled` - should we include disabled `AGENT`s.
* `userId` - bla-bla.
I am documenting API using BitBucket Wiki and Markdown proprietary extension for definition list is most pleasing (MD's table syntax is awful, imaging multiline and embedding requirements...).
I think your question has already been answered more than adequately, but it might be useful to point out explicitly that given a function pointer
void (*pf)(int foo, int bar);
the two calls
pf(1, 0);
(*pf)(1, 0);
are exactly equivalent in every way by definition. The choice of which to use is up to you, although it's a good idea to be consistent. For a long time, I preferred (*pf)(1, 0)
because it seemed to me that it better reflected the type of pf
, however in the last few years I've switched to pf(1, 0)
.
Try below code:
$(document).ready(function(){
$('#about').css({'background-color':'black'});
});
Let's get pedantic, because there are differences that can actually affect your code's behavior. Much of the following is taken from comments made to an "Old New Thing" article.
Sometimes the memory returned by the new operator will be initialized, and sometimes it won't depending on whether the type you're newing up is a POD (plain old data), or if it's a class that contains POD members and is using a compiler-generated default constructor.
Assume:
struct A { int m; }; // POD
struct B { ~B(); int m; }; // non-POD, compiler generated default ctor
struct C { C() : m() {}; ~C(); int m; }; // non-POD, default-initialising m
In a C++98 compiler, the following should occur:
new A
- indeterminate valuenew A()
- zero-initialize
new B
- default construct (B::m is uninitialized)
new B()
- default construct (B::m is uninitialized)
new C
- default construct (C::m is zero-initialized)
new C()
- default construct (C::m is zero-initialized)In a C++03 conformant compiler, things should work like so:
new A
- indeterminate valuenew A()
- value-initialize A, which is zero-initialization since it's a POD.
new B
- default-initializes (leaves B::m uninitialized)
new B()
- value-initializes B which zero-initializes all fields since its default ctor is compiler generated as opposed to user-defined.
new C
- default-initializes C, which calls the default ctor.
new C()
- value-initializes C, which calls the default ctor.So in all versions of C++ there's a difference between new A
and new A()
because A is a POD.
And there's a difference in behavior between C++98 and C++03 for the case new B()
.
This is one of the dusty corners of C++ that can drive you crazy. When constructing an object, sometimes you want/need the parens, sometimes you absolutely cannot have them, and sometimes it doesn't matter.
Once you have put the values into the JSONObject then put the JSONObject into the JSONArray staright after.
Something like this maybe:
jsonObj.put("value1", 1);
jsonObj.put("value2", 900);
jsonObj.put("value3", 1368349);
jsonArray.put(jsonObj);
Then create new JSONObject, put the other values into it and add it to the JSONArray:
jsonObj.put("value1", 2);
jsonObj.put("value2", 1900);
jsonObj.put("value3", 136856);
jsonArray.put(jsonObj);
ATTENTION! the chosen answer contains a bug (Jac's answer).
if you have more than one cookie (very likely..) and the cookie you are retrieving is the first on the list, it doesn't set the variable "end" and therefore it will return the entire string of characters following the "cookieName=" within the document.cookie string!
here is a revised version of that function:
function getCookie( name ) {
var dc,
prefix,
begin,
end;
dc = document.cookie;
prefix = name + "=";
begin = dc.indexOf("; " + prefix);
end = dc.length; // default to end of the string
// found, and not in first position
if (begin !== -1) {
// exclude the "; "
begin += 2;
} else {
//see if cookie is in first position
begin = dc.indexOf(prefix);
// not found at all or found as a portion of another cookie name
if (begin === -1 || begin !== 0 ) return null;
}
// if we find a ";" somewhere after the prefix position then "end" is that position,
// otherwise it defaults to the end of the string
if (dc.indexOf(";", begin) !== -1) {
end = dc.indexOf(";", begin);
}
return decodeURI(dc.substring(begin + prefix.length, end) ).replace(/\"/g, '');
}
When is a github repository not empty, like .gitignore and license
Use pull --allow-unrelated-histories and push --force-with-lease
Use commands
git init
git add .
git commit -m "initial commit"
git remote add origin https://github.com/...
git pull origin master --allow-unrelated-histories
git push --force-with-lease
My fastest function would be:
function newFilledArray(len, val) {
var a = [];
while(len--){
a.push(val);
}
return a;
}
var st = (new Date()).getTime();
newFilledArray(1000000, 0)
console.log((new Date()).getTime() - st); // returned 63, 65, 62 milliseconds
Using the native push and shift to add items to the array is much faster (about 10 times) than declaring the array scope and referencing each item to set it's value.
fyi: I consistently get faster times with the first loop, which is counting down, when running this in firebug (firefox extension).
var a = [];
var len = 1000000;
var st = (new Date()).getTime();
while(len){
a.push(0);
len -= 1;
}
console.log((new Date()).getTime() - st); // returned 863, 894, 875 milliseconds
st = (new Date()).getTime();
len = 1000000;
a = [];
for(var i = 0; i < len; i++){
a.push(0);
}
console.log((new Date()).getTime() - st); // returned 1155, 1179, 1163 milliseconds
I'm interested to know what T.J. Crowder makes of that ? :-)
I have created step by step instructions on how to do this as I also was very confused about how to get this working.
How to make a self extracting archive that runs your setup.exe with 7zip -sfx switch
Here are the steps.
To make this easy create a folder c:\Install. This is where we will copy all the required files.
You need to download 7zSD.sfx
7zSD.sfx
in the bin
folder.I would recommend using NotePad++ to edit this text file as you will need to encode in UTF-8, the following instructions are using notepad++.
Enter something like this:
;!@Install@!UTF-8!
Title="SOFTWARE v1.0.0.0"
BeginPrompt="Do you want to install SOFTWARE v1.0.0.0?"
RunProgram="setup.exe"
;!@InstallEnd@!
Edit this replacing [SOFTWARE v1.0.0.0] with your product name. Notes on the parameters and options for the setup file are here.
You should now have a folder "c:\Install" with the following 3 files:
These instructions I found on the web but nowhere did it explain any of the 4 steps above.
In the command window type the following
cd \
cd Install
copy /b 7zSD.sfx + config.txt + Installer.7z MyInstaller.exe
Look in c:\Install and you will now see you have a MyInstaller.exe
Double click on MyInstaller.exe and it will prompt with your message. Click OK and the setup.exe will run.
Now that you have this working in your c:\Install directory I would create an "Install.bat" file and put the copy script in it.
copy /b 7zSD.sfx + config.txt + Installer.7z MyInstaller.exe
Now you can just edit and run the Install.bat every time you need to rebuild a new version of you deployment package.
Example with IHttpActionResult
in ApiController
.
[HttpGet]
[Route("file/{id}/")]
public IHttpActionResult GetFileForCustomer(int id)
{
if (id == 0)
return BadRequest();
var file = GetFile(id);
IHttpActionResult response;
HttpResponseMessage responseMsg = new HttpResponseMessage(HttpStatusCode.OK);
responseMsg.Content = new ByteArrayContent(file.SomeData);
responseMsg.Content.Headers.ContentDisposition = new System.Net.Http.Headers.ContentDispositionHeaderValue("attachment");
responseMsg.Content.Headers.ContentDisposition.FileName = file.FileName;
responseMsg.Content.Headers.ContentType = new MediaTypeHeaderValue("application/pdf");
response = ResponseMessage(responseMsg);
return response;
}
If you don't want to download the PDF and use a browsers built in PDF viewer instead remove the following two lines:
responseMsg.Content.Headers.ContentDisposition = new System.Net.Http.Headers.ContentDispositionHeaderValue("attachment");
responseMsg.Content.Headers.ContentDisposition.FileName = file.FileName;
The top answer is flawed in my opinion. Hopefully, no one is mass importing all of pandas into their namespace with from pandas import *
. Also, the map
method should be reserved for those times when passing it a dictionary or Series. It can take a function but this is what apply
is used for.
So, if you must use the above approach, I would write it like this
df["A1"], df["A2"] = zip(*df["a"].apply(calculate))
There's actually no reason to use zip here. You can simply do this:
df["A1"], df["A2"] = calculate(df['a'])
This second method is also much faster on larger DataFrames
df = pd.DataFrame({'a': [1,2,3] * 100000, 'b': [2,3,4] * 100000})
DataFrame created with 300,000 rows
%timeit df["A1"], df["A2"] = calculate(df['a'])
2.65 ms ± 92.4 µs per loop (mean ± std. dev. of 7 runs, 100 loops each)
%timeit df["A1"], df["A2"] = zip(*df["a"].apply(calculate))
159 ms ± 5.24 ms per loop (mean ± std. dev. of 7 runs, 10 loops each)
60x faster than zip
Apply is generally not much faster than iterating over a Python list. Let's test the performance of a for-loop to do the same thing as above
%%timeit
A1, A2 = [], []
for val in df['a']:
A1.append(val**2)
A2.append(val**3)
df['A1'] = A1
df['A2'] = A2
298 ms ± 7.14 ms per loop (mean ± std. dev. of 7 runs, 1 loop each)
So this is twice as slow which isn't a terrible performance regression, but if we cythonize the above, we get much better performance. Assuming, you are using ipython:
%load_ext cython
%%cython
cpdef power(vals):
A1, A2 = [], []
cdef double val
for val in vals:
A1.append(val**2)
A2.append(val**3)
return A1, A2
%timeit df['A1'], df['A2'] = power(df['a'])
72.7 ms ± 2.16 ms per loop (mean ± std. dev. of 7 runs, 10 loops each)
You can get even greater speed improvements if you use the direct vectorized operations.
%timeit df['A1'], df['A2'] = df['a'] ** 2, df['a'] ** 3
5.13 ms ± 320 µs per loop (mean ± std. dev. of 7 runs, 100 loops each)
This takes advantage of NumPy's extremely fast vectorized operations instead of our loops. We now have a 30x speedup over the original.
apply
The above example should clearly show how slow apply
can be, but just so its extra clear let's look at the most basic example. Let's square a Series of 10 million numbers with and without apply
s = pd.Series(np.random.rand(10000000))
%timeit s.apply(calc)
3.3 s ± 57.4 ms per loop (mean ± std. dev. of 7 runs, 1 loop each)
Without apply is 50x faster
%timeit s ** 2
66 ms ± 2 ms per loop (mean ± std. dev. of 7 runs, 10 loops each)
You are trying to execute an asynchronous function
in a synchronous way, which is unfortunately not possible in Javascript
.
As you guessed correctly, the roomId=results
.... is executed when the loading from the DB completes, which is done asynchronously, so AFTER the resto of your code is completed.
Look at this article, it talks about .insert and not .find
, but the idea is the same : http://metaduck.com/01-asynchronous-iteration-patterns.html
SELECT group,subGroup,COUNT(*) FROM tablename GROUP BY group,subgroup
for i in range (1, len(list))
try:
print (list[i])
except ValueError:
print("Error Value.")
except indexError:
print("Erorr index")
except :
print('error ')
Try using this code for v3:
gMap = new google.maps.Map(document.getElementById('map'));
gMap.setZoom(13); // This will trigger a zoom_changed on the map
gMap.setCenter(new google.maps.LatLng(37.4419, -122.1419));
gMap.setMapTypeId(google.maps.MapTypeId.ROADMAP);
In spanish keyboard without changing anything I can make a comment with the keys:
cmd + -
OR
cmd + alt + -
This works because in english keyboard / is located at the same place than - on a spanish keyboard
In a code compiled with Java 7 but potentially running in a higher java version, it seems useful to detect presence of java.util.Base64
class and use the approach best for given JVM mentioned in other questions here.
I used this code:
private static final Method JAVA_UTIL_BASE64_GETENCODER;
static {
Method getEncoderMethod;
try {
final Class<?> base64Class = Class.forName("java.util.Base64");
getEncoderMethod = base64Class.getMethod("getEncoder");
} catch (ClassNotFoundException | NoSuchMethodException e) {
getEncoderMethod = null;
}
JAVA_UTIL_BASE64_GETENCODER = getEncoderMethod;
}
static String base64EncodeToString(String s) {
final byte[] bytes = s.getBytes(StandardCharsets.ISO_8859_1);
if (JAVA_UTIL_BASE64_GETENCODER == null) {
// Java 7 and older // TODO: remove this branch after switching to Java 8
return DatatypeConverter.printBase64Binary(bytes);
} else {
// Java 8 and newer
try {
final Object encoder = JAVA_UTIL_BASE64_GETENCODER.invoke(null);
final Class<?> encoderClass = encoder.getClass();
final Method encodeMethod = encoderClass.getMethod("encode", byte[].class);
final byte[] encodedBytes = (byte[]) encodeMethod.invoke(encoder, bytes);
return new String(encodedBytes);
} catch (NoSuchMethodException | IllegalAccessException | InvocationTargetException e) {
throw new IllegalStateException(e);
}
}
}
This is not mentioned in you post but I suspect you are initiating an SSL connection from the browser to Apache, where VirtualHosts are configured, and Apache does a revese proxy to your Tomcat.
There is a serious bug in (some versions ?) of IE that sends the 'wrong' host information in an SSL connection (see EDIT below) and confuses the Apache VirtualHosts. In short the server name presented is the one of the reverse DNS resolution of the IP, not the one in the URL.
The workaround is to have one IP address per SSL virtual hosts/server name. Is short, you must end up with something like
1 server name == 1 IP address == 1 certificate == 1 Apache Virtual Host
EDIT
Though the conclusion is correct, the identification of the problem is better described here http://en.wikipedia.org/wiki/Server_Name_Indication
[sendmail]
smtp_server=smtp.gmail.com
smtp_port=25
error_logfile=error.log
debug_logfile=debug.log
[email protected]
auth_password=gmailpassword
[email protected]
need authenticate username and password of mail then only once can successfully send mail from localhost
Ideally, you would create a method on the choice object that found itself in votes, or create a relationship between the models. A template tag that performed the dictionary lookup would work, too.
here the link to webreports version 12 https://www.nuget.org/packages/Microsoft.ReportViewer.WebForms.v12/12.0.0?_src=template
after the package installed
on your toolbox browse the dll reference it to bin then that's it run the visual studio
Create an abstract method, and have each of your enumeration values override it. Since you know the opposite while you're creating it, there's no need to dynamically generate or create it.
It doesn't read nicely though; perhaps a switch
would be more manageable?
public enum Direction {
NORTH(1) {
@Override
public Direction getOppositeDirection() {
return Direction.SOUTH;
}
},
SOUTH(-1) {
@Override
public Direction getOppositeDirection() {
return Direction.NORTH;
}
},
EAST(-2) {
@Override
public Direction getOppositeDirection() {
return Direction.WEST;
}
},
WEST(2) {
@Override
public Direction getOppositeDirection() {
return Direction.EAST;
}
};
Direction(int code){
this.code=code;
}
protected int code;
public int getCode() {
return this.code;
}
public abstract Direction getOppositeDirection();
}
simplify @Vikas version
@Override
public boolean onPrepareOptionsMenu (Menu menu) {
menu.findItem(R.id.example_foobar).setEnabled(isFinalized);
return true;
}
You need to actually request the Location permission at runtime (notice the comments in your code stating this).
Here is tested and working code to request the Location permission.
Be sure to import android.Manifest
:
import android.Manifest;
Then put this code in the Activity:
public static final int MY_PERMISSIONS_REQUEST_LOCATION = 99;
public boolean checkLocationPermission() {
if (ContextCompat.checkSelfPermission(this,
Manifest.permission.ACCESS_FINE_LOCATION)
!= PackageManager.PERMISSION_GRANTED) {
// Should we show an explanation?
if (ActivityCompat.shouldShowRequestPermissionRationale(this,
Manifest.permission.ACCESS_FINE_LOCATION)) {
// Show an explanation to the user *asynchronously* -- don't block
// this thread waiting for the user's response! After the user
// sees the explanation, try again to request the permission.
new AlertDialog.Builder(this)
.setTitle(R.string.title_location_permission)
.setMessage(R.string.text_location_permission)
.setPositiveButton(R.string.ok, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
//Prompt the user once explanation has been shown
ActivityCompat.requestPermissions(MainActivity.this,
new String[]{Manifest.permission.ACCESS_FINE_LOCATION},
MY_PERMISSIONS_REQUEST_LOCATION);
}
})
.create()
.show();
} else {
// No explanation needed, we can request the permission.
ActivityCompat.requestPermissions(this,
new String[]{Manifest.permission.ACCESS_FINE_LOCATION},
MY_PERMISSIONS_REQUEST_LOCATION);
}
return false;
} else {
return true;
}
}
@Override
public void onRequestPermissionsResult(int requestCode,
String permissions[], int[] grantResults) {
switch (requestCode) {
case MY_PERMISSIONS_REQUEST_LOCATION: {
// If request is cancelled, the result arrays are empty.
if (grantResults.length > 0
&& grantResults[0] == PackageManager.PERMISSION_GRANTED) {
// permission was granted, yay! Do the
// location-related task you need to do.
if (ContextCompat.checkSelfPermission(this,
Manifest.permission.ACCESS_FINE_LOCATION)
== PackageManager.PERMISSION_GRANTED) {
//Request location updates:
locationManager.requestLocationUpdates(provider, 400, 1, this);
}
} else {
// permission denied, boo! Disable the
// functionality that depends on this permission.
}
return;
}
}
}
Then call the checkLocationPermission()
method in onCreate()
:
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//.........
checkLocationPermission();
}
You can then use onResume()
and onPause()
exactly as it is in the question.
Here is a condensed version that is a bit more clean:
@Override
protected void onResume() {
super.onResume();
if (ContextCompat.checkSelfPermission(this,
Manifest.permission.ACCESS_FINE_LOCATION)
== PackageManager.PERMISSION_GRANTED) {
locationManager.requestLocationUpdates(provider, 400, 1, this);
}
}
@Override
protected void onPause() {
super.onPause();
if (ContextCompat.checkSelfPermission(this,
Manifest.permission.ACCESS_FINE_LOCATION)
== PackageManager.PERMISSION_GRANTED) {
locationManager.removeUpdates(this);
}
}
Your example code is wrong. This works:
import datetime
datetime.datetime.strptime("21/12/2008", "%d/%m/%Y").strftime("%Y-%m-%d")
The call to strptime() parses the first argument according to the format specified in the second, so those two need to match. Then you can call strftime() to format the result into the desired final format.
Another scenario, that was not yet mentioned here, that caused this error is an API that receives Pageable
(or Sort
) and passes it, as is, to the JPA repository when calling the API from Swagger.
Swagger default value for the Pageable
parameter is this:
{
"page": 0,
"size": 0,
"sort": [
"string"
]
}
Notice the "string"
there which is a property that does exist. Running the API without deleting or changing it will cause org.springframework.data.mapping.PropertyReferenceException: No property string found for type ...
There doesn't seem to be justify-self
, but you can achieve similar result setting appropriate margin
to auto
¹. E. g. for flex-direction: row
(default) you should set margin-right: auto
to align the child to the left.
.container {_x000D_
height: 100px;_x000D_
border: solid 10px skyblue;_x000D_
_x000D_
display: flex;_x000D_
justify-content: flex-end;_x000D_
}_x000D_
.block {_x000D_
width: 50px;_x000D_
background: tomato;_x000D_
}_x000D_
.justify-start {_x000D_
margin-right: auto;_x000D_
}
_x000D_
<div class="container">_x000D_
<div class="block justify-start"></div>_x000D_
<div class="block"></div>_x000D_
</div>
_x000D_
¹ This behaviour is defined by the Flexbox spec.
If you use numpy
, this is easy:
slice = arr[:2,:2]
or if you want the 0's,
slice = arr[0:2,0:2]
You'll get the same result.
*note that slice
is actually the name of a builtin-type. Generally, I would advise giving your object a different "name".
Another way, if you're working with lists of lists*:
slice = [arr[i][0:2] for i in range(0,2)]
(Note that the 0's here are unnecessary: [arr[i][:2] for i in range(2)]
would also work.).
What I did here is that I take each desired row 1 at a time (arr[i]
). I then slice the columns I want out of that row and add it to the list that I'm building.
If you naively try: arr[0:2]
You get the first 2 rows which if you then slice again arr[0:2][0:2]
, you're just slicing the first two rows over again.
*This actually works for numpy arrays too, but it will be slow compared to the "native" solution I posted above.
You can pass the container by reference in order to modify it in the function. What other answers haven’t addressed is that std::vector
does not have a push_front
member function. You can use the insert()
member function on vector
for O(n) insertion:
void do_something(int el, std::vector<int> &arr){
arr.insert(arr.begin(), el);
}
Or use std::deque
instead for amortised O(1) insertion:
void do_something(int el, std::deque<int> &arr){
arr.push_front(el);
}
IOError: [Errno 13] Permission denied: 'juliodantas2015.json'
tells you everything you need to know: though you successfully made your python program executable with your chmod
, python can't open that juliodantas2015.json'
file for writing. You probably don't have the rights to create new files in the folder you're currently in.
After search a lot, it was my best shot:
If you have a lot of data and needs a compact and elegant script, try it: SSMS Tools Pack
It generates a union all select statements to insert items into target tables and handle transactions pretty well.
You should use better authentication with open keys. In these case you need no password and no expect.
If you want it with expect
, use this script (see answer Automate scp file transfer using a shell script ):
#!/usr/bin/expect -f
# connect via scp
spawn scp "[email protected]:/home/santhosh/file.dmp" /u01/dumps/file.dmp
#######################
expect {
-re ".*es.*o.*" {
exp_send "yes\r"
exp_continue
}
-re ".*sword.*" {
exp_send "PASSWORD\r"
}
}
interact
Also, you can use pexpect
(python module):
def doScp(user,password, host, path, files):
fNames = ' '.join(files)
print fNames
child = pexpect.spawn('scp %s %s@%s:%s' % (fNames, user, host,path))
print 'scp %s %s@%s:%s' % (fNames, user, host,path)
i = child.expect(['assword:', r"yes/no"], timeout=30)
if i == 0:
child.sendline(password)
elif i == 1:
child.sendline("yes")
child.expect("assword:", timeout=30)
child.sendline(password)
data = child.read()
print data
child.close()
The base dn is dc=example,dc=com
.
I don't know about openca, but I will try this answer since you got very little traffic so far.
A base dn is the point from where a server will search for users. So I would try to simply use admin
as a login name.
If openca behaves like most ldap aware applications, this is what is going to happen :
admin
will be done by the server starting at the base dn (dc=example,dc=com
).cn=admin,dc=example,dc=com
) will be used to bind with the supplied password.Getting step 1 right is the hardest part, but mostly because we don't get to do it often. Things you have to look out for in your configuraiton file are :
dn
your application will use to bind to the ldap server. This happens at application startup, before any user comes to authenticate. You will have to supply a full dn, maybe something like cn=admin,dc=example,dc=com
.objectClass
for your admin
user. It will be either inetOrgPerson
or user
. There will be others like top
, you can ignore them. In your openca configuration, there should be a string like (objectClass=inetOrgPerson)
. Whatever it is, make sure it matches your admin user's object Class. You can specify two object class with this search filter (|(objectClass=inetOrgPerson)(objectClass=user))
. Download an LDAP Browser, such as Apache's Directory Studio. Connect using your application's credentials, so you will see what your application sees.
If your array is populated through an SQL Query consider reversing the result in MySQL, ie :
SELECT * FROM model_input order by creation_date desc
In my case with Angular2 and rxjs, it worked with:
import {EmptyObservable} from 'rxjs/observable/EmptyObservable';
...
return new EmptyObservable();
...
The new version 2.4 of Apache HTTP Server has a module called mod_proxy_wstunnel which is a websocket proxy.
http://httpd.apache.org/docs/2.4/mod/mod_proxy_wstunnel.html
A handy post explaining several mis-understandings about this:
Don't Call The Destructor explicitly
This covers several misconceptions about how the destructor works. Calling it explicitly will not actually destroy your variable, according to the PHP5 doc:
PHP 5 introduces a destructor concept similar to that of other object-oriented languages, such as C++. The destructor method will be called as soon as there are no other references to a particular object, or in any order during the shutdown sequence.
The post above does state that setting the variable to null can work in some cases, as long as nothing else is pointing to the allocated memory.
The identity
section goes under the system.web
section, not under authentication
:
<system.web>
<authentication mode="Windows"/>
<identity impersonate="true" userName="foo" password="bar"/>
</system.web>
Since Oracle inserted some md5hash in their download links, one cannot automatically assemble a download link for command line.
So I tinkered some nasty bash command line to get the latest jdk download link, download it and directly install via rpm. For all who are interested:
wget -q http://www.oracle.com/technetwork/java/javase/downloads/index.html -O ./index.html && grep -Eoi ']+>' index.html | grep -Eoi '/technetwork/java/javase/downloads/jdk8-downloads-[0-9]+.html' | (head -n 1) | awk '{print "http://www.oracle.com"$1}' | xargs wget --no-cookies --header "Cookie: gpw_e24=xxx; oraclelicense=accept-securebackup-cookie;" -O index.html -q && grep -Eoi '"filepath":"[^"]+jdk-8u[0-9]+-linux-x64.rpm"' index.html | grep -Eoi 'http:[^"]+' | xargs wget --no-cookies --header "Cookie: gpw_e24=xxx; oraclelicense=accept-securebackup-cookie;" -q -O ./jdk8.rpm && sudo rpm -i ./jdk8.rpm
The bold part should be replaced by the package of your liking.
const keys = Array(n).keys();
[...Array.from(keys)].forEach(callback);
in Typescript
You can add a custom task to do this. Here is a basic custom task for Python.
{
"version": "0.1.0",
"command": "c:\\Python34\\python",
"args": ["app.py"],
"problemMatcher": {
"fileLocation": ["relative", "${workspaceRoot}"],
"pattern": {
"regexp": "^(.*)+s$",
"message": 1
}
}
}
You add this to file tasks.json
and press Ctrl + Shift + B to run it.
Maven
is a build tool. Along with Ant
or Gradle
are Java
s tools for building.
If you are a newbie in Java though just build using your IDE since Maven
has a steep learning curve.
Element.scrollHeight
is a property, not a function, as noted here. As noted here, the scrollHeight property is only supported after IE8. If you need it to work before that, temporarily set the CSS overflow
and height
to auto
, which will cause the div to take the maximum height it needs. Then get the height, and change the properties back to what they were before.
iframe doesn't have onclick event but we can implement this by using iframe's onload event and javascript like this...
function iframeclick() {
document.getElementById("theiframe").contentWindow.document.body.onclick = function() {
document.getElementById("theiframe").contentWindow.location.reload();
}
}
<iframe id="theiframe" src="youriframe.html" style="width: 100px; height: 100px;" onload="iframeclick()"></iframe>
I hope it will helpful to you....
301 is that the requested resource has been assigned a new permanent URI and any future references to this resource should be done using one of the returned URIs.
302 is that the requested resource resides temporarily under a different URI.
Since the redirection may be altered on occasion, the client should continue to use the Request-URI for future requests.
This response is only cachable if indicated by a Cache-Control or Expires header field.
One easy solution is to use delayed expansion, as this doesn't change any special characters.
set "line=<?xml version="1.0" encoding="utf-8" ?>"
setlocal EnableDelayedExpansion
(
echo !line!
) > myfile.xml
EDIT : Another solution is to use a disappearing quote.
This technic uses a quotation mark to quote the special characters
@echo off
setlocal EnableDelayedExpansion
set ""="
echo !"!<?xml version="1.0" encoding="utf-8" ?>
The trick works, as in the special characters phase the leading quotation mark in !"!
will preserve the rest of the line (if there aren't other quotes).
And in the delayed expansion phase the !"!
will replaced with the content of the variable "
(a single quote is a legal name!).
If you are working with disabled delayed expansion, you could use a FOR /F
loop instead.
for /f %%^" in ("""") do echo(%%~" <?xml version="1.0" encoding="utf-8" ?>
But as the seems to be a bit annoying you could also build a macro.
set "print=for /f %%^" in ("""") do echo(%%~""
%print%<?xml version="1.0" encoding="utf-8" ?>
%print% Special characters like &|<>^ works now without escaping
Programmatically you can do it by adding the following constraints.
NSLayoutConstraint *constraintHorizontal = [NSLayoutConstraint constraintWithItem:self
attribute:NSLayoutAttributeCenterX
relatedBy:NSLayoutRelationEqual
toItem:self.superview
attribute:attribute
multiplier:1.0f
constant:0.0f];
NSLayoutConstraint *constraintVertical = [NSLayoutConstraint constraintWithItem:self
attribute:NSLayoutAttributeCenterY
relatedBy:NSLayoutRelationEqual
toItem:self.superview
attribute:attribute
multiplier:1.0f
constant:0.0f];
you can use unique property by using len function
len(df['hID'].unique()) 5
Python protects those members by internally changing the name to include the class name. You can access such attributes as object._className__attrName.
Let's say you have this
A
|
B A0
| |
C D
\ /
|
...
And you want to make sure that A
is the same as A0
.
This will do the trick:
$ git diff B A > B-A.diff
$ git diff D A0 > D-A0.diff
$ diff B-A.diff D-A0.diff
The undocumented method uniqueResultOptional
in org.hibernate.query.Query should do the trick. Instead of having to catch a NoResultException
you can just call query.uniqueResultOptional().orElse(null)
.
import numpy as np
array_ = np.array([[1,2,3]])
add_row = np.array([[4,5,6]])
array_ = np.concatenate((array_, add_row), axis=0)
You can use CurrentDirectory property.
Dim WshShell, strCurDir
Set WshShell = CreateObject("WScript.Shell")
strCurDir = WshShell.CurrentDirectory
WshShell.Run strCurDir & "\attribute.exe", 0
Set WshShell = Nothing
I think my answer will be more technical, but not different as the others present the same thing using different techniques.
So, first things first, the solution to this problem is the use of a design pattern known as "observer", it let's you decouple your data from your presentation, making the change in one thing be broadcasted to their listeners, but in this case it's made two-way.
To bind the data from the DOM to the js object you may add markup in the form of data
attributes (or classes if you need compatibility), like this:
<input type="text" data-object="a" data-property="b" id="b" class="bind" value=""/>
<input type="text" data-object="a" data-property="c" id="c" class="bind" value=""/>
<input type="text" data-object="d" data-property="e" id="e" class="bind" value=""/>
This way it can be accessed via js using querySelectorAll
(or the old friend getElementsByClassName
for compatibility).
Now you can bind the event listening to the changes in to ways: one listener per object or one big listener to the container/document. Binding to the document/container will trigger the event for every change made in it or it's child, it willhave a smaller memory footprint but will spawn event calls.
The code will look something like this:
//Bind to each element
var elements = document.querySelectorAll('input[data-property]');
function toJS(){
//Assuming `a` is in scope of the document
var obj = document[this.data.object];
obj[this.data.property] = this.value;
}
elements.forEach(function(el){
el.addEventListener('change', toJS, false);
}
//Bind to document
function toJS2(){
if (this.data && this.data.object) {
//Again, assuming `a` is in document's scope
var obj = document[this.data.object];
obj[this.data.property] = this.value;
}
}
document.addEventListener('change', toJS2, false);
You will need two things: one meta-object that will hold the references of witch DOM element is binded to each js object/attribute and a way to listen to changes in objects. It is basically the same way: you have to have a way to listen to changes in the object and then bind it to the DOM node, as your object "can't have" metadata you will need another object that holds metadata in a way that the property name maps to the metadata object's properties. The code will be something like this:
var a = {
b: 'foo',
c: 'bar'
},
d = {
e: 'baz'
},
metadata = {
b: 'b',
c: 'c',
e: 'e'
};
function toDOM(changes){
//changes is an array of objects changed and what happened
//for now i'd recommend a polyfill as this syntax is still a proposal
changes.forEach(function(change){
var element = document.getElementById(metadata[change.name]);
element.value = change.object[change.name];
});
}
//Side note: you can also use currying to fix the second argument of the function (the toDOM method)
Object.observe(a, toDOM);
Object.observe(d, toDOM);
I hope that i was of help.
Assuming your have a value like the following
var obj = {"0":"1","1":"2","2":"3","3":"4"};
Then you can turn this into a javascript array using the following
var arr = [];
json = JSON.stringify(eval('(' + obj + ')')); //convert to json string
arr = $.parseJSON(json); //convert to javascript array
This works for converting json into multi-diminsional javascript arrays as well.
None of the other methods on this page seemed to work completely for me when working with php json-encoded strings except the method I am mentioning herein.
Final keyword in C++ when added to a function, prevents it from being overridden by a base class. Also when added to a class prevents inheritance of any type. Consider the following example which shows use of final specifier. This program fails in compilation.
#include <iostream>
using namespace std;
class Base
{
public:
virtual void myfun() final
{
cout << "myfun() in Base";
}
};
class Derived : public Base
{
void myfun()
{
cout << "myfun() in Derived\n";
}
};
int main()
{
Derived d;
Base &b = d;
b.myfun();
return 0;
}
Also:
#include <iostream>
class Base final
{
};
class Derived : public Base
{
};
int main()
{
Derived d;
return 0;
}
Instead of writing this amount of code to make a simple call, you could use one of the wrappers available over the internet.
I've written one called WebApiClient, available at NuGet... check it out!
https://www.nuget.org/packages/WebApiRestService.WebApiClient/
Today upgraded to Android 3.3, which broke everything for me.
This one was related to importing the project, not opening it.
Solution which worked for me, was to import the project. During the import it detects that the SDK directory is missing and proposes to open it from a location which actually exists. It worked in my case but your case might be different.
Many other changes still needed to be done to make old projects work. What a pain any update is. I wonder why don't they do a thorough QA first before releasing these updates. It has become an industry norm to release problem filled software, probably thinking that users will figure out solutions via Stackoverflow.
Ideally, have a keyword table containing the fields:
Keyword
Id
Count (possibly)
with an index on Keyword. Create an insert/update/delete trigger on the other table so that, when a row is changed, every keyword is extracted and put into (or replaced in) this table.
You'll also need a table of words to not count as keywords (if, and, so, but, ...).
In this way, you'll get the best speed for queries wanting to look for the keywords and you can implement (relatively easily) more complex queries such as "contains Java and RCA1802".
"LIKE"
queries will work but they won't scale as well.
Yes, anonymous inner classes is definitely one of the advantages of Java.
With an anonymous inner class you have access to final and member variables of the surrounding class, and that comes in handy in listeners etc.
But a major advantage is that the inner class code, which is (at least should be) tightly coupled to the surrounding class/method/block, has a specific context (the surrounding class, method, and block).
if you want to set value than you can do the same in some function on click or on some event fire.
also you can get value using ViewChild
using local variable like this
<input type='text' id='loginInput' #abc/>
and get value like this
this.abc.nativeElement.value
okay got it , you have to use ngAfterViewInit
method of angualr2 for the same like this
ngAfterViewInit(){
document.getElementById('loginInput').value = '123344565';
}
ngAfterViewInit
will not throw any error because it will render after template loading
NOTE calling parent method via super will only work on parent class,
If your parent is interface, and wants to call the default methods then need to add interfaceName before super like IfscName.super.method();
interface Vehicle {
//Non abstract method
public default void printVehicleTypeName() { //default keyword can be used only in interface.
System.out.println("Vehicle");
}
}
class FordFigo extends FordImpl implements Vehicle, Ford {
@Override
public void printVehicleTypeName() {
System.out.println("Figo");
Vehicle.super.printVehicleTypeName();
}
}
Interface name is needed because same default methods can be available in multiple interface name that this class extends. So explicit call to a method is required.
Jenkins also supports the format PATH+<name>
to prepend to any variable, not only PATH:
Global Environment variables or node Environment variables:
This is also supported in the pipeline step withEnv
:
node {
withEnv(['PATH+JAVA=/path/to/java/bin']) {
...
}
}
Just take note, it prepends to the variable. If it must be appended you need to do what the other answers show.
See the pipeline steps document here.
You may also use the syntax PATH+WHATEVER=/something to prepend /something to $PATH
Or the java docs on EnvVars here.
I like to use ubuntu groups to achieve this instead of changing owner. Its quite simple.
First install nodejs and npm using apt-get
sudo apt-get update && sudo apt-get install nodejs npm
Figure out who is logged in i.e username, run following command to see it in terminal
whoami
You can see the list of groups you are assigned by using a very simple command, normally the first group is your username itself
groups
Run following to allow access to logged in user
sudo chmod 777 -R /usr/local && sudo chgrp $(whoami) -R /usr/local
Update npm and nodejs
npm install -g npm
You are allset, your user can run npm commands without sudo
You can also refer to this link https://askubuntu.com/a/1115373/687804
Microsoft's GUID
's textual representation can be in the form of a UUID being surrounded by two curly braces {}
.
The problem for me was that the library project and the project using play services were in different directories. So just:
It's about branch prediction. What is it?
A branch predictor is one of the ancient performance improving techniques which still finds relevance into modern architectures. While the simple prediction techniques provide fast lookup and power efficiency they suffer from a high misprediction rate.
On the other hand, complex branch predictions –either neural based or variants of two-level branch prediction –provide better prediction accuracy, but they consume more power and complexity increases exponentially.
In addition to this, in complex prediction techniques the time taken to predict the branches is itself very high –ranging from 2 to 5 cycles –which is comparable to the execution time of actual branches.
Branch prediction is essentially an optimization (minimization) problem where the emphasis is on to achieve lowest possible miss rate, low power consumption, and low complexity with minimum resources.
There really are three different kinds of branches:
Forward conditional branches - based on a run-time condition, the PC (program counter) is changed to point to an address forward in the instruction stream.
Backward conditional branches - the PC is changed to point backward in the instruction stream. The branch is based on some condition, such as branching backwards to the beginning of a program loop when a test at the end of the loop states the loop should be executed again.
Unconditional branches - this includes jumps, procedure calls and returns that have no specific condition. For example, an unconditional jump instruction might be coded in assembly language as simply "jmp", and the instruction stream must immediately be directed to the target location pointed to by the jump instruction, whereas a conditional jump that might be coded as "jmpne" would redirect the instruction stream only if the result of a comparison of two values in a previous "compare" instructions shows the values to not be equal. (The segmented addressing scheme used by the x86 architecture adds extra complexity, since jumps can be either "near" (within a segment) or "far" (outside the segment). Each type has different effects on branch prediction algorithms.)
Static/dynamic Branch Prediction: Static branch prediction is used by the microprocessor the first time a conditional branch is encountered, and dynamic branch prediction is used for succeeding executions of the conditional branch code.
References:
Branch Prediction (Using wayback machine)
Do a describe on dba_arguments, dba_errors, dba_procedures, dba_objects, dba_source, dba_object_size. Each of these has part of the pictures for looking at the procedures and functions.
Also the object_type in dba_objects for packages is 'PACKAGE' for the definition and 'PACKAGE BODY" for the body.
If you are comparing schemas on the same database then try:
select * from dba_objects
where schema_name = 'ASCHEMA'
and object_type in ( 'PROCEDURE', 'PACKAGE', 'FUNCTION', 'PACKAGE BODY' )
minus
select * from dba_objects
where schema_name = 'BSCHEMA'
and object_type in ( 'PROCEDURE', 'PACKAGE', 'FUNCTION', 'PACKAGE BODY' )
and switch around the orders of ASCHEMA and BSCHEMA.
If you also need to look at triggers and comparing other stuff between the schemas you should take a look at the Article on Ask Tom about comparing schemas
Clean your maven cache and rerun:
mvn dependency:purge-local-repository
Very simply, use this
as the context: http://api.jquery.com/jQuery/#selector-context
var a_href = $('div.cpt', this).find('h2 a').attr('href');
Which says, find 'div.cpt'
only inside this
Using Between condition
SELECT *
FROM TEST
WHERE COLUMN_NAME BETWEEN x AND y ;
Or using Just operators,
SELECT *
FROM TEST
WHERE COLUMN_NAME >= x AND COLUMN_NAME <= y;
I have used the following:
public static double Index2Freq(int i, double samples, int nFFT) {
return (double) i * (samples / nFFT / 2.);
}
public static int Freq2Index(double freq, double samples, int nFFT) {
return (int) (freq / (samples / nFFT / 2.0));
}
The inputs are:
i
: Bin to accesssamples
: Sampling rate in Hertz (i.e. 8000 Hz, 44100Hz, etc.)nFFT
: Size of the FFT vectorIf you want to change the range to [0, 1], make sure the output data type is float
.
image = cv2.imread("lenacolor512.tiff", cv2.IMREAD_COLOR) # uint8 image
norm_image = cv2.normalize(image, None, alpha=0, beta=1, norm_type=cv2.NORM_MINMAX, dtype=cv2.CV_32F)
A 302 status code is HTTP response status code indicating that the requested resource has been temporarily moved to a different URI. Since the location or current redirection directive might be changed in the future, a client that receives a 302 Found response code should continue to use the original URI for future requests.
An HTTP response with this status code will additionally provide a URL in the header field Location. This is an invitation to the user agent (e.g. a web browser) to make a second, otherwise identical, request to the new URL specified in the location field. The end result is a redirection to the new URL.
Using list comprehension, you can get all the columns names (header):
[column for column in df]
The other solution are OK, but there is no need to add separator at the very last if using :after or at the very beginning if using :before.
SO:
case :after
.link:after {
content: '|';
padding: 0 1rem;
}
.link:last-child:after {
content: '';
}
case :before
.link:before {
content: '|';
padding: 0 1rem;
}
.link:first-child:before {
content: '';
}
I had similar problem. Quick solution is :
ulimit -n 4096
explanation is as follows - each server connection is a file descriptor. In CentOS, Redhat and Fedora, probably others, file user limit is 1024 - no idea why. It can be easily seen when you type: ulimit -n
Note this has no much relation to system max files (/proc/sys/fs/file-max).
In my case it was problem with Redis, so I did:
ulimit -n 4096
redis-server -c xxxx
in your case instead of redis, you need to start your server.
Ok, Im assuming you want to put the .left inside the container so I suggest you edit your html. The key is the position:absolute
and right:0
#right {
background-color: red;
height: 300px;
width: 300px;
z-index: 999999;
margin-top: 0px;
position: absolute;
right:0;
}
here is the full code: http://jsfiddle.net/T9FJL/
I personally use these following alias in bash
in ~/.gitconfig file
[alias]
pushup = "!git push --set-upstream origin $(git symbolic-ref --short HEAD)"
and in ~/.bashrc or ~/.zshrc file
alias gpo="git pushup"
alias gpof="gpo -f"
alias gf="git fetch"
alias gp="git pull"
You can try adding:
#aboutDescription
{
height: 100px;
max-height: 100px;
}
If anyone has, like I do, an Estimating workbook with a default number of visible pricing sheets, a Summary and a larger number of hidden and 'protected' worksheets full of sensitive data but may need to create additional visible worksheets to arrive at a proper price, I have variant of the above responses that creates the said visible worksheets based on a protected hidden "Master". I have used the code provided by @/jean-fran%c3%a7ois-corbett and @thanos-a in combination with simple VBA as shown below.
Sub sbInsertWorksheetAfter()
'This adds a new visible worksheet after the last visible worksheet
ThisWorkbook.Sheets.Add After:=Worksheets(Worksheets.Count)
'This copies the content of the HIDDEN "Master" worksheet to the new VISIBLE ActiveSheet just created
ThisWorkbook.Sheets("Master").Cells.Copy _
Destination:=ActiveSheet.Cells
'This gives the the new ActiveSheet a default name
With ActiveSheet
.Name = Sheet12.Name & " copied"
End With
'This changes the name of the ActiveSheet to the user's preference
Dim sheetname As String
With ActiveSheet
sheetname = InputBox("Enter name of this Worksheet")
.Name = sheetname
End With
End Sub
Laravel 5.2+, back button
<a href="{{ url()->previous() }}" class="btn btn-default">Back</a>
This is surely an encoding problem. You have a different encoding in your database and in your website and this fact is the cause of the problem. Also if you ran that command you have to change the records that are already in your tables to convert those character in UTF-8.
Update: Based on your last comment, the core of the problem is that you have a database and a data source (the CSV file) which use different encoding. Hence you can convert your database in UTF-8 or, at least, when you get the data that are in the CSV, you have to convert them from UTF-8 to latin1.
You can do the convertion following this articles:
if num % 2 == 0:
pass # Even
else:
pass # Odd
The %
sign is like division only it checks for the remainder, so if the number divided by 2
has a remainder of 0
it's even otherwise odd.
Or reverse them for a little speed improvement, since any number above 0 is also considered "True" you can skip needing to do any equality check:
if num % 2:
pass # Odd
else:
pass # Even
The WITH
clause for Common Table Expressions go at the top.
Wrapping every insert in a CTE has the benefit of visually segregating the query logic from the column mapping.
Spot the mistake:
WITH _INSERT_ AS (
SELECT
[BatchID] = blah
,[APartyNo] = blahblah
,[SourceRowID] = blahblahblah
FROM Table1 AS t1
)
INSERT Table2
([BatchID], [SourceRowID], [APartyNo])
SELECT [BatchID], [APartyNo], [SourceRowID]
FROM _INSERT_
Same mistake:
INSERT Table2 (
[BatchID]
,[SourceRowID]
,[APartyNo]
)
SELECT
[BatchID] = blah
,[APartyNo] = blahblah
,[SourceRowID] = blahblahblah
FROM Table1 AS t1
A few lines of boilerplate make it extremely easy to verify the code inserts the right number of columns in the right order, even with a very large number of columns. Your future self will thank you later.
$("#filter").click(function(){
//Put your code here
});
You can't remove from list if you're browsing it with "for each" loop. You can use Iterator
. Replace:
for (DrugStrength aDrugStrength : aDrugStrengthList) {
if (!aDrugStrength.isValidDrugDescription()) {
aDrugStrengthList.remove(aDrugStrength);
}
}
With:
for (Iterator<DrugStrength> it = aDrugStrengthList.iterator(); it.hasNext(); ) {
DrugStrength aDrugStrength = it.next();
if (!aDrugStrength.isValidDrugDescription()) {
it.remove();
}
}
Prefer composition over inheritance as it is more malleable / easy to modify later, but do not use a compose-always approach. With composition, it's easy to change behavior on the fly with Dependency Injection / Setters. Inheritance is more rigid as most languages do not allow you to derive from more than one type. So the goose is more or less cooked once you derive from TypeA.
My acid test for the above is:
Does TypeB want to expose the complete interface (all public methods no less) of TypeA such that TypeB can be used where TypeA is expected? Indicates Inheritance.
Does TypeB want only some/part of the behavior exposed by TypeA? Indicates need for Composition.
Update: Just came back to my answer and it seems now that it is incomplete without a specific mention of Barbara Liskov's Liskov Substitution Principle as a test for 'Should I be inheriting from this type?'
I'm on Ubuntu 15.04. This seemed to work:
$ sudo pip3 install numpy
On RHEL this worked:
$ sudo python3 -m pip install numpy
Example:
master
, develop
develop
branch and want to ignore it while mergingCode:
git config --global merge.ours.driver true
git checkout master
echo "path/file_to_ignore merge=ours" >> .gitattributes
git merge develop
You can also ignore files with same extension
for example all files with .txt
extension:
echo "*.txt merge=ours" >> .gitattributes
simply pass the argument
attachtoroot = false
View view = inflater.inflate(R.layout.child_layout_to_merge, parent_layout, false);
Immutable version, no side effects (doesn’t mutate original array):
const testArr = [1, 2, 3, 4, 5];
function move(from, to, arr) {
const newArr = [...arr];
const item = newArr.splice(from, 1)[0];
newArr.splice(to, 0, item);
return newArr;
}
console.log(move(3, 1, testArr));
// [1, 4, 2, 3, 5]
codepen: https://codepen.io/mliq/pen/KKNyJZr
if(!empty($_POST['filename'])){
$filename = $_POST['filename'];
echo $filename;
}
I had the same error for quite a while, and here what fixed it for me.
I simply declared in service that i use what follows:
Description= Your node service description
After=network.target
[Service]
Type=forking
PIDFile=/tmp/node_pid_name.pid
Restart=on-failure
KillSignal=SIGQUIT
WorkingDirectory=/path/to/node/app/root/directory
ExecStart=/path/to/node /path/to/server.js
[Install]
WantedBy=multi-user.target
What should catch your attention here is "After=network.target". I spent days and days looking for fixes on nginx side, while the problem was just that. To be sure, stop running the node service you have, launch the ExecStart command directly and try to reproduce the bug. If it doesn't pop, it just means that your service has a problem. At least this is how i found my answer.
For everybody else, good luck!
Just generate migration using command
rails g migration rename_hased_password
After that edit the migration add following line in change method
rename_column :table, :hased_password, :hashed_password
This should do the trick.
the & is the default value for DEFINE, which allows you to use substitution variables. I like to turn it off using
SET DEFINE OFF
then you won't have to worry about escaping or CHR(38).
According to Laravel 5.2 docs, your publicly accessible files should be put in directory
storage/app/public
To make them accessible from the web, you should create a symbolic link from public/storage
to storage/app/public
.
ln -s /path/to/laravel/storage/app/public /path/to/laravel/public/storage
Now you can create in your view an URL to the files using the asset helper:
echo asset('storage/file.txt');
As other people suggested, you need to use a combobox. However, most tutorials show you how to set up just one combobox and the process is quite tedious.
As I faced this problem before when entering a large amount of data from a list, I can suggest you use this autocomplete add-in . It helps you create the combobox on any cells you select and you can define a list to appear in the dropdown.
I encourage you to use the -r
flag for read
which stands for:
-r Do not treat a backslash character in any special way. Consider each
backslash to be part of the input line.
I am citing from man 1 read
.
Another thing is to take a filename as an argument.
Here is updated code:
#!/usr/bin/bash
filename="$1"
while read -r line; do
name="$line"
echo "Name read from file - $name"
done < "$filename"
I think the following function can help to have scroll coordinate values:
const getScrollCoordinate = (el = window) => ({
x: el.pageXOffset || el.scrollLeft,
y: el.pageYOffset || el.scrollTop,
});
I got this idea from this answer with a little change.
Transparency is controlled by the alpha channel (AA
in #AARRGGBB
). Maximal value (255 dec, FF hex) means fully opaque. Minimum value (0 dec, 00 hex) means fully transparent. Values in between are semi-transparent, i.e. the color is mixed with the background color.
To get a fully transparent color set the alpha to zero. RR
, GG
and BB
are irrelevant in this case because no color will be visible. This means #00FFFFFF
("transparent White") is the same color as #00F0F8FF
("transparent AliceBlue").
To keep it simple one chooses black (#00000000
) or white (#00FFFFFF
) if the color does not matter.
In the table you linked to you'll find Transparent
defined as #00FFFFFF
.
Info on MySQL's full text search. This is restricted to MyISAM tables, so may not be suitable if you wantto use a different table type.
http://dev.mysql.com/doc/refman/5.0/en/fulltext-search.html
Even if WHERE textcolumn LIKE "%SUBSTRING%"
is going to be slow, I think it is probably better to let the Database handle it rather than have PHP handle it. If it is possible to restrict searches by some other criteria (date range, user, etc) then you may find the substring search is OK (ish).
If you are searching for whole words, you could pull out all the individual words into a separate table and use that to restrict the substring search. (So when searching for "my search string" you look for the the longest word "search" only do the substring search on records containing the word "search")
The solution I found most useful for cropping a buffered image uses the getSubImage(x,y,w,h);
My cropping routine ended up looking like this:
private BufferedImage cropImage(BufferedImage src, Rectangle rect) {
BufferedImage dest = src.getSubimage(0, 0, rect.width, rect.height);
return dest;
}
for new url
location.assign("http:google.com");
The assign() method loads a new document.
reload
location.reload();
The reload() method is used to reload the current document.
Set<Foo> foo = new HashSet<Foo>(myList);
In a regular expression, you can "capture" parts of the matched string with (brackets)
; in this case, you are capturing the (^|_)
and ([a-z])
parts of the match. These are numbered starting at 1, so you have back-references 1 and 2. Match 0 is the whole matched string.
The /e
modifier takes a replacement string, and substitutes backslash followed by a number (e.g. \1
) with the appropriate back-reference - but because you're inside a string, you need to escape the backslash, so you get '\\1'
. It then (effectively) runs eval
to run the resulting string as though it was PHP code (which is why it's being deprecated, because it's easy to use eval
in an insecure way).
The preg_replace_callback
function instead takes a callback function and passes it an array containing the matched back-references. So where you would have written '\\1'
, you instead access element 1 of that parameter - e.g. if you have an anonymous function of the form function($matches) { ... }
, the first back-reference is $matches[1]
inside that function.
So a /e
argument of
'do_stuff(\\1) . "and" . do_stuff(\\2)'
could become a callback of
function($m) { return do_stuff($m[1]) . "and" . do_stuff($m[2]); }
Or in your case
'strtoupper("\\2")'
could become
function($m) { return strtoupper($m[2]); }
Note that $m
and $matches
are not magic names, they're just the parameter name I gave when declaring my callback functions. Also, you don't have to pass an anonymous function, it could be a function name as a string, or something of the form array($object, $method)
, as with any callback in PHP, e.g.
function stuffy_callback($things) {
return do_stuff($things[1]) . "and" . do_stuff($things[2]);
}
$foo = preg_replace_callback('/([a-z]+) and ([a-z]+)/', 'stuffy_callback', 'fish and chips');
As with any function, you can't access variables outside your callback (from the surrounding scope) by default. When using an anonymous function, you can use the use
keyword to import the variables you need to access, as discussed in the PHP manual. e.g. if the old argument was
'do_stuff(\\1, $foo)'
then the new callback might look like
function($m) use ($foo) { return do_stuff($m[1], $foo); }
preg_replace_callback
is instead of the /e
modifier on the regex, so you need to remove that flag from your "pattern" argument. So a pattern like /blah(.*)blah/mei
would become /blah(.*)blah/mi
./e
modifier used a variant of addslashes()
internally on the arguments, so some replacements used stripslashes()
to remove it; in most cases, you probably want to remove the call to stripslashes
from your new callback.<android.support.v7.widget.Toolbar
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:contentInsetLeft="0dp"
app:contentInsetStart="0dp"
android:paddingLeft="0dp">
This should be good enough.
Althugh you asked for Google Maps API, I suggest an open source, working, legal, free and crowdsourced API by Open street maps
https://nominatim.openstreetmap.org/search?q=Mumbai&format=json
Here is the API documentation for reference.
Edit: It looks like there are discrepancies occasionally, at least in terms of postal codes, when compared to the Google Maps API, and the latter seems to be more accurate. This was the case when validating addresses in Canada with the Canada Post search service, however, it might be true for other countries too.
Since you have not mentioned what needs to be copied, I have left that section empty in the code below.
Also you don't need to move the email to the folder first and then run the macro in that folder. You can run the macro on the incoming mail and then move it to the folder at the same time.
This will get you started. I have commented the code so that you will not face any problem understanding it.
First paste the below mentioned code in the outlook module.
Then
When the new email arrives not only will the email move to the folder that you specify but data from it will be exported to Excel as well.
UNTESTED
Const xlUp As Long = -4162
Sub ExportToExcel(MyMail As MailItem)
Dim strID As String, olNS As Outlook.Namespace
Dim olMail As Outlook.MailItem
Dim strFileName As String
'~~> Excel Variables
Dim oXLApp As Object, oXLwb As Object, oXLws As Object
Dim lRow As Long
strID = MyMail.EntryID
Set olNS = Application.GetNamespace("MAPI")
Set olMail = olNS.GetItemFromID(strID)
'~~> Establish an EXCEL application object
On Error Resume Next
Set oXLApp = GetObject(, "Excel.Application")
'~~> If not found then create new instance
If Err.Number <> 0 Then
Set oXLApp = CreateObject("Excel.Application")
End If
Err.Clear
On Error GoTo 0
'~~> Show Excel
oXLApp.Visible = True
'~~> Open the relevant file
Set oXLwb = oXLApp.Workbooks.Open("C:\Sample.xls")
'~~> Set the relevant output sheet. Change as applicable
Set oXLws = oXLwb.Sheets("Sheet1")
lRow = oXLws.Range("A" & oXLApp.Rows.Count).End(xlUp).Row + 1
'~~> Write to outlook
With oXLws
'
'~~> Code here to output data from email to Excel File
'~~> For example
'
.Range("A" & lRow).Value = olMail.Subject
.Range("B" & lRow).Value = olMail.SenderName
'
End With
'~~> Close and Clean up Excel
oXLwb.Close (True)
oXLApp.Quit
Set oXLws = Nothing
Set oXLwb = Nothing
Set oXLApp = Nothing
Set olMail = Nothing
Set olNS = Nothing
End Sub
FOLLOWUP
To extract the contents from your email body, you can split it using SPLIT() and then parsing out the relevant information from it. See this example
Dim MyAr() As String
MyAr = Split(olMail.body, vbCrLf)
For i = LBound(MyAr) To UBound(MyAr)
'~~> This will give you the contents of your email
'~~> on separate lines
Debug.Print MyAr(i)
Next i
If you are not tweaking the curl command too much you can also go and call the curl command directly
import shlex
cmd = '''curl -X POST -d '{"nw_src": "10.0.0.1/32", "nw_dst": "10.0.0.2/32", "nw_proto": "ICMP", "actions": "ALLOW", "priority": "10"}' http://localhost:8080/firewall/rules/0000000000000001'''
args = shlex.split(cmd)
process = subprocess.Popen(args, shell=False, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
stdout, stderr = process.communicate()
In Java 8:
Arrays.sort(files, (a, b) -> a.getName().compareTo(b.getName()));
Reverse order:
Arrays.sort(files, (a, b) -> -a.getName().compareTo(b.getName()));
It would seem overkill but Spring Forms handles this elegantly. That is of course if you are already using Spring MVC and you want to take advantage of the Spring Forms feature.
// jsp form
<form:select path="friendlyNumber" items="${friendlyNumberItems}" />
// the command class
public class NumberCmd {
private String[] friendlyNumber;
}
// in your Spring MVC controller submit method
@RequestMapping(method=RequestMethod.POST)
public String manageOrders(@ModelAttribute("nbrCmd") NumberCmd nbrCmd){
String[] selectedNumbers = nbrCmd.getFriendlyNumber();
}
You can use the following 3 ways to create ArrayList from Array.
String[] array = {"a", "b", "c", "d", "e"};
//Method 1
List<String> list = Arrays.asList(array);
//Method 2
List<String> list1 = new ArrayList<String>();
Collections.addAll(list1, array);
//Method 3
List<String> list2 = new ArrayList<String>();
for(String text:array) {
list2.add(text);
}
For those that are not overflowing but hiding by negative margin:
$('#element').height() + -parseInt($('#element').css("margin-top"));
(ugly but only one that works so far)
Tools -> NuGet Package Manager -> Package Manager Console
PM> Install-Package Newtonsoft.Json
Try this:
concat(left(datefield,10),left(timefield,8))
10 char on date field based on full date yyyy-MM-dd
.
8 char on time field based on full time hh:mm:ss
.
It depends on the format you want it. normally you can use script above and you can concat another field or string as you want it.
Because actually date and time field tread as string if you read it. But of course you will got error while update or insert it.
The T is just a literal to separate the date from the time, and the Z means "zero hour offset" also known as "Zulu time" (UTC). If your strings always have a "Z" you can use:
SimpleDateFormat format = new SimpleDateFormat(
"yyyy-MM-dd'T'HH:mm:ss.SSS'Z'", Locale.US);
format.setTimeZone(TimeZone.getTimeZone("UTC"));
Or using Joda Time, you can use ISODateTimeFormat.dateTime()
.
You said :
Maybe my data.frame is not in a good format?
Yes this is true. Your data is in the wide format You need to put it in the long format. Generally speaking, long format is better for variables comparison.
Using reshape2
for example , you do this using melt
:
dat.m <- melt(dat,id.vars = "Rank") ## just melt(dat) should work
Then you get your barplot:
ggplot(dat.m, aes(x = Rank, y = value,fill=variable)) +
geom_bar(stat='identity')
But using lattice
and barchart
smart formula notation , you don't need to reshape your data , just do this:
barchart(F1+F2+F3~Rank,data=dat)
Origin null
is the local file system, so that suggests that you're loading the HTML page that does the load
call via a file:///
URL (e.g., just double-clicking it in a local file browser or similar). Different browsers take different approaches to applying the Same Origin Policy to local files.
My guess is that you're seeing this using Chrome. Chrome's rules for applying the SOP to local files are very tight, it disallows even loading files from the same directory as the document. So does Opera. Some other browsers, such as Firefox, allow limited access to local files. But basically, using ajax with local resources isn't going to work cross-browser.
If you're just testing something locally that you'll really be deploying to the web, rather than use local files, install a simple web server and test via http://
URLs instead. That gives you a much more accurate security picture.
See ?merge
:
the name "row.names" or the number 0 specifies the row names.
Example:
R> de <- merge(d, e, by=0, all=TRUE) # merge by row names (by=0 or by="row.names")
R> de[is.na(de)] <- 0 # replace NA values
R> de
Row.names a b c d e f g h i j k l m n o p q r s
1 1 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10 11 12 13 14 15 16 17 18 19
2 2 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 0 0 0 0 0 0 0 0 0
3 3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 21 22 23 24 25 26 27 28 29
t
1 20
2 0
3 30
I don't know why but for me text-align:center;
only works with:
text-align: grid;
OR
display: inline-grid;
I checked and no one style is overriding.
My structure:
<ul>
<li>
<a>ElementToCenter</a>
</li>
</ul>
This is all I needed:
<meta name="viewport" content="user-scalable=no"/>
For global installation : npm install webpack-dev-server -g
For local installation npm install --save-dev webpack
When you refer webpack in package.json file, it tries to look it in location node_modules\.bin\
After local installation, file wbpack will get created in location: \node_modules\.bin\webpack
Try including stdint.h
or inttypes.h
.
You can do the following. Add your ggplot code after the first line of code and end with dev.off()
.
tiff("test.tiff", units="in", width=5, height=5, res=300)
# insert ggplot code
dev.off()
res=300
specifies that you need a figure with a resolution of 300 dpi. The figure file named 'test.tiff' is saved in your working directory.
Change width
and height
in the code above depending on the desired output.
Note that this also works for other R
plots including plot
, image
, and pheatmap
.
Other file formats
In addition to TIFF, you can easily use other image file formats including JPEG, BMP, and PNG. Some of these formats require less memory for saving.
The Enter key should have the keycode 13. Is it not working?
In my case I had special instruction into nginx configuration file:
location ~ \.(js|css|png|jpg|gif|swf|ico|pdf|mov|fla|zip|rar)$ {
try_files $uri =404;
}
All clients have received '404' because nginx nothing known about Flask.
I hope it help someone.
(Update) V5.1 & Hooks (Requires React >= 16.8)
You can use useHistory
, useLocation
and useRouteMatch
in your component to get match
, history
and location
.
const Child = () => {
const location = useLocation();
const history = useHistory();
const match = useRouteMatch("write-the-url-you-want-to-match-here");
return (
<div>{location.pathname}</div>
)
}
export default Child
(Update) V4 & V5
You can use withRouter
HOC in order to inject match
, history
and location
in your component props.
class Child extends React.Component {
static propTypes = {
match: PropTypes.object.isRequired,
location: PropTypes.object.isRequired,
history: PropTypes.object.isRequired
}
render() {
const { match, location, history } = this.props
return (
<div>{location.pathname}</div>
)
}
}
export default withRouter(Child)
(Update) V3
You can use withRouter
HOC in order to inject router
, params
, location
, routes
in your component props.
class Child extends React.Component {
render() {
const { router, params, location, routes } = this.props
return (
<div>{location.pathname}</div>
)
}
}
export default withRouter(Child)
Original answer
If you don't want to use the props, you can use the context as described in React Router documentation
First, you have to set up your childContextTypes
and getChildContext
class App extends React.Component{
getChildContext() {
return {
location: this.props.location
}
}
render() {
return <Child/>;
}
}
App.childContextTypes = {
location: React.PropTypes.object
}
Then, you will be able to access to the location object in your child components using the context like this
class Child extends React.Component{
render() {
return (
<div>{this.context.location.pathname}</div>
)
}
}
Child.contextTypes = {
location: React.PropTypes.object
}
If you declare the method as synchronized (as you're doing by typing public synchronized void addA()
) you synchronize on the whole object, so two thread accessing a different variable from this same object would block each other anyway.
If you want to synchronize only on one variable at a time, so two threads won't block each other while accessing different variables, you have synchronize on them separately in synchronized ()
blocks. If a
and b
were object references you would use:
public void addA() {
synchronized( a ) {
a++;
}
}
public void addB() {
synchronized( b ) {
b++;
}
}
But since they're primitives you can't do this.
I would suggest you to use AtomicInteger instead:
import java.util.concurrent.atomic.AtomicInteger;
class X {
AtomicInteger a;
AtomicInteger b;
public void addA(){
a.incrementAndGet();
}
public void addB(){
b.incrementAndGet();
}
}
If you want to retrieve the length (and possibly all other metadata) from your media file with ffmpeg by using a python script you could try this:
import subprocess
import json
input_file = "< path to your input file here >"
metadata = subprocess.check_output(f"ffprobe -i {input_file} -v quiet -print_format json -show_format -hide_banner".split(" "))
metadata = json.loads(metadata)
print(f"Length of file is: {float(metadata['format']['duration'])}")
print(metadata)
Output:
Length of file is: 7579.977143
{
"streams": [
{
"index": 0,
"codec_name": "mp3",
"codec_long_name": "MP3 (MPEG audio layer 3)",
"codec_type": "audio",
"codec_time_base": "1/44100",
"codec_tag_string": "[0][0][0][0]",
"codec_tag": "0x0000",
"sample_fmt": "fltp",
"sample_rate": "44100",
"channels": 2,
"channel_layout": "stereo",
"bits_per_sample": 0,
"r_frame_rate": "0/0",
"avg_frame_rate": "0/0",
"time_base": "1/14112000",
"start_pts": 353600,
"start_time": "0.025057",
"duration_ts": 106968637440,
"duration": "7579.977143",
"bit_rate": "320000",
...
...
I spent a lot of time to use SerialPort class and has concluded to use SerialPort.BaseStream class instead. You can see source code: SerialPort-source and SerialPort.BaseStream-source for deep understanding. I created and use code that shown below.
The core function
public int Recv(byte[] buffer, int maxLen)
has name and works like "well known" socket's recv()
.
It means that
TimeoutException
.maxLen
bytes .
public class Uart : SerialPort
{
private int _receiveTimeout;
public int ReceiveTimeout { get => _receiveTimeout; set => _receiveTimeout = value; }
static private string ComPortName = "";
/// <summary>
/// It builds PortName using ComPortNum parameter and opens SerialPort.
/// </summary>
/// <param name="ComPortNum"></param>
public Uart(int ComPortNum) : base()
{
base.BaudRate = 115200; // default value
_receiveTimeout = 2000;
ComPortName = "COM" + ComPortNum;
try
{
base.PortName = ComPortName;
base.Open();
}
catch (UnauthorizedAccessException ex)
{
Console.WriteLine("Error: Port {0} is in use", ComPortName);
}
catch (Exception ex)
{
Console.WriteLine("Uart exception: " + ex);
}
} //Uart()
/// <summary>
/// Private property returning positive only Environment.TickCount
/// </summary>
private int _tickCount { get => Environment.TickCount & Int32.MaxValue; }
/// <summary>
/// It uses SerialPort.BaseStream rather SerialPort functionality .
/// It Receives up to maxLen number bytes of data,
/// Or throws TimeoutException if no any data arrived during ReceiveTimeout.
/// It works likes socket-recv routine (explanation in body).
/// Returns:
/// totalReceived - bytes,
/// TimeoutException,
/// -1 in non-ComPortNum Exception
/// </summary>
/// <param name="buffer"></param>
/// <param name="maxLen"></param>
/// <returns></returns>
public int Recv(byte[] buffer, int maxLen)
{
/// The routine works in "pseudo-blocking" mode. It cycles up to first
/// data received using BaseStream.ReadTimeout = TimeOutSpan (2 ms).
/// If no any message received during ReceiveTimeout property,
/// the routine throws TimeoutException
/// In other hand, if any data has received, first no-data cycle
/// causes to exit from routine.
int TimeOutSpan = 2;
// counts delay in TimeOutSpan-s after end of data to break receive
int EndOfDataCnt;
// pseudo-blocking timeout counter
int TimeOutCnt = _tickCount + _receiveTimeout;
//number of currently received data bytes
int justReceived = 0;
//number of total received data bytes
int totalReceived = 0;
BaseStream.ReadTimeout = TimeOutSpan;
//causes (2+1)*TimeOutSpan delay after end of data in UART stream
EndOfDataCnt = 2;
while (_tickCount < TimeOutCnt && EndOfDataCnt > 0)
{
try
{
justReceived = 0;
justReceived = base.BaseStream.Read(buffer, totalReceived, maxLen - totalReceived);
totalReceived += justReceived;
if (totalReceived >= maxLen)
break;
}
catch (TimeoutException)
{
if (totalReceived > 0)
EndOfDataCnt--;
}
catch (Exception ex)
{
totalReceived = -1;
base.Close();
Console.WriteLine("Recv exception: " + ex);
break;
}
} //while
if (totalReceived == 0)
{
throw new TimeoutException();
}
else
{
return totalReceived;
}
} // Recv()
} // Uart
Provisioning files are located in:
/Users/${USER}/Library/MobileDevice/Provisioning Profiles/
Just remove the out-of-date files.
_.unique
no longer works for the current version of Lodash as version 4.0.0 has this breaking change. The functionality of _.unique
was splitted into _.uniq
, _.sortedUniq
, _.sortedUniqBy
, and _.uniqBy
.
You could use _.uniqBy
like this:
_.uniqBy(data, function (e) {
return e.id;
});
...or like this:
_.uniqBy(data, 'id');
Documentation: https://lodash.com/docs#uniqBy
For older versions of Lodash (< 4.0.0 ):
Assuming that the data should be uniqued by each object's id
property and your data is stored in data
variable, you can use the _.unique()
function like this:
_.unique(data, function (e) {
return e.id;
});
Or simply like this:
_.uniq(data, 'id');
Do the build job on Jenkins first without Sonar configured. Then add Sonar, and run a build job again. Should fix the problem
To use the Like Button and have the Open Graph inspect your website, you need an application.
So you need to associate the Like Button with a fb:app_id
If you want other users to see the administration page for your website on Facebook you add fb:admins
. So if you are the developer of the application and the website owner there is no need to add fb:admins
From the docs, "Note that from + size
can not be more than the index.max_result_window
index setting which defaults to 10,000". So my admittedly very ad-hoc solution is to just pass size: 10000
or 10,000 minus from if I use the from
argument.
Note that following Matt's comment below, the proper way to do this if you have a larger amount of documents is to use the scroll api. I have used this successfully, but only with the python interface.
If you're looking to paginate results, use the integrated paginator, it works great!
$games = Game::paginate(30);
// $games->results = the 30 you asked for
// $games->links() = the links to next, previous, etc pages
So if you are using bootstrap4 then this will work.
<style>
.tooltip-inner {
white-space: pre-wrap;
}
</style>
<script>
$(function () {
$('[data-toggle="tooltip"]').tooltip()
})
</script>
<a data-toggle="tooltip" data-placement="auto" title=" first line 
 next line" href= ""> Hover me </a>
If you are using in Django project then we can also display dynamic data in tooltips like:
<a class="black-text pb-2 pt-1" data-toggle="tooltip" data-placement="auto" title="{{ post.location }} 
 {{ post.updated_on }}" href= "{% url 'blog:get_user_profile' post.author.id %}">{{ post.author }}</a>
It works for me..
public class ShapeTypes
{
private ShapeTypes() { }
public static string OVAL
{
get
{
return "ov";
}
private set { }
}
public static string SQUARE
{
get
{
return "sq";
}
private set { }
}
public static string RECTANGLE
{
get
{
return "rec";
}
private set { }
}
}
Here's one possible method.
function isMouseInBox(e) {
var textbox = document.getElementById('textbox');
// Box position & sizes
var boxX = textbox.offsetLeft;
var boxY = textbox.offsetTop;
var boxWidth = textbox.offsetWidth;
var boxHeight = textbox.offsetHeight;
// Mouse position comes from the 'mousemove' event
var mouseX = e.pageX;
var mouseY = e.pageY;
if(mouseX>=boxX && mouseX<=boxX+boxWidth) {
if(mouseY>=boxY && mouseY<=boxY+boxHeight){
// Mouse is in the box
return true;
}
}
}
document.addEventListener('mousemove', function(e){
isMouseInBox(e);
})
Everyone is doing this programmily so I thought this answer would fit perfectly here. This code worked for my in the xml. Im NOT thinking about ratio yet, but still wanted to place this answer if it would help anyone.
android:adjustViewBounds="true"
Cheers..
I think the best way is by using TableAdapters rather than using Commands objects, its Update method sends all changes mades (Updates,Inserts and Deletes) inside a Dataset or DataTable straight TO the database. Usually when using a DataGridView you bind to a BindingSource which lets you interact with a DataSource such as Datatables or Datasets.
If you work like this, then on your bounded DataGridView you can just do:
this.customersBindingSource.EndEdit();
this.myTableAdapter.Update(this.myDataSet.Customers);
The 'customersBindingSource' is the DataSource of the DataGridView.
The adapter's Update method will update a single data table and execute the correct command (INSERT, UPDATE, or DELETE) based on the RowState of each data row in the table.
From: https://msdn.microsoft.com/en-us/library/ms171933.aspx
So any changes made inside the DatagridView will be reflected on the Database when using the Update method.
More about TableAdapters: https://msdn.microsoft.com/en-us/library/bz9tthwx.aspx
The only real alternative here is to use some sort of custom widget with a modal option. Have a look at jQuery UI for an example of a dialog with these features. Similar things exist in just about every JS framework you can mention.
Beware. I did this on a development server and wanted to change it later.
I had to clear my caches to change it. In order to avoid this head-scratching in the future, I was able to make it temporary like so:
from django.views.generic import RedirectView
url(r'^source$', RedirectView.as_view(permanent=False,
url='/dest/')),
Try the following.
function getSslPage($url) {
$ch = curl_init();
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt($ch, CURLOPT_HEADER, false);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_REFERER, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
$result = curl_exec($ch);
curl_close($ch);
return $result;
}
Note: This disables SSL verification, meaning the security offered by HTTPS is lost. Only use this code for testing / local development, never on the internet or other public-facing networks. If this code works, it means the SSL certificate isn't trusted or can't be verified, which you should look into fixing as a separate issue.
For me I had to put the whole interval in single quotes not just the value of the interval.
select id,
title,
created_at + interval '1 day' * claim_window as deadline from projects
Instead of
select id,
title,
created_at + interval '1' day * claim_window as deadline from projects
First, you should define "doesn't work".
Second, I assume that your table field 'content' is varchar/text, so you need to enclose it in quotes. content = '{$content}'
And last but not least: use echo mysql_error()
directly after a query to debug.
For me, i make JavaScript redirection to another page to get rid of #_=_
. The ideas below should work. :)
function redirect($url){
echo "<script>window.location.href='{$url}?{$_SERVER["QUERY_STRING"]}'</script>";
}
i like this one, just for style :-)
long swap(long i) {
char *c = (char *) &i;
return * (long *) (char[]) {c[3], c[2], c[1], c[0] };
}
Use this:
mocha server-test
Or if you have subdirectories use this:
mocha "server-test/**/*.js"
Note the use of double quotes. If you omit them you may not be able to run tests in subdirectories.
Does it work if you escape the quoted commas with \ ?
Name, Age, Sex
"Cantor\, Georg", 163,M
Most delimited formats require that their delimiter be escaped in order to properly parse.
A rough Java example:
import java.util.Iterator;
public class CsvTest {
public static void main(String[] args) {
String[] lines = { "Name, Age, Sex", "\"Cantor, Georg\", 163, M" };
StringBuilder result = new StringBuilder();
for (String head : iterator(lines[0])) {
result.append(String.format("<tr>%s</tr>\n", head));
}
for (int i=1; i < lines.length; i++) {
for (String row : iterator(lines[i])) {
result.append(String.format("<td>%s</td>\n", row));
}
}
System.out.println(String.format("<table>\n%s</table>", result.toString()));
}
public static Iterable<String> iterator(final String line) {
return new Iterable<String>() {
public Iterator<String> iterator() {
return new Iterator<String>() {
private int position = 0;
public boolean hasNext() {
return position < line.length();
}
public String next() {
boolean inquote = false;
StringBuilder buffer = new StringBuilder();
for (; position < line.length(); position++) {
char c = line.charAt(position);
if (c == '"') {
inquote = !inquote;
}
if (c == ',' && !inquote) {
position++;
break;
} else {
buffer.append(c);
}
}
return buffer.toString().trim();
}
public void remove() {
throw new UnsupportedOperationException();
}
};
}
};
}
}
It's simply “No such directory entry”. Since directory entries can be directories or files (or symlinks, or sockets, or pipes, or devices), the name ENOFILE
would have been too narrow in its meaning.
For those using yarn.
I tried using npm shrinkwrap until I discovered the yarn cli ignored my npm-shrinkwrap.json file.
Yarn has https://yarnpkg.com/lang/en/docs/selective-version-resolutions/ for this. Neat.
Check out this answer too: https://stackoverflow.com/a/41082766/3051080
inside onstart command put START_STICKY
... This service won't kill unless it is doing too much task and kernel wants to kill it for it...
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
Log.i("LocalService", "Received start id " + startId + ": " + intent);
// We want this service to continue running until it is explicitly
// stopped, so return sticky.
return START_STICKY;
}
Nice one-liner HTML only:
<input type="text" id='nameInput' onkeypress='return ((event.charCode >= 65 && event.charCode <= 90) || (event.charCode >= 97 && event.charCode <= 122) || (event.charCode == 32))'>
Depending on your situation, I think this is the best approach below.
final maxWidth = MediaQuery.of(context).size.width * 0.4;
Container(
textAlign: TextAlign.center),
child: Text('This is long text',
constraints: BoxConstraints(maxWidth: maxWidth),
),
%USERNAME% will get you the username of the currently running process. Depending on how you are running your batch file, this is not necessarily the same as the name of the current user. For example, you might be running your batch file through a scheduled task, from a service, etc.
Here is a more sure way of getting the username of the currently logged on user by scraping the name of the user that started the explorer.exe task:
for /f "TOKENS=1,2,*" %%a in ('tasklist /FI "IMAGENAME eq explorer.exe" /FO LIST /V') do if /i "%%a %%b"=="User Name:" set _currdomain_user=%%c
for /f "TOKENS=1,2 DELIMS=\" %%a in ("%_currdomain_user%") do set _currdomain=%%a & set _curruser=%%b
This is a simple way that works for me.
sudo ln -s /usr/bin/python3 /usr/bin/python
You could change /usr/bin/python3
for your path to python3 (or the version you want).
But keep in mind that update-alternatives
is probably the best choice.
If htaccess is an option this will make all PDF links download instead of opening in browser
<FilesMatch "\.(?i:pdf)$">
ForceType application/octet-stream
Header set Content-Disposition attachment
</FilesMatch>
If you want midnight (0:00am) for the current date, you can just use the default constructor and zero out the time portions:
Date today = new Date();
today.setHours(0); today.setMinutes(0); today.setSeconds(0);
edit: update with Calendar
since those methods are deprecated
Calendar today = Calendar.getInstance();
today.clear(Calendar.HOUR); today.clear(Calendar.MINUTE); today.clear(Calendar.SECOND);
Date todayDate = today.getTime();
Angular's own ng-Router takes URLs
into consideration while routing, UI-Router takes states
in addition to URLs.
States are bound to named, nested and parallel views, allowing you to powerfully manage your application's interface.
While in ng-router, you have to be very careful about URLs when providing links via <a href="">
tag, in UI-Router you have to only keep state
in mind. You provide links like <a ui-sref="">
. Note that even if you use <a href="">
in UI-Router, just like you would do in ng-router, it will still work.
So, even if you decide to change your URL some day, your state
will remain same and you need to change URL only at .config
.
While ngRouter can be used to make simple apps, UI-Router makes development much easier for complex apps. Here its wiki.
I've collected all the answers on this question and came up with function to detect if Android is running on a vm/emulator:
public boolean isvm(){
StringBuilder deviceInfo = new StringBuilder();
deviceInfo.append("Build.PRODUCT " +Build.PRODUCT +"\n");
deviceInfo.append("Build.FINGERPRINT " +Build.FINGERPRINT+"\n");
deviceInfo.append("Build.MANUFACTURER " +Build.MANUFACTURER+"\n");
deviceInfo.append("Build.MODEL " +Build.MODEL+"\n");
deviceInfo.append("Build.BRAND " +Build.BRAND+"\n");
deviceInfo.append("Build.DEVICE " +Build.DEVICE+"\n");
String info = deviceInfo.toString();
Log.i("LOB", info);
Boolean isvm = false;
if(
"google_sdk".equals(Build.PRODUCT) ||
"sdk_google_phone_x86".equals(Build.PRODUCT) ||
"sdk".equals(Build.PRODUCT) ||
"sdk_x86".equals(Build.PRODUCT) ||
"vbox86p".equals(Build.PRODUCT) ||
Build.FINGERPRINT.contains("generic") ||
Build.MANUFACTURER.contains("Genymotion") ||
Build.MODEL.contains("Emulator") ||
Build.MODEL.contains("Android SDK built for x86")
){
isvm = true;
}
if(Build.BRAND.contains("generic")&&Build.DEVICE.contains("generic")){
isvm = true;
}
return isvm;
}
Tested on Emulator, Genymotion and Bluestacks (1 October 2015).
I came across this recently, it certainly helped me understand: https://www.cs.ryerson.ca/~aharley/vis/conv/
So there's an input, a Conv2D, MaxPooling2D etc, the Flatten layers are at the end and show exactly how they are formed and how they go on to define the final classifications (0-9).
The standard numpy function for what you want is np.column_stack
:
>>> np.column_stack(([1, 2, 3], [4, 5, 6]))
array([[1, 4],
[2, 5],
[3, 6]])
So with your portfolio
and index
arrays, doing
np.column_stack((portfolio, index))
would yield something like:
[[portfolio_value1, index_value1],
[portfolio_value2, index_value2],
[portfolio_value3, index_value3],
...]
I would handle it like so:
$(document).ready(function() {
$('input[type="radio"]').click(function() {
if($(this).attr('id') == 'watch-me') {
$('#show-me').show();
}
else {
$('#show-me').hide();
}
});
});
This worked for me:
Go to
Control Panel\System and Security\System
select
Advanced system settings from the left panel
from Advanced tab click on Environment Variables
In the System variables section search for (create if doesn't exist)
PYTHONPATH
and set
C:\Python27\;C:\Python27\Scripts;
or your desired version
You need to restart CMD.
In case it still doesn't work you might want to leave in the PATH variable only your desired version.
This kind of code perhaps should work for You
SELECT
*,
CASE
WHEN (pvc IS NULL OR pvc = '') AND (datepose < 1980) THEN '01'
WHEN (pvc IS NULL OR pvc = '') AND (datepose >= 1980) THEN '02'
WHEN (pvc IS NULL OR pvc = '') AND (datepose IS NULL OR datepose = 0) THEN '03'
ELSE '00'
END AS modifiedpvc
FROM my_table;
gid | datepose | pvc | modifiedpvc
-----+----------+-----+-------------
1 | 1961 | 01 | 00
2 | 1949 | | 01
3 | 1990 | 02 | 00
1 | 1981 | | 02
1 | | 03 | 00
1 | | | 03
(6 rows)
I think you can use methods of the str
type to do this. There's no need for regular expressions:
def remove_prefix(text, prefix):
if text.startswith(prefix): # only modify the text if it starts with the prefix
text = text.replace(prefix, "", 1) # remove one instance of prefix
return text
A friend function is not a member function, so the problem is that you declare operator<<
as a friend of A
:
friend ostream& operator<<(ostream&, A&);
then try to define it as a member function of the class logic
ostream& logic::operator<<(ostream& os, A& a)
^^^^^^^
Are you confused about whether logic
is a class or a namespace?
The error is because you've tried to define a member operator<<
taking two arguments, which means it takes three arguments including the implicit this
parameter. The operator can only take two arguments, so that when you write a << b
the two arguments are a
and b
.
You want to define ostream& operator<<(ostream&, const A&)
as a non-member function, definitely not as a member of logic
since it has nothing to do with that class!
std::ostream& operator<<(std::ostream& os, const A& a)
{
return os << a.number;
}
Because it's more common to call range(0, 10)
which returns [0,1,2,3,4,5,6,7,8,9]
which contains 10 elements which equals len(range(0, 10))
. Remember that programmers prefer 0-based indexing.
Also, consider the following common code snippet:
for i in range(len(li)):
pass
Could you see that if range()
went up to exactly len(li)
that this would be problematic? The programmer would need to explicitly subtract 1. This also follows the common trend of programmers preferring for(int i = 0; i < 10; i++)
over for(int i = 0; i <= 9; i++)
.
If you are calling range with a start of 1 frequently, you might want to define your own function:
>>> def range1(start, end):
... return range(start, end+1)
...
>>> range1(1, 10)
[1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
export const a = 1;
export const b = 2;
export const c = 3;
This will work w/ Babel transforms today and should take advantage of all the benefits of ES2016 modules whenever that feature actually lands in a browser.
You can also add export default {a, b, c};
which will allow you to import all the values as an object w/o the * as
, i.e. import myModule from 'my-module';
Sources:
You better use the override onPrepareOptionsMenu
menu.Clear ();
if (TabActual == TabSelec.Anuncio)
{
menu.Add(10, 11, 0, "Crear anuncio");
menu.Add(10, 12, 1, "Modificar anuncio");
menu.Add(10, 13, 2, "Eliminar anuncio");
menu.Add(10, 14, 3, "Actualizar");
}
if (TabActual == TabSelec.Fotos)
{
menu.Add(20, 21, 0, "Subir foto");
menu.Add(20, 22, 1, "Actualizar");
}
if (TabActual == TabSelec.Comentarios)
{
menu.Add(30, 31, 0, "Actualizar");
}
Here an example
You can also use
SELECT @curRow := ifnull(@curRow,0) + 1 Row, ...
to initialise the counter variable.
Python is a dynamic, strongly typed, object oriented, multipurpose programming language, designed to be quick (to learn, to use, and to understand), and to enforce a clean and uniform syntax.
a = 5
makes the variable name a
to refer to the integer 5. Later, a = "hello"
makes the variable name a
to refer to a string containing "hello". Static typed languages would have you declare int a
and then a = 5
, but assigning a = "hello"
would have been a compile time error. On one hand, this makes everything more unpredictable (you don't know what a
refers to). On the other hand, it makes very easy to achieve some results a static typed languages makes very difficult.a = "5"
(the string whose value is '5') will remain a string, and never coerced to a number if the context requires so. Every type conversion in python must be done explicitly. This is different from, for example, Perl or Javascript, where you have weak typing, and can write things like "hello" + 5
to get "hello5"
.Python can be used for any programming task, from GUI programming to web programming with everything else in between. It's quite efficient, as much of its activity is done at the C level. Python is just a layer on top of C. There are libraries for everything you can think of: game programming and openGL, GUI interfaces, web frameworks, semantic web, scientific computing...
//create TreeMap instance
TreeMap treeMap = new TreeMap();
//add key value pairs to TreeMap
treeMap.put("1","One");
treeMap.put("2","Two");
treeMap.put("3","Three");
/*
get Collection of values contained in TreeMap using
Collection values()
*/
Collection c = treeMap.values();
//obtain an Iterator for Collection
Iterator itr = c.iterator();
//iterate through TreeMap values iterator
while(itr.hasNext())
System.out.println(itr.next());
or:
for (Map.Entry<K,V> entry : treeMap.entrySet()) {
V value = entry.getValue();
K key = entry.getKey();
}
or:
// Use iterator to display the keys and associated values
System.out.println("Map Values Before: ");
Set keys = map.keySet();
for (Iterator i = keys.iterator(); i.hasNext();) {
Integer key = (Integer) i.next();
String value = (String) map.get(key);
System.out.println(key + " = " + value);
}
I don't know which version of Python you are using but I tried this in Python 3 and made a few changes and it looks like it works. The raw_input function seems to be the issue here. I changed all the raw_input functions to "input()" and I also made minor changes to the printing to be compatible with Python 3. AJ Uppal is correct when he says that you shouldn't name a variable and a function with the same name. See here for reference:
TypeError: 'int' object is not callable
My code for Python 3 is as follows:
# https://stackoverflow.com/questions/27097039/why-am-i-getting-a-traceback-most-recent-call-last-error
raw_input = 0
M = 1.6
# Miles to Kilometers
# Celsius Celsius = (var1 - 32) * 5/9
# Gallons to liters Gallons = 3.6
# Pounds to kilograms Pounds = 0.45
# Inches to centimete Inches = 2.54
def intro():
print("Welcome! This program will convert measures for you.")
main()
def main():
print("Select operation.")
print("1.Miles to Kilometers")
print("2.Fahrenheit to Celsius")
print("3.Gallons to liters")
print("4.Pounds to kilograms")
print("5.Inches to centimeters")
choice = input("Enter your choice by number: ")
if choice == '1':
convertMK()
elif choice == '2':
converCF()
elif choice == '3':
convertGL()
elif choice == '4':
convertPK()
elif choice == '5':
convertPK()
else:
print("Error")
def convertMK():
input_M = float(input(("Miles: ")))
M_conv = (M) * input_M
print("Kilometers: {M_conv}\n")
restart = str(input("Do you wish to make another conversion? [y]Yes or [n]no: "))
if restart == 'y':
main()
elif restart == 'n':
end()
else:
print("I didn't quite understand that answer. Terminating.")
main()
def converCF():
input_F = float(input(("Fahrenheit: ")))
F_conv = (input_F - 32) * 5/9
print("Celcius: {F_conv}\n")
restart = str(input("Do you wish to make another conversion? [y]Yes or [n]no: "))
if restart == 'y':
main()
elif restart == 'n':
end()
else:
print("I didn't quite understand that answer. Terminating.")
main()
def convertGL():
input_G = float(input(("Gallons: ")))
G_conv = input_G * 3.6
print("Centimeters: {G_conv}\n")
restart = str(input("Do you wish to make another conversion? [y]Yes or [n]no: "))
if restart == 'y':
main()
elif restart == 'n':
end()
else:
print ("I didn't quite understand that answer. Terminating.")
main()
def convertPK():
input_P = float(input(("Pounds: ")))
P_conv = input_P * 0.45
print("Centimeters: {P_conv}\n")
restart = str(input("Do you wish to make another conversion? [y]Yes or [n]no: "))
if restart == 'y':
main()
elif restart == 'n':
end()
else:
print ("I didn't quite understand that answer. Terminating.")
main()
def convertIC():
input_cm = float(input(("Inches: ")))
inches_conv = input_cm * 2.54
print("Centimeters: {inches_conv}\n")
restart = str(input("Do you wish to make another conversion? [y]Yes or [n]no: "))
if restart == 'y':
main()
elif restart == 'n':
end()
else:
print ("I didn't quite understand that answer. Terminating.")
main()
def end():
print("This program will close.")
exit()
intro()
I noticed a small bug in your code as well. This function should ideally convert pounds to kilograms but it looks like when it prints, it is printing "Centimeters" instead of kilograms.
def convertPK():
input_P = float(input(("Pounds: ")))
P_conv = input_P * 0.45
# Printing error in the line below
print("Centimeters: {P_conv}\n")
restart = str(input("Do you wish to make another conversion? [y]Yes or [n]no: "))
if restart == 'y':
main()
elif restart == 'n':
end()
else:
print ("I didn't quite understand that answer. Terminating.")
main()
I hope this helps.
In my case below code
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item android:top="10dp" android:bottom="-10dp"
>
<shape android:shape="rectangle">
<solid android:color="@color/maincolor" />
<corners
android:topLeftRadius="10dp"
android:topRightRadius="10dp"
android:bottomLeftRadius="0dp"
android:bottomRightRadius="0dp"
/>
</shape>
</item>
</layer-list>
If you want to be relax for installing libraries for python.
You should using pip
, that is python installer package.
To install pip:
Download ez_setup.py and then run:
python ez_setup.py
Then download get-pip.py and run:
python get-pip.py
upgrade installed setuptools
by pip:
pip install setuptools --upgrade
If you got this error:
Wheel installs require setuptools >= 0.8 for dist-info support.
pip's wheel support requires setuptools >= 0.8 for dist-info support.
Add --no-use-wheel
to above cmd:
pip install setuptools --no-use-wheel --upgrade
Now, you can install libraries for python, just by:
pip install library_name
For example:
pip install requests
Note that to install some library may they need to compile, so you need to have compiler.
On windows there is a site for Unofficial Windows Binaries for Python Extension Packages that have huge python packages and complied python packages for windows.
For example to install pip
using this site, just download and install setuptools and pip installer from that.
There are many ways to do it. here are some of them:
$("._statusDDL").val('2');
OR
$('select').prop('selectedIndex', 3);
Transient
Scoped
Singleton
Use Singletons where you need to maintain application wide state. Application configuration or parameters, Logging Service, caching of data is some of the examples where you can use singletons.
Process proc = new Process();
ProcessStartInfo info =
new ProcessStartInfo("Your Process name".exe, "Arguments");
info.WindowStyle = ProcessWindowStyle.Hidden;
info.UseShellExecute =true;
info.Verb ="runas";
proc.StartInfo = info;
proc.Start();
You need to copy the dependency you need for project.
Having these in hand please clear all the <dependency>
tag embedded into <dependencies>
tag
from POM.XML file in your project.
After saving the file you will not see Maven Dependencies in your Libraries
.
Then please paste those <dependency>
you have copied earlier.
The required jars will be automatically downloaded by Maven, you can see that too in
the generated Maven Dependencies Libraries
after saving the file.
Thanks.