list(your_iterator)
You ask specifically about map()
, filter()
and reduce()
, but I assume you want to know about functional programming in general. Having tested this myself on the problem of computing distances between all points within a set of points, functional programming (using the starmap
function from the built-in itertools
module) turned out to be slightly slower than for-loops (taking 1.25 times as long, in fact). Here is the sample code I used:
import itertools, time, math, random
class Point:
def __init__(self,x,y):
self.x, self.y = x, y
point_set = (Point(0, 0), Point(0, 1), Point(0, 2), Point(0, 3))
n_points = 100
pick_val = lambda : 10 * random.random() - 5
large_set = [Point(pick_val(), pick_val()) for _ in range(n_points)]
# the distance function
f_dist = lambda x0, x1, y0, y1: math.sqrt((x0 - x1) ** 2 + (y0 - y1) ** 2)
# go through each point, get its distance from all remaining points
f_pos = lambda p1, p2: (p1.x, p2.x, p1.y, p2.y)
extract_dists = lambda x: itertools.starmap(f_dist,
itertools.starmap(f_pos,
itertools.combinations(x, 2)))
print('Distances:', list(extract_dists(point_set)))
t0_f = time.time()
list(extract_dists(large_set))
dt_f = time.time() - t0_f
Is the functional version faster than the procedural version?
def extract_dists_procedural(pts):
n_pts = len(pts)
l = []
for k_p1 in range(n_pts - 1):
for k_p2 in range(k_p1, n_pts):
l.append((pts[k_p1].x - pts[k_p2].x) ** 2 +
(pts[k_p1].y - pts[k_p2].y) ** 2)
return l
t0_p = time.time()
list(extract_dists_procedural(large_set))
# using list() on the assumption that
# it eats up as much time as in the functional version
dt_p = time.time() - t0_p
f_vs_p = dt_p / dt_f
if f_vs_p >= 1.0:
print('Time benefit of functional progamming:', f_vs_p,
'times as fast for', n_points, 'points')
else:
print('Time penalty of functional programming:', 1 / f_vs_p,
'times as slow for', n_points, 'points')
If you're using long lists, it appears the list comprehension's faster, not to mention more readable.
~$ python -mtimeit -s"mylist = ['a','b','c','d']" "list(enumerate(mylist))"
1000000 loops, best of 3: 1.61 usec per loop
~$ python -mtimeit -s"mylist = ['a','b','c','d']" "[(i, j) for i, j in enumerate(mylist)]"
1000000 loops, best of 3: 0.978 usec per loop
~$ python -mtimeit -s"mylist = ['a','b','c','d']" "[t for t in enumerate(mylist)]"
1000000 loops, best of 3: 0.767 usec per loop
A list comprehension is likely the cleanest way:
>>> L = [0, 23, 234, 89, None, 0, 35, 9
>>> [x for x in L if x is not None]
[0, 23, 234, 89, 0, 35, 9]
There is also a functional programming approach but it is more involved:
>>> from operator import is_not
>>> from functools import partial
>>> L = [0, 23, 234, 89, None, 0, 35, 9]
>>> list(filter(partial(is_not, None), L))
[0, 23, 234, 89, 0, 35, 9]
[x if x % 2 else x * 100 for x in range(1, 10) ]
If I'm correct in thinking that you want to find the minimum value of a function for all possible pairs of 2 elements from a list...
l = [1,2,3,4,5]
def f(i,j):
return i+j
# Prints min value of f(i,j) along with i and j
print min( (f(i,j),i,j) for i in l for j in l)
Additionally, you could use just the same variable for the member of the input list which is currently accessed and for the element inside this member. However, this might even make it more (list) incomprehensible.
input = [[1, 2], [3, 4]]
[x for x in input for x in x]
First for x in input
is evaluated, leading to one member list of the input, then, Python walks through the second part for x in x
during which the x-value is overwritten by the current element it is accessing, then the first x
defines what we want to return.
This is not a lambda function. It is a list comprehension.
Just change the order:
[ y for y in a if y not in b]
Off the top of my head, you can eliminate the lambda:
reduce(list.__add__, map(list, [mi.image_set.all() for mi in list_of_menuitems]))
Or even eliminate the map, since you've already got a list-comp:
reduce(list.__add__, [list(mi.image_set.all()) for mi in list_of_menuitems])
You can also just express this as a sum of lists:
sum([list(mi.image_set.all()) for mi in list_of_menuitems], [])
If you want a list of lists:
>>> [list(t) for t in zip(*l)]
[[1, 3, 8], [2, 4, 9]]
If a list of tuples is OK:
>>> zip(*l)
[(1, 3, 8), (2, 4, 9)]
Assuming you are using Python 3.x:
print(*myList, sep='\n')
You can get the same behavior on Python 2.x using from __future__ import print_function
, as noted by mgilson in comments.
With the print statement on Python 2.x you will need iteration of some kind, regarding your question about print(p) for p in myList
not working, you can just use the following which does the same thing and is still one line:
for p in myList: print p
For a solution that uses '\n'.join()
, I prefer list comprehensions and generators over map()
so I would probably use the following:
print '\n'.join(str(p) for p in myList)
I believe it's simply for the sake of clarity, we do not want to clutter the language with too many different symbols. Also a tuple
comprehension is never necessary, a list can just be used instead with negligible speed differences, unlike a dict comprehension as opposed to a list comprehension.
Create List of Single Item Repeated n Times in Python
Depending on your use-case, you want to use different techniques with different semantics.
For immutable items, like None, bools, ints, floats, strings, tuples, or frozensets, you can do it like this:
[e] * 4
Note that this is usually only used with immutable items (strings, tuples, frozensets, ) in the list, because they all point to the same item in the same place in memory. I use this frequently when I have to build a table with a schema of all strings, so that I don't have to give a highly redundant one to one mapping.
schema = ['string'] * len(columns)
Multiplying a list gives us the same elements over and over. The need for this is rare:
[iter(iterable)] * 4
This is sometimes used to map an iterable into a list of lists:
>>> iterable = range(12)
>>> a_list = [iter(iterable)] * 4
>>> [[next(l) for l in a_list] for i in range(3)]
[[0, 1, 2, 3], [4, 5, 6, 7], [8, 9, 10, 11]]
We can see that a_list
contains the same range iterator four times:
>>> a_list
[<range_iterator object at 0x7fde73a5da20>, <range_iterator object at 0x7fde73a5da20>, <range_iterator object at 0x7fde73a5da20>, <range_iterator object at 0x7fde73a5da20>]
I've used Python for a long time now, and I have seen very few use-cases where I would do the above with mutable objects.
Instead, to get, say, a mutable empty list, set, or dict, you should do something like this:
list_of_lists = [[] for _ in columns]
The underscore is simply a throwaway variable name in this context.
If you only have the number, that would be:
list_of_lists = [[] for _ in range(4)]
The _
is not really special, but your coding environment style checker will probably complain if you don't intend to use the variable and use any other name.
Beware doing this with mutable objects, when you change one of them, they all change because they're all the same object:
foo = [[]] * 4
foo[0].append('x')
foo now returns:
[['x'], ['x'], ['x'], ['x']]
But with immutable objects, you can make it work because you change the reference, not the object:
>>> l = [0] * 4
>>> l[0] += 1
>>> l
[1, 0, 0, 0]
>>> l = [frozenset()] * 4
>>> l[0] |= set('abc')
>>> l
[frozenset(['a', 'c', 'b']), frozenset([]), frozenset([]), frozenset([])]
But again, mutable objects are no good for this, because in-place operations change the object, not the reference:
l = [set()] * 4
>>> l[0] |= set('abc')
>>> l
[set(['a', 'c', 'b']), set(['a', 'c', 'b']), set(['a', 'c', 'b']), set(['a', 'c', 'b'])]
In Python 3 and Python 2.7+, dictionary comprehensions look like the below:
d = {k:v for k, v in iterable}
For Python 2.6 or earlier, see fortran's answer.
your list comphresnion will, work but will return list of None because append return None:
demo:
>>> a=[]
>>> [ a.append(x) for x in range(10) ]
[None, None, None, None, None, None, None, None, None, None]
>>> a
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
better way to use it like this:
>>> a= [ x for x in range(10) ]
>>> a
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
The main purpose of a list comprehension is to create a new list based on another one without changing or destroying the original list.
Instead of writing
l = []
for n in range(1, 11):
l.append(n)
or
l = [n for n in range(1, 11)]
you should write only
l = range(1, 11)
In the two top code blocks you're creating a new list, iterating through it and just returning each element. It's just an expensive way of creating a list copy.
To get a new dictionary with all keys set to the same value based on another dict, do this:
old_dict = {'a': 1, 'c': 3, 'b': 2}
new_dict = { key:'your value here' for key in old_dict.keys()}
You're receiving a SyntaxError because when you write
d = {}
d[i for i in range(1, 11)] = True
you're basically saying: "Set my key 'i for i in range(1, 11)' to True" and "i for i in range(1, 11)" is not a valid key, it's just a syntax error. If dicts supported lists as keys, you would do something like
d[[i for i in range(1, 11)]] = True
and not
d[i for i in range(1, 11)] = True
but lists are not hashable, so you can't use them as dict keys.
Here is how you would do this with a nested list comprehension:
[[float(y) for y in x] for x in l]
This would give you a list of lists, similar to what you started with except with floats instead of strings. If you want one flat list then you would use [float(y) for x in l for y in x]
.
From the Python documentation itself, you can use max
:
>>> mylist = ['123','123456','1234']
>>> print max(mylist, key=len)
123456
When creating a generator from a mutable object (like a list) be aware that the generator will get evaluated on the state of the list at time of using the generator, not at time of the creation of the generator:
>>> mylist = ["a", "b", "c"]
>>> gen = (elem + "1" for elem in mylist)
>>> mylist.clear()
>>> for x in gen: print (x)
# nothing
If there is any chance of your list getting modified (or a mutable object inside that list) but you need the state at creation of the generator you need to use a list comprehension instead.
You could move the conditional to:
v = [22, 13, 45, 50, 98, 69, 43, 44, 1]
[ (x+1 if x >=45 else x+5) for x in v ]
But it's starting to look a little ugly, so you might be better off using a normal loop. Note that I used v
instead of l
for the list variable to reduce confusion with the number 1 (I think l
and O
should be avoided as variable names under any circumstances, even in quick-and-dirty example code).
Image Source: Experfy
You can see for yourself which is better between - List Comprehension and the Map Function
(List Comprehension takes lesser time to process 1 million records when compared to a map function)
Hope it helps! Good Luck :)
Found this one:
[x for (i,x) in enumerate(my_list) if my_list[i] == "two"]
Will print:
["two"]
Great answers, but just wanted to mention a gotcha that "pass" keyword will not work in the if/else part of the list-comprehension (as posted in the examples mentioned above).
#works
list1 = [10, 20, 30, 40, 50]
newlist2 = [x if x > 30 else x**2 for x in list1 ]
print(newlist2, type(newlist2))
#but this WONT work
list1 = [10, 20, 30, 40, 50]
newlist2 = [x if x > 30 else pass for x in list1 ]
print(newlist2, type(newlist2))
This is tried and tested on python 3.4. Error is as below:
newlist2 = [x if x > 30 else pass for x in list1 ]
SyntaxError: invalid syntax
So, try to avoid pass-es in list comprehensions
Is there a prize for being lazy and using the transpose function of NumPy arrays? ;)
import numpy as np
a = np.array([(1,2,3), (4,5,6)])
b = a.transpose()
The best way to remember this is that the order of for loop inside the list comprehension is based on the order in which they appear in traditional loop approach. Outer most loop comes first, and then the inner loops subsequently.
So, the equivalent list comprehension would be:
[entry for tag in tags for entry in entries if tag in entry]
In general, if-else
statement comes before the first for loop, and if you have just an if
statement, it will come at the end. For e.g, if you would like to add an empty list, if tag
is not in entry, you would do it like this:
[entry if tag in entry else [] for tag in tags for entry in entries]
Use this site: https://rawgit.com , it works for me as I don't have permission issue with the svg file.
Please pay attention that RawGit is not a service of github, as mentioned in Rawgit FAQ :
RawGit is not associated with GitHub in any way. Please don't contact GitHub asking for help with RawGit
Enter the url of svg you need, such as :
https://github.com/sel-fish/redis-experiments/blob/master/dat/memDistrib-jemalloc-4.0.3.svg
Then, you can get the url bellow which can be used to display:
https://cdn.rawgit.com/sel-fish/redis-experiments/master/dat/memDistrib-jemalloc-4.0.3.svg
Building on Lucas's answer above, this is an overload that takes a controller name as parameter, similar to ActionLink. Use this overload when your image links to an Action in a different controller.
// Extension method
public static MvcHtmlString ActionImage(this HtmlHelper html, string action, string controllerName, object routeValues, string imagePath, string alt)
{
var url = new UrlHelper(html.ViewContext.RequestContext);
// build the <img> tag
var imgBuilder = new TagBuilder("img");
imgBuilder.MergeAttribute("src", url.Content(imagePath));
imgBuilder.MergeAttribute("alt", alt);
string imgHtml = imgBuilder.ToString(TagRenderMode.SelfClosing);
// build the <a> tag
var anchorBuilder = new TagBuilder("a");
anchorBuilder.MergeAttribute("href", url.Action(action, controllerName, routeValues));
anchorBuilder.InnerHtml = imgHtml; // include the <img> tag inside
string anchorHtml = anchorBuilder.ToString(TagRenderMode.Normal);
return MvcHtmlString.Create(anchorHtml);
}
The answer of @wmantly is basicly 'the same' as I would go for at this moment.
Don't use <form>
tags at all and prevent 'inappropiate' tag nesting.
Use javascript (in this case jQuery) to do the posting of the data, mostly you will do it with javascript, because only one row had to be updated and feedback must be given without refreshing the whole page (if refreshing the whole page, it's no use to go through all these trobules to only post a single row).
I attach a click handler to a 'update' anchor at each row, that will trigger the collection and 'submit' of the fields on the same row. With an optional data-action
attribute on the anchor tag the target url of the POST can be specified.
Example html
<table>
<tbody>
<tr>
<td><input type="hidden" name="id" value="row1"/><input name="textfield" type="text" value="input1" /></td>
<td><select name="selectfield">
<option selected value="select1-option1">select1-option1</option>
<option value="select1-option2">select1-option2</option>
<option value="select1-option3">select1-option3</option>
</select></td>
<td><a class="submit" href="#" data-action="/exampleurl">Update</a></td>
</tr>
<tr>
<td><input type="hidden" name="id" value="row2"/><input name="textfield" type="text" value="input2" /></td>
<td><select name="selectfield">
<option selected value="select2-option1">select2-option1</option>
<option value="select2-option2">select2-option2</option>
<option value="select2-option3">select2-option3</option>
</select></td>
<td><a class="submit" href="#" data-action="/different-url">Update</a></td>
</tr>
<tr>
<td><input type="hidden" name="id" value="row3"/><input name="textfield" type="text" value="input3" /></td>
<td><select name="selectfield">
<option selected value="select3-option1">select3-option1</option>
<option value="select3-option2">select3-option2</option>
<option value="select3-option3">select3-option3</option>
</select></td>
<td><a class="submit" href="#">Update</a></td>
</tr>
</tbody>
</table>
Example script
$(document).ready(function(){
$(".submit").on("click", function(event){
event.preventDefault();
var url = ($(this).data("action") === "undefined" ? "/" : $(this).data("action"));
var row = $(this).parents("tr").first();
var data = row.find("input, select, radio").serialize();
$.post(url, data, function(result){ console.log(result); });
});
});
A JSFIddle
There is also dialog
and the KDE version kdialog
. dialog
is used by slackware, so it might not be immediately available on other distributions.
My answer is quite easy:
Use Entity Framework for communication between C# and your SQL database. That will make parameterized SQL strings that isn't vulnerable to SQL injection.
As a bonus, it's very easy to work with as well.
Try something like:
B = np.reshape(A,(-1,ncols))
You'll need to make sure that you can divide the number of elements in your array by ncols
though. You can also play with the order in which the numbers are pulled into B
using the order
keyword.
You need to add sudo . I did the following to get it installed :
sudo apt-get install libsm6 libxrender1 libfontconfig1
and then did that (optional! maybe you won't need it)
sudo python3 -m pip install opencv-contrib-python
FINALLY got it done !
-----> pip install gensim config --global http.sslVerify false
Just install any package with the "config --global http.sslVerify false" statement
You can ignore SSL errors by setting pypi.org
and files.pythonhosted.org
as trusted hosts.
$ pip install --trusted-host pypi.org --trusted-host files.pythonhosted.org <package_name>
Note: Sometime during April 2018, the Python Package Index was migrated from pypi.python.org
to pypi.org
. This means "trusted-host" commands using the old domain no longer work.
Since the release of pip 10.0, you should be able to fix this permanently just by upgrading pip
itself:
$ pip install --trusted-host pypi.org --trusted-host files.pythonhosted.org pip setuptools
Or by just reinstalling it to get the latest version:
$ curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py
(… and then running get-pip.py
with the relevant Python interpreter).
pip install <otherpackage>
should just work after this. If not, then you will need to do more, as explained below.
You may want to add the trusted hosts and proxy to your config file.
pip.ini
(Windows) or pip.conf
(unix)
[global]
trusted-host = pypi.python.org
pypi.org
files.pythonhosted.org
Alternate Solutions (Less secure)
Most of the answers could pose a security issue.
Two of the workarounds that help in installing most of the python packages with ease would be:
easy_install <package_name>
. Note that some packages won't be found or will give small errors.pip install wheel_package_name.whl
to install the package.docker-compose up --build
OR
docker-compose build --no-cache
The following sample looks recursively for your search string
in the *.xml
and *.js
files located somewhere inside the folders path1
, path2
and path3
.
grep -r --include=*.xml --include=*.js "your search string" path1 path2 path3
So you can search in a subset of the files for many directories, just providing the paths at the end.
This question came up on stackexchange security, one of the suggestions was to use Keystore explorer
Having just tried it, it works really well and I strongly recommend it.
The function strip
will remove whitespace from the beginning and end of a string.
my_str = " text "
my_str = my_str.strip()
will set my_str
to "text"
.
val array2 = array :+ 4
//Array(1, 2, 3, 4)
Works also "reversed":
val array2 = 4 +: array
Array(4, 1, 2, 3)
There is also an "in-place" version:
var array = Array( 1, 2, 3 )
array +:= 4
//Array(4, 1, 2, 3)
array :+= 0
//Array(4, 1, 2, 3, 0)
With PictureBox1
.Visible = False
.Width = TextBox1.Width + 4
.Height = TextBox1.Height + 4
.Left = TextBox1.Left - 2
.Top = TextBox1.Top - 2
.SendToBack()
.Visible = True
End With
This method should handle filenames which have any number/combination of spaces in them...
svn status /home/websites/website1 | grep -Z "^?" | sed s/^?// | sed s/[[:space:]]*// | xargs -i svn add \"{}\"
Here is an explanation of what that command does:
Use the -i argument to xargs to handle being able to import files names with spaces into 'svn add' - basically, -i sets {} to be used as a placeholder so we can put the " characters around the filename used by 'svn add'.
An advantage of this method is that this should handle filenames with spaces in them.
I'm using the following sql to find entries in all_synonyms where there is no corresponding object for the object_name (in user_objects):
select *
from all_synonyms
where table_owner = 'SCOTT'
and synonym_name not like '%/%'
and table_name not in (
select object_name from user_objects
where object_type in (
'TABLE', 'VIEW', 'PACKAGE', 'SEQUENCE',
'PROCEDURE', 'FUNCTION', 'TYPE'
)
);
There is an easy way for doing this using git-cli
gh pr checkout {<number> | <url> | <branch>}
Reference: https://cli.github.com/manual/gh_pr_checkout
In my scenario I only wanted to remove a specific username/password from the list which had many other saved connections I didn't want to forget. It turns out the SqlStudio.bin
file others are discussing here is a .NET binary serialization of the Microsoft.SqlServer.Management.UserSettings.SqlStudio
class, which can be deserialized, modified and reserialized to modify specific settings.
To accomplish removal of the specific login, I created a new C# .Net 4.6.1 console application and added a reference to the namespace which is located in the following dll: C:\Program Files (x86)\Microsoft SQL Server\130\Tools\Binn\ManagementStudio\Microsoft.SqlServer.Management.UserSettings.dll
(your path may differ slightly depending on SSMS version)
From there I could easily create and modify the settings as desired:
using System.IO;
using System.Runtime.Serialization.Formatters.Binary;
using Microsoft.SqlServer.Management.UserSettings;
class Program
{
static void Main(string[] args)
{
var settingsFile = new FileInfo(@"C:\Users\%username%\AppData\Roaming\Microsoft\SQL Server Management Studio\13.0\SqlStudio.bin");
// Backup our original file just in case...
File.Copy(settingsFile.FullName, settingsFile.FullName + ".backup");
BinaryFormatter fmt = new BinaryFormatter();
SqlStudio settings = null;
using(var fs = settingsFile.Open(FileMode.Open))
{
settings = (SqlStudio)fmt.Deserialize(fs);
}
// The structure of server types / servers / connections requires us to loop
// through multiple nested collections to find the connection to be removed.
// We start here with the server types
var serverTypes = settings.SSMS.ConnectionOptions.ServerTypes;
foreach (var serverType in serverTypes)
{
foreach (var server in serverType.Value.Servers)
{
// Will store the connection for the provided server which should be removed
ServerConnectionSettings removeConn = null;
foreach (var conn in server.Connections)
{
if (conn.UserName == "adminUserThatShouldBeRemoved")
{
removeConn = conn;
break;
}
}
if (removeConn != null)
{
server.Connections.RemoveItem(removeConn);
}
}
}
using (var fs = settingsFile.Open(FileMode.Create))
{
fmt.Serialize(fs, settings);
}
}
}
Example for Windows (no extra dependencies and error handling)
const path = require('path');
const fs = require('fs');
let dir = "C:\\temp\\dir1\\dir2\\dir3";
function createDirRecursively(dir) {
if (!fs.existsSync(dir)) {
createDirRecursively(path.join(dir, ".."));
fs.mkdirSync(dir);
}
}
createDirRecursively(dir); //creates dir1\dir2\dir3 in C:\temp
i have same error , just this code solve my problem , i want to share with you :
in Manifest.xml
:
add this code in top of your xml file :
xmlns:tools="http://schemas.android.com/tools"
Then added :
tools:replace="android:icon,android:theme,android:label,android:name"
to the application tag
You would need to manage the referential constraint across databases using a Trigger.
Basically you create an insert, update trigger to verify the existence of the Key in the Primary key table. If the key does not exist then revert the insert or update and then handle the exception.
Example:
Create Trigger dbo.MyTableTrigger ON dbo.MyTable, After Insert, Update
As
Begin
If NOT Exists(select PK from OtherDB.dbo.TableName where PK in (Select FK from inserted) BEGIN
-- Handle the Referential Error Here
END
END
Edited: Just to clarify. This is not the best approach with enforcing referential integrity. Ideally you would want both tables in the same db but if that is not possible. Then the above is a potential work around for you.
URL rewriting could be used to map a URL to .php files. The following rules can identify whether a .php request was made directly or it was re-written. It forbids the request in the first case:
RewriteEngine On
RewriteCond %{THE_REQUEST} ^.+?\ [^?]+\.php[?\ ]
RewriteRule \.php$ - [F]
RewriteRule test index.php
These rules will forbid all requests that end with .php
. However, URLs such as /
(which fires index.php), /test
(which rewrites to index.php) and /test?f=index.php
(which contains index.php in querystring) are still allowed.
THE_REQUEST
contains the full HTTP request line sent by the browser to the server (e.g., GET /index.php?foo=bar HTTP/1.1
)
For any CSS3-enabled browser you can use an adjacent sibling selector for styling your labels
input:checked + label {
color: white;
}
MDN's browser compatibility table says essentially all of the current, popular browsers (Chrome, IE, Firefox, Safari), on both desktop and mobile, are compatible.
Nothing that was written here helped me - but it did set me on the right path. What I ended up doing was the following:
Analyze the error message.
It says Library not found: -lPods-..
. So it cannot find that particular library. How to resolve it? Well, make sure that this library is in the search path. So where is this library located?
Search where the library is located.
I typed find . | grep -e 'Pods-.*\.a'
in a terminal in my ~/Library/Developer/Xcode/DerivedData
folder. I found out my libPods-...
library is located in a bunch of places, for example ~/Library/Developer/Xcode/DerivedData/[generated-name]/Build/Products/Release-iphonesimulator/libPods-[name].a
Add one of these folders to the library search path
If we add one of these folders to the library search path, then the problem will disappear. However, all the paths have a [generated-name]
folder somewhere, in my case [Project]-guyraaahpczkqmhghlwgsdsqyxxs
.
So how do we add that folder to the search path responsibly? By using a build time variable! We can get a list of which variables exist by looking at this answer. It turns out one of the variables that's defined is called ${PODS_CONFIGURATION_BUILD_DIR}
, and in that exact folder my libPods-[Product].a
is located!
Now add that folder to the library search path.
This is the easy part, and my actual answer to this question. Go to Build Settings -> Search paths -> Library search, make sure it is collapsed, and double click on <Multiple Values>.
In the dialog that pops up, click on the little '+' sign in the bottom left. Now type "${PODS_CONFIGURATION_BUILD_DIR}"
, and leave the drop-down option at "non-recursive". Type <Enter>. Now drag this entry all the way back up so that it sits directly under $(inherited)
.
You're done. Rebuild your product!
My error had now disappeared. Upvote this answer, close the tab, and forget the problem ever existed
Only 2 step , and you can use it everywhere in your application.
Step1. create a singleton to manager [avoiding multiple click]
package com.im.av.mediator;
import android.os.SystemClock;
import java.util.HashMap;
/**
* Created by ShuHeng on 16/6/1.
*/
public class ClickManager {
private HashMap<Integer,Long> laskClickTimeMap=new HashMap<Integer,Long>();
public volatile static ClickManager mInstance =null;
public static ClickManager getInstance(){
if (mInstance == null) {
synchronized(ClickManager.class) {
if (mInstance == null) {
mInstance = new ClickManager();
}
}
}
return mInstance;
}
public boolean isClickable1s(Integer key){
Long keyLong = laskClickTimeMap.get(key);
if(keyLong==null){
laskClickTimeMap.put(key,SystemClock.elapsedRealtime());
return true;
}else{
if (SystemClock.elapsedRealtime() - keyLong.longValue() < 1000){
return false;
}else{
laskClickTimeMap.put(key,new Long(SystemClock.elapsedRealtime()));
return true;
}
}
}
}
Step2. add one line to avoid multiple click.
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
int id = v.getId();
if (id == R.id.iv_back) {
if(!ClickManager.getInstance().isClickable1s(R.id.iv_back))return;
//do something
} else if (id == R.id.iv_light) {
if(!ClickManager.getInstance().isClickable1s(R.id.iv_light))return;
//do something
} else if (id == R.id.iv_camerarotate) {
if(!ClickManager.getInstance().isClickable1s(R.id.iv_camerarotate))return;
//do something
} else if (id == R.id.btn_delete_last_clip) {
if(!ClickManager.getInstance().isClickable1s(R.id.btn_delete_last_clip))return;
//do something
} else if (id == R.id.iv_ok) {
if(!ClickManager.getInstance().isClickable1s(R.id.iv_ok))return;
//do something
}
}
Yes, Mid
.
Dim sub_str
sub_str = Mid(source_str, 10, 5)
The first parameter is the source string, the second is the start index, and the third is the length.
@bobobobo: Note that VBScript strings are 1-based, not 0-based. Passing 0 as an argument to Mid
results in "invalid procedure call or argument Mid".
You can simply convert your radian result to degree by using
math.degrees and rounding appropriately to the required decimal places
for example
>>> round(math.degrees(math.asin(0.5)),2)
30.0
>>>
I searched for the error in the web and came to this page. I am using Visual Studio 2015 and this is my first MVC project.
If you miss the @ symbol before the render section you will get the same error. I would like to share this for future beginners.
@RenderSection("headscripts", required: false)
For Loopback3 all the examples given did not work for me, or as fast as using REST API anyway. But it helped me to figure out the exact answer I needed.
{"where":{"arrayAttribute":{ "all" :[String]}}}
I was not able to resolve this error by either refresh or by turning on "native polling" workspace feature. Turned out my project was also opened in two instances of eclipse. Once I closed the other instance, the error went away. So make sure your project is only opened at one place if you are seeing this error.
You are not comparing dates. You are comparing strings. In the world of string comparisons, 09/17/2015
> 01/02/2016
because 09
> 01
. You need to either put your date in a comparable string format or compare DateTime
objects which are comparable.
<?php
$date_now = date("Y-m-d"); // this format is string comparable
if ($date_now > '2016-01-02') {
echo 'greater than';
}else{
echo 'Less than';
}
Or
<?php
$date_now = new DateTime();
$date2 = new DateTime("01/02/2016");
if ($date_now > $date2) {
echo 'greater than';
}else{
echo 'Less than';
}
print
first converts the object to a string (if it is not already a string). It will also put a space before the object if it is not the start of a line and a newline character at the end.
When using stdout
, you need to convert the object to a string yourself (by calling "str", for example) and there is no newline character.
So
print 99
is equivalent to:
import sys
sys.stdout.write(str(99) + '\n')
When you write a lambda expression, the argument list to the left of ->
can be either a parenthesized argument list (possibly empty), or a single identifier without any parentheses. But in the second form, the identifier cannot be declared with a type name. Thus:
this.stops.stream().filter(Stop s-> s.getStation().getName().equals(name));
is incorrect syntax; but
this.stops.stream().filter((Stop s)-> s.getStation().getName().equals(name));
is correct. Or:
this.stops.stream().filter(s -> s.getStation().getName().equals(name));
is also correct if the compiler has enough information to figure out the types.
dict = {}
for i in set(str):
b = str.count(i, 0, len(str))
dict[i] = b
print dict
If my string is:
str = "this is string!"
Above code will print:
{'!': 1, ' ': 2, 'g': 1, 'i': 3, 'h': 1, 'n': 1, 's': 3, 'r': 1, 't': 2}
.index.tolist()
is another function which you can get the index as a list:
In [1391]: datasheet.head(20).index.tolist()
Out[1391]: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19]
It's surprising to see that nobody mentioned the native JS way to do this..
Just access the children
property of the parent element. It will return a live HTMLCollection of children elements which can be accessed by an index. If you want to get the second child:
parentElement.children[1];
In your case, something like this could work: (example)
var secondChild = document.querySelector('.parent').children[1];
console.log(secondChild); // <td>element two</td>
<table>
<tr class="parent">
<td>element one</td>
<td>element two</td>
</tr>
</table>
You can also use a combination of CSS3 selectors / querySelector()
and utilize :nth-of-type()
. This method may work better in some cases, because you can also specifiy the element type, in this case td:nth-of-type(2)
(example)
var secondChild = document.querySelector('.parent > td:nth-of-type(2)');
console.log(secondChild); // <td>element two</td>
I believe you are looking for -maxdepth 1
.
You will have to change some of your data types but the basics of what you just posted could be converted to something similar to this given the data types I used may not be accurate.
Dim DateToday As String: DateToday = Format(Date, "yyyy/MM/dd")
Dim Computers As New Collection
Dim disabledList As New Collection
Dim compArray(1 To 1) As String
'Assign data to first item in array
compArray(1) = "asdf"
'Format = Item, Key
Computers.Add "ErrorState", "Computer Name"
'Prints "ErrorState"
Debug.Print Computers("Computer Name")
Collections cannot be sorted so if you need to sort data you will probably want to use an array.
Here is a link to the outlook developer reference. http://msdn.microsoft.com/en-us/library/office/ff866465%28v=office.14%29.aspx
Another great site to help you get started is http://www.cpearson.com/Excel/Topic.aspx
Moving everything over to VBA from VB.Net is not going to be simple since not all the data types are the same and you do not have the .Net framework. If you get stuck just post the code you're stuck converting and you will surely get some help!
Edit:
Sub ArrayExample()
Dim subject As String
Dim TestArray() As String
Dim counter As Long
subject = "Example"
counter = Len(subject)
ReDim TestArray(1 To counter) As String
For counter = 1 To Len(subject)
TestArray(counter) = Right(Left(subject, counter), 1)
Next
End Sub
In essence, It means that it takes the same amount of time to look up a value in your collection whether you have a small number of items in your collection or very very many (within the constraints of your hardware)
O(n) would mean that the time it takes to look up an item is proportional to the number of items in the collection.
Typical examples of these are arrays, which can be accessed directly, regardless of their size, and linked lists, which must be traversed in order from the beginning to access a given item.
The other operation usually discussed is insert. A collection can be O(1) for access but O(n) for insert. In fact an array has exactly this behavior, because to insert an item in the middle, You would have to move each item to the right by copying it into the following slot.
For those who are using this format all the timme like me I did an extension method. I just wanted to share because I think it can be usefull to you.
/// <summary>
/// Convert a date to a human readable ISO datetime format. ie. 2012-12-12 23:01:12
/// this method must be put in a static class. This will appear as an available function
/// on every datetime objects if your static class namespace is declared.
/// </summary>
public static string ToIsoReadable(this DateTime dateTime)
{
return dateTime.ToString("yyyy-MM-dd HH':'mm':'ss");
}
For > ios 13 https://gist.github.com/andreconghau/de574bdbb468e001c404a7270017bef5#file-swipe_to_action_ios13-swift
/*
SWIPE to Action
*/
func tableView(_ tableView: UITableView,
editingStyleForRowAt indexPath: IndexPath) -> UITableViewCell.EditingStyle {
return .none
}
// Right Swipe
func tableView(_ tableView: UITableView, leadingSwipeActionsConfigurationForRowAt indexPath: IndexPath) -> UISwipeActionsConfiguration? {
let action = UIContextualAction(style: .normal,
title: "Favourite") { [weak self] (action, view, completionHandler) in
self?.handleMarkAsFavourite()
completionHandler(true)
}
action.backgroundColor = .systemBlue
return UISwipeActionsConfiguration(actions: [action])
}
func tableView(_ tableView: UITableView,
trailingSwipeActionsConfigurationForRowAt indexPath: IndexPath) -> UISwipeActionsConfiguration? {
// Archive action
let archive = UIContextualAction(style: .normal,
title: "Archive") { [weak self] (action, view, completionHandler) in
self?.handleMoveToArchive()
completionHandler(true)
}
archive.backgroundColor = .systemGreen
// Trash action
let trash = UIContextualAction(style: .destructive,
title: "Trash") { [weak self] (action, view, completionHandler) in
self?.handleMoveToTrash(book: (self?.books![indexPath.row]) as! BookItem)
completionHandler(true)
}
trash.backgroundColor = .systemRed
// Unread action
let unread = UIContextualAction(style: .normal,
title: "Mark as Unread") { [weak self] (action, view, completionHandler) in
self?.handleMarkAsUnread()
completionHandler(true)
}
unread.backgroundColor = .systemOrange
let configuration = UISwipeActionsConfiguration(actions: [trash, archive, unread])
// If you do not want an action to run with a full swipe
configuration.performsFirstActionWithFullSwipe = false
return configuration
}
private func handleMarkAsFavourite() {
print("Marked as favourite")
}
private func handleMarkAsUnread() {
print("Marked as unread")
}
private func handleMoveToTrash(book: BookItem) {
print("Moved to trash")
print(book)
let alert = UIAlertController(title: "Hi!", message: "B?n có mu?n xóa \(book.name)", preferredStyle: .alert)
let ok = UIAlertAction(title: "Xóa", style: .default, handler: { action in
book.delete()
self.listBook.reloadData()
})
alert.addAction(ok)
let cancel = UIAlertAction(title: "H?y", style: .default, handler: { action in
})
alert.addAction(cancel)
DispatchQueue.main.async(execute: {
self.present(alert, animated: true)
})
}
private func handleMoveToArchive() {
print("Moved to archive")
}
NewScores is an alias to Scores table - it looks like you can combine the queries as follows:
SELECT
ROW_NUMBER() OVER( ORDER BY NETT) AS Rank,
Name,
FlagImg,
Nett,
Rounds
FROM (
SELECT
Members.FirstName + ' ' + Members.LastName AS Name,
CASE
WHEN MenuCountry.ImgURL IS NULL THEN
'~/images/flags/ismygolf.png'
ELSE
MenuCountry.ImgURL
END AS FlagImg,
AVG(CAST(NewScores.NetScore AS DECIMAL(18, 4))) AS Nett,
COUNT(Score.ScoreID) AS Rounds
FROM
Members
INNER JOIN
Score NewScores
ON Members.MemberID = NewScores.MemberID
LEFT OUTER JOIN MenuCountry
ON Members.Country = MenuCountry.ID
WHERE
Members.Status = 1
AND NewScores.InsertedDate >= DATEADD(mm, -3, GETDATE())
GROUP BY
Members.FirstName + ' ' + Members.LastName,
MenuCountry.ImgURL
) AS Dertbl
ORDER BY;
You cannot sanely depend on client side JavaScript to determine if user credentials are correct. The browser (and all code that executes that) is under the control of the user, not you, so it is not trustworthy.
The username and password need to be entered using a form. The OK button will be a submit button. The action attribute must point to a URL which will be handled by a program that checks the credentials.
This program could be written in JavaScript, but how you go about that would depend on which server side JavaScript engine you were using. Note that SSJS is not a mainstream technology so if you really want to use it, you would have to use specialised hosting or admin your own server.
(Half a decade later and SSJS is much more common thanks to Node.js, it is still fairly specialised though).
If you want to redirect afterwards, then the program needs to emit an HTTP Location header.
Note that you need to check the credentials are OK (usually by storing a token, which isn't the actual password, in a cookie) before outputting any private page. Otherwise anyone could get to the private pages by knowing the URL (and thus bypassing the login system).
this is a generic method, you can use everywhere
const isBetween = (num1,num2,value) => value > num1 && value < num2
str.join
would be appropriate in this case
>>> print ' '.join(str(x) for x in xrange(1,11))
1 2 3 4 5 6 7 8 9 10
You get this error message if a Python file was closed from "the outside", i.e. not from the file object's close()
method:
>>> f = open(".bashrc")
>>> os.close(f.fileno())
>>> del f
close failed in file object destructor:
IOError: [Errno 9] Bad file descriptor
The line del f
deletes the last reference to the file object, causing its destructor file.__del__
to be called. The internal state of the file object indicates the file is still open since f.close()
was never called, so the destructor tries to close the file. The OS subsequently throws an error because of the attempt to close a file that's not open.
Since the implementation of os.system()
does not create any Python file objects, it does not seem likely that the system()
call is the origin of the error. Maybe you could show a bit more code?
children() is a loop in itself.
$('.element').children().animate({
'opacity':'0'
});
Is this what you wanted? - http://jsfiddle.net/jomanlk/x5vyC/3/
Floats on both sides now
#wrapper{
background:red;
overflow:auto;
}
#c1{
float:left;
background:blue;
}
#c2{
background:green;
float:right;
}?
<div id="wrapper">
<div id="c1">con1</div>
<div id="c2">con2</div>
</div>?
Drive letters can be used in the target like
scp some_file user@host:/c/temp
where c
is the drive letter. It's treated like a directory.
Maybe this works on the source, too.
#include <string>
#include <algorithm>
std::string str = "YourString";
char chars[] = {'Y', 'S'};
str.erase (std::remove(str.begin(), str.end(), chars[i]), str.end());
Will remove capital Y and S from str, leaving "ourtring".
Note that remove
is an algorithm and needs the header <algorithm>
included.
I am using the same technique in a media query which effectively turns a bullet list into an inline list on smaller devices as they save space.
So the change from:
to:
List Item 1; List Item 2; List Item 3.
To bypass "30days left must go online to sign-in", sign-in once to Microsoft account, you'll get %LocalAppData%\Microsoft\VSCommon\OnlineLicensing folder that you can copy to offline PCs.
1.Open postman app 2.Enter the URL in the URL bar in postman app along with the name of the design.Use slash(/) after URL to give the design name. 3.Select POST from the dropdown list from URL textbox. 4.Select raw from buttons available below the URL textbox. 5.Select JSON from the dropdown. 6.In the text area enter your data to be updated and enter send. 7.Select GET from dropdown list from URL textbox and enter send to see the updated result.
Try calling setWillNotDraw(false)
from surfaceCreated
:
public void surfaceCreated(SurfaceHolder holder) {
try {
setWillNotDraw(false);
mycam.setPreviewDisplay(holder);
mycam.startPreview();
} catch (Exception e) {
e.printStackTrace();
Log.d(TAG,"Surface not created");
}
}
@Override
protected void onDraw(Canvas canvas) {
canvas.drawRect(area, rectanglePaint);
Log.w(this.getClass().getName(), "On Draw Called");
}
and calling invalidate
from onTouchEvent
:
public boolean onTouch(View v, MotionEvent event) {
invalidate();
return true;
}
The following function will delete the input character one by one till the input field is empty using PromiseWhile
driver.clearKeys = function(element, value){
return element.getAttribute('value').then(function(val) {
if (val.length > 0) {
return new Promise(function(resolve, reject) {
var len;
len = val.length;
return promiseWhile(function() {
return 0 < len;
}, function() {
return new Promise(function(resolve, reject) {
len--;
return element.sendKeys(webdriver.Key.BACK_SPACE).then(function() {
return resolve(true);
});
});
}).then(function() {
return resolve(true);
});
});
}
i think doing some like this.
void printchar(char c, int n){
int i;
for(i=0;i<n;i++)
print("%c",c);
}
printchar("*",10);
Instead of removing all assertions, you should still check for things like a person being his/her own parent or other impossible situations and present an error. Maybe issue a warning if it is unlikely so the user can still detect common input errors, but it will work if everything is correct.
I would store the data in a vector with a permanent integer for each person and store the parents and children in person objects where the said int is the index of the vector. This would be pretty fast to go between generations (but slow for things like name searches). The objects would be in order of when they were created.
You don't need to use numbers to indicate positioning. By default, the position of the argument is simply the order in which it appears in the string.
Here's an example of the proper way to use this:
String result = String.format("The format method is %s!", "great");
// result now equals "The format method is great!".
You will always use a %
followed by some other characters to let the method know how it should display the string. %s
is probably the most common, and it just means that the argument should be treated as a string.
I won't list every option, but I'll give a few examples just to give you an idea:
// we can specify the # of decimals we want to show for a floating point:
String result = String.format("10 / 3 = %.2f", 10.0 / 3.0);
// result now equals "10 / 3 = 3.33"
// we can add commas to long numbers:
result = String.format("Today we processed %,d transactions.", 1000000);
// result now equals "Today we processed 1,000,000 transactions."
String.format
just uses a java.util.Formatter
, so for a full description of the options you can see the Formatter javadocs.
And, as BalusC mentions, you will see in the documentation that is possible to change the default argument ordering if you need to. However, probably the only time you'd need / want to do this is if you are using the same argument more than once.
DatePicker dp = (DatePicker) findViewById(R.id.datePicker1);
dp.setMaxDate(new Date().getTime());
If you need to check and set one argument, your build.gradle
file would be like this:
....
def coverageThreshold = 0.15
if (project.hasProperty('threshold')) {
coverageThreshold = project.property('threshold').toString().toBigDecimal()
}
//print the value of variable
println("Coverage Threshold: $coverageThreshold")
...
And the Sample command in windows:
gradlew clean test -Pthreshold=0.25
Create Sequence.
CREATE SEQUENCE user_role_id_seq
INCREMENT 1
MINVALUE 1
MAXVALUE 9223372036854775807
START 3
CACHE 1;
ALTER TABLE user_role_id_seq
OWNER TO postgres;
and alter table
ALTER TABLE user_roles ALTER COLUMN user_role_id SET DEFAULT nextval('user_role_id_seq'::regclass);
Your css with doesn't have any effect as the outer element doesn't have a width defined (and body is missing as well).
A different approach is to deliver already scaled images. http://www.sencha.com/products/io/ for example delivers the image already scaled down depending on the viewing device.
REPLACE INTO
pros:
cons:
too slow.
auto-increment key will CHANGE(increase by 1) if there is entry matches unique key
or primary key
, because it deletes the old entry then insert new one.
INSERT IGNORE
pros:
cons:
auto-increment key will not change if there is entry matches unique key
or primary key
but auto-increment index will increase by 1
some other errors/warnings will be ignored such as data conversion error.
INSERT ... ON DUPLICATE KEY UPDATE
pros:
cons:
looks relatively complex if you just want to insert not update.
auto-increment key will not change if there is entry matches unique key
or primary key
but auto-increment index will increase by 1
unique key
or primary key
?As mentioned in the comment below by @toien: "auto-increment column will be effected depends on innodb_autoinc_lock_mode
config after version 5.1" if you are using innodb
as your engine, but this also effects concurrency, so it needs to be well considered before used. So far I'm not seeing any better solution.
My suggestion is to run
openssl enc -aes-256-cbc -in plain.txt -out encrypted.bin
under debugger and see what exactly what it is doing. openssl.c is the only real tutorial/getting started/reference guide OpenSSL has. All other documentation is just an API reference.
U1: My guess is that you are not setting some other required options, like mode of operation (padding).
U2: this is probably a duplicate of this question: AES CTR 256 Encryption Mode of operation on OpenSSL and answers there will likely help.
I wrote the package sorcery to do this kind of magic robustly. You can write:
from sorcery import dict_of
columns = dict_of(n_jobs, users, queues, priorities)
and pass that to the dataframe constructor. It's equivalent to:
columns = dict(n_jobs=n_jobs, users=users, queues=queues, priorities=priorities)
As far as best practices, keep an eye for recursive functions. In my case I ran into issues with recursion (where there didn't need to be). A simplified example of what I was doing:
def my_function():
# lots of memory intensive operations
# like operating on images or huge dictionaries and lists
.....
my_flag = True
if my_flag: # restart the function if a certain flag is true
my_function()
def main():
my_function()
operating in this recursive manner won't trigger the garbage collection and clear out the remains of the function, so every time through memory usage is growing and growing.
My solution was to pull the recursive call out of my_function() and have main() handle when to call it again. this way the function ends naturally and cleans up after itself.
def my_function():
# lots of memory intensive operations
# like operating on images or huge dictionaries and lists
.....
my_flag = True
.....
return my_flag
def main():
result = my_function()
if result:
my_function()
To create and write into a csv file
The below example demonstrate creating and writing a csv file. to make a dynamic file writer we need to import a package import csv, then need to create an instance of the file with file reference Ex:- with open("D:\sample.csv","w",newline="") as file_writer
here if the file does not exist with the mentioned file directory then python will create a same file in the specified directory, and "w" represents write, if you want to read a file then replace "w" with "r" or to append to existing file then "a". newline="" specifies that it removes an extra empty row for every time you create row so to eliminate empty row we use newline="", create some field names(column names) using list like fields=["Names","Age","Class"], then apply to writer instance like writer=csv.DictWriter(file_writer,fieldnames=fields) here using Dictionary writer and assigning column names, to write column names to csv we use writer.writeheader() and to write values we use writer.writerow({"Names":"John","Age":20,"Class":"12A"}) ,while writing file values must be passed using dictionary method , here the key is column name and value is your respective key value
import csv
with open("D:\\sample.csv","w",newline="") as file_writer:
fields=["Names","Age","Class"]
writer=csv.DictWriter(file_writer,fieldnames=fields)
writer.writeheader()
writer.writerow({"Names":"John","Age":21,"Class":"12A"})
Add below line to your .gitignore
*/node_modules/*
This will ignore all node_modules in your current directory as well as subdirectory.
Late to this one, but I just discovered an alternative way of doing it:
On your template,
<a (click)="navigateAssociates()">Associates</a>
And on your component.ts, you can use serializeUrl
to convert the route into a string, which can be used with window.open()
navigateAssociates() {
const url = this.router.serializeUrl(
this.router.createUrlTree(['/page1'])
);
window.open(url, '_blank');
}
Here is the cleanest way to do this:
<p ng-show="{{foo === undefined}}">Show this if $scope.foo === undefined</p>
No need to create a helper function in the controller!
If you used debian-based OS, you can simply run
apt-get install ca-certificates
You can't run two SQL statements into one like you are doing.
You can't "execute" a select query.
db is an object and you haven't set it to anything: (e.g. set db = currentdb)
In VBA integer types can hold up to max of 32767 - I would be tempted to use Long.
You might want to be a bit more specific about the date you are inserting:
INSERT INTO Test (Start_Date) VALUES ('#" & format(InDate, "mm/dd/yyyy") & "#' );"
go 1.0 includes a http server & util for serving files with a few lines of code.
package main
import (
"fmt"; "log"; "net/http"
)
func main() {
fmt.Println("Serving files in the current directory on port 8080")
http.Handle("/", http.FileServer(http.Dir(".")))
err := http.ListenAndServe(":8080", nil)
if err != nil {
log.Fatal("ListenAndServe: ", err)
}
}
Run this source using go run myserver.go
or to build an executable go build myserver.go
I found that as of May, 2012, if you set the frame size so that the minimum pixel area (width • height) is above a certain threshold, it bumps the quality up from 360p to 480p, if you're video is at least 640 x 360.
I've discovered that setting a frame size to 780 x 480 for the embed frame triggers the 480p quality, without distorting the video (scaling up). 640 x 585 also works in this manner. I also used the &hd=1
parameter, but I doubt this has much control if your video is not uploaded in HD (720p or higher).
For instance:
<iframe width="780" height="480" src="http://www.youtube.com/embed/[VIDEO-ID]?rel=0&fs=1&showinfo=0&autohide=1&hd=1"></iframe>
Of course, the drawback is that by setting these static frame dimensions, you will most likely get black bars on the sides or above and below, depending on what you prefer.
If you didn't care about the controls being cut-off, you could go on to use CSS and overflow: hidden
to crop the black bars out of the frame, providing you know the exact dimensions of the video.
Hope this helps, and hope the Embed method soon gets discrete quality parameters again one day!
API Monitor looks very useful for this purpose.
You can increase the size of the memory through the use of commandline arguments.
See this link.
eclipse -vmargs -Xmx1024m
Edit: Also see see this excellent question
I had a situation where this helped: (PHP 5.4.16 on Windows)
curl_setopt($ch, CURLOPT_SSLVERSION, 3);
SELECT (column name) FROM (table name) WHERE (column name) < DATEADD(Day,-30,GETDATE());
Example.
SELECT `name`, `phone`, `product` FROM `tbmMember` WHERE `dateofServicw` < (Day,-30,GETDATE());
Application.Sum often does not work well in my experience (or at least the VBA developer environment does not like it for whatever reason).
The function that works best for me is Excel.WorksheetFunction.Sum()
Example:
Dim Report As Worksheet 'Set up your new worksheet variable.
Set Report = Excel.ActiveSheet 'Assign the active sheet to the variable.
Report.Cells(11, 1).Value = Excel.WorksheetFunction.Sum(Report.Range("A1:A10")) 'Add the function result.
The other method which you were looking for I think is to place the function directly into the cell. This can be done by inputting the function string into the cell value. Here is an example that provides the same result as above, except the cell value is given the function and not the result of the function:
Dim Report As Worksheet 'Set up your new worksheet variable.
Set Report = Excel.ActiveSheet 'Assign the active sheet to the variable.
Report.Cells(11, 1).Value = "=Sum(A1:A10)" 'Add the function.
There is no such feature in markdown, however you can always use HTML inside markdown:
<a href="http://example.com/" target="_blank">example</a>
Since I don't have a 50 reputation Stackoverflow wont let me comment on the second best answer. Found another trick for finding the culprit label in the Storyboard.
So once you know the id of the label, open your storyboard in a seperate tab with view controllers displayed and just do command F and command V and will take you straight to that label :)
If you need to open the DevTools press ctrl-shift-i.
If the DevTools window is already opened you can use the ctrl-shift-d shortcut; it switches the window into a detached mode.
For example in my case the electron application window (Chrome) is really small.
It's not possible to use any other suggestions except the ctrl-shift-d shortcut
Just for reference if someone is still looking on how to do this for multiple files, see the linked answer to Finding matching lines across many files.
Combining these two answers (ans1 and ans2), I think you can get the result you are needing without sorting the files:
#!/bin/bash
ans="matching_lines"
for file1 in *
do
for file2 in *
do
if [ "$file1" != "$ans" ] && [ "$file2" != "$ans" ] && [ "$file1" != "$file2" ] ; then
echo "Comparing: $file1 $file2 ..." >> $ans
perl -ne 'print if ($seen{$_} .= @ARGV) =~ /10$/' $file1 $file2 >> $ans
fi
done
done
Simply save it, give it execution rights (chmod +x compareFiles.sh
) and run it. It will take all the files present in the current working directory and will make an all-vs-all comparison leaving in the "matching_lines" file the result.
Things to be improved:
Note: Once it happened that I accidentally had a space before my database name such as mydatabase
instead of mydatabase
, phpmyadmin won't show the space, but if you run it from the command line interface of mysql, such as mysql -u the_user -p
then show databases
, you'll be able to see the space.
The previous version, xlrd 1.2.0, may appear to work, but it could also expose you to potential security vulnerabilities. With that warning out of the way, if you still want to give it a go, type the following command:
pip install xlrd==1.2.0
Add This Code on Form Close Event whether you add new record or delete, it will recreate the Primary Keys from 1 to Last record.This code will not disturb other columns of table.
Sub updatePrimaryKeysOnFormClose()
Dim i, rcount As Integer
'Declare some object variables
Dim dbLib As Database
Dim rsTable1 As Recordset
'Set dbLib to the current database (i.e. LIBRARY)
Set dbLib = CurrentDb
'Open a recordset object for the Table1 table
Set rsTable1 = dbLib.OpenRecordset("Table1")
rcount = rsTable1.RecordCount
'== Add New Record ============================
For i = 1 To rcount
With rsTable1
rsTable1.Edit
rsTable1.Fields(0) = i
rsTable1.Update
'-- Go to Next Record ---
rsTable1.MoveNext
End With
Next
Set rsTable1 = rsTable1
End Sub
You'd use them for instance to implement computed properties.
For example:
function Circle(radius) {
this.radius = radius;
}
Object.defineProperty(Circle.prototype, 'circumference', {
get: function() { return 2*Math.PI*this.radius; }
});
Object.defineProperty(Circle.prototype, 'area', {
get: function() { return Math.PI*this.radius*this.radius; }
});
c = new Circle(10);
console.log(c.area); // Should output 314.159
console.log(c.circumference); // Should output 62.832
For me, as of Google Chrome Version 46.0.2490.71 m, the Headers info area is a little hidden. To access:
While the browser is open, press F12 to access Web Developer tools
When opened, click the "Network" option
Initially, it is possible the page data is not present/up to date. Refresh the page if necessary
Observe the page information appears in the listing. (Also, make sure "All" is selected next to the "Hide data URLs" checkbox)
I have released a package called python-drawnow that provides functionality to let a figure update, typically called within a for loop, similar to Matlab's drawnow
.
An example usage:
from pylab import figure, plot, ion, linspace, arange, sin, pi
def draw_fig():
# can be arbitrarily complex; just to draw a figure
#figure() # don't call!
plot(t, x)
#show() # don't call!
N = 1e3
figure() # call here instead!
ion() # enable interactivity
t = linspace(0, 2*pi, num=N)
for i in arange(100):
x = sin(2 * pi * i**2 * t / 100.0)
drawnow(draw_fig)
This package works with any matplotlib figure and provides options to wait after each figure update or drop into the debugger.
try this
$tz = new DateTimeZone('Your Time Zone');
$date = new DateTime($today,$tz);
$interval = new DateInterval('P1D');
$date->sub($interval);
echo $date->format('d.m.y');
?>
Autoplay only works the second time through. on android 4.1+ you have to have some kind of user event to get the first play() to work. Once that has happened then autostart works.
This is so that the user is acknowledging that they are using bandwidth.
There is another question that answers this . Autostart html5 video using android 4 browser
This will do what you want. Fixed sides with 50px-width, and the content fills the remaining area.
<div style="width:100%;">
<div style="width: 50px; float: left;">Left Side</div>
<div style="width: 50px; float: right;">Right Side</div>
<div style="margin-left: 50px; margin-right: 50px;">Content Goes Here</div>
</div>
onLocationChange
may also be useful. Not sure if this is a Mozilla-only thing though, appears that it might be.
Probably late but here is a plugin that can do the job : http://multi-level-push-menu.make.rs/
Also v2 can use mobile gesture such as swipe ;)
As addition to the accepted answer:
To see the hashes you need to use the suggested command "git checkout hash", you can use git log
. Hoewever, depending on what you need, there is an easier way than copy/pasting hashes.
You can use git log --oneline
to read many commit messages in a more compressed format.
Lets say you see this a one-line list of the commits with minimal information and only partly visible hashes:
hash111 (HEAD -> master, origin/master, origin/HEAD)
hash222 last commit
hash333 I want this one
hash444 did something
....
If you want last commit
, you can use git checkout master^
. The ^
gives you the commit before the master. So hash222
.
If you want the n-th last commit, you can use git checkout master~n
. For example, using git checkout master~2
would give you the commit hash333
.
When I'm working with csv
files, I often use the pandas library. It makes things like this very easy. For example:
import pandas as pd
a = pd.read_csv("filea.csv")
b = pd.read_csv("fileb.csv")
b = b.dropna(axis=1)
merged = a.merge(b, on='title')
merged.to_csv("output.csv", index=False)
Some explanation follows. First, we read in the csv files:
>>> a = pd.read_csv("filea.csv")
>>> b = pd.read_csv("fileb.csv")
>>> a
title stage jan feb
0 darn 3.001 0.421 0.532
1 ok 2.829 1.036 0.751
2 three 1.115 1.146 2.921
>>> b
title mar apr may jun Unnamed: 5
0 darn 0.631 1.321 0.951 1.7510 NaN
1 ok 1.001 0.247 2.456 0.3216 NaN
2 three 0.285 1.283 0.924 956.0000 NaN
and we see there's an extra column of data (note that the first line of fileb.csv
-- title,mar,apr,may,jun,
-- has an extra comma at the end). We can get rid of that easily enough:
>>> b = b.dropna(axis=1)
>>> b
title mar apr may jun
0 darn 0.631 1.321 0.951 1.7510
1 ok 1.001 0.247 2.456 0.3216
2 three 0.285 1.283 0.924 956.0000
Now we can merge a
and b
on the title column:
>>> merged = a.merge(b, on='title')
>>> merged
title stage jan feb mar apr may jun
0 darn 3.001 0.421 0.532 0.631 1.321 0.951 1.7510
1 ok 2.829 1.036 0.751 1.001 0.247 2.456 0.3216
2 three 1.115 1.146 2.921 0.285 1.283 0.924 956.0000
and finally write this out:
>>> merged.to_csv("output.csv", index=False)
producing:
title,stage,jan,feb,mar,apr,may,jun
darn,3.001,0.421,0.532,0.631,1.321,0.951,1.751
ok,2.829,1.036,0.751,1.001,0.247,2.456,0.3216
three,1.115,1.146,2.921,0.285,1.283,0.924,956.0
CSS solution no JS and no background image:
Method 1 "margin auto" ( IE8+ - NOT FF!):
div{_x000D_
width:150px; _x000D_
height:100px; _x000D_
position:relative;_x000D_
overflow:hidden;_x000D_
}_x000D_
div img{_x000D_
position:absolute; _x000D_
top:0; _x000D_
bottom:0; _x000D_
margin: auto;_x000D_
width:100%;_x000D_
}
_x000D_
<p>Original:</p>_x000D_
<img src="http://i.stack.imgur.com/2OrtT.jpg" alt="image"/>_x000D_
_x000D_
<p>Wrapped:</p>_x000D_
<div>_x000D_
<img src="http://i.stack.imgur.com/2OrtT.jpg" alt="image"/>_x000D_
</div>
_x000D_
Method 2 "transform" ( IE9+ ):
div{_x000D_
width:150px; _x000D_
height:100px; _x000D_
position:relative;_x000D_
overflow:hidden;_x000D_
}_x000D_
_x000D_
div img{_x000D_
position:absolute; _x000D_
width:100%;_x000D_
top: 50%;_x000D_
-ms-transform: translateY(-50%);_x000D_
-webkit-transform: translateY(-50%);_x000D_
transform: translateY(-50%);_x000D_
}
_x000D_
<p>Original:</p>_x000D_
<img src="http://i.stack.imgur.com/2OrtT.jpg" alt="image"/>_x000D_
_x000D_
<p>Wrapped:</p>_x000D_
<div>_x000D_
<img src="http://i.stack.imgur.com/2OrtT.jpg" alt="image"/>_x000D_
</div>
_x000D_
http://jsfiddle.net/5xjr05dt/1/
Method 2 can be used to center an image in a fixed width / height container. Both can overflow - and if the image is smaller than the container it will still be centered.
http://jsfiddle.net/5xjr05dt/3/
Method 3 "double wrapper" ( IE8+ - NOT FF! ):
.outer{_x000D_
width:150px; _x000D_
height:100px; _x000D_
margin: 200px auto; /* just for example */_x000D_
border: 1px solid red; /* just for example */_x000D_
/* overflow: hidden; */ /* TURN THIS ON */_x000D_
position: relative;_x000D_
}_x000D_
.inner { _x000D_
border: 1px solid green; /* just for example */_x000D_
position: absolute;_x000D_
top: 0;_x000D_
bottom: 0;_x000D_
margin: auto;_x000D_
display: table;_x000D_
left: 50%;_x000D_
}_x000D_
.inner img {_x000D_
display: block;_x000D_
border: 1px solid blue; /* just for example */_x000D_
position: relative;_x000D_
right: 50%;_x000D_
opacity: .5; /* just for example */_x000D_
}
_x000D_
<div class="outer">_x000D_
<div class="inner">_x000D_
<img src="http://i.stack.imgur.com/2OrtT.jpg" alt="image"/>_x000D_
</div>_x000D_
</div>
_x000D_
http://jsfiddle.net/5xjr05dt/5/
Method 4 "double wrapper AND double image" ( IE8+ ):
.outer{_x000D_
width:150px; _x000D_
height:100px; _x000D_
margin: 200px auto; /* just for example */_x000D_
border: 1px solid red; /* just for example */_x000D_
/* overflow: hidden; */ /* TURN THIS ON */_x000D_
position: relative;_x000D_
}_x000D_
.inner { _x000D_
border: 1px solid green; /* just for example */_x000D_
position: absolute;_x000D_
top: 50%;_x000D_
bottom: 0;_x000D_
display: table;_x000D_
left: 50%;_x000D_
}_x000D_
.inner .real_image {_x000D_
display: block;_x000D_
border: 1px solid blue; /* just for example */_x000D_
position: absolute;_x000D_
bottom: 50%;_x000D_
right: 50%;_x000D_
opacity: .5; /* just for example */_x000D_
}_x000D_
_x000D_
.inner .placeholder_image{_x000D_
opacity: 0.1; /* should be 0 */_x000D_
}
_x000D_
<div class="outer">_x000D_
<div class="inner">_x000D_
<img class="real_image" src="http://i.stack.imgur.com/2OrtT.jpg" alt="image"/>_x000D_
<img class="placeholder_image" src="http://i.stack.imgur.com/2OrtT.jpg" alt="image"/>_x000D_
</div>_x000D_
</div>
_x000D_
http://jsfiddle.net/5xjr05dt/26/
Method 1 and 3 don't seem to work with Firefox
String.Format must start with zero index "{0}" like this:
Aboutme.Text = String.Format("{0}", reader.GetString(0));
table align="center" ... this aligns the table center of page.
Using td align="center" centers the content inside that td, useful for centered aligned text but you will have issues with some email clients centering content in sub level tables so using using td align as a top level method of centering your "container" table on the page is not the way to do it. Use table align instead.
Still use your 100% wrapper table too, purely as a wrapper for the body, as some email clients don't display body background colors but it will show it with the 100% table, so add your body color to both body and the 100% table.
I could go on and on for ages about all the quirks of html email dev. All I can say is test test and test again. Litmus.com is a great tool for testing emails.
The more you do the more you will learn about what works in what email clients.
Hope this helps.
I was searching for the option where I can define the line range and found the answer. For example I want to change host1 to host2 from line 36-57.
sed '36,57 s/host1/host2/g' myfile.txt > myfile1.txt
You can use gi option as well to ignore the character case.
sed '30,40 s/version/story/gi' myfile.txt > myfile1.txt
Aside from limiting the columns selected to reduce bandwidth and memory:
DataTable t;
t.Columns.Remove("columnName");
t.Columns.RemoveAt(columnIndex);
You need to call $compile
on the HTML string before inserting it into the DOM so that angular gets a chance to perform the binding.
In your fiddle, it would look something like this.
$("#dynamicContent").html(
$compile(
"<button ng-click='count = count + 1' ng-init='count=0'>Increment</button><span>count: {{count}} </span>"
)(scope)
);
Obviously, $compile
must be injected into your controller for this to work.
Read more in the $compile
documentation.
You can download the wheel corresponding to your configuration here ("Pillow-4.1.1-cp36-cp36m-win_amd64.whl" in your case) and install it with:
pip install some-package.whl
If you have problem to install the wheel read this answer
.myclass {
border-bottom: thin red dotted;
}
If one want to make executable hello.py
first find the path where python is in your os with : which python
it usually resides under "/usr/bin/python" folder.
at the very first line of hello.py
one should add : #!/usr/bin/python
then through linux command chmod
one should just make it executable like : chmod +x hello.py
and execute with ./hello.py
There is a way with struct namespace.
The benefit is all enum variables are under a specific namespace to avoid pollution.
The issue is that we could only use var
not const
type OrderStatusType string
var OrderStatus = struct {
APPROVED OrderStatusType
APPROVAL_PENDING OrderStatusType
REJECTED OrderStatusType
REVISION_PENDING OrderStatusType
}{
APPROVED: "approved",
APPROVAL_PENDING: "approval pending",
REJECTED: "rejected",
REVISION_PENDING: "revision pending",
}
Embedded Emmet could do the trick:
Emmet: Wrap with Abbreviation
div
(or an abbreviation .wrapper>p
)Command can be assigned to a keybinding.
This thing even supports passing arguments:
{
"key": "ctrl+shift+9",
"command": "editor.emmet.action.wrapWithAbbreviation",
"when": "editorHasSelection",
"args": {
"abbreviation": "span"
}
},
Use it like this:
span.myCssClass
span#myCssId
b
b.myCssClass
That is the textarea
's job - for multiline text input. The input
won't do it; it wasn't designed to do it.
So use a textarea
. Besides their visual differences, they are accessed via JavaScript the same way (use value
property).
You can prevent newlines being entered via the input
event and simply using a replace(/\n/g, '')
.
In my opinion the best solution.
- (void)didMoveToParentViewController:(UIViewController *)parent
{
if (![parent isEqual:self.parentViewController]) {
NSLog(@"Back pressed");
}
}
But it only works with iOS5+
Here's the LLVM header.
// -*- C++ -*-
//===--------------------------- __nullptr --------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP_NULLPTR
#define _LIBCPP_NULLPTR
#include <__config>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
#ifdef _LIBCPP_HAS_NO_NULLPTR
_LIBCPP_BEGIN_NAMESPACE_STD
struct _LIBCPP_TEMPLATE_VIS nullptr_t
{
void* __lx;
struct __nat {int __for_bool_;};
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR nullptr_t() : __lx(0) {}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR nullptr_t(int __nat::*) : __lx(0) {}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR operator int __nat::*() const {return 0;}
template <class _Tp>
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
operator _Tp* () const {return 0;}
template <class _Tp, class _Up>
_LIBCPP_INLINE_VISIBILITY
operator _Tp _Up::* () const {return 0;}
friend _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR bool operator==(nullptr_t, nullptr_t) {return true;}
friend _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR bool operator!=(nullptr_t, nullptr_t) {return false;}
};
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR nullptr_t __get_nullptr_t() {return nullptr_t(0);}
#define nullptr _VSTD::__get_nullptr_t()
_LIBCPP_END_NAMESPACE_STD
#else // _LIBCPP_HAS_NO_NULLPTR
namespace std
{
typedef decltype(nullptr) nullptr_t;
}
#endif // _LIBCPP_HAS_NO_NULLPTR
#endif // _LIBCPP_NULLPTR
(a great deal can be uncovered with a quick grep -r /usr/include/*`
)
One thing that jumps out is the operator *
overload (returning 0 is a lot friendlier than segfaulting...).
Another thing is it doesn't look compatible with storing an address at all. Which, compared to how it goes slinging void*'s and passing NULL results to normal pointers as sentinel values, would obviously reduce the "never forget, it might be a bomb" factor.
import re
result=[x for x in re.split(',| ',your_string) if x!='']
this works fine for me.
my_var = (int)my_var;
As simple as that. Basically you don't need it if the variable is int.
after that all html we want to write these lines of code
<script type="text/javascript" src="http://code.jquery.com/jquery-1.8.2.js"></script>
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jqueryui/1.8.11/jquery-ui.min.js"></script>
<link rel="stylesheet" href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.14/themes/base/jquery-ui.css" type="text/css" media="all">
<script>
$('#date').datepicker({
changeMonth: true,
changeYear: true,
showButtonPanel: true,
yearRange: "-100:+0",
dateFormat: 'dd/mm/yy'
});
</script>
For me , df1.subtract(df2) was inconsistent. Worked correctly on one dataframe but not on the other . That was because of duplicates . df1.exceptAll(df2) returns a new dataframe with the records from df1 that do not exist in df2 , including any duplicates.
selinux is cause for that problem.....
TException: Error: TSocket: Could not connect to localhost:9160 (Permission denied [13]) To resolve it, you need to change an SELinux boolean value (which will automatically persist across reboots). You may also want to restart httpd to reset the proxy worker, although this isn't strictly required.
or
(13) Permission Denied
Error 13 indicates a filesystem permissions problem. That is, Apache was denied access to a file or directory due to incorrect permissions. It does not, in general, imply a problem in the Apache configuration files.
In order to serve files, Apache must have the proper permission granted by the operating system to access those files. In particular, the User or Group specified in httpd.conf must be able to read all files that will be served and search the directory containing those files, along with all parent directories up to the root of the filesystem.
Typical permissions on a unix-like system for resources not owned by the User or Group specified in httpd.conf would be 644 -rw-r--r-- for ordinary files and 755 drwxr-x-r-x for directories or CGI scripts. You may also need to check extended permissions (such as SELinux permissions) on operating systems that support them.
An Example
Lets say that you received the Permission Denied error when accessing the file /usr/local/apache2/htdocs/foo/bar.html on a unix-like system.
First check the existing permissions on the file:
cd /usr/local/apache2/htdocs/foo ls -l bar.htm
Fix them if necessary:
chmod 644 bar.html
Then do the same for the directory and each parent directory (/usr/local/apache2/htdocs/foo, /usr/local/apache2/htdocs, /usr/local/apache2, /usr/local, /usr):
ls -la chmod +x . cd ..
On some systems, the utility namei can be used to help find permissions problems by listing the permissions along each component of the path:
namei -m /usr/local/apache2/htdocs/foo/bar.html
If all the standard permissions are correct and you still get a Permission Denied error, you should check for extended-permissions. For example you can use the command setenforce 0 to turn off SELinux and check to see if the problem goes away. If so, ls -alZ can be used to view SELinux permission and chcon to fix them.
In rare cases, this can be caused by other issues, such as a file permissions problem elsewhere in your apache2.conf file. For example, a WSGIScriptAlias directive not mapping to an actual file. The error message may not be accurate about which file was unreadable.
DO NOT set files or directories to mode 777, even "just to test", even if "it's just a test server". The purpose of a test server is to get things right in a safe environment, not to get away with doing it wrong. All it will tell you is if the problem is with files that actually exist.
UPDATE totals
SET total = total + 1
WHERE name = 'bill';
If you want to make sure the current value is indeed 203 (and not accidently increase it again) you can also add another condition:
UPDATE totals
SET total = total + 1
WHERE name = 'bill'
AND total = 203;
For adding compression to the resulting zip file, check out this link.
You need to change:
zip = zipfile.ZipFile('Python.zip', 'w')
to
zip = zipfile.ZipFile('Python.zip', 'w', zipfile.ZIP_DEFLATED)
You need to do something like this:
PrintStream out = new PrintStream(new FileOutputStream("output.txt"));
System.setOut(out);
The second statement is the key. It changes the value of the supposedly "final" System.out
attribute to be the supplied PrintStream value.
There are analogous methods (setIn
and setErr
) for changing the standard input and error streams; refer to the java.lang.System
javadocs for details.
A more general version of the above is this:
PrintStream out = new PrintStream(
new FileOutputStream("output.txt", append), autoFlush);
System.setOut(out);
If append
is true
, the stream will append to an existing file instead of truncating it. If autoflush
is true
, the output buffer will be flushed whenever a byte array is written, one of the println
methods is called, or a \n
is written.
I'd just like to add that it is usually a better idea to use a logging subsystem like Log4j, Logback or the standard Java java.util.logging subsystem. These offer fine-grained logging control via runtime configuration files, support for rolling log files, feeds to system logging, and so on.
Alternatively, if you are not "logging" then consider the following:
With typical shells, you can redirecting standard output (or standard error) to a file on the command line; e.g.
$ java MyApp > output.txt
For more information, refer to a shell tutorial or manual entry.
You could change your application to use an out
stream passed as a method parameter or via a singleton or dependency injection rather than writing to System.out
.
Changing System.out
may cause nasty surprises for other code in your JVM that is not expecting this to happen. (A properly designed Java library will avoid depending on System.out
and System.err
, but you could be unlucky.)
A much simpler way to do this is to use vCenter Converter Standalone Client and do a P2V but in this case a V2V. It is much faster than copying the entire VM files onto some storage somewhere and copy it onto your new vCenter. It takes a long time to copy or exporting it to an OVF template and then import it. You can set your vCenter Converter Standalone Client to V2V in one step and synchronize and then have it power up the VM on the new Vcenter and shut off on the old vCenter. Simple.
For me using this method I was able to move a VM from one vCenter to another vCenter in about 30 minutes as compared to copying or exporting which took over 2hrs. Your results may vary.
This process below, from another responder, would work even better if you can present that datastore to ESXi servers on the vCenter and then follow step 2. Eliminating having to copy all the VMs then follow rest of the process.
I made a simple wrapper for the Fullscreen API, called screenfull.js, to smooth out the prefix mess and fix some inconsistencies in the different implementations. Check out the demo to see how the Fullscreen API works.
Recommended reading:
The openssh project lists several Java alternatives, Trilead SSH for Java seems to fit what you're asking for.
You can't quite yet from what I read in the FAQ:
Do Go programs link with C/C++ programs?
There are two Go compiler implementations, gc (the 6g program and friends) and gccgo. Gc uses a different calling convention and linker and can therefore only be linked with C programs using the same convention. There is such a C compiler but no C++ compiler. Gccgo is a GCC front-end that can, with care, be linked with GCC-compiled C or C++ programs.
The cgo program provides the mechanism for a “foreign function interface” to allow safe calling of C libraries from Go code. SWIG extends this capability to C++ libraries.
You can try with this code
var result = (from item in List
select new
{
EmpLoc = item.empLoc,
EmpPL= item.empPL,
EmpShift= item.empShift
})
.ToList()
.Distinct();
My humble take on the subject, a generalization of Alex Martelli's answer, with start() and stop() control:
from threading import Timer
class RepeatedTimer(object):
def __init__(self, interval, function, *args, **kwargs):
self._timer = None
self.interval = interval
self.function = function
self.args = args
self.kwargs = kwargs
self.is_running = False
self.start()
def _run(self):
self.is_running = False
self.start()
self.function(*self.args, **self.kwargs)
def start(self):
if not self.is_running:
self._timer = Timer(self.interval, self._run)
self._timer.start()
self.is_running = True
def stop(self):
self._timer.cancel()
self.is_running = False
Usage:
from time import sleep
def hello(name):
print "Hello %s!" % name
print "starting..."
rt = RepeatedTimer(1, hello, "World") # it auto-starts, no need of rt.start()
try:
sleep(5) # your long-running job goes here...
finally:
rt.stop() # better in a try/finally block to make sure the program ends!
Features:
start()
and stop()
are safe to call multiple times even if the timer has already started/stoppedinterval
anytime, it will be effective after next run. Same for args
, kwargs
and even function
!You can use
$objWorksheet->getActiveSheet()->getRowDimension('1')->setRowHeight(40);
$objWorksheet->getActiveSheet()->getColumnDimension('A')->setWidth(100);
or define auto-size:
$objWorksheet->getRowDimension('1')->setRowHeight(-1);
A thread-safe alternative is this:
/**
* Returns all duplicates that are in the list as a new {@link Set} thread-safe.
* <p>
* Usually the Set will contain only the last duplicate, however the decision
* what elements are equal depends on the implementation of the {@link List}. An
* exotic implementation of {@link List} might decide two elements are "equal",
* in this case multiple duplicates might be returned.
*
* @param <X> The type of element to compare.
* @param list The list that contains the elements, never <code>null</code>.
* @return A set of all duplicates in the list. Returns only the last duplicate.
*/
public <X extends Object> Set<X> findDuplicates(List<X> list) {
Set<X> dups = new LinkedHashSet<>(list.size());
synchronized (list) {
for (X x : list) {
if (list.indexOf(x) != list.lastIndexOf(x)) {
dups.add(x);
}
}
}
return dups;
}
Use the css property overflow . For example:
.item{
width : 100px;
overflow:hidden;
}
The overflow property can have one of many values like ( hidden , scroll , visible ) .. you can als control the overflow in one direction only using overflow-x or overflow-y.
I hope this helps.
Passive event listeners are an emerging web standard, new feature shipped in Chrome 51 that provide a major potential boost to scroll performance. Chrome Release Notes.
It enables developers to opt-in to better scroll performance by eliminating the need for scrolling to block on touch and wheel event listeners.
Problem: All modern browsers have a threaded scrolling feature to permit scrolling to run smoothly even when expensive JavaScript is running, but this optimization is partially defeated by the need to wait for the results of any touchstart
and touchmove
handlers, which may prevent the scroll entirely by calling preventDefault()
on the event.
Solution: {passive: true}
By marking a touch or wheel listener as passive, the developer is promising the handler won't call preventDefault
to disable scrolling. This frees the browser up to respond to scrolling immediately without waiting for JavaScript, thus ensuring a reliably smooth scrolling experience for the user
.
document.addEventListener("touchstart", function(e) {
console.log(e.defaultPrevented); // will be false
e.preventDefault(); // does nothing since the listener is passive
console.log(e.defaultPrevented); // still false
}, Modernizr.passiveeventlisteners ? {passive: true} : false);
in build file change compile files('AF-Android-SDK.jar') to compile files('libs/AF-Android-SDK.jar') it will work
From XML.com:
Like xsl:if instructions, xsl:when elements can have more elaborate contents between their start- and end-tags—for example, literal result elements, xsl:element elements, or even xsl:if and xsl:choose elements—to add to the result tree. Their test expressions can also use all the tricks and operators that the xsl:if element's test attribute can use, such as and, or, and function calls, to build more complex boolean expressions.
df.loc[:,'col':] = df.loc[:,'col':].apply(pd.to_numeric, errors = 'coerce')
WPF:
using System.Windows.Media;
//hex to color
Color color = (Color)ColorConverter.ConvertFromString("#7AFF7A7A");
//color to hex
string hexcolor = color.ToString();
If you use mutexes to protect all your data, you really shouldn't need to worry. Mutexes have always provided sufficient ordering and visibility guarantees.
Now, if you used atomics, or lock-free algorithms, you need to think about the memory model. The memory model describes precisely when atomics provide ordering and visibility guarantees, and provides portable fences for hand-coded guarantees.
Previously, atomics would be done using compiler intrinsics, or some higher level library. Fences would have been done using CPU-specific instructions (memory barriers).
An auto-updated column is automatically updated to the current timestamp when the value of any other column in the row is changed from its current value. An auto-updated column remains unchanged if all other columns are set to their current values.
To explain it let's imagine you have only one row:
-------------------------------
| price | updated_at |
-------------------------------
| 2 | 2018-02-26 16:16:17 |
-------------------------------
Now, if you run the following update column:
update my_table
set price = 2
it will not change the value of updated_at, since price value wasn't actually changed (it was already 2).
But if you have another row with price value other than 2, then the updated_at value of that row (with price <> 3) will be updated to CURRENT_TIMESTAMP.
I've tried various solutions and none worked for me, after some more research I've found a solution that worked for me here
https://gist.github.com/LGM-AdrianHum/c8cb125bc493c1ccac99b4098c7eeb60
<Style x:Key="_ListBoxItemStyle" TargetType="ListBoxItem">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ListBoxItem">
<Border Name="_Border"
Padding="2"
SnapsToDevicePixels="true">
<ContentPresenter />
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsSelected" Value="true">
<Setter TargetName="_Border" Property="Background" Value="Yellow"/>
<Setter Property="Foreground" Value="Red"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<ListBox ItemContainerStyle="{DynamicResource _ListBoxItemStyle}"
Width="200" Height="250"
ScrollViewer.VerticalScrollBarVisibility="Auto"
ScrollViewer.HorizontalScrollBarVisibility="Auto">
<ListBoxItem>Hello</ListBoxItem>
<ListBoxItem>Hi</ListBoxItem>
</ListBox>
I posted it here, as this is the first google result for this problem so some others may find it useful.
Apache has 2 types of MPM (Multi-Processing Modules) defined:
1:Prefork 2: Worker
By default, Apacke is configured in preforked mode i.e. non-threaded pre-forking web server. That means that each Apache child process contains a single thread and handles one request at a time. Because of that, it consumes more resources.
Apache also has the worker MPM that turns Apache into a multi-process, multi-threaded web server. Worker MPM uses multiple child processes with many threads each.
This is how you should do it : ( for google find)
$([
{"name":"Lenovo Thinkpad 41A4298","website":"google222"},
{"name":"Lenovo Thinkpad 41A2222","website":"google"}
])
.filter(function (i,n){
return n.website==='google';
});
Better solution : ( Salman's)
$.grep( [{"name":"Lenovo Thinkpad 41A4298","website":"google"},{"name":"Lenovo Thinkpad 41A2222","website":"google"}], function( n, i ) {
return n.website==='google';
});
for a in someList:
list.append(splitColon.split(a))
You can rewrite the above as:
newlist = [splitColon.split(a) for a in someList]
#include<stdio.h>
int main ( ) {
printf( "hello " );
fprintf( stderr, "HELP!" );
printf( " world\n" );
return 0;
}
$ ./a.exe
HELP!hello world
$ ./a.exe 2> tmp1
hello world
$ ./a.exe 1> tmp1
HELP!$
stderr is usually unbuffered and stdout usually is. This can lead to odd looking output like this, which suggests code is executing in the wrong order. It isn't, it's just that the stdout buffer has yet to be flushed. Redirected or piped streams would of course not see this interleave as they would normally only see the output of stdout only or stderr only.
Although initially both stdout and stderr come to the console, both are separate and can be individually redirected.
In Java 8:
Map<String, List<String>> test1 = new LinkedHashMap<String, List<String>>();
test1.forEach((key,value) -> {
System.out.println(key + " -> " + value);
});
The []-operator is resolved to the access property this[sometype index]
, with implementation depending upon the Element-Collection.
An Enumerable-Interface declares a blueprint of what a Collection should look like in the first place.
Take this example to demonstrate the usefulness of clean Interface separation:
var ienu = "13;37".Split(';').Select(int.Parse);
//provides an WhereSelectArrayIterator
var inta = "13;37".Split(';').Select(int.Parse).ToArray()[0];
//>13
//inta.GetType(): System.Int32
Also look at the syntax of the []-operator:
//example
public class SomeCollection{
public SomeCollection(){}
private bool[] bools;
public bool this[int index] {
get {
if ( index < 0 || index >= bools.Length ){
//... Out of range index Exception
}
return bools[index];
}
set {
bools[index] = value;
}
}
//...
}
My personal favorite, and easier than the answers I have seen here (for multiple columns):
df.drop(df.columns[22:56], axis=1, inplace=True)
This is what I use to have VB
wait for process to complete before continuing.
I did not write this and do not take credit.
It was offered in some other open forum and works very well for me:
The following declarations are needed for the RunShell
subroutine:
Option Explicit
Private Declare Function OpenProcess Lib "kernel32" (ByVal dwDesiredAccess As Long, ByVal bInheritHandle As Long, ByVal dwProcessId As Long) As Long
Private Declare Function GetExitCodeProcess Lib "kernel32" (ByVal hProcess As Long, lpExitCode As Long) As Long
Private Declare Function CloseHandle Lib "kernel32" (ByVal hObject As Long) As Long
Private Const PROCESS_QUERY_INFORMATION = &H400
Private Const STATUS_PENDING = &H103&
'then in your subroutine where you need to shell:
RunShell (path and filename or command, as quoted text)
OPTION 1: if you want to make a common utility function then you can use this
export function getCurrentDate(separator=''){
let newDate = new Date()
let date = newDate.getDate();
let month = newDate.getMonth() + 1;
let year = newDate.getFullYear();
return `${year}${separator}${month<10?`0${month}`:`${month}`}${separator}${date}`
}
and use it by just importing it as
import {getCurrentDate} from './utils'
console.log(getCurrentDate())
OPTION 2: or define and use in a class directly
getCurrentDate(separator=''){
let newDate = new Date()
let date = newDate.getDate();
let month = newDate.getMonth() + 1;
let year = newDate.getFullYear();
return `${year}${separator}${month<10?`0${month}`:`${month}`}${separator}${date}`
}
Here is what I did and I'm happy to say that this worked for me. I too wanted a 2x2, 3x3 etc. grid of items to cover the entire screen. Gridlayouts do not adhere to the width of the screen. LinearLayouts kind of work but you cant use nested weights.
The best option for me was to use Fragments I used this tutorial to get started with what I wanted to do.
Here is some code:
Main Activity:
public class GridHolderActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main_6);
}
}
activity_main_6 XML (inflates 3 fragments)
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<fragment
android:id="@+id/frag1"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:name=".TwoHorizontalGridFragment"
tools:layout="@layout/two_horiz" />
<fragment
android:id="@+id/frag2"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:name=".TwoHorizontalGridFragment"
tools:layout="@layout/two_horiz" />
<fragment
android:id="@+id/frag3"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:name=".Grid.TwoHorizontalGridFragment"
tools:layout="@layout/two_horiz" />
Base fragment layout
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal"
android:layout_width="wrap_content"
android:layout_gravity="center"
android:layout_height="match_parent">
<ImageQueue
android:layout_width="0dp"
android:layout_height="wrap_content"
android:id="@+id/img1"
android:layout_weight="1"/>
<ImageQueue
android:layout_width="0dp"
android:layout_height="wrap_content"
android:id="@+id/img2"
android:layout_weight="1"/>
</LinearLayout>
Fragment Class (only handles initialization of a custom view) inflates 2 tiles per fragment
public class TwoHorizontalGridFragment extends Fragment {
private View rootView;
private ImageQueue imageQueue1;
private ImageQueue imageQueue2;
@Override
public View onCreateView(LayoutInflater inflater,
ViewGroup container, Bundle savedInstanceState) {
/**
* Inflate the layout for this fragment
*/
rootView = inflater.inflate(
R.layout.two_horiz, container, false);
return rootView;
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
imageQueue1 = (ImageQueue)rootView.findViewById(R.id.img1);
imageQueue2 = (ImageQueue)rootView.findViewById(R.id.img2);
imageQueue1.updateFiles();
imageQueue2.updateFiles();
}
}
Thats it!
This is a weird work around to using nested weights, essentially. It gives me a perfect 2x3 grid that fills the entire screen of both my 10 inch tablet and my HTC droid DNA. Let me know how it goes for you!
For the case XCode version is lower than iOS device's image, you can either copy the disk image from other already updated XCode(or maybe the internet) or upgrade your XCode.
The image is a folder with size about over 10MB, and place(find or put it) here under this path "/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/DeviceSup??port/".
To enter Xcode.app package, hold control key and click on Xcode.app, you will find additional option like show package content or some word similar. Choose this option and you will enter Xcode.app like entering a normal folder.
Hope it's helpful and good luck!
JSONArray objects have a function getJSONObject(int index)
, you can loop through all of the JSONObjects by writing a simple for-loop:
JSONArray array;
for(int n = 0; n < array.length(); n++)
{
JSONObject object = array.getJSONObject(n);
// do some stuff....
}
There are two ways to connect remote redis server using redis-cli
:
redis-cli -h host -p port
If your instance is password protected
redis-cli -h host -p port -a password
e.g. if my-web.cache.amazonaws.com
is the host url and 6379
is the port
Then this will be the command:
redis-cli -h my-web.cache.amazonaws.com -p 6379
if 92.101.91.8
is the host IP address and 6379
is the port:
redis-cli -h 92.101.91.8 -p 6379
command if the instance is protected with password pass123
:
redis-cli -h my-web.cache.amazonaws.com -p 6379 -a pass123
uri
option in commandredis-cli -u redis://password@host:port
command in a single uri
form with username & password
redis-cli -u redis://username:password@host:port
e.g. for the same above host - port configuration command would be
redis-cli -u redis://[email protected]:6379
command if username is also provided user123
redis-cli -u redis://user123:[email protected]:6379
This detailed answer was for those who wants to check all options. For more information check documentation: Redis command line usage
The original ASCII table is encoded on 7 bits therefore it has 128 characters.
Nowadays most readers/editors use an "extended" ASCII table (from ISO 8859-1), which is encoded on 8 bits and enjoys 256 characters (including Á, Ä, Œ, é, è and other characters useful for european languages as well as mathematical glyphs and other symbols).
While UTF-8 uses the same encoding as the basic ASCII table (meaning 0x41
is A in both codes), it does not share the same encoding for the "Latin Extended-A" block. Which sometimes causes weird characters to appear in words like à la carte or piñata.
Using Collections#addAll()
String[] words = {"ace","boom","crew","dog","eon"};
List<String> arrayList = new ArrayList<>();
Collections.addAll(arrayList, words);
export https_proxy=http://user:pswd@host:port
^^^^
Use http
for https_proxy instead of https
In some applications TCP is faster (better throughput) than UDP.
This is the case when doing lots of small writes relative to the MTU size. For example, I read an experiment in which a stream of 300 byte packets was being sent over Ethernet (1500 byte MTU) and TCP was 50% faster than UDP.
The reason is because TCP will try and buffer the data and fill a full network segment thus making more efficient use of the available bandwidth.
UDP on the other hand puts the packet on the wire immediately thus congesting the network with lots of small packets.
You probably shouldn't use UDP unless you have a very specific reason for doing so. Especially since you can give TCP the same sort of latency as UDP by disabling the Nagle algorithm (for example if you're transmitting real-time sensor data and you're not worried about congesting the network with lot's of small packets).
For Windows 10:
Right-click the taskbar Windows logo, select 'Programs and Features'.
Click 'Turn Windows Features on or off'
In the dialog box that appears, scroll down or resize the window and check the box next to 'Windows Identity Foundation 3.5'
Click OK.
This activates the required DLLs. Apparently Windows 10 keeps all of those features in the windows installation so that it can activate and deactivate them on demand.
Good question. These two operators work the same in PHP and C#.
|
is a bitwise OR. It will compare two values by their bits. E.g. 1101 | 0010 = 1111. This is extremely useful when using bit options. E.g. Read = 01 (0X01) Write = 10 (0X02) Read-Write = 11 (0X03). One useful example would be opening files. A simple example would be:
File.Open(FileAccess.Read | FileAccess.Write); //Gives read/write access to the file
||
is a logical OR. This is the way most people think of OR and compares two values based on their truth. E.g. I am going to the store or I will go to the mall. This is the one used most often in code. For example:
if(Name == "Admin" || Name == "Developer") { //allow access } //checks if name equals Admin OR Name equals Developer
PHP Resource: http://us3.php.net/language.operators.bitwise
C# Resources: http://msdn.microsoft.com/en-us/library/kxszd0kx(VS.71).aspx
http://msdn.microsoft.com/en-us/library/6373h346(VS.71).aspx
I found that The Boolean Expression Reducer is much easier to use than Logic Friday. Plus it doesn't require installation and is multi-platform (Java).
Also in Logic Friday the expression A | B
just returns 3 entries in truth table; I expected 4.
s = s.Replace("\"", "");
You need to use the \ to escape the double quote character in a string.
I write below code to remove the blank value in the array string.
string[] test={"1","","2","","3"};
test= test.Except(new List<string> { string.Empty }).ToArray();
This is the way it worked for me, because with other methods the form was sent empty:
<form name="yourform" id="yourform" method="POST" action="yourpage.html">
<input type=hidden name="data" value="yourdata">
<input type="submit" id="send" name="send" value="Send">
</form>
<script>
document.addEventListener("DOMContentLoaded", function(event) {
document.createElement('form').submit.call(document.getElementById('yourform'));
});
</script>
This should do it:
CoffeeScript (sync)
fs = require 'fs'
getDirs = (rootDir) ->
files = fs.readdirSync(rootDir)
dirs = []
for file in files
if file[0] != '.'
filePath = "#{rootDir}/#{file}"
stat = fs.statSync(filePath)
if stat.isDirectory()
dirs.push(file)
return dirs
CoffeeScript (async)
fs = require 'fs'
getDirs = (rootDir, cb) ->
fs.readdir rootDir, (err, files) ->
dirs = []
for file, index in files
if file[0] != '.'
filePath = "#{rootDir}/#{file}"
fs.stat filePath, (err, stat) ->
if stat.isDirectory()
dirs.push(file)
if files.length == (index + 1)
cb(dirs)
JavaScript (async)
var fs = require('fs');
var getDirs = function(rootDir, cb) {
fs.readdir(rootDir, function(err, files) {
var dirs = [];
for (var index = 0; index < files.length; ++index) {
var file = files[index];
if (file[0] !== '.') {
var filePath = rootDir + '/' + file;
fs.stat(filePath, function(err, stat) {
if (stat.isDirectory()) {
dirs.push(this.file);
}
if (files.length === (this.index + 1)) {
return cb(dirs);
}
}.bind({index: index, file: file}));
}
}
});
}
You need to clear the OnCheckedChangeListener
before setting setChecked()
:
@Override
public void onBindViewHolder(final ViewHolder holder, int position) {
holder.mRadioButton.setOnCheckedChangeListener(null);
holder.mRadioButton.setChecked(position == mCheckedPosition);
holder.mRadioButton.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
mCheckedPosition = position;
notifyDataSetChanged();
}
});
}
This way it won't trigger the java.lang.IllegalStateException: Cannot call this method while RecyclerView is computing a layout or scrolling
error.
In my case, this was because the partition hosting the ibdata1 file was full.
Another excellent plugin: http://documentcloud.github.com/visualsearch/
fileConn<-file("output.txt")
writeLines(c("Hello","World"), fileConn)
close(fileConn)
str.c_str()
gives you a const char *
, which is an LPCSTR
(Long Pointer to Constant STRing) -- means that it's a pointer to a 0
terminated string of characters. W
means wide string (composed of wchar_t
instead of char
).
Done
EDIT: now that you have posted code, I have made a few changes to it.
public List resultSetToArrayList(ResultSet rs) throws SQLException{
ResultSetMetaData md = rs.getMetaData();
int columns = md.getColumnCount();
ArrayList list = new ArrayList(50);
while (rs.next()){
HashMap row = new HashMap(columns);
for(int i=1; i<=columns; ++i){
row.put(md.getColumnName(i),rs.getObject(i));
}
list.add(row);
}
return list;
}
I've used most of the times the LIKE option and it works just fine. I just like to share one of my latest experiences where I used INSTR function. Regardless of the reasons that made me consider this options, what's important here is that the use is similar: instr(A, 'text 1') > 0 or instr(A, 'text 2') > 0 Another option could be: (instr(A, 'text 1') + instr(A, 'text 2')) > 0
I'd go with the LIKE '%text1%' OR LIKE '%text2%' option... if not hope this other option helps
Use the default constructor for Socket and then use the connect() method.
Right click in Project / Clean
That always works for me
The ServletContext#getRealPath()
is intented to convert a web content path (the path in the expanded WAR folder structure on the server's disk file system) to an absolute disk file system path.
The "/"
represents the web content root. I.e. it represents the web
folder as in the below project structure:
YourWebProject
|-- src
| :
|
|-- web
| |-- META-INF
| | `-- MANIFEST.MF
| |-- WEB-INF
| | `-- web.xml
| |-- index.jsp
| `-- login.jsp
:
So, passing the "/"
to getRealPath()
would return you the absolute disk file system path of the /web
folder of the expanded WAR file of the project. Something like /path/to/server/work/folder/some.war/
which you should be able to further use in File
or FileInputStream
.
Note that most starters don't seem to see/realize that you can actually pass the whole web content path to it and that they often use
String absolutePathToIndexJSP = servletContext.getRealPath("/") + "index.jsp"; // Wrong!
or even
String absolutePathToIndexJSP = servletContext.getRealPath("") + "index.jsp"; // Wronger!
instead of
String absolutePathToIndexJSP = servletContext.getRealPath("/index.jsp"); // Right!
Also note that even though you can write new files into it using FileOutputStream
, all changes (e.g. new files or edited files) will get lost whenever the WAR is redeployed; with the simple reason that all those changes are not contained in the original WAR file. So all starters who are attempting to save uploaded files in there are doing it wrong.
Moreover, getRealPath()
will always return null
or a completely unexpected path when the server isn't configured to expand the WAR file into the disk file system, but instead into e.g. memory as a virtual file system.
getRealPath()
is unportable; you'd better never use itUse getRealPath()
carefully. There are actually no sensible real world use cases for it. Based on my 20 years of Java EE experience, there has always been another way which is much better and more portable than getRealPath()
.
If all you actually need is to get an InputStream
of the web resource, better use ServletContext#getResourceAsStream()
instead, this will work regardless of the way how the WAR is expanded. So, if you for example want an InputStream
of index.jsp
, then do not do:
InputStream input = new FileInputStream(servletContext.getRealPath("/index.jsp")); // Wrong!
But instead do:
InputStream input = servletContext.getResourceAsStream("/index.jsp"); // Right!
Or if you intend to obtain a list of all available web resource paths, use ServletContext#getResourcePaths()
instead.
Set<String> resourcePaths = servletContext.getResourcePaths("/");
You can obtain an individual resource as URL
via ServletContext#getResource()
. This will return null
when the resource does not exist.
URL resource = servletContext.getResource(path);
Or if you intend to save an uploaded file, or create a temporary file, then see the below "See also" links.
In Android 8 Oreo:
I had the same problem and it might look so easy but it solved my problem. I have tried all the solutions recommended here but there was no problem just a day ago. So I thought the problem might be about the Session data. I tried to stop and run apache and mysql services but it didn't work also. Then I realized there are buttons on phpMyAdmin just below its logo on the left side. The button next to "Home"; "Empty Session Data" solved all of my problems.
A parameter is the variable which is part of the method’s signature (method declaration). An argument is an expression used when calling the method.
Consider the following code:
void Foo(int i, float f)
{
// Do things
}
void Bar()
{
int anInt = 1;
Foo(anInt, 2.0);
}
Here i
and f
are the parameters, and anInt
and 2.0
are the arguments.
If you still use OID, it would be better to remove the dependency on it, because in recent versions of Postgres it is no longer supported. This can stop (temporarily until you solve it) your migration from version 10 to 12 for example.
See also: https://dev.to/rafaelbernard/postgresql-pgupgrade-from-10-to-12-566i
In my case there is a textView in my Viewpager, on a button click in mainActivity I want to change the color of that textView and update pagerAdapter. On the button Click I saved the color in SharedPreference and update pagerAdapter, that it can update the color taken from shared prefrence. So, I update viewPager view the following way .
btn_purple.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
int color = ContextCompat.getColor(mContext, R.color.colorPrimaryDark2);
editor.putInt("sahittoFontColor", color);
editor.apply();
toNotifyDatasetChanged();
}
});
now the update method :
private void toNotifyDatasetChanged (){
if(viewPager!=null&& pagerAdapter!=null) {
viewPager.setAdapter(null);
viewPager.setAdapter(pagerAdapter);
}
}
And my pagerAdapter Was :
pagerAdapter = new Sahitto_ViewPagerAdapter (mContext, filenameParameter, 30, lineList);
viewPager.setAdapter(pagerAdapter);
And in instantiateItem was (in PagerAdapter) :
SharedPreferences settings = PreferenceManager.getDefaultSharedPreferences(mContext);
int bnfntcolor=settings.getInt("sahittoFontColor", 0);
if (bnfntcolor!=0){
textView.setTextColor(bnfntcolor);
}
Thus, when I click the button, the color changes immediately in pagerAdapter's Textview.
Happy coding.
Here are the basic instructions:-
%CATALINA_HOME%/conf/server.xml
).<Connector
.protocol="HTTP/1.1"
.connectionTimeout
value is set on the connector, it may need to be increased - e.g. from 20000 milliseconds (= 20 seconds) to 120000 milliseconds (= 2 minutes). If no connectionTimeout
property value is set on the connector, the default is 60 seconds - if this is insufficient, the property may need to be added.From matplotlib version 2.1 onwards, you may use a figure legend. Instead of ax.legend()
, which produces a legend with the handles from the axes ax
, one can create a figure legend
fig.legend(loc="upper right")
which will gather all handles from all subplots in the figure. Since it is a figure legend, it will be placed at the corner of the figure, and the loc
argument is relative to the figure.
import numpy as np
import matplotlib.pyplot as plt
x = np.linspace(0,10)
y = np.linspace(0,10)
z = np.sin(x/3)**2*98
fig = plt.figure()
ax = fig.add_subplot(111)
ax.plot(x,y, '-', label = 'Quantity 1')
ax2 = ax.twinx()
ax2.plot(x,z, '-r', label = 'Quantity 2')
fig.legend(loc="upper right")
ax.set_xlabel("x [units]")
ax.set_ylabel(r"Quantity 1")
ax2.set_ylabel(r"Quantity 2")
plt.show()
In order to place the legend back into the axes, one would supply a bbox_to_anchor
and a bbox_transform
. The latter would be the axes transform of the axes the legend should reside in. The former may be the coordinates of the edge defined by loc
given in axes coordinates.
fig.legend(loc="upper right", bbox_to_anchor=(1,1), bbox_transform=ax.transAxes)
Deleting registry keys as suggested above got my service stuck in the stopping state. The following procedure worked for me:
open task manager > select services tab > select the service > right click and select "go to process" > right click on the process and select End process
Service should be gone after that
For questions like this, it is always worth taking a look in the manual first. Date and time functions in the mySQL manual
CURDATE()
returns the DATE part of the current time. Manual on CURDATE()
NOW()
returns the date and time portions as a timestamp in various formats, depending on how it was requested. Manual on NOW().
try
if ! grep -q sysa /etc/passwd ; then
grep
returns true
if it finds the search target, and false
if it doesn't.
So NOT false
== true
.
if
evaluation in shells are designed to be very flexible, and many times doesn't require chains of commands (as you have written).
Also, looking at your code as is, your use of the $( ... )
form of cmd-substitution is to be commended, but think about what is coming out of the process. Try echo $(cat /etc/passwd | grep "sysa")
to see what I mean. You can take that further by using the -c
(count) option to grep and then do if ! [ $(grep -c "sysa" /etc/passwd) -eq 0 ] ; then
which works but is rather old school.
BUT, you could use the newest shell features (arithmetic evaluation) like
if ! (( $(grep -c "sysa" /etc/passwd) == 0 )) ; then ...`
which also gives you the benefit of using the c-lang based comparison operators, ==,<,>,>=,<=,%
and maybe a few others.
In this case, per a comment by Orwellophile, the arithmetic evaluation can be pared down even further, like
if ! (( $(grep -c "sysa" /etc/passwd) )) ; then ....
OR
if (( ! $(grep -c "sysa" /etc/passwd) )) ; then ....
Finally, there is an award called the Useless Use of Cat (UUOC)
. :-) Some people will jump up and down and cry gothca! I'll just say that grep
can take a file name on its cmd-line, so why invoke extra processes and pipe constructions when you don't have to? ;-)
I hope this helps.
This code will alert the selected radio button when the form is submitted. It used jQuery to get the selected value.
$("form").submit(function(e) {_x000D_
e.preventDefault();_x000D_
$this = $(this);_x000D_
_x000D_
var value = $this.find('input:radio[name=COLOR]:checked').val();_x000D_
alert(value);_x000D_
});
_x000D_
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>_x000D_
<form>_x000D_
<input name="COLOR" id="Rojo" type="radio" value="red">_x000D_
<input name="COLOR" id="Azul" type="radio" value="blue">_x000D_
<input name="COLOR" id="Amarillo" type="radio" value="yellow">_x000D_
<br>_x000D_
<input type="submit" value="Submit">_x000D_
</form>
_x000D_
Product > Profile will launch Instruments and then you there should be a "Trace Template" named "Zombies". However this trace template is only available if the current build destination is the simulator - it will not be available if you have the destination set to your iOS device.
Also another thing to note is that there is no actual Zombies instrument in the instrument library. The zombies trace template actually consists of the Allocations instrument with the "Enable NSZombie detection" launch configuration set.
first Remove next add
for simple
public static IEnumerable UserIntakeFoodEdit(FoodIntaked data)
{
DBContext db = new DBContext();
var q = db.User_Food_UserIntakeFood.AsQueryable();
var item = q.Where(f => f.PersonID == data.PersonID)
.Where(f => f.DateOfIntake == data.DateOfIntake)
.Where(f => f.MealTimeID == data.MealTimeIDOld)
.Where(f => f.NDB_No == data.NDB_No).FirstOrDefault();
item.Amount = (decimal)data.Amount;
item.WeightSeq = data.WeightSeq.ToString();
item.TotalAmount = (decimal)data.TotalAmount;
db.User_Food_UserIntakeFood.Remove(item);
db.SaveChanges();
item.MealTimeID = data.MealTimeID;//is key
db.User_Food_UserIntakeFood.Add(item);
db.SaveChanges();
return "Edit";
}
I think the easiest way to return a row with the maximum value is by getting its index. argmax()
can be used to return the index of the row with the largest value.
index = df.Value.argmax()
Now the index could be used to get the features for that particular row:
df.iloc[df.Value.argmax(), 0:2]
Another program that can do this is axel
.
axel -n <NUMBER_OF_CONNECTIONS> URL
For baisic HTTP Auth,
axel -n <NUMBER_OF_CONNECTIONS> "user:password@https://domain.tld/path/file.ext"
I my case I fetched an entity without await
:
var company = _unitOfWork.Session.GetAsync<Company>(id);
and then I tried to delete it:
await _unitOfWork.Session.DeleteAsync(company);
I could not decipher the error message that I'm deleting a Task<Company>
instead of Company
:
MappingException: No persister for: System.Runtime.CompilerServices.AsyncTaskMethodBuilder'1+AsyncStateMachineBox'1[[SmartGuide.Core.Domain.Users.Company, SmartGuide.Core, Version=2.0.0.0, Culture=neutral, PublicKeyToken=null],[NHibernate.Impl.SessionImpl+d__54`1[[SmartGuide.Core.Domain.Users.Company, SmartGuide.Core, Version=2.0.0.0, Culture=neutral, PublicKeyToken=null]], NHibernate, Version=5.3.0.0, Culture=neutral, PublicKeyToken=aa95f207798dfdb4]]
One nice feature of out
parameters is that they can be used to return data even when a function throws an exception. I think the closest equivalent to doing this with an async
method would be using a new object to hold the data that both the async
method and caller can refer to. Another way would be to pass a delegate as suggested in another answer.
Note that neither of these techniques will have any of the sort of enforcement from the compiler that out
has. I.e., the compiler won’t require you to set the value on the shared object or call a passed in delegate.
Here’s an example implementation using a shared object to imitate ref
and out
for use with async
methods and other various scenarios where ref
and out
aren’t available:
class Ref<T>
{
// Field rather than a property to support passing to functions
// accepting `ref T` or `out T`.
public T Value;
}
async Task OperationExampleAsync(Ref<int> successfulLoopsRef)
{
var things = new[] { 0, 1, 2, };
var i = 0;
while (true)
{
// Fourth iteration will throw an exception, but we will still have
// communicated data back to the caller via successfulLoopsRef.
things[i] += i;
successfulLoopsRef.Value++;
i++;
}
}
async Task UsageExample()
{
var successCounterRef = new Ref<int>();
// Note that it does not make sense to access successCounterRef
// until OperationExampleAsync completes (either fails or succeeds)
// because there’s no synchronization. Here, I think of passing
// the variable as “temporarily giving ownership” of the referenced
// object to OperationExampleAsync. Deciding on conventions is up to
// you and belongs in documentation ^^.
try
{
await OperationExampleAsync(successCounterRef);
}
finally
{
Console.WriteLine($"Had {successCounterRef.Value} successful loops.");
}
}
You can use the not
function rather than the :not
selector:
$(".content a").not(this).hide("slow")
The code below will check whether the stored procedure already exists or not.
If it exists it will alter, if it doesn't exist it will create a new stored procedure for you:
//syntax for Create and Alter Proc
DECLARE @Create NVARCHAR(200) = 'Create PROCEDURE sp_cp_test';
DECLARE @Alter NVARCHAR(200) ='Alter PROCEDURE sp_cp_test';
//Actual Procedure
DECLARE @Proc NVARCHAR(200)= ' AS BEGIN select ''sh'' END';
//Checking For Sp
IF EXISTS (SELECT *
FROM sysobjects
WHERE id = Object_id('[dbo].[sp_cp_test]')
AND Objectproperty(id, 'IsProcedure') = 1
AND xtype = 'p'
AND NAME = 'sp_cp_test')
BEGIN
SET @Proc=@Alter + @Proc
EXEC (@proc)
END
ELSE
BEGIN
SET @Proc=@Create + @Proc
EXEC (@proc)
END
go
I'm going to add my solution to my particular problem. I had two collections at the same level I needed to include. The final solution looked like this.
var recipe = _bartendoContext.Recipes
.Include(r => r.Ingredients)
.ThenInclude(r => r.Ingredient)
.Include(r => r.Ingredients)
.ThenInclude(r => r.MeasurementQuantity)
.FirstOrDefault(r => r.Id == recipeId);
if (recipe?.Ingredients == null) return 0m;
var abv = recipe.Ingredients.Sum(ingredient => ingredient.Ingredient.AlcoholByVolume * ingredient.MeasurementQuantity.Quantity);
return abv;
This is calculating the percent alcohol by volume of a given drink recipe. As you can see I just included the ingredients collection twice then included the ingredient and quantity onto that.
I generally prefer hyphens with lower case, but one thing not yet mentioned is that sometimes it's nice to have the file name exactly match the name of a single module or instantiable function contained within.
For example, I have a revealing module declared with var knockoutUtilityModule = function() {...}
within its own file named knockoutUtilityModule.js, although objectively I prefer knockout-utility-module.js.
Similarly, since I'm using a bundling mechanism to combine scripts, I've taken to defining instantiable functions (templated view models etc) each in their own file, C# style, for maintainability. For example, ProductDescriptorViewModel lives on its own inside ProductDescriptorViewModel.js (I use upper case for instantiable functions).
A tricky way is add an empty section for header. Because section has no cell, it will not floating at all.
There are two ways to know which rules are overriding:
Search the property in the Filter box at the top of the Styles tab. It will show all the rules containing that property, with the property highlighted in yellow.
Look in the Computed tab to find the same property type, and then expand that to see the source of the various rules that are trying to apply that property.
Multiple commands can be put in parenthesis and spread over numerous lines; so something like echo hi && echo hello
can be put like this:
( echo hi
echo hello )
Also variables can help:
set AFILEPATH="C:\SOME\LONG\PATH\TO\A\FILE"
if exist %AFILEPATH% (
start "" /b %AFILEPATH% -option C:\PATH\TO\SETTING...
) else (
...
Also I noticed with carets (^
) that the if
conditionals liked them to follow only if a space was present:
if exist ^
The first step is figuring out what the error actually is. In order to do this expand your MsBuild output to be diagnostic. This will reveal the actual command executed and hopefully the full error message as well
You are setting the extra with an array. You are then trying to get a single int.
Your code should be:
int[] arrayB = extras.getIntArray("numbers");
value = value.setScale(2, RoundingMode.CEILING)
Tray to add text with html value to textarea but it wil not works
value :
$(document).on('click', '.edit_targets_btn', function() {
$('#add_edit_targets').modal('show');
$('#add_edit_targets_form')[0].reset();
$('#targets_modal_title').text('Doel bijwerken');
$('#action').val('targets_update');
$('#targets_submit_btn').val('Opslaan');
$('#callcenter_targets_id').val($(this).attr("callcenter_targets_id"));
$('#targets_title').val($(this).attr("title"));
$("#targets_content").append($(this).attr("content"));
tinymce.init({
selector: '#targets_content',
setup: function (editor) {
editor.on('change', function () {
tinymce.triggerSave();
});
},
browser_spellcheck : true,
plugins: ['advlist autolink lists image charmap print preview anchor', 'searchreplace visualblocks code fullscreen', 'insertdatetime media table paste code help wordcount', 'autoresize'],
toolbar: 'undo redo | formatselect | ' + ' bold italic backcolor | alignleft aligncenter ' + ' alignright alignjustify | bullist numlist outdent indent |' + ' removeformat | image | help',
relative_urls : false,
remove_script_host : false,
image_list: [<?php $stmt = $db->query('SELECT * FROM images WHERE users_id = ' . $get_user_users_id); foreach ($stmt as $row) { ?>{title: '<?=$row['name']?>', value: '<?=$imgurl?>/image_uploads/<?=$row['src']?>'},<?php } ?>],
min_height: 250,
branding: false
});
});
I am not sure if this is new in Excel 2013, but if you right-click on the column and say "Special" there is actually a pre-defined option for ZIP Code and ZIP Code + 4. Magic.
@Dhiraj's answer is correct, and for convenience you can use the autoFocus prop to have an input automatically focus when mounted:
<input autoFocus name=...
Note that in jsx it's autoFocus
(capital F) unlike plain old html which is case-insensitive.