following @Scott's readable approach, a little bit of fine tuning
// convert any string to camelCase
var toCamelCase = function(str) {
return str.toLowerCase()
.replace( /['"]/g, '' )
.replace( /\W+/g, ' ' )
.replace( / (.)/g, function($1) { return $1.toUpperCase(); })
.replace( / /g, '' );
}
You should use bootstarp's variables to control your font-weight if you want a more customized value and/or you're following a scheme that needs to be repeated ; Variables are used throughout the entire project as a way to centralize and share commonly used values like colors, spacing, or font stacks;
you can find all the documentation at http://getbootstrap.com/css.
In XP, the .mru.dat file is in C:\Documents and Settings\Name\Application Data\Microsoft\Microsoft SQL Server\90\Tools\ShellSEM
However, removing it won't do anything.
To remove the list in XP, cut the sqlstudio bin file from C:\Documents and Settings\Name\Application Data\Microsoft\Microsoft SQL Server\100\Tools\Shell and paste it on your desktop.
Try SQL
If it has worked, then delete the sqlstudio bin file from desktop.
Easy :)
To answer this question it's critical whether the Java VM is in CLIENT or SERVER mode. You can specify "-client" or "-server" options. Otherwise java uses internal rules; basically win32 is always client and Linux is always server, but see the table here:
http://docs.oracle.com/javase/6/docs/technotes/guides/vm/server-class.html
Sun/Oracle jre6u18 doc says re client: the VM gets 1/2 of physical memory if machine has <= 192MB; 1/4 of memory if machine has <= 1Gb; max 256Mb. In my test on a 32bit WindowsXP system with 2Gb phys mem, Java allocated 256Mb, which agrees with the doc.
Sun/Oracle jre6u18 doc says re server: same as client, then adds confusing language: for 32bit JVM the default max is 1Gb, and for 64 bit JVM the default is 32Gb. In my test on a 64bit linux machine with 8Gb physical, Java allocates 2Gb, which is 1/4 of physical; on a 64bit linux machine with 128Gb physical Java allocates 32Gb, again 1/4 of physical.
Thanks to this SO post for guiding me:
If you are just setting defaults for certain attributes of a database backed model I'd consider using sql default column values - can you clarify what types of defaults you are using?
There are a number of approaches to handle it, this plugin looks like an interesting option.
Look at the following example code:
public class MyWorker
{
public SharedData state;
public void DoWork(SharedData someData)
{
this.state = someData;
while (true) ;
}
}
public class SharedData {
X myX;
public getX() { etc
public setX(anX) { etc
}
public class Program
{
public static void Main()
{
SharedData data = new SharedDate()
MyWorker work1 = new MyWorker(data);
MyWorker work2 = new MyWorker(data);
Thread thread = new Thread(new ThreadStart(work1.DoWork));
thread.Start();
Thread thread2 = new Thread(new ThreadStart(work2.DoWork));
thread2.Start();
}
}
In this case, the thread class MyWorker
has a variable state
. We initialise it with the same object. Now you can see that the two workers access the same SharedData object. Changes made by one worker are visible to the other.
You have quite a few remaining issues. How does worker 2 know when changes have been made by worker 1 and vice-versa? How do you prevent conflicting changes? Maybe read: this tutorial.
It also means you can use reserved words as variable names
say you want a class named class, since class is a reserved word, you can instead call your class class:
IList<Student> @class = new List<Student>();
If you say that many of your rows are identical you will end checking many times. You can send them and the database will determine if insert it or not with the ON CONFLICT clause as follows
INSERT INTO Hundred (name,name_slug,status) VALUES ("sql_string += hundred
+",'" + hundred_slug + "', " + status + ") ON CONFLICT ON CONSTRAINT
hundred_pkey DO NOTHING;" cursor.execute(sql_string);
According to the YAML spec, neither the :
nor the -
should be a problem. :
is only a key separator with a space after it, and -
is only an array indicator at the start of a line with a space after it.
But if your YAML implementation has a problem with it, you potentially have lots of options:
- url: 'http://www.example-site.com/'
- url: "http://www.example-site.com/"
- url:
http://www.example-site.com/
- url: >-
http://www.example-site.com/
- url: |-
http://www.example-site.com/
There is explicitly no form of escaping possible in "plain style", however.
I would like to offer a minor improvement on the last loop answer given in the previous post (that post is correct and should still be accepted). The implicit assumption made when labeling the last example is that plt.label(LIST)
puts label number X in LIST
with the line corresponding to the Xth time plot
was called. I have run into problems with this approach before. The recommended way to build legends and customize their labels per matplotlibs documentation ( http://matplotlib.org/users/legend_guide.html#adjusting-the-order-of-legend-item) is to have a warm feeling that the labels go along with the exact plots you think they do:
...
# Plot several different functions...
labels = []
plotHandles = []
for i in range(1, num_plots + 1):
x, = plt.plot(some x vector, some y vector) #need the ',' per ** below
plotHandles.append(x)
labels.append(some label)
plt.legend(plotHandles, labels, 'upper left',ncol=1)
To use information_schema and not collide with other sessions:
select *
from tempdb.INFORMATION_SCHEMA.COLUMNS
where table_name =
object_name(
object_id('tempdb..#test'),
(select database_id from sys.databases where name = 'tempdb'))
First, you're using the modifiers under an incorrect assumption.
Pattern.MULTILINE
or (?m)
tells Java to accept the anchors ^
and $
to match at the start and end of each line (otherwise they only match at the start/end of the entire string).
Pattern.DOTALL
or (?s)
tells Java to allow the dot to match newline characters, too.
Second, in your case, the regex fails because you're using the matches()
method which expects the regex to match the entire string - which of course doesn't work since there are some characters left after (\\W)*(\\S)*
have matched.
So if you're simply looking for a string that starts with User Comments:
, use the regex
^\s*User Comments:\s*(.*)
with the Pattern.DOTALL
option:
Pattern regex = Pattern.compile("^\\s*User Comments:\\s+(.*)", Pattern.DOTALL);
Matcher regexMatcher = regex.matcher(subjectString);
if (regexMatcher.find()) {
ResultString = regexMatcher.group(1);
}
ResultString
will then contain the text after User Comments:
you can try this out if you want to pass more than one type of arguments, first add them all to an array of type Object and pass that object to RunWorkerAsync() here is an example :
some_Method(){
List<string> excludeList = new List<string>(); // list of strings
string newPath ="some path"; // normal string
Object[] args = {newPath,excludeList };
backgroundAnalyzer.RunWorkerAsync(args);
}
Now in the doWork method of background worker
backgroundAnalyzer_DoWork(object sender, DoWorkEventArgs e)
{
backgroundAnalyzer.ReportProgress(50);
Object[] arg = e.Argument as Object[];
string path= (string)arg[0];
List<string> lst = (List<string>) arg[1];
.......
// do something......
//.....
}
showInventory(player);
is passing a type as parameter. That's illegal, you need to pass an object.
For example, something like:
player p;
showInventory(p);
I'm guessing you have something like this:
int main()
{
player player;
toDo();
}
which is awful. First, don't name the object the same as your type. Second, in order for the object to be visible inside the function, you'll need to pass it as parameter:
int main()
{
player p;
toDo(p);
}
and
std::string toDo(player& p)
{
//....
showInventory(p);
//....
}
Checkboxes are a control type designed for one purpose: to ensure valid entry of Boolean values.
In Access, there are two types:
2-state -- can be checked or unchecked, but not Null. Values are True (checked) or False (unchecked). In Access and VBA, the value of True is -1 and the value of False is 0. For portability with environments that use 1 for True, you can always test for False or Not False, since False is the value 0 for all environments I know of.
3-state -- like the 2-state, but can be Null. Clicking it cycles through True/False/Null. This is for binding to an integer field that allows Nulls. It is of no use with a Boolean field, since it can never be Null.
Minor quibble with the answers:
There is almost never a need to use the .Value property of an Access control, as it's the default property. These two are equivalent:
?Me!MyCheckBox.Value
?Me!MyCheckBox
The only gotcha here is that it's important to be careful that you don't create implicit references when testing the value of a checkbox. Instead of this:
If Me!MyCheckBox Then
...write one of these options:
If (Me!MyCheckBox) Then ' forces evaluation of the control
If Me!MyCheckBox = True Then
If (Me!MyCheckBox = True) Then
If (Me!MyCheckBox = Not False) Then
Likewise, when writing subroutines or functions that get values from a Boolean control, always declare your Boolean parameters as ByVal unless you actually want to manipulate the control. In that case, your parameter's data type should be an Access control and not a Boolean value. Anything else runs the risk of implicit references.
Last of all, if you set the value of a checkbox in code, you can actually set it to any number, not just 0 and -1, but any number other than 0 is treated as True (because it's Not False). While you might use that kind of thing in an HTML form, it's not proper UI design for an Access app, as there's no way for the user to be able to see what value is actually be stored in the control, which defeats the purpose of choosing it for editing your data.
For what it's worth, my problem was completely unrelated to the error Xcode was giving. I stumbled onto a solution by deleting the .h reference, compiling, adding the reference back and compiling again. The actual error then became evident.
On fedora/rhel/centos you need to
sudo yum install -y python3-devel
before
mkvirtualenv -p /usr/bin/python3.3 test-3.3
pip install numpy
otherwise you'll get
SystemError: Cannot compile 'Python.h'. Perhaps you need to install python-dev|python-devel.
In order to do this without FuncAnimation (eg you want to execute other parts of the code while the plot is being produced or you want to be updating several plots at the same time), calling draw
alone does not produce the plot (at least with the qt backend).
The following works for me:
import matplotlib.pyplot as plt
plt.ion()
class DynamicUpdate():
#Suppose we know the x range
min_x = 0
max_x = 10
def on_launch(self):
#Set up plot
self.figure, self.ax = plt.subplots()
self.lines, = self.ax.plot([],[], 'o')
#Autoscale on unknown axis and known lims on the other
self.ax.set_autoscaley_on(True)
self.ax.set_xlim(self.min_x, self.max_x)
#Other stuff
self.ax.grid()
...
def on_running(self, xdata, ydata):
#Update data (with the new _and_ the old points)
self.lines.set_xdata(xdata)
self.lines.set_ydata(ydata)
#Need both of these in order to rescale
self.ax.relim()
self.ax.autoscale_view()
#We need to draw *and* flush
self.figure.canvas.draw()
self.figure.canvas.flush_events()
#Example
def __call__(self):
import numpy as np
import time
self.on_launch()
xdata = []
ydata = []
for x in np.arange(0,10,0.5):
xdata.append(x)
ydata.append(np.exp(-x**2)+10*np.exp(-(x-7)**2))
self.on_running(xdata, ydata)
time.sleep(1)
return xdata, ydata
d = DynamicUpdate()
d()
Have you tried the Generate Scripts
(Right click, tasks, generate scripts) option in SQL Management Studio? Does that produce what you mean by a "SQL File"?
I hope this answer is not considered too off-topic, but I had a similar issue where I was looking for a tool to parse only parts of a nested JSON
which is not that straightforward with the accepted solutions.
If you have a similar issue, it might be worth to check out JTokken
as described in this original post or in my answer to a similar question.
This error is coming because some process is already running on 8081 port. Stop that process and then run your command, it will run your code. For this first list all the process which are using this port by typing
lsof -i :8081
This command will list the process id (PID) of the process and then kill the node process by using
kill -9 <PID>
Here PID is the process id of the node process.
I just solved this problem for myself, so I'll share what I came up with. Here's the end result:
> git summary --since=yesterday
total: 114 file changes, 13800 insertions(+) 638 deletions(-)
The underlying command looks like this:
git log --numstat --format="" "$@" | awk '{files += 1}{ins += $1}{del += $2} END{print "total: "files" files, "ins" insertions(+) "del" deletions(-)"}'
Note the $@
in the log command to pass on your arguments such as --author="Brian"
or --since=yesterday
.
Escaping the awk to put it into a git alias was messy, so instead, I put it into an executable script on my path (~/bin/git-stat-sum
), then used the script in the alias in my .gitconfig
:
[alias]
summary = !git-stat-sum \"$@\"
And it works really well. One last thing to note is that file changes
is the number of changes to files, not the number of unique files changed. That's what I was looking for, but it may not be what you expect.
Here's another example or two
git summary --author=brian
git summary master..dev
# combine them as you like
git summary --author=brian master..dev
git summary --all
Really, you should be able to replace any git log
command with git summary
.
This is certainly something that has a lot of traps. I was working with Paolo Bergantino's answer, and realising that even that has some limitations. I found working with string representations of dates a good place to quickly find some of the main problems. Start with an input string like this:
'12-2-2019 5:1:48.670'
and set up Paolo's function like this:
function count(re, str) {
if (typeof re !== "string") {
return 0;
}
re = (re === '.') ? ('\\' + re) : re;
var cre = new RegExp(re, 'g');
return ((str || '').match(cre) || []).length;
}
I wanted the regular expression to be passed in, so that the function is more reusable, secondly, I wanted the parameter to be a string, so that the client doesn't have to make the regex, but simply match on the string, like a standard string utility class method.
Now, here you can see that I'm dealing with issues with the input. With the following:
if (typeof re !== "string") {
return 0;
}
I am ensuring that the input isn't anything like the literal 0
, false
, undefined
, or null
, none of which are strings. Since these literals are not in the input string, there should be no matches, but it should match '0'
, which is a string.
With the following:
re = (re === '.') ? ('\\' + re) : re;
I am dealing with the fact that the RegExp constructor will (I think, wrongly) interpret the string '.'
as the all character matcher \.\
Finally, because I am using the RegExp constructor, I need to give it the global 'g'
flag so that it counts all matches, not just the first one, similar to the suggestions in other posts.
I realise that this is an extremely late answer, but it might be helpful to someone stumbling along here. BTW here's the TypeScript version:
function count(re: string, str: string): number {
if (typeof re !== 'string') {
return 0;
}
re = (re === '.') ? ('\\' + re) : re;
const cre = new RegExp(re, 'g');
return ((str || '').match(cre) || []).length;
}
After doing more research, and reviewing this link: https://git.wiki.kernel.org/articles/g/i/t/GitSvnComparison_cb82.html
(Some extracts below):
After reading all this, I'm convinced that Git is the way to go (although a little bit of learning curve exists). I have used Git and SVN on Windows platforms as well.
I'd love to hear what others have to say after reading the above?
I'm working with CocoaPods frameworks and in case UIApplication.shared
is unavailable then I use safeAreaInsets
in view's window
:
if #available(iOS 11.0, *) {
let insets = view.window?.safeAreaInsets
let top = insets.top
let bottom = insets.bottom
}
The log file is not visible because the slf4j configuration file location needs to passed to the java run command using the following arguments .(e.g.)
-Dlogging.config={file_location}\log4j2.xml
or this:
-Dlog4j.configurationFile={file_location}\log4j2.xml
You can use the --ignore-table option. So you could do
mysqldump -u USERNAME -pPASSWORD DATABASE --ignore-table=DATABASE.table1 > database.sql
There is no whitespace after -p
(this is not a typo).
To ignore multiple tables, use this option multiple times, this is documented to work since at least version 5.0.
If you want an alternative way to ignore multiple tables you can use a script like this:
#!/bin/bash
PASSWORD=XXXXXX
HOST=XXXXXX
USER=XXXXXX
DATABASE=databasename
DB_FILE=dump.sql
EXCLUDED_TABLES=(
table1
table2
table3
table4
tableN
)
IGNORED_TABLES_STRING=''
for TABLE in "${EXCLUDED_TABLES[@]}"
do :
IGNORED_TABLES_STRING+=" --ignore-table=${DATABASE}.${TABLE}"
done
echo "Dump structure"
mysqldump --host=${HOST} --user=${USER} --password=${PASSWORD} --single-transaction --no-data --routines ${DATABASE} > ${DB_FILE}
echo "Dump content"
mysqldump --host=${HOST} --user=${USER} --password=${PASSWORD} ${DATABASE} --no-create-info --skip-triggers ${IGNORED_TABLES_STRING} >> ${DB_FILE}
To watch out the runtime changes in value of a custom directive, use $observe
method of attrs
object, instead of putting $watch
inside a custom directive.
Here is the documentation for the same ... $observe docs
For some applications you can use Fraction
instead of floating-point numbers.
>>> from fractions import Fraction
>>> Fraction(1, 3**54)
Fraction(1, 58149737003040059690390169)
(For other applications, there's decimal
, as suggested out by the other responses.)
Since I asked the question several years ago things have progressed nicely.
Proxies are part of ES6. The following example works in Chrome, Firefox, Safari and Edge:
var handler = {
get: function(target, name) {
return target.hasOwnProperty(name) ? target[name] : 42;
}
};
var p = new Proxy({}, handler);
p.answerToTheUltimateQuestionOfLife; //=> 42
Read more in Mozilla's documentation on Proxies.
I don't know if something like that already exists. It would be easy to write your own with time, datetime and/or calendar modules, see http://docs.python.org/library/time.html
The only concern for a python solution is that your job needs to be always running and possibly be automatically "resurrected" after a reboot, something for which you do need to rely on system dependent solutions.
Reset all selection fields to the default option, where the attribute selected is defined.
$("#reset").on("click", function () {
// Reset all selections fields to default option.
$('select').each( function() {
$(this).val( $(this).find("option[selected]").val() );
});
});
You could use prop
as well. Check the following code below.
$(document).ready(function(){
$('.staff_on_site').click(function(){
var rBtnVal = $(this).val();
if(rBtnVal == "yes"){
$("#no_of_staff").prop("readonly", false);
}
else{
$("#no_of_staff").prop("readonly", true);
}
});
});
If one is severely limited in available binaries (e.g. in initramfs), my colleagues suggested:
$ ls -l /lib*/ld-linux*.so.2
On my ALT Linux systems, i586 has /lib/ld-linux.so.2
and x86_64 has /lib64/ld-linux-x86-64.so.2
.
You can get rid of the first line. You don't need import java.lang.*;
Just change your 5th line to:
public static void main(String [] args) throws Exception
I just learned (thanks to martineau's comment) that, in order to import classes from files within the same directory, you would now write in Python 3:
from .user import User
from .dir import Dir
If you are executing using gradle wrapper, you can run the command with JDK path like following
./gradlew -Dorg.gradle.java.home=/jdk_path_directory
Pure javascript:
const checkbox = document.getElementById('myCheckbox')
checkbox.addEventListener('change', (event) => {
if (event.currentTarget.checked) {
alert('checked');
} else {
alert('not checked');
}
})
_x000D_
My Checkbox: <input id="myCheckbox" type="checkbox" />
_x000D_
You don't have that kind of control with a bare a
tag. But you can hook up the tag's onclick
handler to call window.open(...)
with the right parameters. See here for examples:
https://developer.mozilla.org/En/DOM/Window.open
I still don't think you can force window over tab directly though-- that depends on the browser and the user's settings.
It helped me.
Keystore name: "debug.keystore"
Keystore password: "android"
Key alias: "androiddebugkey"
Key password: "android"
USER_NAME_PC - Your PC username
I've seen this same problem when my application depended on a referenced assembly that was not present on the deployment machine. I'm not sure what you mean by "referencing DotNetBar out of the install directory" - make sure it's set to CopyLocal=true in your project, or exists at the same full path on both your development and production machine.
Granted, the answer I linked in the comments is not very helpful. You can specify your own string converter like so.
In [25]: pd.set_option('display.float_format', lambda x: '%.3f' % x)
In [28]: Series(np.random.randn(3))*1000000000
Out[28]:
0 -757322420.605
1 -1436160588.997
2 -1235116117.064
dtype: float64
I'm not sure if that's the preferred way to do this, but it works.
Converting numbers to strings purely for aesthetic purposes seems like a bad idea, but if you have a good reason, this is one way:
In [6]: Series(np.random.randn(3)).apply(lambda x: '%.3f' % x)
Out[6]:
0 0.026
1 -0.482
2 -0.694
dtype: object
javax.servlet.Filter
.doFilter()
method, cast the incoming ServletRequest
to HttpServletRequest
.HttpServletRequest#getRequestURI()
to grab the path.java.lang.String
methods like substring()
, split()
, concat()
and so on to extract the part of interest and compose the new path.ServletRequest#getRequestDispatcher()
and then RequestDispatcher#forward()
to forward the request/response to the new URL (server-side redirect, not reflected in browser address bar), or cast the incoming ServletResponse
to HttpServletResponse
and then HttpServletResponse#sendRedirect()
to redirect the response to the new URL (client side redirect, reflected in browser address bar).web.xml
on an url-pattern
of /*
or /Check_License/*
, depending on the context path, or if you're on Servlet 3.0 already, use the @WebFilter
annotation for that instead.Don't forget to add a check in the code if the URL needs to be changed and if not, then just call FilterChain#doFilter()
, else it will call itself in an infinite loop.
Alternatively you can also just use an existing 3rd party API to do all the work for you, such as Tuckey's UrlRewriteFilter which can be configured the way as you would do with Apache's mod_rewrite
.
Since the OP asked for the name of the current script file I would prefer
import os
os.path.split(sys.argv[0])[1]
When using jQuery, the usage of $
symbol as a prefix in the variable name is merely by convention; it is completely optional and serves only to indicate that the variable holds a jQuery object, as in your example.
This means that when another jQuery function needs to be called on the object, you wouldn't need to wrap it in $()
again. For instance, compare these:
// the usual way
var item = $(this).parent().parent().find('input');
$(item).hide(); // this is a double wrap, but required for code readability
item.hide(); // this works but is very unclear how a jQuery function is getting called on this
// with $ prefix
var $item = $(this).parent().parent().find('input');
$item.hide(); // direct call is clear
$($item).hide(); // this works too, but isn't necessary
With the $
prefix the variables already holding jQuery objects are instantly recognizable and the code more readable, and eliminates double/multiple wrapping with $()
.
This worked for me on my Oracle database:
SELECT 'GRANT SELECT, insert, update, delete ON mySchema.' || TABLE_NAME || ' to myUser;'
FROM user_tables
where table_name like 'myTblPrefix%'
Then, copy the results, paste them into your editor, then run them like a script.
You could also write a script and use "Execute Immediate" to run the generated SQL if you don't want the extra copy/paste steps.
You can not read & write same file in parallel(Read-write lock). But, we can do parallel operations on temporary data(i.e. Input/output stream). Write the data to file only after closing the input stream. Below steps should be followed.
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.sql.Date;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
public class XLSXReaderWriter {
public static void main(String[] args) {
try {
File excel = new File("D://raju.xlsx");
FileInputStream fis = new FileInputStream(excel);
XSSFWorkbook book = new XSSFWorkbook(fis);
XSSFSheet sheet = book.getSheetAt(0);
Iterator<Row> itr = sheet.iterator();
// Iterating over Excel file in Java
while (itr.hasNext()) {
Row row = itr.next();
// Iterating over each column of Excel file
Iterator<Cell> cellIterator = row.cellIterator();
while (cellIterator.hasNext()) {
Cell cell = cellIterator.next();
switch (cell.getCellType()) {
case Cell.CELL_TYPE_STRING:
System.out.print(cell.getStringCellValue() + "\t");
break;
case Cell.CELL_TYPE_NUMERIC:
System.out.print(cell.getNumericCellValue() + "\t");
break;
case Cell.CELL_TYPE_BOOLEAN:
System.out.print(cell.getBooleanCellValue() + "\t");
break;
default:
}
}
System.out.println("");
}
// writing data into XLSX file
Map<String, Object[]> newData = new HashMap<String, Object[]>();
newData.put("1", new Object[] { 1d, "Raju", "75K", "dev",
"SGD" });
newData.put("2", new Object[] { 2d, "Ramesh", "58K", "test",
"USD" });
newData.put("3", new Object[] { 3d, "Ravi", "90K", "PMO",
"INR" });
Set<String> newRows = newData.keySet();
int rownum = sheet.getLastRowNum();
for (String key : newRows) {
Row row = sheet.createRow(rownum++);
Object[] objArr = newData.get(key);
int cellnum = 0;
for (Object obj : objArr) {
Cell cell = row.createCell(cellnum++);
if (obj instanceof String) {
cell.setCellValue((String) obj);
} else if (obj instanceof Boolean) {
cell.setCellValue((Boolean) obj);
} else if (obj instanceof Date) {
cell.setCellValue((Date) obj);
} else if (obj instanceof Double) {
cell.setCellValue((Double) obj);
}
}
}
// open an OutputStream to save written data into Excel file
FileOutputStream os = new FileOutputStream(excel);
book.write(os);
System.out.println("Writing on Excel file Finished ...");
// Close workbook, OutputStream and Excel file to prevent leak
os.close();
book.close();
fis.close();
} catch (FileNotFoundException fe) {
fe.printStackTrace();
} catch (IOException ie) {
ie.printStackTrace();
}
}
}
~$ echo $PATH
/home/jack/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
~$ whereis lshw
lshw: /usr/bin/lshw /usr/share/man/man1/lshw.1.gz
The (unofficial) binaries (http://www.lfd.uci.edu/~gohlke/pythonlibs/#numpy) worked for me.
I've tried Mingw, Cygwin, all failed due to varies reasons. I am on Windows 7 Enterprise, 64bit.
dat <- data.frame(x1 = c(1,2,3, NA, 5), x2 = c(100, NA, 300, 400, 500))
na.omit(dat)
x1 x2
1 1 100
3 3 300
5 5 500
The other methods are great but they don't preserve any prototype functions attached to init. To get around that you can do the following (inspired by the post from Nick Craver).
(function () {
var old_prototype = init.prototype;
var old_init = init;
init = function () {
old_init.apply(this, arguments);
// Do something extra
};
init.prototype = old_prototype;
}) ();
Easier solution:
Instead of typing mvn spring-boot:run
,
simply type mvnDebug spring-boot:run
You will still need to attach the debugger in Eclipse by making a new Debug Configuration for a "Remote Java Application" on the relevant port.
SELECT SUBSTR(TRIM(rtp.role),1,12) AS ROLE
, SUBSTR(rp.grantee,1,16) AS GRANTEE
, SUBSTR(TRIM(rtp.privilege),1,12) AS PRIVILEGE
, SUBSTR(TRIM(rtp.owner),1,12) AS OWNER
, SUBSTR(TRIM(rtp.table_name),1,28) AS TABLE_NAME
, SUBSTR(TRIM(rtp.column_name),1,20) AS COLUMN_NAME
, SUBSTR(rtp.common,1,4) AS COMMON
, SUBSTR(rtp.grantable,1,4) AS GRANTABLE
, SUBSTR(rp.default_role,1,16) AS DEFAULT_ROLE
, SUBSTR(rp.admin_option,1,4) AS ADMIN_OPTION
FROM role_tab_privs rtp
LEFT JOIN dba_role_privs rp
ON (rtp.role = rp.granted_role)
WHERE ('&1' IS NULL OR UPPER(rtp.role) LIKE UPPER('%&1%'))
AND ('&2' IS NULL OR UPPER(rp.grantee) LIKE UPPER('%&2%'))
AND ('&3' IS NULL OR UPPER(rtp.table_name) LIKE UPPER('%&3%'))
AND ('&4' IS NULL OR UPPER(rtp.owner) LIKE UPPER('%&4%'))
ORDER BY 1
, 2
, 3
, 4
;
SQLPLUS> @all_roles '' '' '' '' '' ''
SQLPLUS> @all_roles 'somerol' '' '' '' '' ''
SQLPLUS> @all_roles 'roler' 'username' '' '' '' ''
SQLPLUS> @all_roles '' '' 'part-of-database-package-name' '' '' ''
etc.
Manually add it when you build the query:
SELECT 'Site1' AS SiteName, t1.column, t1.column2
FROM t1
UNION ALL
SELECT 'Site2' AS SiteName, t2.column, t2.column2
FROM t2
UNION ALL
...
EXAMPLE:
DECLARE @t1 TABLE (column1 int, column2 nvarchar(1))
DECLARE @t2 TABLE (column1 int, column2 nvarchar(1))
INSERT INTO @t1
SELECT 1, 'a'
UNION SELECT 2, 'b'
INSERT INTO @t2
SELECT 3, 'c'
UNION SELECT 4, 'd'
SELECT 'Site1' AS SiteName, t1.column1, t1.column2
FROM @t1 t1
UNION ALL
SELECT 'Site2' AS SiteName, t2.column1, t2.column2
FROM @t2 t2
RESULT:
SiteName column1 column2
Site1 1 a
Site1 2 b
Site2 3 c
Site2 4 d
I think this will do:
$('#'+div_id+' .widget-head > span').text("new dialog title");
You can use the css-property content
and attr
to display the content of an attribute in an :after
pseudo element. You could either use the default title attribute (which is a semantic solution), or create a custom attribute, e.g. data-title
.
HTML:
<label for="male" data-title="Please, refer to Wikipedia!">Male</label>
CSS:
label[data-title]{
position: relative;
&:hover:after{
font-size: 1rem;
font-weight: normal;
display: block;
position: absolute;
left: -8em;
bottom: 2em;
content: attr(data-title);
background-color: white;
width: 20em;
text-aling: center;
}
}
To check input type
<!DOCTYPE html>
<html>
<body>
<input type=number id="txtinp">
<button onclick=checktype()>Try it</button>
<script>
function checktype()
{
alert(document.getElementById("txtinp").type);
}
</script>
</body>
</html>
i got this to work by copy pasting the signed app in the same dir as zipalign. It seems that aapt.exe could not find the source file even when given the path. i.e. this did not work zipalign -f -v 4 C:...\CordovaApp-release-unsigned.apk C:...\destination.apk it reached aapt.exeCordovaApp-release-unsigned.apk , froze and upon hitting return 'aapt.exeCordovaApp-release-unsigned.apk' is not recognized as an internal or external command, operable program or batch file. And this did zipalign -f -v 4 CordovaApp-release-unsigned.apk myappname.apk
there are 6 ways to do this in React,
number 1 and 2 and 3 are the best:
1-config CORS in the Server-Side
2-set headers manually like this:
resonse_object.header("Access-Control-Allow-Origin", "*");
resonse_object.header("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept");
3-config NGINX for proxy_pass which is explained here.
4-bypass the Cross-Origin-Policy with chrom extension(only for development and not recommended !)
5-bypass the cross-origin-policy with URL bellow(only for development)
"https://cors-anywhere.herokuapp.com/{type_your_url_here}"
6-use proxy
in your package.json
file:(only for development)
if this is your API: http://45.456.200.5:7000/api/profile/
add this part in your package.json
file:
"proxy": "http://45.456.200.5:7000/",
and then make your request with the next parts of the api:
React.useEffect(() => {
axios
.get('api/profile/')
.then(function (response) {
console.log(response);
})
.catch(function (error) {
console.log(error);
});
});
In 2013, you should use something like Silex or Slim
Silex example:
require_once __DIR__.'/../vendor/autoload.php';
$app = new Silex\Application();
$app->get('/hello/{name}', function($name) use($app) {
return 'Hello '.$app->escape($name);
});
$app->run();
Slim example:
$app = new \Slim\Slim();
$app->get('/hello/:name', function ($name) {
echo "Hello, $name";
});
$app->run();
A count(*) statement with a where condition on the primary key returned the row count much faster for me avoiding full table scan.
SELECT COUNT(*) FROM ... WHERE <PRIMARY_KEY> IS NOT NULL;
This was much faster for me than
SELECT COUNT(*) FROM ...
You need to specify both source and destination, and if you want to copy directories you should look at the -r option.
So to recursively copy /home/user/whatever from remote server to your current directory:
scp -pr user@remoteserver:whatever .
If you want to hide this warn, you just need to install fsevents as a optional dependency. Just execute:
npm i fsevents@latest -f --save-optional
..And the warn will no longer be a bother.
UPDATE 23/Dec/2015: Since this answer seems to be getting a lot of upvotes, I've updated it to fix silly bugs and to generally improve the code based upon comments and feedback. See the end of the post for a list of specific improvements.
As other people have said, Cryptography is not simple so it's best to avoid "rolling your own" encryption algorithm.
You can, however, "roll your own" wrapper class around something like the built-in RijndaelManaged
cryptography class.
Rijndael is the algorithmic name of the current Advanced Encryption Standard, so you're certainly using an algorithm that could be considered "best practice".
The RijndaelManaged
class does indeed normally require you to "muck about" with byte arrays, salts, keys, initialization vectors etc. but this is precisely the kind of detail that can be somewhat abstracted away within your "wrapper" class.
The following class is one I wrote a while ago to perform exactly the kind of thing you're after, a simple single method call to allow some string-based plaintext to be encrypted with a string-based password, with the resulting encrypted string also being represented as a string. Of course, there's an equivalent method to decrypt the encrypted string with the same password.
Unlike the first version of this code, which used the exact same salt and IV values every time, this newer version will generate random salt and IV values each time. Since salt and IV must be the same between the encryption and decryption of a given string, the salt and IV is prepended to the cipher text upon encryption and extracted from it again in order to perform the decryption. The result of this is that encrypting the exact same plaintext with the exact same password gives and entirely different ciphertext result each time.
The "strength" of using this comes from using the RijndaelManaged
class to perform the encryption for you, along with using the Rfc2898DeriveBytes function of the System.Security.Cryptography
namespace which will generate your encryption key using a standard and secure algorithm (specifically, PBKDF2) based upon the string-based password you supply. (Note this is an improvement of the first version's use of the older PBKDF1 algorithm).
Finally, it's important to note that this is still unauthenticated encryption. Encryption alone provides only privacy (i.e. message is unknown to 3rd parties), whilst authenticated encryption aims to provide both privacy and authenticity (i.e. recipient knows message was sent by the sender).
Without knowing your exact requirements, it's difficult to say whether the code here is sufficiently secure for your needs, however, it has been produced to deliver a good balance between relative simplicity of implementation vs "quality". For example, if your "receiver" of an encrypted string is receiving the string directly from a trusted "sender", then authentication may not even be necessary.
If you require something more complex, and which offers authenticated encryption, check out this post for an implementation.
Here's the code:
using System;
using System.Text;
using System.Security.Cryptography;
using System.IO;
using System.Linq;
namespace EncryptStringSample
{
public static class StringCipher
{
// This constant is used to determine the keysize of the encryption algorithm in bits.
// We divide this by 8 within the code below to get the equivalent number of bytes.
private const int Keysize = 256;
// This constant determines the number of iterations for the password bytes generation function.
private const int DerivationIterations = 1000;
public static string Encrypt(string plainText, string passPhrase)
{
// Salt and IV is randomly generated each time, but is preprended to encrypted cipher text
// so that the same Salt and IV values can be used when decrypting.
var saltStringBytes = Generate256BitsOfRandomEntropy();
var ivStringBytes = Generate256BitsOfRandomEntropy();
var plainTextBytes = Encoding.UTF8.GetBytes(plainText);
using (var password = new Rfc2898DeriveBytes(passPhrase, saltStringBytes, DerivationIterations))
{
var keyBytes = password.GetBytes(Keysize / 8);
using (var symmetricKey = new RijndaelManaged())
{
symmetricKey.BlockSize = 256;
symmetricKey.Mode = CipherMode.CBC;
symmetricKey.Padding = PaddingMode.PKCS7;
using (var encryptor = symmetricKey.CreateEncryptor(keyBytes, ivStringBytes))
{
using (var memoryStream = new MemoryStream())
{
using (var cryptoStream = new CryptoStream(memoryStream, encryptor, CryptoStreamMode.Write))
{
cryptoStream.Write(plainTextBytes, 0, plainTextBytes.Length);
cryptoStream.FlushFinalBlock();
// Create the final bytes as a concatenation of the random salt bytes, the random iv bytes and the cipher bytes.
var cipherTextBytes = saltStringBytes;
cipherTextBytes = cipherTextBytes.Concat(ivStringBytes).ToArray();
cipherTextBytes = cipherTextBytes.Concat(memoryStream.ToArray()).ToArray();
memoryStream.Close();
cryptoStream.Close();
return Convert.ToBase64String(cipherTextBytes);
}
}
}
}
}
}
public static string Decrypt(string cipherText, string passPhrase)
{
// Get the complete stream of bytes that represent:
// [32 bytes of Salt] + [32 bytes of IV] + [n bytes of CipherText]
var cipherTextBytesWithSaltAndIv = Convert.FromBase64String(cipherText);
// Get the saltbytes by extracting the first 32 bytes from the supplied cipherText bytes.
var saltStringBytes = cipherTextBytesWithSaltAndIv.Take(Keysize / 8).ToArray();
// Get the IV bytes by extracting the next 32 bytes from the supplied cipherText bytes.
var ivStringBytes = cipherTextBytesWithSaltAndIv.Skip(Keysize / 8).Take(Keysize / 8).ToArray();
// Get the actual cipher text bytes by removing the first 64 bytes from the cipherText string.
var cipherTextBytes = cipherTextBytesWithSaltAndIv.Skip((Keysize / 8) * 2).Take(cipherTextBytesWithSaltAndIv.Length - ((Keysize / 8) * 2)).ToArray();
using (var password = new Rfc2898DeriveBytes(passPhrase, saltStringBytes, DerivationIterations))
{
var keyBytes = password.GetBytes(Keysize / 8);
using (var symmetricKey = new RijndaelManaged())
{
symmetricKey.BlockSize = 256;
symmetricKey.Mode = CipherMode.CBC;
symmetricKey.Padding = PaddingMode.PKCS7;
using (var decryptor = symmetricKey.CreateDecryptor(keyBytes, ivStringBytes))
{
using (var memoryStream = new MemoryStream(cipherTextBytes))
{
using (var cryptoStream = new CryptoStream(memoryStream, decryptor, CryptoStreamMode.Read))
{
var plainTextBytes = new byte[cipherTextBytes.Length];
var decryptedByteCount = cryptoStream.Read(plainTextBytes, 0, plainTextBytes.Length);
memoryStream.Close();
cryptoStream.Close();
return Encoding.UTF8.GetString(plainTextBytes, 0, decryptedByteCount);
}
}
}
}
}
}
private static byte[] Generate256BitsOfRandomEntropy()
{
var randomBytes = new byte[32]; // 32 Bytes will give us 256 bits.
using (var rngCsp = new RNGCryptoServiceProvider())
{
// Fill the array with cryptographically secure random bytes.
rngCsp.GetBytes(randomBytes);
}
return randomBytes;
}
}
}
The above class can be used quite simply with code similar to the following:
using System;
namespace EncryptStringSample
{
class Program
{
static void Main(string[] args)
{
Console.WriteLine("Please enter a password to use:");
string password = Console.ReadLine();
Console.WriteLine("Please enter a string to encrypt:");
string plaintext = Console.ReadLine();
Console.WriteLine("");
Console.WriteLine("Your encrypted string is:");
string encryptedstring = StringCipher.Encrypt(plaintext, password);
Console.WriteLine(encryptedstring);
Console.WriteLine("");
Console.WriteLine("Your decrypted string is:");
string decryptedstring = StringCipher.Decrypt(encryptedstring, password);
Console.WriteLine(decryptedstring);
Console.WriteLine("");
Console.WriteLine("Press any key to exit...");
Console.ReadLine();
}
}
}
(You can download a simple VS2013 sample solution (which includes a few unit tests) here).
UPDATE 23/Dec/2015: The list of specific improvements to the code are:
If performance matters to you make sure you time:
import sys
import timeit
import pandas as pd
print('Python %s on %s' % (sys.version, sys.platform))
print('Pandas version %s' % pd.__version__)
repeat = 3
numbers = 100
def time(statement, _setup=None):
print (min(
timeit.Timer(statement, setup=_setup or setup).repeat(
repeat, numbers)))
print("Format %m/%d/%y")
setup = """import pandas as pd
import io
data = io.StringIO('''\
ProductCode,Date
''' + '''\
x1,07/29/15
x2,07/29/15
x3,07/29/15
x4,07/30/15
x5,07/29/15
x6,07/29/15
x7,07/29/15
y7,08/05/15
x8,08/05/15
z3,08/05/15
''' * 100)"""
time('pd.read_csv(data); data.seek(0)')
time('pd.read_csv(data, parse_dates=["Date"]); data.seek(0)')
time('pd.read_csv(data, parse_dates=["Date"],'
'infer_datetime_format=True); data.seek(0)')
time('pd.read_csv(data, parse_dates=["Date"],'
'date_parser=lambda x: pd.datetime.strptime(x, "%m/%d/%y")); data.seek(0)')
print("Format %Y-%m-%d %H:%M:%S")
setup = """import pandas as pd
import io
data = io.StringIO('''\
ProductCode,Date
''' + '''\
x1,2016-10-15 00:00:43
x2,2016-10-15 00:00:56
x3,2016-10-15 00:00:56
x4,2016-10-15 00:00:12
x5,2016-10-15 00:00:34
x6,2016-10-15 00:00:55
x7,2016-10-15 00:00:06
y7,2016-10-15 00:00:01
x8,2016-10-15 00:00:00
z3,2016-10-15 00:00:02
''' * 1000)"""
time('pd.read_csv(data); data.seek(0)')
time('pd.read_csv(data, parse_dates=["Date"]); data.seek(0)')
time('pd.read_csv(data, parse_dates=["Date"],'
'infer_datetime_format=True); data.seek(0)')
time('pd.read_csv(data, parse_dates=["Date"],'
'date_parser=lambda x: pd.datetime.strptime(x, "%Y-%m-%d %H:%M:%S")); data.seek(0)')
prints:
Python 3.7.1 (v3.7.1:260ec2c36a, Oct 20 2018, 03:13:28)
[Clang 6.0 (clang-600.0.57)] on darwin
Pandas version 0.23.4
Format %m/%d/%y
0.19123052499999993
8.20691274
8.143124389
1.2384357139999977
Format %Y-%m-%d %H:%M:%S
0.5238807110000039
0.9202787830000005
0.9832778819999959
12.002349824999996
So with iso8601-formatted date (%Y-%m-%d %H:%M:%S
is apparently an iso8601-formatted date, I guess the T can be dropped and replaced by a space) you should not specify infer_datetime_format
(which does not make a difference with more common ones either apparently) and passing your own parser in just cripples performance. On the other hand, date_parser
does make a difference with not so standard day formats. Be sure to time before you optimize, as usual.
$.delay is used to delay animations in a queue, not halt execution.
Instead of using a while loop, you need to recursively call a method that performs the check every second using setTimeout
:
var check = function(){
if(condition){
// run when condition is met
}
else {
setTimeout(check, 1000); // check again in a second
}
}
check();
you can populate the data you want with a simple callback function,
let's say we have a list named lst
that we want to populate,
we have a function that pupulates pupulates list,
const lst = [];
const populateData = (data) => {lst.push(data)}
now we can pass the callback function to the function which is making the axios call and we can pupulate the list when we get data from response.
now we make our function that makes the request and pass populateData
as a callback function.
function axiosTest (populateData) {
axios.get(url)
.then(function(response){
populateData(response.data);
})
.catch(function(error){
console.log(error);
});
}
On my AWS beanstalk server, I don't see $_SERVER['HTTPS'] variable. I do see $_SERVER['HTTP_X_FORWARDED_PROTO'] which can be either 'http' or 'https' so if you're hosting on AWS, use this:
if ($_SERVER['HTTP_HOST'] != 'localhost' and $_SERVER['HTTP_X_FORWARDED_PROTO'] != "https") {
$location = 'https://' . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];
header('HTTP/1.1 301 Moved Permanently');
header('Location: ' . $location);
exit;
}
Use this function:
function zip($source, $destination)
{
if (!extension_loaded('zip') || !file_exists($source)) {
return false;
}
$zip = new ZipArchive();
if (!$zip->open($destination, ZIPARCHIVE::CREATE)) {
return false;
}
$source = str_replace('\\', '/', realpath($source));
if (is_dir($source) === true) {
$files = new RecursiveIteratorIterator(new RecursiveDirectoryIterator($source), RecursiveIteratorIterator::SELF_FIRST);
foreach ($files as $file) {
$file = str_replace('\\', '/', $file);
// Ignore "." and ".." folders
if (in_array(substr($file, strrpos($file, '/')+1), array('.', '..'))) {
continue;
}
$file = realpath($file);
if (is_dir($file) === true) {
$zip->addEmptyDir(str_replace($source . '/', '', $file . '/'));
} elseif (is_file($file) === true) {
$zip->addFromString(str_replace($source . '/', '', $file), file_get_contents($file));
}
}
} elseif (is_file($source) === true) {
$zip->addFromString(basename($source), file_get_contents($source));
}
return $zip->close();
}
Example use:
zip('/folder/to/compress/', './compressed.zip');
One more thing needed for my setup was to add
172.17.0.1 localhost
to /etc/hosts
so that Docker would point to 172.17.0.1
as the DB hostname, and not rely on a changing outer ip to find the DB. Hope this helps someone else with this issue!
From Oracle Offical Java 8 Doc:
public static String deepToString(Object[] a)
Returns a string representation of the "deep contents" of the specified array. If the array contains other arrays as elements, the string representation contains their contents and so on. This method is designed for converting multidimensional arrays to strings.
Scala lists are immutable by default. You cannot "add" an element, but you can form a new list by appending the new element in front. Since it is a new list, you need to reassign the reference (so you can't use a val).
var dm = List[String]()
var dk = List[Map[String,AnyRef]]()
.....
dm = "text" :: dm
dk = Map(1 -> "ok") :: dk
The operator ::
creates the new list. You can also use the shorter syntax:
dm ::= "text"
dk ::= Map(1 -> "ok")
NB: In scala don't use the type Object
but Any
, AnyRef
or AnyVal
.
.so
files are dynamic libraries. The suffix stands for "shared object", because all the applications that are linked with the library use the same file, rather than making a copy in the resulting executable.
.a
files are static libraries. The suffix stands for "archive", because they're actually just an archive (made with the ar
command -- a predecessor of tar
that's now just used for making libraries) of the original .o object files.
.la
files are text files used by the GNU "libtools" package to describe the files that make up the corresponding library. You can find more information about them in this question: What are libtool's .la file for?
Static and dynamic libraries each have pros and cons.
Static pro: The user always uses the version of the library that you've tested with your application, so there shouldn't be any surprising compatibility problems.
Static con: If a problem is fixed in a library, you need to redistribute your application to take advantage of it. However, unless it's a library that users are likely to update on their own, you'd might need to do this anyway.
Dynamic pro: Your process's memory footprint is smaller, because the memory used for the library is amortized among all the processes using the library.
Dynamic pro: Libraries can be loaded on demand at run time; this is good for plugins, so you don't have to choose the plugins to be used when compiling and installing the software. New plugins can be added on the fly.
Dynamic con: The library might not exist on the system where someone is trying to install the application, or they might have a version that's not compatible with the application. To mitigate this, the application package might need to include a copy of the library, so it can install it if necessary. This is also often mitigated by package managers, which can download and install any necessary dependencies.
Dynamic con: Link-Time Optimization is generally not possible, so there could possibly be efficiency implications in high-performance applications. See the Wikipedia discussion of WPO and LTO.
Dynamic libraries are especially useful for system libraries, like libc
. These libraries often need to include code that's dependent on the specific OS and version, because kernel interfaces have changed. If you link a program with a static system library, it will only run on the version of the OS that this library version was written for. But if you use a dynamic library, it will automatically pick up the library that's installed on the system you run on.
You create a primary key on your fields and let the engine enforce the uniqueness. Doing IF EXISTS logic is incorrect anyway as is flawed with race conditions.
Found here:
/* Standard C++ includes */
#include <stdlib.h>
#include <iostream>
/*
Include directly the different
headers from cppconn/ and mysql_driver.h + mysql_util.h
(and mysql_connection.h). This will reduce your build time!
*/
#include "mysql_connection.h"
#include <cppconn/driver.h>
#include <cppconn/exception.h>
#include <cppconn/resultset.h>
#include <cppconn/statement.h>
using namespace std;
int main(void)
{
cout << endl;
cout << "Running 'SELECT 'Hello World!' »
AS _message'..." << endl;
try {
sql::Driver *driver;
sql::Connection *con;
sql::Statement *stmt;
sql::ResultSet *res;
/* Create a connection */
driver = get_driver_instance();
con = driver->connect("tcp://127.0.0.1:3306", "root", "root");
/* Connect to the MySQL test database */
con->setSchema("test");
stmt = con->createStatement();
res = stmt->executeQuery("SELECT 'Hello World!' AS _message"); // replace with your statement
while (res->next()) {
cout << "\t... MySQL replies: ";
/* Access column data by alias or column name */
cout << res->getString("_message") << endl;
cout << "\t... MySQL says it again: ";
/* Access column fata by numeric offset, 1 is the first column */
cout << res->getString(1) << endl;
}
delete res;
delete stmt;
delete con;
} catch (sql::SQLException &e) {
cout << "# ERR: SQLException in " << __FILE__;
cout << "(" << __FUNCTION__ << ") on line " »
<< __LINE__ << endl;
cout << "# ERR: " << e.what();
cout << " (MySQL error code: " << e.getErrorCode();
cout << ", SQLState: " << e.getSQLState() << " )" << endl;
}
cout << endl;
return EXIT_SUCCESS;
}
You can't disable anything with CSS, that's a functional-issue. CSS is meant for design-issues. You could give the impression of a textbox being disabled, by setting washed-out colors on it.
To actually disable the element, you should use the disabled boolean attribute:
<input type="text" name="lname" disabled />
Demo: http://jsfiddle.net/p6rja/
Or, if you like, you can set this via JavaScript:
document.forms['formName']['inputName'].disabled = true;????
Demo: http://jsfiddle.net/655Su/
Keep in mind that disabled inputs won't pass their values through when you post data back to the server. If you want to hold the data, but disallow to directly edit it, you may be interested in setting it to readonly
instead.
// Similar to <input value="Read-only" readonly>
document.forms['formName']['inputName'].readOnly = true;
Demo: http://jsfiddle.net/655Su/1/
This doesn't change the UI of the element, so you would need to do that yourself:
input[readonly] {
background: #CCC;
color: #333;
border: 1px solid #666
}
You could also target any disabled element:
input[disabled] { /* styles */ }
Assuming you want product with MIN()
imial value in sort
column, it would look something like this.
SELECT
c.id, c.title, p.id AS product_id, p.title
FROM
categories AS c
INNER JOIN (
SELECT
p.id, p.category_id, p.title
FROM
products AS p
CROSS JOIN (
SELECT p.category_id, MIN(sort) AS sort
FROM products
GROUP BY category_id
) AS sq USING (category_id)
) AS p ON c.id = p.category_id
This is very useful for custom ArrayAdapter
using. It is some kind of optimization. There setTag
used as reference to object that references on some parts of layout (that displaying in ListView
) instead of findViewById
.
static class ViewHolder {
TextView tvPost;
TextView tvDate;
ImageView thumb;
}
public View getView(int position, View convertView, ViewGroup parent) {
if (convertView == null) {
LayoutInflater inflater = myContext.getLayoutInflater();
convertView = inflater.inflate(R.layout.postitem, null);
ViewHolder vh = new ViewHolder();
vh.tvPost = (TextView)convertView.findViewById(R.id.postTitleLabel);
vh.tvDate = (TextView)convertView.findViewById(R.id.postDateLabel);
vh.thumb = (ImageView)convertView.findViewById(R.id.postThumb);
convertView.setTag(vh);
}
....................
}
You can give a function expression a name that is actually private and is only visible from inside of the function ifself:
var factorial = function myself (n) {
if (n <= 1) {
return 1;
}
return n * myself(n-1);
}
typeof myself === 'undefined'
Here myself
is visible only inside of the function itself.
You can use this private name to call the function recursively.
See 13. Function Definition
of the ECMAScript 5 spec:
The Identifier in a FunctionExpression can be referenced from inside the FunctionExpression's FunctionBody to allow the function to call itself recursively. However, unlike in a FunctionDeclaration, the Identifier in a FunctionExpression cannot be referenced from and does not affect the scope enclosing the FunctionExpression.
Please note that Internet Explorer up to version 8 doesn't behave correctly as the name is actually visible in the enclosing variable environment, and it references a duplicate of the actual function (see patrick dw's comment below).
Alternatively you could use arguments.callee
to refer to the current function:
var factorial = function (n) {
if (n <= 1) {
return 1;
}
return n * arguments.callee(n-1);
}
The 5th edition of ECMAScript forbids use of arguments.callee() in strict mode, however:
(From MDN): In normal code arguments.callee refers to the enclosing function. This use case is weak: simply name the enclosing function! Moreover, arguments.callee substantially hinders optimizations like inlining functions, because it must be made possible to provide a reference to the un-inlined function if arguments.callee is accessed. arguments.callee for strict mode functions is a non-deletable property which throws when set or retrieved.
I recommend using DateTime objects instead of strings, because you cannot easily compare strings, which is required for sorting. You also get additional advantages for working with dates.
Once you have the DateTime objects, sorting is quite easy:
usort($array, function($a, $b) {
return ($a['date'] < $b['date']) ? -1 : 1;
});
You can use the bit
column type.
You can use array_slice function, but do you will use another values? or only the first 5? because if you will use only the first 5 you can use the LIMIT on SQL.
@Resource
is often used by high-level objects, defined via JNDI. @Autowired
or @Inject
will be used by more common beans.
As far as I know, it's not a specification, nor even a convention. It's more the logical way standard code will use these annotations.
Though it's pretty late, I will add another approach to get the filename without extension using plain old JS-
path.replace(path.substr(path.lastIndexOf('.')), '')
I got this error when I ran my app on earlier versions of android. I thought SearchView was backwards compatible to Android 1.5, but it was created in 3.0. I removed its reference from the code and it worked.
The easiest way to get rid of this is to:
Ex :
<script>
function loadUrl(location)
{
this.document.location.href = location;
}</script>
<div onclick="loadUrl('company_page.jsp')">Abc</div>
This worked very well for me. Cheers
An example based on Chuck's answer:
myIntToStr :: Int -> String
myIntToStr x
| x < 3 = show x ++ " is less than three"
| otherwise = "normal"
Note that without the show
the third line will not compile.
7 years later and this code has helped me. However, my times still were not showing up correctly.
Using Matplotlib 2.0.0 and I had to add the following bit of code from Editing the date formatting of x-axis tick labels in matplotlib by Paul H.
import matplotlib.dates as mdates
myFmt = mdates.DateFormatter('%d')
ax.xaxis.set_major_formatter(myFmt)
I changed the format to (%H:%M) and the time displayed correctly.
All thanks to the community.
CSTR({number_field}, 0, '')
The second placeholder is for decimals.
The last placeholder is for thousands separator.
I did not try this, but what happens when you use :status
twice to check for NULL
?
Query query = getSession().createQuery(
"from CountryDTO c where ( c.status = :status OR ( c.status IS NULL AND :status IS NULL ) ) and c.type =:type"
)
.setParameter("status", status, Hibernate.STRING)
.setParameter("type", type, Hibernate.STRING);
Use value instanceof YourClass
Just use basename
:
echo `basename "$filename"`
The quotes are needed in case $filename contains e.g. spaces.
In my case I had
$(`#my_table`).empty();
Where it should have been
$(`#my_table tbody`).empty();
Note: in my case I had to empty the table since i had data that I wanted gone before inserting new data.
Just thought of sharing where it "might" help someone in the future!
*{
margin:0
padding:0
}
make sure your container's width:%100
None of the answers return false
for empty strings, a fix for that...
function is_numeric(n)
{
return (n != '' && !isNaN(parseFloat(n)) && isFinite(n));
}
The documentation for css() says that setting the style property to the empty string will remove that property if it does not reside in a stylesheet:
Setting the value of a style property to an empty string — e.g.
$('#mydiv').css('color', '')
— removes that property from an element if it has already been directly applied, whether in the HTML style attribute, through jQuery's.css()
method, or through direct DOM manipulation of the style property. It does not, however, remove a style that has been applied with a CSS rule in a stylesheet or<style>
element.
Since your styles are inline, you can write:
$(selector).css("-moz-user-select", "");
As @TechSpellBound suggested remove the quotes around the ? signs. Then add a space character at the end of each row in your concatenated string. Otherwise the entire query will be sent as (using only part of it as an example) : .... WHERE bookings.booking_end < date ?OR bookings.booking_start > date ?GROUP BY ....
The ?
and the OR
needs to be seperated by a space character. Do it wherever needed in the query string.
You need to add else
in your lambda function. Because you are telling what to do in case your condition(here x < 90) is met, but you are not telling what to do in case the condition is not met.
sample['PR'] = sample['PR'].apply(lambda x: 'NaN' if x < 90 else x)
Entering: /usr/bin/gcc worked for me.
In your HTML, try and put the text that you want to come up in the title part of the code:
<a href="buzz.html" title="buzz hover text">
You can also do the same for the alt text of your image.
I got the same error, but when i did as below, it resolved the issue.
Instead of writing like this:
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(1);
use the below one:
ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(1);
Try this:
dir /s /b /o:n /ad > f.txt
If you want to change R's language in terminal to English forever, this works fine for me in macOS:
Open terminal.app, and say:
touch .bash_profile
Then say:
open -a TextEdit.app .bash_profile
These two commands will help you open ".bash_profile" file in TextEdit.
Add this to ".bash_profile" file:
export LANG=en_US.UTF-8
Then save the file, reopen terminal and type R
, you will find it's language has changed to english.
If you want language come back to it's original, just simply add a #
before export LANG=en_US.UTF-8
.
FragmentActivity
is part of the support library, while Activity
is the framework's default class. They are functionally equivalent.
You should always use FragmentActivity
and android.support.v4.app.Fragment
instead of the platform default Activity
and android.app.Fragment
classes. Using the platform defaults mean that you are relying on whatever implementation of fragments is used in the device you are running on. These are often multiple years old, and contain bugs that have since been fixed in the support library.
Try below one:
svn copy http://svn.example.com/repos/calc/trunk@rev-no
http://svn.example.com/repos/calc/branches/my-calc-branch
-m "Creating a private branch of /calc/trunk." --parents
No slash "\" between the svn URLs.
Probably one of the indexes is wrong, either the inner one or the outer one.
I suspect you mean to say [0]
where you say [1]
and [1]
where you say [2]
. Indexes are 0-based in Python.
I hunted around for ages to find a decent easy solution to this and in the end found some ridiculously complicated CLR solutions so decided to write my own simple VB one. Simply create a new VB CLR project from the Database tab under Installed Templates, and then add a new SQL CLR VB User Defined Function. I renamed it to CLRGetFilesInDir.vb. Here's the code inside it...
Imports System
Imports System.Data
Imports System.Data.Sql
Imports System.Data.SqlTypes
Imports Microsoft.SqlServer.Server
Imports System.IO
-----------------------------------------------------------------------------
Public Class CLRFilesInDir
-----------------------------------------------------------------------------
<SqlFunction(FillRowMethodName:="FillRowFiles", IsDeterministic:=True, IsPrecise:=True, TableDefinition:="FilePath nvarchar(4000)")> _
Public Shared Function GetFiles(PathName As SqlString, Pattern As SqlString) As IEnumerable
Dim FileNames As String()
Try
FileNames = Directory.GetFiles(PathName, Pattern, SearchOption.TopDirectoryOnly)
Catch
FileNames = Nothing
End Try
Return FileNames
End Function
-----------------------------------------------------------------------------
Public Shared Sub FillRowFiles(ByVal obj As Object, ByRef Val As SqlString)
Val = CType(obj, String).ToString
End Sub
End Class
I also changed the Assembly Name in the Project Properties window to CLRExcelFiles, and the Default Namespace to CLRGetExcelFiles.
NOTE: Set the target framework to 3.5 if you are using anything less that SQL Server 2012.
Compile the project and then copy the CLRExcelFiles.dll from \bin\release to somewhere like C:\temp on the SQL Server machine, not your own.
In SSMS:-
CREATE ASSEMBLY <your assembly name in here - anything you like>
FROM 'C:\temp\CLRExcelFiles.dll';
CREATE FUNCTION dbo.fnGetFiles
(
@PathName NVARCHAR(MAX),
@Pattern NVARCHAR(MAX)
)
RETURNS TABLE (Val NVARCHAR(100))
AS
EXTERNAL NAME <your assembly name>."CLRGetExcelFiles.CLRFilesInDir".GetFiles;
GO
then call it
SELECT * FROM dbo.fnGetFiles('\\<SERVERNAME>\<$SHARE>\<folder>\' , '*.xls')
NOTE: Even though I changed the Permission Level to EXTERNAL_ACCESS on the SQLCLR tab under Project Properties, I still needed to run this every time I (re)created it.
ALTER ASSEMBLY [CLRFilesInDirAssembly]
WITH PERMISSION_SET = EXTERNAL_ACCESS
GO
and wullah! that should work.
First you need to input the two numbers say num_rows and num_columns perhaps using argc and argv then do a for loop to print the dots.
int j=0;
int k=0;
for (k=0;k<num_columns;k++){
for (j=0;j<num_rows;j++){
printf(".");
}
printf("\n");
}
you'd have to replace the dot with something else later.
If in addition you want to pipe the output to a separate file, you can do:
On a Sun JVM:
-Xloggc:C:\whereever\jvm.log -verbose:gc -XX:+PrintGCDateStamps
ON an IBM JVM:
-Xverbosegclog:C:\whereever\jvm.log
foreach is useful if you have a array or other IEnumerable Collection of data. but for can be used for access elements of an array that can be accessed by their index.
just use the full url as href like this:
<a href="https://www.example.com/" target="_blank">page link</a>
I faced the same problem when I was doing it on windows 10. The problem could be that the path is not defined for manage.py in the environment variables. I did the following steps and it worked out for me!
I really hope it works!
#input_box {
margin: 0 auto;
text-align: left;
}
#div {
text-align: center;
}
<div id="div">
<label for="input_box">Input: </label><input type="text" id="input_box" name="input_box" />
</div>
or you could do it using padding, but this is not that great of an idea.
Drawable d = getResources().getDrawable(android.R.drawable.ic_dialog_email);
ImageView image = (ImageView)findViewById(R.id.image);
image.setImageDrawable(d);
You should use labels attribute inside plot function and the value of this attribute should be the vector containing the values that you want for each point to have.
int index = dt.Rows.IndexOf(row);
But you're probably better off using a for loop instead of foreach.
I also struggled with HOME button for awhile. I wanted to stop/skip a background service (which polls location) when user clicks HOME button.
here is what I implemented as "hack-like" solution;
keep the state of the app on SharedPreferences using boolean value
on each activity
onResume() -> set appactive=true
onPause() -> set appactive=false
and the background service checks the appstate in each loop, skips the action
IF appactive=false
it works well for me, at least not draining the battery anymore, hope this helps....
<!DOCTYPE html>_x000D_
<html>_x000D_
<head>_x000D_
<title>Private</title>_x000D_
_x000D_
<!-- local links -->_x000D_
<style>_x000D_
_x000D_
_x000D_
body{_x000D_
background-color:#6e6969;_x000D_
text-align:center;_x000D_
}_x000D_
body .form_wrapper{_x000D_
_x000D_
display:inline-block;_x000D_
background-color: #fff;_x000D_
border-radius: 5px;_x000D_
height: auto;_x000D_
padding: 15px 18px;_x000D_
margin: 10% auto;_x000D_
margin-left: auto;_x000D_
margin-right: auto;_x000D_
} _x000D_
</style>_x000D_
</head>_x000D_
<body>_x000D_
<div class = "form_wrapper">_x000D_
<form method="post" action="function.php">_x000D_
<h1 class = "formHeading">Admin login form</h1>_x000D_
<input type = "text" name = "username" id = "username"placeholder = "Enter Username" required = "required">_x000D_
<input type = "password" name = "password" id = "password" placeholder = "Enter password" required = "required">_x000D_
<button type = "submit" >Login</button>_x000D_
<a href = "#"> froget password!</a>_x000D_
<a href = "#"><span>?</span>help</a>_x000D_
</form>_x000D_
_x000D_
</div>_x000D_
</body>_x000D_
_x000D_
_x000D_
</html>
_x000D_
There's no reason to use set
unless referring to an object reference. It's good practice to only use it in that context. For all other simple data types, just use an assignment operator. It's a good idea to dim
(dimension) ALL variables however:
Examples of simple data types would be integer
, long
, boolean
, string
. These are just data types and do not have their own methods and properties.
Dim i as Integer
i = 5
Dim myWord as String
myWord = "Whatever I want"
An example of an object
would be a Range
, a Worksheet
, or a Workbook
. These have their own methods and properties.
Dim myRange as Range
Set myRange = Sheet1.Range("A1")
If you try to use the last line without Set
, VB will throw an error. Now that you have an object
declared you can access its properties and methods.
myString = myRange.Value
Instead of saying:
if [ "$cms" != "wordpress" && "$cms" != "meganto" && "$cms" != "typo3" ]; then
say:
if [[ "$cms" != "wordpress" && "$cms" != "meganto" && "$cms" != "typo3" ]]; then
You might also want to refer to Conditional Constructs.
As others already replied, it's late to write unit tests, but not too late. The question is whether your code is testable or not. Indeed, it's not easy to put existing code under test, there is even a book about this: Working Effectively with Legacy Code (see key points or precursor PDF).
Now writing the unit tests or not is your call. You just need to be aware that it could be a tedious task. You might tackle this to learn unit-testing or consider writing acceptance (end-to-end) tests first, and start writing unit tests when you'll change the code or add new feature to the project.
Shorter way is do it as follows:
private char[][] table = {{'1', '2', '3'}, {'4', '5', '6'}, {'7', '8', '9'}};
I'm not sure if my answer would help.
The short answer is, you don't really need/want to know the type of a variable to use it.
If you need to give a type to a static variable, then you may simply use auto.
In more sophisticated case where you want to use "auto" in a class or struct, I would suggest use template with decltype.
For example, say you are using someone else's library and it has a variable called "unknown_var" and you would want to put it in a vector or struct, you can totally do this:
template <typename T>
struct my_struct {
int some_field;
T my_data;
};
vector<decltype(unknown_var)> complex_vector;
vector<my_struct<decltype(unknown_var)> > simple_vector
Hope this helps.
EDIT: For good measure, here is the most complex case that I can think of: having a global variable of unknown type. In this case you would need c++14 and template variable.
Something like this:
template<typename T> vector<T> global_var;
void random_func (auto unknown_var) {
global_var<decltype(unknown_var)>.push_back(unknown_var);
}
It's still a bit tedious but it's as close as you can get to typeless languages. Just make sure whenever you reference template variable, always put the template specification there.
Fixed positioning doesn't work on iOS like it does on computers.
Imagine you have a sheet of paper (the webpage) under a magnifying glass(the viewport), if you move the magnifying glass and your eye, you see a different part of the page. This is how iOS works.
Now there is a sheet of clear plastic with a word on it, this sheet of plastic stays stationary no matter what (the position:fixed elements). So when you move the magnifying glass the fixed element appears to move.
Alternatively, instead of moving the magnifying glass, you move the paper (the webpage), keeping the sheet of plastic and magnifying glass still. In this case the word on the sheet of plastic will appear to stay fixed, and the rest of the content will appear to move (because it actually is) This is a traditional desktop browser.
So in iOS the viewport moves, in a traditional browser the webpage moves. In both cases the fixed elements stay still in reality; although on iOS the fixed elements appear to move.
The way to get around this, is to follow the last few paragraphs in this article
(basically disable scrolling altogether, have the content in a separate scrollable div (see the blue box at the top of the linked article), and the fixed element positioned absolutely)
"position:fixed" now works as you'd expect in iOS5.
... onkeydown="if(value.length>500)value=value.substr(0,500); if(value.length==500)return false;" ...
It ought to work.
Yes, there is a maximum, but it's system dependent. Try it and see, doubling until you hit a limit then searching down. At least with Sun JRE 1.6 on linux you get interesting if not always informative error messages (peregrino is netbook running 32 bit ubuntu with 2G RAM and no swap):
peregrino:$ java -Xmx4096M -cp bin WheelPrimes
Invalid maximum heap size: -Xmx4096M
The specified size exceeds the maximum representable size.
Could not create the Java virtual machine.
peregrino:$ java -Xmx4095M -cp bin WheelPrimes
Error occurred during initialization of VM
Incompatible minimum and maximum heap sizes specified
peregrino:$ java -Xmx4092M -cp bin WheelPrimes
Error occurred during initialization of VM
The size of the object heap + VM data exceeds the maximum representable size
peregrino:$ java -Xmx4000M -cp bin WheelPrimes
Error occurred during initialization of VM
Could not reserve enough space for object heap
Could not create the Java virtual machine.
(experiment reducing from 4000M until)
peregrino:$ java -Xmx2686M -cp bin WheelPrimes
(normal execution)
Most are self explanatory, except -Xmx4095M which is rather odd (maybe a signed/unsigned comparison?), and that it claims to reserve 2686M on a 2GB machine with no swap. But it does hint that the maximum size is 4G not 2G for a 32 bit VM, if the OS allows you to address that much.
f = open("Path/To/Your/File.txt", "w") # 'r' for reading and 'w' for writing
f.write("Hello World from " + f.name) # Write inside file
f.close() # Close file
# Method 2shush
with open("Path/To/Your/File.txt", "w") as f: # Opens file and casts as f
f.write("Hello World form " + f.name) # Writing
# File closed automatically
Using Javascript
var side = document.querySelector("#side");_x000D_
var main = document.querySelector("#main");_x000D_
var togg = document.querySelector("#toogle");_x000D_
var width = window.innerWidth;_x000D_
_x000D_
window.document.addEventListener("click", function() {_x000D_
_x000D_
if (side.clientWidth == 0) {_x000D_
// alert(side.clientWidth);_x000D_
side.style.width = "200px";_x000D_
main.style.marginLeft = "200px";_x000D_
main.style.width = (width - 200) + "px";_x000D_
togg.innerHTML = "Min";_x000D_
} else {_x000D_
// alert(side.clientWidth);_x000D_
side.style.width = "0";_x000D_
main.style.marginLeft = "0";_x000D_
main.style.width = width + "px"; _x000D_
togg.innerHTML = "Max";_x000D_
}_x000D_
_x000D_
}, false);
_x000D_
button {_x000D_
width: 100px;_x000D_
position: relative; _x000D_
display: block; _x000D_
}_x000D_
_x000D_
div {_x000D_
position: absolute;_x000D_
left: 0;_x000D_
border: 3px solid #73AD21;_x000D_
display: inline-block;_x000D_
transition: 0.5s; _x000D_
}_x000D_
_x000D_
#side {_x000D_
left: 0;_x000D_
width: 0px;_x000D_
background-color: red;_x000D_
}_x000D_
_x000D_
#main {_x000D_
width: 100%;_x000D_
background-color: white; _x000D_
}
_x000D_
<button id="toogle">Max</button>_x000D_
<div id="side">Sidebar</div>_x000D_
<div id="main">Main</div>
_x000D_
You could make it through iframes... I made something, but my only problem for now is syncing those divs to scroll simultaneous... its terrible way, because its like you load 2 websites, but the only way I found... you could also work with divs and overflow I guess...
This should solve your problem, please feel free to offer fixes. This method will account also for daylight saving time for the given date.
dateWithTimeZone = (timeZone, year, month, day, hour, minute, second) => {
let date = new Date(Date.UTC(year, month, day, hour, minute, second));
let utcDate = new Date(date.toLocaleString('en-US', { timeZone: "UTC" }));
let tzDate = new Date(date.toLocaleString('en-US', { timeZone: timeZone }));
let offset = utcDate.getTime() - tzDate.getTime();
date.setTime( date.getTime() + offset );
return date;
};
How to use with timezone and local time:
dateWithTimeZone("America/Los_Angeles",2019,8,8,0,0,0)
MrOBrian's answer shows why your current code doesn't work, with the missing trailing ]
and quotes, but here's an easier way to make it work:
onchange='mySelectHandler(this)'
And then:
function mySelectHandler(el){
var mySelect = $(el)
// get selected value
alert ("selected " + mySelect.val())
}
Or better still, remove the inline event handler altogether and bind the event handler with jQuery:
$('select[name="a[b]"]').change(function() {
var mySelect = $(this);
alert("selected " mySelect.val());
});
That last would need to be in a document.ready handler or in a script block that appears after the select element. If you want to run the same function for other selects simply change the selector to something that applies to all, e.g., all selects would be $('select')
, or all with a particular class would be $('select.someClass')
.
Easiest way is used the Date Using Date() and getTime()
Date dte=new Date();
long milliSeconds = dte.getTime();
String strLong = Long.toString(milliSeconds);
System.out.println(milliSeconds)
<html>
<head>
<meta charset="utf-8">
<title>Best Login Page design in html and css</title>
<style type="text/css">
body {
background-color: #f4f4f4;
color: #5a5656;
font-family: 'Open Sans', Arial, Helvetica, sans-serif;
font-size: 16px;
line-height: 1.5em;
}
a { text-decoration: none; }
h1 { font-size: 1em; }
h1, p {
margin-bottom: 10px;
}
strong {
font-weight: bold;
}
.uppercase { text-transform: uppercase; }
/* ---------- LOGIN ---------- */
#login {
margin: 50px auto;
width: 300px;
}
form fieldset input[type="text"], input[type="password"] {
background-color: #e5e5e5;
border: none;
border-radius: 3px;
-moz-border-radius: 3px;
-webkit-border-radius: 3px;
color: #5a5656;
font-family: 'Open Sans', Arial, Helvetica, sans-serif;
font-size: 14px;
height: 50px;
outline: none;
padding: 0px 10px;
width: 280px;
-webkit-appearance:none;
}
form fieldset input[type="submit"] {
background-color: #008dde;
border: none;
border-radius: 3px;
-moz-border-radius: 3px;
-webkit-border-radius: 3px;
color: #f4f4f4;
cursor: pointer;
font-family: 'Open Sans', Arial, Helvetica, sans-serif;
height: 50px;
text-transform: uppercase;
width: 300px;
-webkit-appearance:none;
}
form fieldset a {
color: #5a5656;
font-size: 10px;
}
form fieldset a:hover { text-decoration: underline; }
.btn-round {
background-color: #5a5656;
border-radius: 50%;
-moz-border-radius: 50%;
-webkit-border-radius: 50%;
color: #f4f4f4;
display: block;
font-size: 12px;
height: 50px;
line-height: 50px;
margin: 30px 125px;
text-align: center;
text-transform: uppercase;
width: 50px;
}
.facebook-before {
background-color: #0064ab;
border-radius: 3px 0px 0px 3px;
-moz-border-radius: 3px 0px 0px 3px;
-webkit-border-radius: 3px 0px 0px 3px;
color: #f4f4f4;
display: block;
float: left;
height: 50px;
line-height: 50px;
text-align: center;
width: 50px;
}
.facebook {
background-color: #0079ce;
border: none;
border-radius: 0px 3px 3px 0px;
-moz-border-radius: 0px 3px 3px 0px;
-webkit-border-radius: 0px 3px 3px 0px;
color: #f4f4f4;
cursor: pointer;
height: 50px;
text-transform: uppercase;
width: 250px;
}
.twitter-before {
background-color: #189bcb;
border-radius: 3px 0px 0px 3px;
-moz-border-radius: 3px 0px 0px 3px;
-webkit-border-radius: 3px 0px 0px 3px;
color: #f4f4f4;
display: block;
float: left;
height: 50px;
line-height: 50px;
text-align: center;
width: 50px;
}
.twitter {
background-color: #1bb2e9;
border: none;
border-radius: 0px 3px 3px 0px;
-moz-border-radius: 0px 3px 3px 0px;
-webkit-border-radius: 0px 3px 3px 0px;
color: #f4f4f4;
cursor: pointer;
height: 50px;
text-transform: uppercase;
width: 250px;
}
</style>
</head>
<body>
<div id="login">
<h1><strong>Welcome.</strong> Please login.</h1>
<form action="javascript:void(0);" method="get">
<fieldset>
<p><input type="text" required value="Username" onBlur="if(this.value=='')this.value='Username'" onFocus="if(this.value=='Username')this.value='' "></p>
<p><input type="password" required value="Password" onBlur="if(this.value=='')this.value='Password'" onFocus="if(this.value=='Password')this.value='' "></p>
<p><a href="#">Forgot Password?</a></p>
<p><input type="submit" value="Login"></p>
</fieldset>
</form>
<p><span class="btn-round">or</span></p>
<p>
<a class="facebook-before"></a>
<button class="facebook">Login Using Facbook</button>
</p>
<p>
<a class="twitter-before"></a>
<button class="twitter">Login Using Twitter</button>
</p>
</div> <!-- end login -->
</body>
</html>
I'd rather trust JDK over System property. Following is a working snippet.
private boolean checkIfStringContainsNewLineCharacters(String str){
if(!StringUtils.isEmpty(str)){
Scanner scanner = new Scanner(str);
scanner.nextLine();
boolean hasNextLine = scanner.hasNextLine();
scanner.close();
return hasNextLine;
}
return false;
}
Run your program with valgrind of linked to efence. That will tell you where the pointer is being dereferenced and most likely fix your problem if you fix all the errors they tell you about.
You can do so by creating an array of dtype=object
. If you try to assign a long string to a normal numpy array, it truncates the string:
>>> a = numpy.array(['apples', 'foobar', 'cowboy'])
>>> a[2] = 'bananas'
>>> a
array(['apples', 'foobar', 'banana'],
dtype='|S6')
But when you use dtype=object
, you get an array of python object references. So you can have all the behaviors of python strings:
>>> a = numpy.array(['apples', 'foobar', 'cowboy'], dtype=object)
>>> a
array([apples, foobar, cowboy], dtype=object)
>>> a[2] = 'bananas'
>>> a
array([apples, foobar, bananas], dtype=object)
Indeed, because it's an array of objects, you can assign any kind of python object to the array:
>>> a[2] = {1:2, 3:4}
>>> a
array([apples, foobar, {1: 2, 3: 4}], dtype=object)
However, this undoes a lot of the benefits of using numpy, which is so fast because it works on large contiguous blocks of raw memory. Working with python objects adds a lot of overhead. A simple example:
>>> a = numpy.array(['abba' for _ in range(10000)])
>>> b = numpy.array(['abba' for _ in range(10000)], dtype=object)
>>> %timeit a.copy()
100000 loops, best of 3: 2.51 us per loop
>>> %timeit b.copy()
10000 loops, best of 3: 48.4 us per loop
This is how I managed to do what I was trying to do:
[Test]
public void TransferHandlesDisconnect()
{
// ... set up config here
var methodTester = new Mock<Transfer>(configInfo);
methodTester.CallBase = true;
methodTester
.Setup(m =>
m.GetFile(
It.IsAny<IFileConnection>(),
It.IsAny<string>(),
It.IsAny<string>()
))
.Throws<System.IO.IOException>();
methodTester.Object.TransferFiles("foo1", "foo2");
Assert.IsTrue(methodTester.Object.Status == TransferStatus.TransferInterrupted);
}
If there is a problem with this method, I would like to know; the other answers suggest I am doing this wrong, but this was exactly what I was trying to do.
git will show changes in commits that affect the index, such as git rm
. It does not store a log of all git commands you execute.
However, a large number of git commands affect the index in some way, such as creating a new branch. These changes will show up in the commit history, which you can view with git log
.
However, there are destructive changes that git can't track, such as git reset
.
So, to answer your question, git does not store an absolute history of git
commands you've executed in a repository. However, it is often possible to interpolate what command you've executed via the commit history.
My answer does not require any additional libraries, and it's easy to understand. But you have to notice that if there's more than one number inside a string, my code will concatenate them together.
def search_number_string(string):
index_list = []
del index_list[:]
for i, x in enumerate(string):
if x.isdigit() == True:
index_list.append(i)
start = index_list[0]
end = index_list[-1] + 1
number = string[start:end]
return number
You can create a utility class to check if the class represents any Collection, Map or Array
public static boolean isCollection(Class<?> rawPropertyType) {
return Collection.class.isAssignableFrom(rawPropertyType) ||
Map.class.isAssignableFrom(rawPropertyType) ||
rawPropertyType.isArray();
}
THe easiest way to do so is:
function findChild(idOfElement, idOfChild){
let element = document.getElementById(idOfElement);
return element.querySelector('[id=' + idOfChild + ']');
}
or better readable:
findChild = (idOfElement, idOfChild) => {
let element = document.getElementById(idOfElement);
return element.querySelector(`[id=${idOfChild}]`);
}
I found it in:
\xampp\php\logs\php_error_log
Bootstrap 2.3.2
<ul class="inline">
<li>...</li>
</ul>
Bootstrap 3
<ul class="list-inline">
<li>...</li>
</ul>
Bootstrap 4
<ul class="list-inline">
<li class="list-inline-item">Lorem ipsum</li>
<li class="list-inline-item">Phasellus iaculis</li>
<li class="list-inline-item">Nulla volutpat</li>
</ul>
source: http://v4-alpha.getbootstrap.com/content/typography/#inline
Updated link https://getbootstrap.com/docs/4.4/content/typography/#inline
Try this which uses globs rather than regular expressions so it will only pick out the file names that end in .dbf
filenames <- Sys.glob("*.dbf")
I found several ways to compile python scripts into bytecode
Using py_compile
in terminal:
python -m py_compile File1.py File2.py File3.py ...
-m
specifies the module(s) name to be compiled.
Or, for interactive compilation of files
python -m py_compile -
File1.py
File2.py
File3.py
.
.
.
Using py_compile.compile
:
import py_compile
py_compile.compile('YourFileName.py')
Using py_compile.main()
:
It compiles several files at a time.
import py_compile
py_compile.main(['File1.py','File2.py','File3.py'])
The list can grow as long as you wish. Alternatively, you can obviously pass a list of files in main or even file names in command line args.
Or, if you pass ['-']
in main then it can compile files interactively.
Using compileall.compile_dir()
:
import compileall
compileall.compile_dir(direname)
It compiles every single Python file present in the supplied directory.
Using compileall.compile_file()
:
import compileall
compileall.compile_file('YourFileName.py')
Take a look at the links below:
To slow down your game, use pygame.clock.tick(10)
You need to declare timer
outside the function. Otherwise, you get a brand new variable on each function invocation.
var timer;
function endAndStartTimer() {
window.clearTimeout(timer);
//var millisecBeforeRedirect = 10000;
timer = window.setTimeout(function(){alert('Hello!');},10000);
}
For me, I would go with interfaces in many cases. But I prefer abstract classes in some cases.
Classes in OO generaly refers to implementation. I use abstract classes when I want to force some implementation details to the childs else I go with interfaces.
Of course, abstract classes are useful not only in forcing implementation but also in sharing some specific details among many related classes.
Along with the embed, I also had to install the Google Cast extension in my browser.
<iframe width="1280" height="720" src="https://www.youtube.com/embed/4u856utdR94" frameborder="0" allowfullscreen></iframe>
If you are using Maven
Add the compiler plugin to pom.xml
under the top-level project
node:
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
</plugins>
</build>
(Hoisted from the comments.)
Note: If you don't mind reimporting your project, then the only thing you really need to do is change the pom and reimport the project, then IntelliJ will pick up the correct settings and you don't have to manually change them.
in C++ expression a % b
returns remainder of division of a by b (if they are positive. For negative numbers sign of result is implementation defined). For example:
5 % 2 = 1
13 % 5 = 3
With this knowledge we can try to understand your code. Condition count % 6 == 5
means that newline will be written when remainder of division count by 6 is five. How often does that happen? Exactly 6 lines apart (excercise : write numbers 1..30 and underline the ones that satisfy this condition), starting at 6-th line (count = 5).
To get desired behaviour from your code, you should change condition to count % 5 == 4
, what will give you newline every 5 lines, starting at 5-th line (count = 4).
So there's another way (and it is portable to some extent_
(python <<EOF
import fnmatch
import os
import os.path as path
import time
matches = []
def find(dirname=None, newerThan=3*24*3600, olderThan=None):
for root, dirnames, filenames in os.walk(dirname or '.'):
for filename in fnmatch.filter(filenames, '*'):
filepath = os.path.join(root, filename)
matches.append(path)
ts_now = time.time()
newer = ts_now - path.getmtime(filepath) < newerThan
older = ts_now - path.getmtime(filepath) > newerThan
if newerThan and newer or olderThan and older: print filepath
for dirname in dirnames:
if dirname not in ['.', '..']:
print 'dir:', dirname
find(dirname)
find('.')
EOF
) | xargs -I '{}' echo found file modified within 3 days '{}'
There are two potentially major problem with the leading answer to this question. First, as per the docs:
public BufferedImage getSubimage(int x, int y, int w, int h)
Returns a subimage defined by a specified rectangular region. The returned BufferedImage shares the same data array as the original image.
Essentially, what this means is that result from getSubimage acts as a pointer which points at a subsection of the original image.
Why is this important? Well, if you are planning to edit the subimage for any reason, the edits will also happen to the original image. For example, I ran into this problem when I was using the smaller image in a separate window to zoom in on the original image. (kind of like a magnifying glass). I made it possible to invert the colors to see certain details more easily, but the area that was "zoomed" also got inverted in the original image! So there was a small section of the original image that had inverted colors while the rest of it remained normal. In many cases, this won't matter, but if you want to edit the image, or if you just want a copy of the cropped section, you might want to consider a method.
Which brings us to the second problem. Fortunately, it is not as big a problem as the first. getSubImage shares the same data array as the original image. That means that the entire original image is still stored in memory. Assuming that by "crop" the image you actually want a smaller image, you will need to redraw it as a new image rather than just get the subimage.
Try this:
BufferedImage img = image.getSubimage(startX, startY, endX, endY); //fill in the corners of the desired crop location here
BufferedImage copyOfImage = new BufferedImage(img.getWidth(), img.getHeight(), BufferedImage.TYPE_INT_RGB);
Graphics g = copyOfImage.createGraphics();
g.drawImage(img, 0, 0, null);
return copyOfImage; //or use it however you want
This technique will give you the cropped image you are looking for by itself, without the link back to the original image. This will preserve the integrity of the original image as well as save you the memory overhead of storing the larger image. (If you do dump the original image later)
To answer this question from my understanding...
An authentication system that uses REST so that you do not need to actually track or manage the users in your system. This is done by using the HTTP methods POST, GET, PUT, DELETE. We take these 4 methods and think of them in terms of database interaction as CREATE, READ, UPDATE, DELETE (but on the web we use POST and GET because that is what anchor tags support currently). So treating POST and GET as our CREATE/READ/UPDATE/DELETE (CRUD) then we can design routes in our web application that will be able to deduce what action of CRUD we are achieving.
For example, in a Ruby on Rails application we can build our web app such that if a user who is logged in visits http://store.com/account/logout then the GET of that page can viewed as the user attempting to logout. In our rails controller we would build an action in that logs the user out and sends them back to the home page.
A GET on the login page would yield a form. a POST on the login page would be viewed as a login attempt and take the POST data and use it to login.
To me, it is a practice of using HTTP methods mapped to their database meaning and then building an authentication system with that in mind you do not need to pass around any session id's or track sessions.
I'm still learning -- if you find anything I have said to be wrong please correct me, and if you learn more post it back here. Thanks.
sudo apt-get install ruby-dev
This command solved the problem for me!
Technically, to repair your statement, you can add LIMIT 1
to the subquery to ensure that at most 1 row is returned. That would remove the error, your code would still be nonsense.
... 'SELECT store_key FROM store LIMIT 1' ...
Practically, you want to match rows somehow instead of picking an arbitrary row from the remote table store
to update every row of your local table customer
.
Your rudimentary question doesn't provide enough details, so I am assuming a text column match_name
in both tables (and UNIQUE
in store
) for the sake of this example:
... 'SELECT store_key FROM store
WHERE match_name = ' || quote_literal(customer.match_name) ...
But that's an extremely expensive way of doing things.
Ideally, you should completely rewrite the statement.
UPDATE customer c
SET customer_id = s.store_key
FROM dblink('port=5432, dbname=SERVER1 user=postgres password=309245'
,'SELECT match_name, store_key FROM store')
AS s(match_name text, store_key integer)
WHERE c.match_name = s.match_name
AND c.customer_id IS DISTINCT FROM s.store_key;
This remedies a number of problems in your original statement.
Obviously, the basic problem leading to your error is fixed.
It's almost always better to join in additional relations in the FROM
clause of an UPDATE
statement than to run correlated subqueries for every individual row.
When using dblink, the above becomes a thousand times more important. You do not want to call dblink()
for every single row, that's extremely expensive. Call it once to retrieve all rows you need.
With correlated subqueries, if no row is found in the subquery, the column gets updated to NULL, which is almost always not what you want.
In my updated form, the row only gets updated if a matching row is found. Else, the row is not touched.
Normally, you wouldn't want to update rows, when nothing actually changes. That's expensively doing nothing (but still produces dead rows). The last expression in the WHERE
clause prevents such empty updates:
AND c.customer_id IS DISTINCT FROM sub.store_key
If I get you right, you want to add the sensors
collection to the node
. If you have a mapping between both models you can either use the include
functionality explained here or the values
getter defined on every instance. You can find the docs for that here.
The latter can be used like this:
db.Sensors.findAll({
where: {
nodeid: node.nodeid
}
}).success(function (sensors) {
var nodedata = node.values;
nodedata.sensors = sensors.map(function(sensor){ return sensor.values });
// or
nodedata.sensors = sensors.map(function(sensor){ return sensor.toJSON() });
nodesensors.push(nodedata);
response.json(nodesensors);
});
There is chance that nodedata.sensors = sensors
could work as well.
Global title: In newer releases of matplotlib one can use Figure.suptitle() method of Figure
:
import matplotlib.pyplot as plt
fig = plt.gcf()
fig.suptitle("Title centered above all subplots", fontsize=14)
Alternatively (based on @Steven C. Howell's comment below (thank you!)), use the matplotlib.pyplot.suptitle() function:
import matplotlib.pyplot as plt
# plot stuff
# ...
plt.suptitle("Title centered above all subplots", fontsize=14)
Seems pretty straightforward, according to the docs on the page you linked (emphasis mine).
requests.get(url, params=None, headers=None, cookies=None, auth=None, timeout=None)
Sends a GET request. Returns
Response
object.Parameters:
- url – URL for the new
Request
object.- params – (optional) Dictionary of GET Parameters to send with the
Request
.- headers – (optional) Dictionary of HTTP Headers to send with the
Request
.- cookies – (optional) CookieJar object to send with the
Request
.- auth – (optional) AuthObject to enable Basic HTTP Auth.
- timeout – (optional) Float describing the timeout of the request.
npm i webpack -g
installs webpack globally on your system, that makes it available in terminal window.
Bart Kiers, your regex has a couple issues. The best way to do that is this:
(.*[a-z].*) // For lower cases
(.*[A-Z].*) // For upper cases
(.*\d.*) // For digits
In this way you are searching no matter if at the beginning, at the end or at the middle. In your have I have a lot of troubles with complex passwords.
Try this:
SqlParameter[] parameters = new SqlParameter[1];
SqlParameter planIndexParameter = new SqlParameter("@AgeIndex", SqlDbType.Int);
planIndexParameter.IsNullable = true; // Add this line
planIndexParameter.Value = (AgeItem.AgeIndex== null) ? DBNull.Value : AgeItem.AgeIndex== ;
parameters[0] = planIndexParameter;
@Id
@Column(name = "COLUMN_NAME", nullable = false)
public Long getId() {
return id;
}
@OneToMany(cascade = CascadeType.ALL, fetch = FetchType.LAZY, targetEntity = SomeCustomEntity.class)
@JoinColumn(name = "COLUMN_NAME", referencedColumnName = "COLUMN_NAME", nullable = false, updatable = false, insertable = false)
@org.hibernate.annotations.Cascade(value = org.hibernate.annotations.CascadeType.ALL)
public List<SomeCustomEntity> getAbschreibareAustattungen() {
return abschreibareAustattungen;
}
If you have already mapped a column and have accidentaly set the same values for name and referencedColumnName in @JoinColumn hibernate gives the same stupid error
Error:
Caused by: org.hibernate.MappingException: Repeated column in mapping for entity: com.testtest.SomeCustomEntity column: COLUMN_NAME (should be mapped with insert="false" update="false")
Try this
Dim app As Excel.Application = Nothing
Dim Active_Cell As Excel.Range = Nothing
Try
app = CType(Marshal.GetActiveObject("Excel.Application"), Excel.Application)
Active_Cell = app.ActiveCell
Catch ex As Exception
MsgBox(ex.Message)
Exit Sub
End Try
' .address will return the cell reference :)
You can achieve it:
$(document).ready(function(){
$('#textBox').keyup(function () {alert('changed');});
});
or with change (handle copy paste with right click):
$(document).ready(function(){
$('#textBox2').change(function () {alert('changed');});
});
Here is Demo
I have a Samsung Duos device with Android 4.4.4 and the method suggested by Seetha in the accepted answer (i.e. call getDeviceIdDs) does not work for me, as the method does not exist. I was able to recover all the information I needed by calling method "getDefault(int slotID)", as shown below:
public static void samsungTwoSims(Context context) {
TelephonyManager telephony = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
try{
Class<?> telephonyClass = Class.forName(telephony.getClass().getName());
Class<?>[] parameter = new Class[1];
parameter[0] = int.class;
Method getFirstMethod = telephonyClass.getMethod("getDefault", parameter);
Log.d(TAG, getFirstMethod.toString());
Object[] obParameter = new Object[1];
obParameter[0] = 0;
TelephonyManager first = (TelephonyManager) getFirstMethod.invoke(null, obParameter);
Log.d(TAG, "Device Id: " + first.getDeviceId() + ", device status: " + first.getSimState() + ", operator: " + first.getNetworkOperator() + "/" + first.getNetworkOperatorName());
obParameter[0] = 1;
TelephonyManager second = (TelephonyManager) getFirstMethod.invoke(null, obParameter);
Log.d(TAG, "Device Id: " + second.getDeviceId() + ", device status: " + second.getSimState()+ ", operator: " + second.getNetworkOperator() + "/" + second.getNetworkOperatorName());
} catch (Exception e) {
e.printStackTrace();
}
}
Also, I rewrote the code that iteratively tests for methods to recover this information so that it uses an array of method names instead of a sequence of try/catch. For instance, to determine if we have two active SIMs we could do:
private static String[] simStatusMethodNames = {"getSimStateGemini", "getSimState"};
public static boolean hasTwoActiveSims(Context context) {
boolean first = false, second = false;
for (String methodName: simStatusMethodNames) {
// try with sim 0 first
try {
first = getSIMStateBySlot(context, methodName, 0);
// no exception thrown, means method exists
second = getSIMStateBySlot(context, methodName, 1);
return first && second;
} catch (GeminiMethodNotFoundException e) {
// method does not exist, nothing to do but test the next
}
}
return false;
}
This way, if a new method name is suggested for some device, you can simply add it to the array and it should work.
If you are going to trust a sub-domain, for example, aaa.localhost,
Please don't do it like mkcert localhost *.localhost 127.0.0.1
, this will not work since some browser doesn't accept wildcard subdomain.
Maybe try mkcert localhost aaa.localhost 127.0.0.1
.
<ul class="icons-ul">
<li><i class="icon-play-sign"></i> <a>option</a></li>
<li><i class="icon-play-sign"></i> <a>option</a></li>
<li><i class="icon-play-sign"></i> <a>option</a></li>
<li><i class="icon-play-sign"></i> <a>option</a></li>
<li><i class="icon-play-sign"></i> <a>option</a></li>
</ul>
All the font awesome icons comes default with Bootstrap.
You need to add a Serializable
attribute to the class which you want to serialize.
[Serializable]
public class OrgPermission
I was looking for a CSS-only solution and found this works for iOS browsers (tested safari and chrome).
It does not have the same behavior on desktop chrome, but the pain of selecting is not as great there because you have a lot more options as a user (double-click, ctrl-a, etc):
.select-all-on-touch {
-webkit-user-select: all;
user-select: all;
}
Try adding the following middleware to your NodeJS/Express app (I have added some comments for your convenience):
// Add headers
app.use(function (req, res, next) {
// Website you wish to allow to connect
res.setHeader('Access-Control-Allow-Origin', 'http://localhost:8888');
// Request methods you wish to allow
res.setHeader('Access-Control-Allow-Methods', 'GET, POST, OPTIONS, PUT, PATCH, DELETE');
// Request headers you wish to allow
res.setHeader('Access-Control-Allow-Headers', 'X-Requested-With,content-type');
// Set to true if you need the website to include cookies in the requests sent
// to the API (e.g. in case you use sessions)
res.setHeader('Access-Control-Allow-Credentials', true);
// Pass to next layer of middleware
next();
});
Hope that helps!
Totally possible with the python-varname package (python3):
from varname import nameof
s = 'Hey!'
print (nameof(s))
Output:
s
Get the package here:
You can try put in a shortcut to the site and tell the .bat file to open that.
start Google.HTML
exit
There is a tool for static code analysis called PHP Analyzer. PHP Analyzer is now a deprecated project, but you still can access it on the legacy branch.
Among many types of static analysis it also provides basic auto-fixing functionality, see the documentation.
As @JDlugosz points out in the comments, Herb gives other advice in another (later?) talk, see roughly from here: https://youtu.be/xnqTKD8uD64?t=54m50s.
His advice boils down to only using value parameters for a function f
that takes so-called sink arguments, assuming you will move construct from these sink arguments.
This general approach only adds the overhead of a move constructor for both lvalue and rvalue arguments compared to an optimal implementation of f
tailored to lvalue and rvalue arguments respectively. To see why this is the case, suppose f
takes a value parameter, where T
is some copy and move constructible type:
void f(T x) {
T y{std::move(x)};
}
Calling f
with an lvalue argument will result in a copy constructor being called to construct x
, and a move constructor being called to construct y
. On the other hand, calling f
with an rvalue argument will cause a move constructor to be called to construct x
, and another move constructor to be called to construct y
.
In general, the optimal implementation of f
for lvalue arguments is as follows:
void f(const T& x) {
T y{x};
}
In this case, only one copy constructor is called to construct y
. The optimal implementation of f
for rvalue arguments is, again in general, as follows:
void f(T&& x) {
T y{std::move(x)};
}
In this case, only one move constructor is called to construct y
.
So a sensible compromise is to take a value parameter and have one extra move constructor call for either lvalue or rvalue arguments with respect to the optimal implementation, which is also the advice given in Herb's talk.
As @JDlugosz pointed out in the comments, passing by value only makes sense for functions that will construct some object from the sink argument. When you have a function f
that copies its argument, the pass-by-value approach will have more overhead than a general pass-by-const-reference approach. The pass-by-value approach for a function f
that retains a copy of its parameter will have the form:
void f(T x) {
T y{...};
...
y = std::move(x);
}
In this case, there is a copy construction and a move assignment for an lvalue argument, and a move construction and move assignment for an rvalue argument. The most optimal case for an lvalue argument is:
void f(const T& x) {
T y{...};
...
y = x;
}
This boils down to an assignment only, which is potentially much cheaper than the copy constructor plus move assignment required for the pass-by-value approach. The reason for this is that the assignment might reuse existing allocated memory in y
, and therefore prevent (de)allocations, whereas the copy constructor will usually allocate memory.
For an rvalue argument the most optimal implementation for f
that retains a copy has the form:
void f(T&& x) {
T y{...};
...
y = std::move(x);
}
So, only a move assignment in this case. Passing an rvalue to the version of f
that takes a const reference only costs an assignment instead of a move assignment. So relatively speaking, the version of f
taking a const reference in this case as the general implementation is preferable.
So in general, for the most optimal implementation, you will need to overload or do some kind of perfect forwarding as shown in the talk. The drawback is a combinatorial explosion in the number of overloads required, depending on the number of parameters for f
in case you opt to overload on the value category of the argument. Perfect forwarding has the drawback that f
becomes a template function, which prevents making it virtual, and results in significantly more complex code if you want to get it 100% right (see the talk for the gory details).
If you modify your list, then use listIterator()
and iterate from last index (that is size()-1
respectively).
If you fail again, check your list structure.
Note that if you include android:id...
into the <include />
tag, it will override whatever id was defined inside the included layout. For example:
<include
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="@+id/some_id_if_needed"
layout="@layout/yourlayout" />
yourlayout.xml:
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="@+id/some_other_id">
<Button
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="@+id/button1" />
</LinearLayout>
Then you would reference this included layout in code as follows:
View includedLayout = findViewById(R.id.some_id_if_needed);
Button insideTheIncludedLayout = (Button)includedLayout.findViewById(R.id.button1);
This question has been out here a long time, but I wanted to contribute how I usually iterate through a JSON object. In the example below, I've shown a hard-coded string that contains the JSON, but the JSON string could just as easily have come from a web service or a file.
import json
def main():
# create a simple JSON array
jsonString = '{"key1":"value1","key2":"value2","key3":"value3"}'
# change the JSON string into a JSON object
jsonObject = json.loads(jsonString)
# print the keys and values
for key in jsonObject:
value = jsonObject[key]
print("The key and value are ({}) = ({})".format(key, value))
pass
if __name__ == '__main__':
main()
chunks = [data[100*i:100*(i+1)] for i in range(len(data)/100 + 1)]
This is equivalent to the accepted answer. For example, shortening to batches of 10 for readability:
data = range(35)
print [data[x:x+10] for x in xrange(0, len(data), 10)]
print [data[10*i:10*(i+1)] for i in range(len(data)/10 + 1)]
Outputs:
[[0, 1, 2, 3, 4, 5, 6, 7, 8, 9], [10, 11, 12, 13, 14, 15, 16, 17, 18, 19], [20, 21, 22, 23, 24, 25, 26, 27, 28, 29], [30, 31, 32, 33, 34]]
[[0, 1, 2, 3, 4, 5, 6, 7, 8, 9], [10, 11, 12, 13, 14, 15, 16, 17, 18, 19], [20, 21, 22, 23, 24, 25, 26, 27, 28, 29], [30, 31, 32, 33, 34]]
@echo off
echo Press any key to exit . . .
pause>nul
Both Nick and Adam's answers work really well.
I'd like to add a note if you want to allow latin characters like á
and ç
as I wanted to do:
jQuery.validator.addMethod('lettersonly', function(value, element) {
return this.optional(element) || /^[a-z áãâäàéêëèíîïìóõôöòúûüùçñ]+$/i.test(value);
}, "Letters and spaces only please");
There are many methods for running .jar file on windows. One of them is using the command prompt.
Steps :
Goto config/initializers/setup_mail.rb
Check whether the configuration there matches the configuration written in the development.rb
file.It should look like the following in both files:
config.action_mailer.smtp_settings = {
:address =>"[email protected]",
:port => 587,
:domain => "gmail.com",
:user_name => "[email protected]",
:password => "********",
:authentication => 'plain',
:enable_starttls_auto => true,
:openssl_verify_mode => 'none'
}
This will most certainly solve your problem.
Covert .ppk to id_rsa using tool PuttyGen, (http://mydailyfindingsit.blogspot.in/2015/08/create-keys-for-your-linux-machine.html) and
scp -C -i ./id_rsa -r /var/www/* [email protected]:/var/www
it should work !
there's a better way
# Larger example
rows = [('2006-03-28', 'BUY', 'IBM', 1000, 45.00),
('2006-04-05', 'BUY', 'MSOFT', 1000, 72.00),
('2006-04-06', 'SELL', 'IBM', 500, 53.00)]
c.executemany('insert into stocks values (?,?,?,?,?)', rows)
connection.commit()
In case it is useful... I was hitting the "10 $digest() iterations reached. Aborting!" error when using $window.history.back(); with IE9 (works fine in other browsers of course).
I got it to work by using:
setTimeout(function() {
$window.history.back();
},100);
There seem to be an endless number of solutions for this but I found this to be concise and elegant.
const numbers = [1,2,3,4];
const count = numbers.length;
const reducer = (adder, value) => (adder + value);
const average = numbers.map(x => x/count).reduce(reducer);
console.log(average); // 2.5
Or more consisely:
const numbers = [1,2,3,4];
const average = numbers.map(x => x/numbers.length).reduce((adder, value) => (adder + value));
console.log(average); // 2.5
Depending on your browser you may need to do explicit function calls because arrow functions are not supported:
const r = function (adder, value) {
return adder + value;
};
const m = function (x) {
return x/count;
};
const average = numbers.map(m).reduce(r);
console.log(average); // 2.5
Or:
const average1 = numbers
.map(function (x) {
return x/count;
})
.reduce(function (adder, value) {
return adder + value;
});
console.log(average1);
/prox/xxx/numa_maps gives some info there: N0=??? N1=???. But this result might be lower than the actual result, as it only count those which have been touched.
New Features in C99
I think that the most basic way to call methods is by setting a request on the child component. Then as soon as the child handles the request, it calls a callback method to reset the request.
The reset mechanism is necessary to be able to send the same request multiple times after each other.
In the render method of the parent:
const { request } = this.state;
return (<Child request={request} onRequestHandled={()->resetRequest()}/>);
The parent needs 2 methods, to communicate with its child in 2 directions.
sendRequest() {
const request = { param: "value" };
this.setState({ request });
}
resetRequest() {
const request = null;
this.setState({ request });
}
The child updates its internal state, copying the request from the props.
constructor(props) {
super(props);
const { request } = props;
this.state = { request };
}
static getDerivedStateFromProps(props, state) {
const { request } = props;
if (request !== state.request ) return { request };
return null;
}
Then finally it handles the request, and sends the reset to the parent:
componentDidMount() {
const { request } = this.state;
// todo handle request.
const { onRequestHandled } = this.props;
if (onRequestHandled != null) onRequestHandled();
}
Also worth noting the following from a document by the R Core Team summarizing changes in versions of R after v3.5.0 (here):
R has new serialization format (version 3) which supports custom serialization of ALTREP framework objects... Serialized data in format 3 cannot be read by versions of R prior to version 3.5.0.
I encountered this issue when I saved a workspace in v3.6.0, and then shared the file with a colleague that was using v3.4.2. I was able to resolve the issue by adding "version=2" to my save function.
In my case the issue was caused due to mismatch in .Xauthority file. Which initially showed up with "Invalid MIT-MAGIC-COOKIE-1" error and then "Error: cannot open display: :0.0" afterwards
Regenerating the .Xauthorityfile from the user under which I am running the vncserver and resetting the password with a restart of the vnc service and dbus service fixed the issue for me.
git revert
simply creates a new commit that is the opposite of an existing commit.
It leaves the files in the same state as if the commit that has been reverted never existed. For example, consider the following simple example:
$ cd /tmp/example
$ git init
Initialized empty Git repository in /tmp/example/.git/
$ echo "Initial text" > README.md
$ git add README.md
$ git commit -m "initial commit"
[master (root-commit) 3f7522e] initial commit
1 file changed, 1 insertion(+)
create mode 100644 README.md
$ echo "bad update" > README.md
$ git commit -am "bad update"
[master a1b9870] bad update
1 file changed, 1 insertion(+), 1 deletion(-)
In this example the commit history has two commits and the last one is a mistake. Using git revert:
$ git revert HEAD
[master 1db4eeb] Revert "bad update"
1 file changed, 1 insertion(+), 1 deletion(-)
There will be 3 commits in the log:
$ git log --oneline
1db4eeb Revert "bad update"
a1b9870 bad update
3f7522e initial commit
So there is a consistent history of what has happened, yet the files are as if the bad update never occured:
cat README.md
Initial text
It doesn't matter where in the history the commit to be reverted is (in the above example, the last commit is reverted - any commit can be reverted).
do you have to do something else after?
A git revert
is just another commit, so e.g. push to the remote so that other users can pull/fetch/merge the changes and you're done.
Do you have to commit the changes revert made or does revert directly commit to the repo?
git revert
is a commit - there are no extra steps assuming reverting a single commit is what you wanted to do.
Obviously you'll need to push again and probably announce to the team.
Indeed - if the remote is in an unstable state - communicating to the rest of the team that they need to pull to get the fix (the reverting commit) would be the right thing to do :).
Here are several benefits of IHttpActionResult
over HttpResponseMessage
mentioned in Microsoft ASP.Net Documentation:
- Simplifies unit testing your controllers.
- Moves common logic for creating HTTP responses into separate classes.
- Makes the intent of the controller action clearer, by hiding the low-level details of constructing the response.
But here are some other advantages of using IHttpActionResult
worth mentioning:
Ok
NotFound
Exception
Unauthorized
BadRequest
Conflict
Redirect
InvalidModelState
(link to full list)ExecuteAsync
method.ResponseMessageResult ResponseMessage(HttpResponseMessage response)
to convert HttpResponseMessage to IHttpActionResult.Maybe help, if you want to add some filter:
context.Persons
.Where(c => c.state == myState)
.Select(c => c.age)
.DefaultIfEmpty(0)
.Max();
You might like the function GetInfoFromClosedFile()
Edit: Since the above link does not seem to work anymore, I am adding alternate link 1 and alternate link 2 + code:
Private Function GetInfoFromClosedFile(ByVal wbPath As String, _
wbName As String, wsName As String, cellRef As String) As Variant
Dim arg As String
GetInfoFromClosedFile = ""
If Right(wbPath, 1) <> "" Then wbPath = wbPath & ""
If Dir(wbPath & "" & wbName) = "" Then Exit Function
arg = "'" & wbPath & "[" & wbName & "]" & _
wsName & "'!" & Range(cellRef).Address(True, True, xlR1C1)
On Error Resume Next
GetInfoFromClosedFile = ExecuteExcel4Macro(arg)
End Function
Take a look at Google Play Location Samples
Location Updates using a Foreground Service: Get updates about a device's location using a bound and started foreground service.
Location Updates using a PendingIntent: Get updates about a device's location using a PendingIntent
. Sample shows implementation using an IntentService
as well as a BroadcastReceiver
.
My solution is very simple, looks exactly like a native editable combobox and yet works even in IE6 (some answers here require a lot of code or external libraries and the result is so so, e.g. the text in the textbox goes behind the dropdown icon of the combobox' part or it doesn't look like an editable combobox at all).
The point is to clip the combobox only the dropdown icon to be visible above the textbox. And the textbox is wide a bit underneath the combobox' part, so you don't see its right end - visually continues with the combobox: https://jsfiddle.net/dLsx0c5y/2/
select#programmoduleselect
{
clip: rect(auto auto auto 331px);
width: 351px;
height: 23px;
z-index: 101;
position: absolute;
}
input#programmodule
{
width: 328px;
height: 17px;
}
<table><tr>
<th>Programm / Modul:</th>
<td>
<select id="programmoduleselect"
onchange="var textbox = document.getElementById('programmodule'); textbox.value = (this.selectedIndex == -1 ? '' : this.options[this.selectedIndex].value); textbox.select(); fireEvent2(textbox, 'change');"
onclick="this.selectedIndex = -1;">
<option value=RFEM>RFEM</option>
<option value=RSTAB>RSTAB</option>
<option value=STAHL>STAHL</option>
<option value=BETON>BETON</option>
<option value=BGDK>BGDK</option>
</select>
<input name="programmodule" id="programmodule" value="" autocomplete="off"
onkeypress="if (event.keyCode == 13) return false;" />
</td>
</tr></table>
(Used originally e.g. here, but don't send the form: old.dlubal.com/WishedFeatures.aspx )
EDIT: The styles need to be a bit different for macOS: Ch is ok, for FF increase the combobox' height, Safari and Opera ignore the combobox' height so increase their font size (has an upper limit, so then decrease the textbox' height a bit): https://i.stack.imgur.com/efQ9i.png