You can use If Random
. For example, this generates a random number between 75 to 100.
final int random = new Random().nextInt(26) + 75;
You can do:
def mul_table(n,i=1):
print(n*i)
if i !=10:
mul_table(n,i+1)
mul_table(7)
And here is a quick benchmark for both #sample
and #rand
:
irb(main):014:0* Benchmark.bm do |x|
irb(main):015:1* x.report('sample') { 1_000_000.times { (1..100).to_a.sample } }
irb(main):016:1> x.report('rand') { 1_000_000.times { rand(1..100) } }
irb(main):017:1> end
user system total real
sample 3.870000 0.020000 3.890000 ( 3.888147)
rand 0.150000 0.000000 0.150000 ( 0.153557)
So, doing rand(a..b)
is the right thing
You could do it using in_array()
combined with range()
if (in_array($value, range($min, $max))) {
// Value is in range
}
Note As has been pointed out in the comments however, this is not exactly a great solution if you are focussed on performance. Generating an array (escpecially with larger ranges) will slow down the execution.
The length of an array is available as
int l = array.length;
The size of a List
is availabe as
int s = list.size();
xrange()
is more efficient because instead of generating a list of objects, it just generates one object at a time. Instead of 100 integers, and all of their overhead, and the list to put them in, you just have one integer at a time. Faster generation, better memory use, more efficient code.
Unless I specifically need a list for something, I always favor xrange()
To check whether some number n is in the inclusive range denoted by the two number a and b you do either
if a <= n <= b:
print "yes"
else:
print "no"
use the replace >=
and <=
with >
and <
to check whether n
is in the exclusive range denoted by a
and b
(i.e. a
and b
are not themselves members of the range).
Range will produce an arithmetic progression defined by the two (or three) arguments converted to integers. See the documentation. This is not what you want I guess.
use
=VLOOKUP(D4,F4:G9,2)
with the range F4:G9:
0 0.1
1 0.15
5 0.2
15 0.3
30 1
100 1.3
and D4
being the value in question, e.g. 18.75
-> result: 0.3
Is there a range() equivalent for floats in Python? NO Use this:
def f_range(start, end, step):
a = range(int(start/0.01), int(end/0.01), int(step/0.01))
var = []
for item in a:
var.append(item*0.01)
return var
range(x,y)
returns a list of each number in between x and y if you use a for
loop, then range
is slower. In fact, range
has a bigger Index range. range(x.y)
will print out a list of all the numbers in between x and y
xrange(x,y)
returns xrange(x,y)
but if you used a for
loop, then xrange
is faster. xrange
has a smaller Index range. xrange
will not only print out xrange(x,y)
but it will still keep all the numbers that are in it.
[In] range(1,10)
[Out] [1, 2, 3, 4, 5, 6, 7, 8, 9]
[In] xrange(1,10)
[Out] xrange(1,10)
If you use a for
loop, then it would work
[In] for i in range(1,10):
print i
[Out] 1
2
3
4
5
6
7
8
9
[In] for i in xrange(1,10):
print i
[Out] 1
2
3
4
5
6
7
8
9
There isn't much difference when using loops, though there is a difference when just printing it!
NSString *string = @"hello bla bla";
if ([string rangeOfString:@"bla"].location == NSNotFound) {
NSLog(@"string does not contain bla");
} else {
NSLog(@"string contains bla!");
}
The key is noticing that rangeOfString:
returns an NSRange
struct, and the documentation says that it returns the struct {NSNotFound, 0}
if the "haystack" does not contain the "needle".
And if you're on iOS 8 or OS X Yosemite, you can now do: (*NOTE: This WILL crash your app if this code is called on an iOS7 device).
NSString *string = @"hello bla blah";
if ([string containsString:@"bla"]) {
NSLog(@"string contains bla!");
} else {
NSLog(@"string does not contain bla");
}
(This is also how it would work in Swift)
lastrow = Sheet1.Range("A#").End(xlDown).Row
This is more easy to determine the row count.
Make sure you declare the right variable when it comes to larger rows.
By the way the '#' sign must be a number where you want to start the row count.
f = 0.5
a = 0
b = 9
d = [x * f for x in range(a, b)]
would be a way to do it.
This is what I would use:
numbers = [float(x)/10 for x in range(10)]
rather than:
numbers = [x*0.1 for x in range(10)]
that would return :
[0.0, 0.1, 0.2, 0.30000000000000004, 0.4, 0.5, 0.6000000000000001, 0.7000000000000001, 0.8, 0.9]
hope it helps.
This just a slight addition to @TomM's
answer/ A simple function to check
if your Selection's cells are empty
Public Function CheckIfSelectionIsEmpty() As Boolean
Dim emptySelection As Boolean:emptySelection=True
Dim cell As Range
For Each cell In Selection
emptySelection = emptySelection And isEmpty(cell)
If emptySelection = False Then
Exit For
End If
Next
CheckIfSelectionIsEmpty = emptySelection
End Function
Using axes objects is a great approach for this. It helps if you want to interact with multiple figures and sub-plots. To add and manipulate the axes objects directly:
import matplotlib.pyplot as plt
fig = plt.figure(figsize=(12,9))
signal_axes = fig.add_subplot(211)
signal_axes.plot(xs,rawsignal)
fft_axes = fig.add_subplot(212)
fft_axes.set_title("FFT")
fft_axes.set_autoscaley_on(False)
fft_axes.set_ylim([0,1000])
fft = scipy.fft(rawsignal)
fft_axes.plot(abs(fft))
plt.show()
To reverse a string without using reversed
or [::-1]
, try something like:
def reverse(text):
# Container for reversed string
txet=""
# store the length of the string to be reversed
# account for indexes starting at 0
length = len(text)-1
# loop through the string in reverse and append each character
# deprecate the length index
while length>=0:
txet += "%s"%text[length]
length-=1
return txet
what you could do, is put an if statement around everything inside the loop that you want kept away from the 50. e.g.
for i in range(0, len(list)):
if i != 50:
x= listRow(list, i)
for j in range (#0 to len(list) not including x#)
That's because arc4random_uniform() is defined as follows:
func arc4random_uniform(_: UInt32) -> UInt32
It takes a UInt32 as input, and spits out a UInt32. You're attempting to pass it a range of values. arc4random_uniform gives you a random number in between 0 and and the number you pass it (exclusively), so if for example, you wanted to find a random number between -50 and 50, as in [-50, 50]
you could use arc4random_uniform(101) - 50
Private Sub CommandButton1_Click()
Dim Data As Object, Employee As Object
Application.ScreenUpdating = False
Set Data = ThisWorkbook.Sheets("Data")
Set Employee = ThisWorkbook.Sheets("Employee Names")
Data.Range("AK1").Value = "Lookup"
Data.Range("AK2:AK" & Data.Range("A1").End(xlDown).Row).Formula = "=VLOOKUP(E2,'Employee Names'!$A:$A,1,0)"
Data.Range("AK2:AK" & Data.Range("A1").End(xlDown).Row).Value = Data.Range("AK2:AK" & Data.Range("A1").End(xlDown).Row).Value
Data.Range("A1:AK" & Data.Range("A1").End(xlDown).Row).AutoFilter Field:=5, Criteria1:="<>"
Data.Range("A1:AK" & Data.Range("A1").End(xlDown).Row).AutoFilter Field:=37, Criteria1:="#N/A"
Application.DisplayAlerts = False
Data.AutoFilter.Range.Offset(1, 0).Rows.SpecialCells(xlCellTypeVisible).Delete (xlShiftUp)
Data.Range("AK:AK").Delete
Data.AutoFilterMode = False
'Selection.AutoFilter
Data.Range("A1:AK" & Data.Range("A1").End(xlDown).Row).AutoFilter Field:=7, Criteria1:="="
Data.Range("A1:AK" & Data.Range("A1").End(xlDown).Row).AutoFilter Field:=12, Criteria1:="<>"
Worksheets("Data").Range("A1:AK" & Data.Range("A1").End(xlDown).Row).Copy
Sheets.Add(After:=Sheets(Sheets.Count)).Name = "DrfeeRequested"
Set Dr = ThisWorkbook.Worksheets("DrfeeRequested")
Dr.Range("A1").PasteSpecial Paste:=xlPasteValues
Application.CutCopyMode = False
Data.AutoFilterMode = False
'DrfeeRequested.AutoFilterMode = False
Selection.AutoFilter
Data.Range("A1:AK" & Data.Range("A1").End(xlDown).Row).AutoFilter Field:=13, Criteria1:="<>"
Data.Range("A1:AK" & Data.Range("A1").End(xlDown).Row).Copy
Sheets.Add(After:=Sheets(Sheets.Count)).Name = "RateLockfollowup"
Set Ratefolup = ThisWorkbook.Worksheets("RateLockfollowup")
Ratefolup.Range("A1").PasteSpecial Paste:=xlPasteValues
Application.CutCopyMode = False
Data.AutoFilterMode = False
Selection.AutoFilter
Data.Range("A1:AK" & Data.Range("A1").End(xlDown).Row).AutoFilter Field:=19, Criteria1:="="
Data.Range("A1:AK" & Data.Range("A1").End(xlDown).Row).AutoFilter Field:=13, Criteria1:="<>"
Data.Range("A1:AK" & Data.Range("A1").End(xlDown).Row).Copy
Sheets.Add(After:=Sheets(Sheets.Count)).Name = "Lockedlefollowup"
Set Lockfolup = ThisWorkbook.Worksheets("Lockedlefollowup")
Lockfolup.Range("A1").PasteSpecial Paste:=xlPasteValues
Application.CutCopyMode = False
Data.AutoFilterMode = False
Selection.AutoFilter
Data.Range("A1:AK" & Data.Range("A1").End(xlDown).Row).AutoFilter Field:=19, Criteria1:="="
Data.Range("A1:AK" & Data.Range("A1").End(xlDown).Row).Copy
Sheets.Add(After:=Sheets(Sheets.Count)).Name = "Hoifollowup"
Set Hoifolup = ThisWorkbook.Worksheets("Hoifollowup")
Hoifolup.Range("A1").PasteSpecial Paste:=xlPasteValues
Application.CutCopyMode = False
Data.AutoFilterMode = False
Selection.AutoFilter
TodayDT = Format(Now())
Weekdy = Weekday(Now())
If Weekdy = 2 Then
LastTwoDays = Now() - Weekday(Now(), 3)
ElseIf Weekdy = 3 Then
LastTwoDays = Now() - Weekday(Now(), 3)
ElseIf Weekdy = 4 Then
LastTwoDays = Now() - Weekday(Now(), 3)
ElseIf Weekdy = 5 Then
LastTwoDays = Now() - Weekday(Now(), 3)
ElseIf Weekdy = 6 Then
LastTwoDays = Now() - Weekday(Now(), 3)
Else
MsgBox "Today Satuarday OR Sunday Data is not Available"
End If
Data.Range("A1:AK" & Data.Range("A1").End(xlDown).Row).AutoFilter Field:=12, Criteria1:="="
Data.Range("A1:AK" & Data.Range("A1").End(xlDown).Row).AutoFilter Field:=11, Criteria1:="<>"
Data.Range("A1:AK" & Data.Range("A1").End(xlDown).Row).AutoFilter Field:=11, Criteria1:=" TodayDT", Operator:=xlAnd, Criteria2:="LastTwoDays"
Data.Range("A1:AK" & Data.Range("A1").End(xlDown).Row).Copy
Sheets.Add(After:=Sheets(Sheets.Count)).Name = "DRfeefollowup"
Set Drfreefolup = ThisWorkbook.Worksheets("DRfeefollowup")
Drfreefolup.Range("A1").PasteSpecial Paste:=xlPasteValues
Application.CutCopyMode = False
Data.AutoFilterMode = False
Data.Range("A1:AK" & Data.Range("A1").End(xlDown).Row).AutoFilter Field:=15, Criteria1:="yes"
Data.Range("A1:AK" & Data.Range("A1").End(xlDown).Row).AutoFilter Field:=19, Criteria1:="x"
Data.Range("A1:AK" & Data.Range("A1").End(xlDown).Row).AutoFilter Field:=12, Criteria1:="<>"
Data.Range("A1:AK" & Data.Range("A1").End(xlDown).Row).AutoFilter Field:=13, Criteria1:="<>"
'Data.Range("A1:AK" & Data.Range("A1").End(xlDown).Row).AutoFilter Field:=14, criterial:="<>"
Data.Range("A1:AK" & Data.Range("A1").End(xlDown).Row).Copy
Sheets.Add(After:=Sheets(Sheets.Count)).Name = "Drworkblefiles"
Set Drworkblefiles = ThisWorkbook.Worksheets("Drworkblefiles")
Drworkblefiles.Range("A1").PasteSpecial Paste:=xlPasteValues
Application.CutCopyMode = False
Data.Range("A1").AutoFilter
End Sub
Private Sub CommandButton2_Click()
Sheets("Data").Range("A1:AJ" & Sheets("Data").Range("A1").End(xlDown).Row).Clear
MsgBox "Please paste new data in data sheet"
End Sub
Suprised no-one has yet mentioned the recommended solution in the Python 3 docs:
See also:
- The linspace recipe shows how to implement a lazy version of range that suitable for floating point applications.
Once defined, the recipe is easy to use and does not require numpy
or any other external libraries, but functions like numpy.linspace()
. Note that rather than a step
argument, the third num
argument specifies the number of desired values, for example:
print(linspace(0, 10, 5))
# linspace(0, 10, 5)
print(list(linspace(0, 10, 5)))
# [0.0, 2.5, 5.0, 7.5, 10]
I quote a modified version of the full Python 3 recipe from Andrew Barnert below:
import collections.abc
import numbers
class linspace(collections.abc.Sequence):
"""linspace(start, stop, num) -> linspace object
Return a virtual sequence of num numbers from start to stop (inclusive).
If you need a half-open range, use linspace(start, stop, num+1)[:-1].
"""
def __init__(self, start, stop, num):
if not isinstance(num, numbers.Integral) or num <= 1:
raise ValueError('num must be an integer > 1')
self.start, self.stop, self.num = start, stop, num
self.step = (stop-start)/(num-1)
def __len__(self):
return self.num
def __getitem__(self, i):
if isinstance(i, slice):
return [self[x] for x in range(*i.indices(len(self)))]
if i < 0:
i = self.num + i
if i >= self.num:
raise IndexError('linspace object index out of range')
if i == self.num-1:
return self.stop
return self.start + i*self.step
def __repr__(self):
return '{}({}, {}, {})'.format(type(self).__name__,
self.start, self.stop, self.num)
def __eq__(self, other):
if not isinstance(other, linspace):
return False
return ((self.start, self.stop, self.num) ==
(other.start, other.stop, other.num))
def __ne__(self, other):
return not self==other
def __hash__(self):
return hash((type(self), self.start, self.stop, self.num))
The Python 3 range()
object doesn't produce numbers immediately; it is a smart sequence object that produces numbers on demand. All it contains is your start, stop and step values, then as you iterate over the object the next integer is calculated each iteration.
The object also implements the object.__contains__
hook, and calculates if your number is part of its range. Calculating is a (near) constant time operation *. There is never a need to scan through all possible integers in the range.
From the range()
object documentation:
The advantage of the
range
type over a regularlist
ortuple
is that a range object will always take the same (small) amount of memory, no matter the size of the range it represents (as it only stores thestart
,stop
andstep
values, calculating individual items and subranges as needed).
So at a minimum, your range()
object would do:
class my_range:
def __init__(self, start, stop=None, step=1, /):
if stop is None:
start, stop = 0, start
self.start, self.stop, self.step = start, stop, step
if step < 0:
lo, hi, step = stop, start, -step
else:
lo, hi = start, stop
self.length = 0 if lo > hi else ((hi - lo - 1) // step) + 1
def __iter__(self):
current = self.start
if self.step < 0:
while current > self.stop:
yield current
current += self.step
else:
while current < self.stop:
yield current
current += self.step
def __len__(self):
return self.length
def __getitem__(self, i):
if i < 0:
i += self.length
if 0 <= i < self.length:
return self.start + i * self.step
raise IndexError('my_range object index out of range')
def __contains__(self, num):
if self.step < 0:
if not (self.stop < num <= self.start):
return False
else:
if not (self.start <= num < self.stop):
return False
return (num - self.start) % self.step == 0
This is still missing several things that a real range()
supports (such as the .index()
or .count()
methods, hashing, equality testing, or slicing), but should give you an idea.
I also simplified the __contains__
implementation to only focus on integer tests; if you give a real range()
object a non-integer value (including subclasses of int
), a slow scan is initiated to see if there is a match, just as if you use a containment test against a list of all the contained values. This was done to continue to support other numeric types that just happen to support equality testing with integers but are not expected to support integer arithmetic as well. See the original Python issue that implemented the containment test.
* Near constant time because Python integers are unbounded and so math operations also grow in time as N grows, making this a O(log N) operation. Since it’s all executed in optimised C code and Python stores integer values in 30-bit chunks, you’d run out of memory before you saw any performance impact due to the size of the integers involved here.
sub selectVar ()
dim x,y as integer
let srange = "A" & x & ":" & "m" & y
range(srange).select
end sub
I think this is the simplest way.
Posting this late just for others..I bet the first coder is done by now. For simple datatypes no copy is needed, just revert to good old C code methods.
std::vector <int> myVec;
int *p;
// Add some data here and set start, then
p=myVec.data()+start;
Then pass the pointer p and a len to anything needing a subvector.
notelen must be!! len < myVec.size()-start
Readibility aside, reversed(range(n))
seems to be faster than range(n)[::-1]
.
$ python -m timeit "reversed(range(1000000000))"
1000000 loops, best of 3: 0.598 usec per loop
$ python -m timeit "range(1000000000)[::-1]"
1000000 loops, best of 3: 0.945 usec per loop
Just if anyone was wondering :)
In fact, this is a retro-gradation of Python3 as compared to Python2. Certainly, Python2 which uses range() and xrange() is more convenient than Python3 which uses list(range()) and range() respectively. The reason is because the original designer of Python3 is not very experienced, they only considered the use of the range function by many beginners to iterate over a large number of elements where it is both memory and CPU inefficient; but they neglected the use of the range function to produce a number list. Now, it is too late for them to change back already.
If I was to be the designer of Python3, I will:
That should be optimal.
#!/bin/bash
for i in $(seq 1 2 10)
do
echo "skip by 2 value $i"
done
If you just want to select the used range, use
ActiveSheet.UsedRange.Select
If you want to select from A1 to the end of the used range, you can use the SpecialCells method like this
With ActiveSheet
.Range(.Cells(1, 1), .Cells.SpecialCells(xlCellTypeLastCell)).Select
End With
Sometimes Excel gets confused on what is the last cell. It's never a smaller range than the actual used range, but it can be bigger if some cells were deleted. To avoid that, you can use Find and the asterisk wildcard to find the real last cell.
Dim rLastCell As Range
With Sheet1
Set rLastCell = .Cells.Find("*", .Cells(1, 1), xlValues, xlPart, , xlPrevious)
.Range(.Cells(1, 1), rLastCell).Select
End With
Finally, make sure you're only selecting if you really need to. Most of what you need to do in Excel VBA you can do directly to the Range rather than selecting it first. Instead of
.Range(.Cells(1, 1), rLastCell).Select
Selection.Font.Bold = True
You can
.Range(.Cells(1,1), rLastCells).Font.Bold = True
The overall dimensions of a range are in its Width
and Height
properties.
Dim r As Range
Set r = ActiveSheet.Range("A4:H12")
Debug.Print r.Width
Debug.Print r.Height
Replace
Python 2 xrange
to
Python 3 range
Rest all same.
Here's how I understand it:
x
lie in a rangeLet's assume you have a range from 0
to 100
. Given an arbitrary number from that range, what "percent" from that range does it lie in? This should be pretty simple, 0
would be 0%
, 50
would be 50%
and 100
would be 100%
.
Now, what if your range was 20
to 100
? We cannot apply the same logic as above (divide by 100) because:
20 / 100
doesn't give us 0
(20
should be 0%
now). This should be simple to fix, we just need to make the numerator 0
for the case of 20
. We can do that by subtracting:
(20 - 20) / 100
However, this doesn't work for 100
anymore because:
(100 - 20) / 100
doesn't give us 100%
. Again, we can fix this by subtracting from the denominator as well:
(100 - 20) / (100 - 20)
A more generalized equation for finding out what % x
lies in a range would be:
(x - MIN) / (MAX - MIN)
Now that we know what percent a number lies in a range, we can apply it to map the number to another range. Let's go through an example.
old range = [200, 1000]
new range = [10, 20]
If we have a number in the old range, what would the number be in the new range? Let's say the number is 400
. First, figure out what percent 400
is within the old range. We can apply our equation above.
(400 - 200) / (1000 - 200) = 0.25
So, 400
lies in 25%
of the old range. We just need to figure out what number is 25%
of the new range. Think about what 50%
of [0, 20]
is. It would be 10
right? How did you arrive at that answer? Well, we can just do:
20 * 0.5 = 10
But, what about from [10, 20]
? We need to shift everything by 10
now. eg:
((20 - 10) * 0.5) + 10
a more generalized formula would be:
((MAX - MIN) * PERCENT) + MIN
To the original example of what 25%
of [10, 20]
is:
((20 - 10) * 0.25) + 10 = 12.5
So, 400
in the range [200, 1000]
would map to 12.5
in the range [10, 20]
To map x
from old range to new range:
OLD PERCENT = (x - OLD MIN) / (OLD MAX - OLD MIN)
NEW X = ((NEW MAX - NEW MIN) * OLD PERCENT) + NEW MIN
Here is a query to find all product sales that were running during the month of August
Also adds a case statement to validate the query
SELECT start_date,
end_date,
CASE
WHEN start_date <= '2015-08-31' THEN 'true'
ELSE 'false'
END AS started_before_end_of_month,
CASE
WHEN NOT end_date <= '2015-08-01' THEN 'true'
ELSE 'false'
END AS did_not_end_before_begining_of_month
FROM product_sales
WHERE start_date <= '2015-08-31'
AND end_date >= '2015-08-01'
ORDER BY start_date;
Of course you can use floats or doubles for "critical" things ... Many applications do nothing but crunch numbers using these datatypes.
You might have misunderstood some of the various caveats regarding floating-point numbers, such as the recommendation to never compare for exact equality, and so on.
Here's something that I just wrote along those lines::
#include <random>
#include <chrono>
#include <thread>
using namespace std;
//==============================================================
// RANDOM BACKOFF TIME
//==============================================================
class backoff_time_t {
public:
random_device rd;
mt19937 mt;
uniform_real_distribution<double> dist;
backoff_time_t() : rd{}, mt{rd()}, dist{0.5, 1.5} {}
double rand() {
return dist(mt);
}
};
thread_local backoff_time_t backoff_time;
int main(int argc, char** argv) {
double x1 = backoff_time.rand();
double x2 = backoff_time.rand();
double x3 = backoff_time.rand();
double x4 = backoff_time.rand();
return 0;
}
~
Old post but this is exactly what I needed, simple question, how to change it to count column rather than Row. Thankyou in advance. Novice to Excel.
=SUM(A1:INDIRECT(CONCATENATE("A",C5)))
I.e My data is A1 B1 C1 D1 etc rather then A1 A2 A3 A4.
If you're using multiple slides, and you can use jQuery, you can do the follow to deal with multiple sliders easily:
function updateRangeInput(elem) {_x000D_
$(elem).next().val($(elem).val());_x000D_
}
_x000D_
input { padding: 8px; border: 1px solid #ddd; color: #555; display: block; }_x000D_
input[type=text] { width: 100px; }_x000D_
input[type=range] { width: 400px; }
_x000D_
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>_x000D_
_x000D_
<input type="range" min="0" max="100" oninput="updateRangeInput(this)" value="0">_x000D_
<input type="text" value="0">_x000D_
_x000D_
<input type="range" min="0" max="100" oninput="updateRangeInput(this)" value="50">_x000D_
<input type="text" value="50">
_x000D_
Also, by using oninput
on the <input type='range'>
you'll receive events while dragging the range.
It works well in combination with zero-based indexing and len()
. For example, if you have 10 items in a list x
, they are numbered 0-9. range(len(x))
gives you 0-9.
Of course, people will tell you it's more Pythonic to do for item in x
or for index, item in enumerate(x)
rather than for i in range(len(x))
.
Slicing works that way too: foo[1:4]
is items 1-3 of foo
(keeping in mind that item 1 is actually the second item due to the zero-based indexing). For consistency, they should both work the same way.
I think of it as: "the first number you want, followed by the first number you don't want." If you want 1-10, the first number you don't want is 11, so it's range(1, 11)
.
If it becomes cumbersome in a particular application, it's easy enough to write a little helper function that adds 1 to the ending index and calls range()
.
Here is your code. I'm assuming you're using python 3 based on the your use of print()
and input()
:
import random
def main():
#random.seed() --> don't need random.seed()
#Prompts the user to enter the number of tickets they wish to play.
#python 3 version:
tickets = int(input("How many lottery tickets do you want?\n"))
#Creates the dictionaries "winning_numbers" and "guess." Also creates the variable "winnings" for total amount of money won.
winning_numbers = []
winnings = 0
#Generates the winning lotto numbers.
for i in range(tickets * 5):
#del winning_numbers[:] what is this line for?
randNum = random.randint(1,30)
while randNum in winning_numbers:
randNum = random.randint(1,30)
winning_numbers.append(randNum)
print(winning_numbers)
guess = getguess(tickets)
nummatches = checkmatch(winning_numbers, guess)
print("Ticket #"+str(i+1)+": The winning combination was",winning_numbers,".You matched",nummatches,"number(s).\n")
winningRanks = [0, 0, 10, 500, 20000, 1000000]
winnings = sum(winningRanks[:nummatches + 1])
print("You won a total of",winnings,"with",tickets,"tickets.\n")
#Gets the guess from the user.
def getguess(tickets):
guess = []
for i in range(tickets):
bubble = [int(i) for i in input("What numbers do you want to choose for ticket #"+str(i+1)+"?\n").split()]
guess.extend(bubble)
print(bubble)
return guess
#Checks the user's guesses with the winning numbers.
def checkmatch(winning_numbers, guess):
match = 0
for i in range(5):
if guess[i] == winning_numbers[i]:
match += 1
return match
main()
You may be looking for
for _ in itertools.repeat(None, times): ...
this is THE fastest way to iterate times
times in Python.
I'm really frustrated at Swift's String access model: everything has to be an Index
. All I want is to access the i-th character of the string using Int
, not the clumsy index and advancing (which happens to change with every major release). So I made an extension to String
:
extension String {
func index(from: Int) -> Index {
return self.index(startIndex, offsetBy: from)
}
func substring(from: Int) -> String {
let fromIndex = index(from: from)
return String(self[fromIndex...])
}
func substring(to: Int) -> String {
let toIndex = index(from: to)
return String(self[..<toIndex])
}
func substring(with r: Range<Int>) -> String {
let startIndex = index(from: r.lowerBound)
let endIndex = index(from: r.upperBound)
return String(self[startIndex..<endIndex])
}
}
let str = "Hello, playground"
print(str.substring(from: 7)) // playground
print(str.substring(to: 5)) // Hello
print(str.substring(with: 7..<11)) // play
Using ruby 2.4 you can do the same thing using transform_values
, this feature extracted from rails to ruby.
h = {a: 1, b: 2, c: 3}
h.transform_values { |v| v * 10 }
#=> {a: 10, b: 20, c: 30}
I would try
Sheets("Sheet1").Activate
Set Ticker = Range(Cells(2, 1), Cells(65, 1))
Ticker.Copy
Worksheets("Sheet2").Range("A1").Offset(0,0).Cells.Select
Worksheets("Sheet2").paste
Sorry, but in order to iterate over anything in any language, Python and English included, an index must be stored. Be it in a variable or not. Finding a way to obscure the fact that python is internally tracking the for loop won't change the fact that it is. I'd recommend just leaving it as is.
$ranges = [
1 => [
'min_range' => 0.01,
'max_range' => 199.99
],
2 => [
'min_range' => 200.00,
],
];
foreach( $ranges as $value => $range ){
if( filter_var( $cartTotal, FILTER_VALIDATE_FLOAT, [ 'options' => $range ] ) ){
return $value;
}
}
I find it surprising that, even in Swift 4, there's still no simple native way to express a String range using Int. The only String methods that let you supply an Int as a way of obtaining a substring by range are prefix
and suffix
.
It is useful to have on hand some conversion utilities, so that we can talk like NSRange when speaking to a String. Here's a utility that takes a location and length, just like NSRange, and returns a Range<String.Index>
:
func range(_ start:Int, _ length:Int) -> Range<String.Index> {
let i = self.index(start >= 0 ? self.startIndex : self.endIndex,
offsetBy: start)
let j = self.index(i, offsetBy: length)
return i..<j
}
For example, "hello".range(0,1)"
is the Range<String.Index>
embracing the first character of "hello"
. As a bonus, I've allowed negative locations: "hello".range(-1,1)"
is the Range<String.Index>
embracing the last character of "hello"
.
It is useful also to convert a Range<String.Index>
to an NSRange, for those moments when you have to talk to Cocoa (for example, in dealing with NSAttributedString attribute ranges). Swift 4 provides a native way to do that:
let nsrange = NSRange(range, in:s) // where s is the string
We can thus write another utility where we go directly from a String location and length to an NSRange:
extension String {
func nsRange(_ start:Int, _ length:Int) -> NSRange {
return NSRange(self.range(start,length), in:self)
}
}
If you have Excel 2007 or later use COUNTIFS
with an "S" on the end, i.e.
=COUNTIFS(B2:B292,">10",B2:B292,"<10000")
You may need to change commas , to semi-colons ;
In earlier versions of excel use SUMPRODUCT
like this
=SUMPRODUCT((B2:B292>10)*(B2:B292<10000))
Note: if you want to include exactly 10 change > to >= - similarly with 10000, change < to <=
I have an use case I don't believe any of your examples cover.
boxes = [b1, b2, b3]
items = [i1, i2, i3, i4, i5]
for j in range(len(boxes)):
boxes[j].putitemin(items[j])
I'm relatively new to python though so happy to learn a more elegant approach.
The methods above work great. If you're using apache commons (org.apache.commons.math.random) check out RandomData. It has a method: nextLong(long lower, long upper)
In addition to solutions proposed, and in case you have a 1D range to 1D array, i prefer to process it through a function like below. The reason is simple: If for any reason your range is reduced to 1 element range, as far as i know the command Range().Value will not return a variant array but just a variant and you will not be able to assign a variant variable to a variant array (previously declared).
I had to convert a variable size range to a double array, and when the range was of 1 cell size, i was not able to use a construct like range().value so i proceed with a function like below.
Public Function Rng2Array(inputRange As Range) As Double()
Dim out() As Double
ReDim out(inputRange.Columns.Count - 1)
Dim cell As Range
Dim i As Long
For i = 0 To inputRange.Columns.Count - 1
out(i) = inputRange(1, i + 1) 'loop over a range "row"
Next
Rng2Array = out
End Function
If you were dealing with, given two ranges [x1:x2]
and [y1:y2]
, natural / anti-natural order ranges at the same time where:
x1 <= x2 && y1 <= y2
or x1 >= x2 && y1 >= y2
then you may want to use this to check:
they are overlapped <=> (y2 - x1) * (x2 - y1) >= 0
where only four operations are involved:
My solution was replacing the MSCOMCTL.OCX on windows 10 box with one from a Windows 7 box that also had MS Access installed. For some reason, there are different MSCOMCTL.OCX 2.0 controls with the same name.
I know this sounds crazy, and might not help anyone else, but we have saved this MSCOMCTL.OCX with a readme file and it has fixed our new install errors every time.
we unregister the current MSCOMCTL.OCX that came with Windows 10 box, delete it, and register the old one we have saved.
Storing money as BIGINT
multiplied by 100 or more with the reason to use less storage space makes no sense in all "normal" situations.
DECIMAL(13,4)
DECIMAL
.
DECIMAL(13,4)
represents 9 digits + 4 fraction digits (decimal places) => 4 + 2 bytes = 6 bytesBIGINT
.Same solution, but just to remind you: You can define the shadow directly in the storyboard.
Ex:
Without VBA macro, you can use this tips to get the username from the path :
=MID(INFO("DIRECTORY"),10,LEN(INFO("DIRECTORY"))-LEN(MID(INFO("DIRECTORY"),FIND("\",INFO("DIRECTORY"),10),1000))-LEN("C:\Users\"))
If you changed the location, using option 'Use custom location (does not modify Tomcat installation)' and the deployed directory is "wtpwebapps" then you'll have to:
<role rolename="manager-gui"/> <role rolename="manager-status"/> <role rolename="manager-jmx"/> <role rolename="manager-script"/> <role rolename="admin-gui"/> <role rolename="admin"/> <user username="admin" password="yourpassword" roles="admin, admin-gui, manager-gui"/>
readonly="true"into the <Resource/> key of the <GlobalNamingResources/> group.
NOTE: if you change the server configuration, say if you like to compare the default configuration (use tomcat installation directory) and the 'new directory', when switching back to the 'new directory' this 'tomcat-users.xml' will be overwritten by the default file, so SAVE THE CONTENT OF THIS FILE somewhere before doing that, then copy it back. If you only give the the username "admin" role, you will be prompted of help messages. It says: you should not grant the admin-gui, or manager-gui role the 'manager-jmx' and 'manager-script' roles.
Something like next:
>>> myList = [1, 2, 3, 100, 5]
>>> [i[0] for i in sorted(enumerate(myList), key=lambda x:x[1])]
[0, 1, 2, 4, 3]
enumerate(myList)
gives you a list containing tuples of (index, value):
[(0, 1), (1, 2), (2, 3), (3, 100), (4, 5)]
You sort the list by passing it to sorted
and specifying a function to extract the sort key (the second element of each tuple; that's what the lambda
is for. Finally, the original index of each sorted element is extracted using the [i[0] for i in ...]
list comprehension.
std::map<Key, Value>
? SortedDictionary<TKey, TValue>
std::unordered_map<Key, Value>
? Dictionary<TKey, TValue>
Brynner Ferreira, has brought a good point: storing a sibling key where expiration info resides. This way, if you have a large amount of keys, or if your values are large Json objects, you don't need to parse them to access the timestamp.
here follows an improved version:
/* removeStorage: removes a key from localStorage and its sibling expiracy key
params:
key <string> : localStorage key to remove
returns:
<boolean> : telling if operation succeeded
*/
function removeStorage(name) {
try {
localStorage.removeItem(name);
localStorage.removeItem(name + '_expiresIn');
} catch(e) {
console.log('removeStorage: Error removing key ['+ key + '] from localStorage: ' + JSON.stringify(e) );
return false;
}
return true;
}
/* getStorage: retrieves a key from localStorage previously set with setStorage().
params:
key <string> : localStorage key
returns:
<string> : value of localStorage key
null : in case of expired key or failure
*/
function getStorage(key) {
var now = Date.now(); //epoch time, lets deal only with integer
// set expiration for storage
var expiresIn = localStorage.getItem(key+'_expiresIn');
if (expiresIn===undefined || expiresIn===null) { expiresIn = 0; }
if (expiresIn < now) {// Expired
removeStorage(key);
return null;
} else {
try {
var value = localStorage.getItem(key);
return value;
} catch(e) {
console.log('getStorage: Error reading key ['+ key + '] from localStorage: ' + JSON.stringify(e) );
return null;
}
}
}
/* setStorage: writes a key into localStorage setting a expire time
params:
key <string> : localStorage key
value <string> : localStorage value
expires <number> : number of seconds from now to expire the key
returns:
<boolean> : telling if operation succeeded
*/
function setStorage(key, value, expires) {
if (expires===undefined || expires===null) {
expires = (24*60*60); // default: seconds for 1 day
} else {
expires = Math.abs(expires); //make sure it's positive
}
var now = Date.now(); //millisecs since epoch time, lets deal only with integer
var schedule = now + expires*1000;
try {
localStorage.setItem(key, value);
localStorage.setItem(key + '_expiresIn', schedule);
} catch(e) {
console.log('setStorage: Error setting key ['+ key + '] in localStorage: ' + JSON.stringify(e) );
return false;
}
return true;
}
First off it's important to understand that there are two kinds of "event listeners":
Scope event listeners registered via $on
:
$scope.$on('anEvent', function (event, data) {
...
});
Event handlers attached to elements via for example on
or bind
:
element.on('click', function (event) {
...
});
When $scope.$destroy()
is executed it will remove all listeners registered via $on
on that $scope.
It will not remove DOM elements or any attached event handlers of the second kind.
This means that calling $scope.$destroy()
manually from example within a directive's link function will not remove a handler attached via for example element.on
, nor the DOM element itself.
Note that remove
is a jqLite method (or a jQuery method if jQuery is loaded before AngularjS) and is not available on a standard DOM Element Object.
When element.remove()
is executed that element and all of its children will be removed from the DOM together will all event handlers attached via for example element.on
.
It will not destroy the $scope associated with the element.
To make it more confusing there is also a jQuery event called $destroy
. Sometimes when working with third-party jQuery libraries that remove elements, or if you remove them manually, you might need to perform clean up when that happens:
element.on('$destroy', function () {
scope.$destroy();
});
This depends on how the directive is "destroyed".
A normal case is that a directive is destroyed because ng-view
changes the current view. When this happens the ng-view
directive will destroy the associated $scope, sever all the references to its parent scope and call remove()
on the element.
This means that if that view contains a directive with this in its link function when it's destroyed by ng-view
:
scope.$on('anEvent', function () {
...
});
element.on('click', function () {
...
});
Both event listeners will be removed automatically.
However, it's important to note that the code inside these listeners can still cause memory leaks, for example if you have achieved the common JS memory leak pattern circular references
.
Even in this normal case of a directive getting destroyed due to a view changing there are things you might need to manually clean up.
For example if you have registered a listener on $rootScope
:
var unregisterFn = $rootScope.$on('anEvent', function () {});
scope.$on('$destroy', unregisterFn);
This is needed since $rootScope
is never destroyed during the lifetime of the application.
The same goes if you are using another pub/sub implementation that doesn't automatically perform the necessary cleanup when the $scope is destroyed, or if your directive passes callbacks to services.
Another situation would be to cancel $interval
/$timeout
:
var promise = $interval(function () {}, 1000);
scope.$on('$destroy', function () {
$interval.cancel(promise);
});
If your directive attaches event handlers to elements for example outside the current view, you need to manually clean those up as well:
var windowClick = function () {
...
};
angular.element(window).on('click', windowClick);
scope.$on('$destroy', function () {
angular.element(window).off('click', windowClick);
});
These were some examples of what to do when directives are "destroyed" by Angular, for example by ng-view
or ng-if
.
If you have custom directives that manage the lifecycle of DOM elements etc. it will of course get more complex.
You may find if a process (given its name or PID) is running or not by iterating over the running processes simply by taking a snapshot of running processes via CreateToolhelp32Snapshot, and by using Process32First and Process32Next calls on that snapshot.
Then you may use th32ProcessID field or szExeFile field of the resulting PROCESSENTRY32 struct depending on whether you want to search by PID or executable name. A simple implementation can be found here.
Well, I get the attr rows from the table and get the length for that collection:
$("#myTable").attr('rows').length;
I think that jQuery works less.
I had the same problem and the solution was to encapsulate the json inside this function
jsonp(
.... your json ...
)
It used to be generally recommended best practice1 to use pass by const ref for all types, except for builtin types (char
, int
, double
, etc.), for iterators and for function objects (lambdas, classes deriving from std::*_function
).
This was especially true before the existence of move semantics. The reason is simple: if you passed by value, a copy of the object had to be made and, except for very small objects, this is always more expensive than passing a reference.
With C++11, we have gained move semantics. In a nutshell, move semantics permit that, in some cases, an object can be passed “by value” without copying it. In particular, this is the case when the object that you are passing is an rvalue.
In itself, moving an object is still at least as expensive as passing by reference. However, in many cases a function will internally copy an object anyway — i.e. it will take ownership of the argument.2
In these situations we have the following (simplified) trade-off:
“Pass by value” still causes the object to be copied, unless the object is an rvalue. In the case of an rvalue, the object can be moved instead, so that the second case is suddenly no longer “copy, then move” but “move, then (potentially) move again”.
For large objects that implement proper move constructors (such as vectors, strings …), the second case is then vastly more efficient than the first. Therefore, it is recommended to use pass by value if the function takes ownership of the argument, and if the object type supports efficient moving.
A historical note:
In fact, any modern compiler should be able to figure out when passing by value is expensive, and implicitly convert the call to use a const ref if possible.
In theory. In practice, compilers can’t always change this without breaking the function’s binary interface. In some special cases (when the function is inlined) the copy will actually be elided if the compiler can figure out that the original object won’t be changed through the actions in the function.
But in general the compiler can’t determine this, and the advent of move semantics in C++ has made this optimisation much less relevant.
1 E.g. in Scott Meyers, Effective C++.
2 This is especially often true for object constructors, which may take arguments and store them internally to be part of the constructed object’s state.
The enumerate
function returns a generator object which, at each iteration, yields a tuple containing the index of the element (i
), numbered starting from 0
by default, coupled with the element itself (a
), and the for
loop conveniently allows you to access both fields of those generated tuples and assign variable names to them.
Your method looks like this:
public static bool HasProperty(this object obj, string propertyName)
{
return obj.GetType().GetProperty(propertyName) != null;
}
This adds an extension onto object
- the base class of everything. When you call this extension you're passing it a Type
:
var res = typeof(MyClass).HasProperty("Label");
Your method expects an instance of a class, not a Type
. Otherwise you're essentially doing
typeof(MyClass) - this gives an instanceof `System.Type`.
Then
type.GetType() - this gives `System.Type`
Getproperty('xxx') - whatever you provide as xxx is unlikely to be on `System.Type`
As @PeterRitchie correctly points out, at this point your code is looking for property Label
on System.Type
. That property does not exist.
The solution is either
a) Provide an instance of MyClass to the extension:
var myInstance = new MyClass()
myInstance.HasProperty("Label")
b) Put the extension on System.Type
public static bool HasProperty(this Type obj, string propertyName)
{
return obj.GetProperty(propertyName) != null;
}
and
typeof(MyClass).HasProperty("Label");
Instead of working with positioning and padding/margin and without knowing the header's size, there's a way to keep the header fixed by playing with the scroll.
See the this plunker with a fixed header:
<html lang="en" style="height: 100%">
<body style="height: 100%">
<div style="height: 100%; overflow: hidden">
<div>Header</div>
<div style="height: 100%; overflow: scroll">Content - very long Content...
The key here is a mix of height: 100%
with overflow
.
See a specific question on removing the scroll from the header here and answer here.
The way to use should still be the toInteger(), because it is not really deprecated.
int value = '99'.toInteger()
The String version is deprecated, but the CharSequence is an Interface that a String implements. So, using a String is ok, because your code will still works even when the method will only work with CharSequence. Same goes for isInteger()
See this question for reference : How to convert a String to CharSequence?
I commented, because the notion of deprecated on this method got me confuse and I want to avoid that for other people.
Add a style = color:black !important;
in your input type.
The NativeHeap can be increasded by -XX:MaxDirectMemorySize=256M (default is 128)
I've never used it. Maybe you'll find it useful.
This is the way how I simulate constructor in functional components using the useRef
hook:
function Component(props) {
const willMount = useRef(true);
if (willMount.current) {
console.log('This runs only once before rendering the component.');
willMount.current = false;
}
return (<h1>Meow world!</h1>);
}
Here is the lifecycle example:
function RenderLog(props) {
console.log('Render log: ' + props.children);
return (<>{props.children}</>);
}
function Component(props) {
console.log('Body');
const [count, setCount] = useState(0);
const willMount = useRef(true);
if (willMount.current) {
console.log('First time load (it runs only once)');
setCount(2);
willMount.current = false;
} else {
console.log('Repeated load');
}
useEffect(() => {
console.log('Component did mount (it runs only once)');
return () => console.log('Component will unmount');
}, []);
useEffect(() => {
console.log('Component did update');
});
useEffect(() => {
console.log('Component will receive props');
}, [count]);
return (
<>
<h1>{count}</h1>
<RenderLog>{count}</RenderLog>
</>
);
}
[Log] Body
[Log] First time load (it runs only once)
[Log] Body
[Log] Repeated load
[Log] Render log: 2
[Log] Component did mount (it runs only once)
[Log] Component did update
[Log] Component will receive props
Of course Class components don't have Body
steps, it's not possible to make 1:1 simulation due to different concepts of functions and classes.
I have been facing the same problem.
In JS, first you have to clear the textbox of the text input. Otherwise the placeholder text won't show.
Here's my solution.
document.getElementsByName("email")[0].value="";
document.getElementsByName("email")[0].placeholder="your message";
There is a bunch on here:
http://www.webservicex.net/WS/wscatlist.aspx
Just google for "Free WebService" or "Open WebService" and you'll find tons of open SOAP endpoints.
Remember, you can get a WSDL from any ASMX endpoint by adding ?WSDL to the url.
As android latest update doesn't support 'compile' keyword use 'implementation' in place inside your module build.gradle file.
And check thoroughly in build.gradle for dependancy with + sign like this.
implementation 'com.android.support:support-v4:28.+'
If there are any dependencies like this, just update them with a specific version. After that:
Try this:
<select id="sel">
<option value='1'>One</option>
<option value='2'>Two</option>
<option value='3'>Three</option>
</select>
<input type="button" value="Change option to 2" onclick="changeOpt()"/>
<script>
function changeOpt(){
document.getElementById("sel").options[1].selected = true;
alert("changed")
}
</script>
A generic,simpler and a bit primitive approach to find tag, attribute and value
Pattern pattern = Pattern.compile("<(\\w+)( +.+)*>((.*))</\\1>");
System.out.println(pattern.matcher("<asd> TEST</asd>").find());
System.out.println(pattern.matcher("<asd TEST</asd>").find());
System.out.println(pattern.matcher("<asd attr='3'> TEST</asd>").find());
System.out.println(pattern.matcher("<asd> <x>TEST<x>asd>").find());
System.out.println("-------");
Matcher matcher = pattern.matcher("<as x> TEST</as>");
if (matcher.find()) {
for (int i = 0; i <= matcher.groupCount(); i++) {
System.out.println(i + ":" + matcher.group(i));
}
}
On OS X, use pbcopy
; pbpaste
goes in the opposite direction.
pbcopy < .ssh/id_rsa.pub
Although I agree with @assylias that using @BeforeClass
is a classic solution it is not always convenient. The method annotated with @BeforeClass
must be static. It is very inconvenient for some tests that need instance of test case. For example Spring based tests that use @Autowired
to work with services defined in spring context.
In this case I personally use regular setUp()
method annotated with @Before
annotation and manage my custom static
(!) boolean
flag:
private static boolean setUpIsDone = false;
.....
@Before
public void setUp() {
if (setUpIsDone) {
return;
}
// do the setup
setUpIsDone = true;
}
TypeScript users:
I know the OP asked about javascript, but for any TypeScript users who come across this who want to spy on an imported function, here's what you can do.
In the test file, convert the import of the function from this:
import {foo} from '../foo_functions';
x = foo(y);
To this:
import * as FooFunctions from '../foo_functions';
x = FooFunctions.foo(y);
Then you can spy on FooFunctions.foo
:)
spyOn(FooFunctions, 'foo').and.callFake(...);
// ...
expect(FooFunctions.foo).toHaveBeenCalled();
Check out Jazor. It's a simple command line JSON parser written in Ruby.
gem install jazor
jazor --help
Vinay is correct. In answer to your comment in his answer, one way you can do it is as follows:
<root>
<level value="ALL" />
<appender-ref ref="File1Appender" />
</root>
<logger name="SomeName">
<level value="ALL" />
<appender-ref ref="File1Appender2" />
</logger>
This is how I have done it in the past. Then something like this for the other log:
private static readonly ILog otherLog = LogManager.GetLogger("SomeName");
And you can get your normal logger as follows:
private static readonly ILog log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
Read the loggers and appenders section of the documentation to understand how this works.
If you subclass Webview, you can simply override onTouchEvent to filter out the move-events that trigger scrolling.
public class SubWebView extends WebView {
@Override
public boolean onTouchEvent (MotionEvent ev) {
if(ev.getAction() == MotionEvent.ACTION_MOVE) {
postInvalidate();
return true;
}
return super.onTouchEvent(ev);
}
...
I've tried to find a "fit to screen" property but there is no such.
But setting widget's "maximumSize" to a "some big number" ( like 2000 x 2000 ) will automatically fit the widget to the parent widget space.
You could do something like this to achieve the effect you are after:
$_GET['id']=$somevar;
include('myFile.php');
However, it sounds like you are using this include like some kind of function call (you mention calling it repeatedly with different arguments).
In this case, why not turn it into a regular function, included once and called multiple times?
Freshly-made function for PHP 5.2 compatibility, if you need the decoded data on success:
function try_json_decode( $json, & $success = null ){
// non-strings may cause warnings
if( !is_string( $json )){
$success = false;
return $json;
}
$data = json_decode( $json );
// output arg
$success =
// non-null data: success!
$data !== null ||
// null data from 'null' json: success!
$json === 'null' ||
// null data from ' null ' json padded with whitespaces: success!
preg_match('/^\s*null\s*$/', $json );
// return decoded or original data
return $success ? $data : $json;
}
Usage:
$json_or_not = ...;
$data = try_json_decode( $json_or_not, $success );
if( $success )
process_data( $data );
else what_the_hell_is_it( $data );
Some tests:
var_dump( try_json_decode( array(), $success ), $success );
// ret = array(0){}, $success == bool(false)
var_dump( try_json_decode( 123, $success ), $success );
// ret = int(123), $success == bool(false)
var_dump( try_json_decode(' ', $success ), $success );
// ret = string(6) " ", $success == bool(false)
var_dump( try_json_decode( null, $success ), $success );
// ret = NULL, $success == bool(false)
var_dump( try_json_decode('null', $success ), $success );
// ret = NULL, $success == bool(true)
var_dump( try_json_decode(' null ', $success ), $success );
// ret = NULL, $success == bool(true)
var_dump( try_json_decode(' true ', $success ), $success );
// ret = bool(true), $success == bool(true)
var_dump( try_json_decode(' "hello" ', $success ), $success );
// ret = string(5) "hello", $success == bool(true)
var_dump( try_json_decode(' {"a":123} ', $success ), $success );
// ret = object(stdClass)#2 (1) { ["a"]=> int(123) }, $success == bool(true)
The spread operator is kinda cool.
this.results = [ ...this.results, ...data.results];
The spread operator allows you to easily place an expanded version of an array into another array.
There is another one way, in which you can get indexPath of the cell where your button was pressed:
using usual action selector like:
UIButton *btn = ....;
[btn addTarget:self action:@selector(yourFunction:) forControlEvents:UIControlEventTouchUpInside];
and then in in yourFunction:
- (void) yourFunction:(id)sender {
UIButton *button = sender;
CGPoint center = button.center;
CGPoint rootViewPoint = [button.superview convertPoint:center toView:self.tableView];
NSIndexPath *indexPath = [self.tableView indexPathForRowAtPoint:rootViewPoint];
//the rest of your code goes here
..
}
since you get an indexPath it becames much simplier.
You can upload files by dragging and dropping or by pointing and clicking. To upload folders, you must drag and drop them. Drag and drop functionality is supported only for the Chrome and Firefox browsers
Press Ctrl-a then : and then type
scrollback 10000
to get a 10000 line buffer, for example.
You can also set the default number of scrollback lines by adding
defscrollback 10000
to your ~/.screenrc
file.
To scroll (if your terminal doesn't allow you to by default), press Ctrl-a ESC and then scroll (with the usual Ctrl-f for next page or Ctrl-a for previous page, or just with your mouse wheel / two-fingers). To exit the scrolling mode, just press ESC.
Another tip: Ctrl-a i shows your current buffer setting.
try this one:
<table style="border:1px solid">
<tr>
<td style="min-width:50px">one</td>
<td style="min-width:100px">two</td>
</tr>
</table>
_x000D_
$(document).on("click", function(event){
var a = $(event.target).parents();
var flaghide = true;
a.each(function(index, val){
if(val == $(container)[0]){
flaghide = false;
}
});
if(flaghide == true){
//required code
}
})
Try this:
table {
border-collapse: separate;
border-spacing: 10px;
}
table td, table th {
padding: 10px;
}
Or try this:
table {
border-collapse: collapse;
}
table td, table th {
padding: 10px;
}
jQuery's data()
method will give you access to data-*
attributes, BUT, it clobbers the case of the attribute name. You can either use this:
$('#myButton').data("x10") // note the lower case
Or, you can use the attr()
method, which preserves your case:
$('#myButton').attr("data-X10")
Try both methods here: http://jsfiddle.net/q5rbL/
Be aware that these approaches are not completely equivalent. If you will change the data-*
attribute of an element, you should use attr()
. data()
will read the value once initially, then continue to return a cached copy, whereas attr()
will re-read the attribute each time.
Note that jQuery will also convert hyphens in the attribute name to camel case (source -- i.e. data-some-data == $(ele).data('someData')
). Both of these conversions are in conformance with the HTML specification, which dictates that custom data attributes should contain no uppercase letters, and that hyphens will be camel-cased in the dataset
property (source). jQuery's data
method is merely mimicking/conforming to this standard behavior.
Documentation
data
- http://api.jquery.com/data/attr
- http://api.jquery.com/attr/For select2 version >= 4.0.0
The other solutions might not work, however the following examples should work.
$('select').val('1').trigger('change');
$('select').val('1').trigger('change.select2');
See this jsfiddle for examples of these. Thanks to @minlare for Solution 2.
Say I have a best friend select with people's names. So Bob, Bill and John (in this example I assume the Value is the same as the name). First I initialize select2 on my select:
$('#my-best-friend').select2();
Now I manually select Bob in the browser. Next Bob does something naughty and I don't like him anymore. So the system unselects Bob for me:
$('#my-best-friend').val('').trigger('change');
Or say I make the system select the next in the list instead of Bob:
// I have assume you can write code to select the next guy in the list
$('#my-best-friend').val('Bill').trigger('change');
Notes on Select 2 website (see Deprecated and removed methods) that might be useful for others:
.select2('val') The "val" method has been deprecated and will be removed in Select2 4.1. The deprecated method no longer includes the triggerChange parameter.
You should directly call .val on the underlying element instead. If you needed the second parameter (triggerChange), you should also call .trigger("change") on the element.
$('select').val('1').trigger('change'); // instead of $('select').select2('val', '1');
We are looking at building a few helpers, still deciding on APIs and if this goes in core or not. See: https://code.google.com/archive/p/dapper-dot-net/issues/6 for progress.
In the mean time you can do the following
val = "my value";
cnn.Execute("insert into Table(val) values (@val)", new {val});
cnn.Execute("update Table set val = @val where Id = @id", new {val, id = 1});
etcetera
See also my blog post: That annoying INSERT problem
Update
As pointed out in the comments, there are now several extensions available in the Dapper.Contrib project in the form of these IDbConnection
extension methods:
T Get<T>(id);
IEnumerable<T> GetAll<T>();
int Insert<T>(T obj);
int Insert<T>(Enumerable<T> list);
bool Update<T>(T obj);
bool Update<T>(Enumerable<T> list);
bool Delete<T>(T obj);
bool Delete<T>(Enumerable<T> list);
bool DeleteAll<T>();
I had this same issue and found that pkg-config
package was missing.
After installing the package, everything generated correctly.
I think you're missing your routes, you need to define at least one route for example '/' to index.
e.g.
app.get('/', function (req, res) {
res.render('index', {});
});
This is so called file local variables, that are understood by Emacs and set correspondingly. See corresponding section in Emacs manual - you can define them either in header or in footer of file
Sometimes you get broken code, when using dex2jar
/apktool
, most notably in loops. To avoid this, use jadx, which decompiles dalvik bytecode into java source code, without creating a .jar
/.class
file first as dex2jar
does (apktool uses dex2jar I think). It is also open-source and in active development. It even has a GUI, for GUI-fanatics. Try it!
If you clone with the --depth
parameter, it sets .git/config
not to fetch all branches, but only master.
You can simply omit the parameter or update the configuration file from
fetch = +refs/heads/master:refs/remotes/origin/master
to
fetch = +refs/heads/*:refs/remotes/origin/*
Make sure you didn't by mistake changed the file type of __init__.py
files. If, for example, you changed their type to "Text" (instead of "Python"), PyCharm won't analyze the file for Python code. In that case, you may notice that the file icon for __init__.py
files is different from other Python files.
To fix, in Settings > Editor > File Types
, in the "Recognized File Types" list click on "Text" and in the "File name patterns" list remove __init__.py
.
var postData = "text";
$.ajax({
type: "post",
url: "url",
data: postData,
contentType: "application/x-www-form-urlencoded",
success: function(responseData, textStatus, jqXHR) {
alert("data saved")
},
error: function(jqXHR, textStatus, errorThrown) {
console.log(errorThrown);
}
})
If you don't want the image to affect the layout at all (and float on top of other content) you can apply the following CSS to the image:
position:absolute;
right:0;
top:0;
If you want it to float at the right of a particular parent section, you can add position: relative
to that section.
x = x + m = x - m
in modulus m
.
so -13 = -13 + 64
in modulus 64
and -13 = 51
in modulus 64
.
assume Z = X * d + r
, if 0 < r < X
then in division Z/X
we call r
the remainder.
Z % X
returns the remainder of Z/X
.
Try line-height
like I've done here:
http://jsfiddle.net/BqTUS/5/
This is not a matter of accuracy, nor is it a matter of precision. It is a matter of meeting the expectations of humans who use base 10 for calculations instead of base 2. For example, using doubles for financial calculations does not produce answers that are "wrong" in a mathematical sense, but it can produce answers that are not what is expected in a financial sense.
Even if you round off your results at the last minute before output, you can still occasionally get a result using doubles that does not match expectations.
Using a calculator, or calculating results by hand, 1.40 * 165 = 231 exactly. However, internally using doubles, on my compiler / operating system environment, it is stored as a binary number close to 230.99999... so if you truncate the number, you get 230 instead of 231. You may reason that rounding instead of truncating would have given the desired result of 231. That is true, but rounding always involves truncation. Whatever rounding technique you use, there are still boundary conditions like this one that will round down when you expect it to round up. They are rare enough that they often will not be found through casual testing or observation. You may have to write some code to search for examples that illustrate outcomes that do not behave as expected.
Assume you want to round something to the nearest penny. So you take your final result, multiply by 100, add 0.5, truncate, then divide the result by 100 to get back to pennies. If the internal number you stored was 3.46499999.... instead of 3.465, you are going to get 3.46 instead 3.47 when you round the number to the nearest penny. But your base 10 calculations may have indicated that the answer should be 3.465 exactly, which clearly should round up to 3.47, not down to 3.46. These kinds of things happen occasionally in real life when you use doubles for financial calculations. It is rare, so it often goes unnoticed as an issue, but it happens.
If you use base 10 for your internal calculations instead of doubles, the answers are always exactly what is expected by humans, assuming no other bugs in your code.
I upgraded from 2010 to 2013 and after changing all the projects' Platform Toolset, I need to right-click on the Solution and choose Retarget... to make it work.
Simple method using System.Data.DataSetExtensions
:
table.AsEnumerable().Select(row => new TankReading{
TankReadingsID = Convert.ToInt32(row["TRReadingsID"]),
TankID = Convert.ToInt32(row["TankID"]),
ReadingDateTime = Convert.ToDateTime(row["ReadingDateTime"]),
ReadingFeet = Convert.ToInt32(row["ReadingFeet"]),
ReadingInches = Convert.ToInt32(row["ReadingInches"]),
MaterialNumber = row["MaterialNumber"].ToString(),
EnteredBy = row["EnteredBy"].ToString(),
ReadingPounds = Convert.ToDecimal(row["ReadingPounds"]),
MaterialID = Convert.ToInt32(row["MaterialID"]),
Submitted = Convert.ToBoolean(row["Submitted"]),
});
Or:
TankReading TankReadingFromDataRow(DataRow row){
return new TankReading{
TankReadingsID = Convert.ToInt32(row["TRReadingsID"]),
TankID = Convert.ToInt32(row["TankID"]),
ReadingDateTime = Convert.ToDateTime(row["ReadingDateTime"]),
ReadingFeet = Convert.ToInt32(row["ReadingFeet"]),
ReadingInches = Convert.ToInt32(row["ReadingInches"]),
MaterialNumber = row["MaterialNumber"].ToString(),
EnteredBy = row["EnteredBy"].ToString(),
ReadingPounds = Convert.ToDecimal(row["ReadingPounds"]),
MaterialID = Convert.ToInt32(row["MaterialID"]),
Submitted = Convert.ToBoolean(row["Submitted"]),
};
}
// Now you can do this
table.AsEnumerable().Select(row => return TankReadingFromDataRow(row));
Or, better yet, create a TankReading(DataRow r)
constructor, then this becomes:
table.AsEnumerable().Select(row => return new TankReading(row));
I used this code:
ws.Range("A:A").FormulaR1C1 = "=DATEVALUE(RC[1])"
column A will be mm/dd/yyyy
RC[1] is column B, the TEXT string, eg, 01/30/12, THIS IS NOT DATE TYPE
You can use the [DisplayFormat] attribute on your view model as you want to apply this format for the whole project.
[DisplayFormat(ApplyFormatInEditMode = true, DataFormatString = "{0:dd/MM/yyyy}")]
public Nullable<System.DateTime> Date { get; set; }
Webkit browsers (not sure about FireBug) allow you to copy the HTML of an element easily, so that's one part of the process out of the way.
Running this (in the javascript console) prior to copying the HTML for an element will move all the computed styles for the parent element given, as well as all child elements, into the inline style attribute which will then be available as part of the HTML.
var el = document.querySelector("#someid");
var els = el.getElementsByTagName("*");
for(var i = -1, l = els.length; ++i < l;){
els[i].setAttribute("style", window.getComputedStyle(els[i]).cssText);
}
It's a total hack and you'll have alot of "junk" css attributes to wade through, but should at least get your started.
package com.dipu.string;
import java.util.HashMap;
import java.util.Map;
public class RepetativeCharInString {
public static void main(String[] args) {
String data = "aaabbbcccdddffffrss";
char[] charArray = data.toCharArray();
Map<Character, Integer> map = new HashMap<>();
for (char c : charArray) {
if (map.containsKey(c)) {
map.put(c, map.get(c) + 1);
} else {
map.put(c, 1);
}
}
System.out.println(map);
}
}
You can adjust the subplot geometry in the very tight_layout
call as follows:
fig.tight_layout(rect=[0, 0.03, 1, 0.95])
As it's stated in the documentation (https://matplotlib.org/users/tight_layout_guide.html):
tight_layout()
only considers ticklabels, axis labels, and titles. Thus, other artists may be clipped and also may overlap.
I have strange solution for this problem. I was fased to this during coding. I thought that Bitmap is struct and wrap around it with method. In my imagination Bitmap will be copies inside method and returned out of method. But later I checked that it's class, and i have no idea why is it helped me, but it Works! Maybe someone have time and have fun to look at IL code of this ;) Not sure maybe it's working cause this method is static inside static method, I don't know.
public SomeClass
{
public byte[] _screenShotByte;
public Bitmap _screenShotByte;
public Bitmap ScreenShot
{
get
{
if (_screenShot == null)
{
_screenShotByte = ScreenShot();
using (var ms = new MemoryStream(_screenShotByte))
{
_screenShot = (Bitmap)Image.FromStream(ms);
}
ImageUtils.GetBitmap(_screenShot).Save(Path.Combine(AppDomain.CurrentDomain.BaseDirectory) ,$"{DateTime.Now.ToFileTimeUtc()}.png"));
}
return ImageUtils.GetBitmap(_screenShot);
}
}
public byte[] ScreenShot()
{
///....return byte array for image in my case implementedd like selenium screen shot
}
}
public static ImageUtils
{
public static Bitmap GetBitmap(Bitmap image)
{
return Bitmap;
}
}
p.s. It's not trolling this solution solved problem of keep using bitmap after saving in another places.
Or, for less code, inside your click you place:
setTimeout(function(){
$('#DIV_ID').scrollTop(0);
}, 500);
You can do it using only the shell, no need for tr
or sed
$ str="This is just a test"
$ echo ${str// /_}
This_is_just_a_test
I'm surprised nobody mentioned diff -y
to produce a side-by-side output, for example:
diff -y file1 file2 > file3
And in file3
(different lines have a symbol |
in middle):
same same
diff_1 | diff_2
Just to add,
if you're using many of them then you can import all using
import 'rxjs/Rx';
as mentioned by @Thierry Templier. But I think If you are using limited operator then you should import individual operator like
import 'rxjs/add/operator/filter';
import 'rxjs/add/operator/mergeMap';
import 'rxjs/add/observable/of';
as mentioned by @uksz.
Because 'rxjs/Rx' will import all the Rx components which definitely cost performance.
You haven't posted the findvertex
method, but Access Reading Violation with an offset like 0x00000048
means that the Vertex* f;
in your getCost function is receiving null, and when trying to access the member adj
in the null
Vertex pointer (that is, in f
), it is offsetting to adj
(in this case, 72 bytes ( 0x48 bytes in decimal )), it's reading near the 0
or null
memory address.
Doing a read like this violates Operating-System protected memory, and more importantly means whatever you're pointing at isn't a valid pointer. Make sure findvertex
isn't returning null, or do a comparisong for null on f
before using it to keep yourself sane (or use an assert):
assert( f != null ); // A good sanity check
EDIT:
If you have a map
for doing something like a find, you can just use the map's find
method to make sure the vertex exists:
Vertex* Graph::findvertex(string s)
{
vmap::iterator itr = map1.find( s );
if ( itr == map1.end() )
{
return NULL;
}
return itr->second;
}
Just make sure you're still careful to handle the error case where it does return NULL
. Otherwise, you'll keep getting this access violation.
Based on the answer by @peteb, but using Promises
and Async/Await
:
const AWS = require('aws-sdk');
const s3 = new AWS.S3();
async function getObject (bucket, objectKey) {
try {
const params = {
Bucket: bucket,
Key: objectKey
}
const data = await s3.getObject(params).promise();
return data.Body.toString('utf-8');
} catch (e) {
throw new Error(`Could not retrieve file from S3: ${e.message}`)
}
}
// To retrieve you need to use `await getObject()` or `getObject().then()`
getObject('my-bucket', 'path/to/the/object.txt').then(...);
It depends on the nature of your application. And, since you did not describe it in great detail, it is an impossible question to answer. I find Backbone to be the easiest, but I work in Angular all day. Performance is more up to the coder than the framework, in my opinion.
Are you doing heavy DOM manipulation? I would use jQuery and Backbone.
Very data driven app? Angular with its nice data binding.
Game programming? None - direct to canvas; maybe a game engine.
You can use ComboBox, then point your mouse to the upper arrow facing right, it will unfold a box called ComboBox Tasks and in there you can go ahead and edit your items or fill in the items / strings one per line. This should be the easiest.
Try my way :
robocopy.exe "Desktop\Test folder 1" "Desktop\Test folder 2" /XD "C:\Users\Steve\Desktop\Test folder 2\XXX dont touch" /MIR
Had to put /XD
before /MIR
while including the full Destination Source directly after /XD
.
use dos2unix
on your script file.
Worth noting, that depending on your purpose (mine was the autofill results of a searchbar) you may want the height to be changeable, and for the scrollbar to only exist if the height exceeds that.
If you want that, replace height: x;
with max-height: x;
, and overflow:scroll
with overflow:auto
.
Additionally, you can use overflow-x
and overflow-y
if you want, and obviously the same thing works horizontally with width : x;
This Should Work:
import glob
extensions = ('*.txt', '*.mdown', '*.markdown')
for i in extensions:
for files in glob.glob(i):
print (files)
also be aware that if you are creating a array within a method, you cannot return it. If you return a pointer to it, it would have been removed from the stack when the function returns. you must allocate memory onto the heap and return a pointer to that. eg.
//this is bad
char* getname()
{
char name[100];
return name;
}
//this is better
char* getname()
{
char *name = malloc(100);
return name;
//remember to free(name)
}
I would suggest using the String.Compare method. Using that method you can also control whether to to have it perform case-sensitive comparisons or not.
Sample:
Dim str1 As String = "String one"
Dim str2 As String = str1
Dim str3 As String = "String three"
Dim str4 As String = str3
If String.Compare(str1, str2) = 0 And String.Compare(str3, str4) = 0 Then
MessageBox.Show("str1 = str2 And str3 = str4")
Else
MessageBox.Show("Else")
End If
Edit: if you want to perform a case-insensitive search you can use the StringComparison parameter:
If String.Compare(str1, str2, StringComparison.InvariantCultureIgnoreCase) = 0 And String.Compare(str3, str4, StringComparison.InvariantCultureIgnoreCase) = 0 Then
Switches based on integers can be optimized to very efficent code. Switches based on other data type can only be compiled to a series of if() statements.
For that reason C & C++ only allow switches on integer types, since it was pointless with other types.
The designers of C# decided that the style was important, even if there was no advantage.
The designers of Java apparently thought like the designers of C.
This one line of code in writeToParcel(Parcel dest, int flags) method helped me to get rid of TransactionTooLargeException.
dest=Parcel.obtain();
After this code only i am writing all data to the parcel object i.e dest.writeInt() etc.
Ryan Dahl answers this question in the tech talk he gave at Google last summer. To paraphrase, "just run multiple node processes and use something sensible to allow them to communicate. e.g. sendmsg()-style IPC or traditional RPC".
If you want to get your hands dirty right away, check out the spark2 Forever module. It makes spawning multiple node processes trivially easy. It handles setting up port sharing, so they can each accept connections to the same port, and also auto-respawning if you want to make sure a process is restarted if/when it dies.
UPDATE - 10/11/11: Consensus in the node community seems to be that Cluster is now the preferred module for managing multiple node instances per machine. Forever is also worth a look.
Localstorage is attached on the global window
. When we log localstorage in the chrome devtools we see that it has the following APIs:
We can use the following API's for deleting items:
localStorage.clear()
: Clears the whole localstoragelocalStorage.removeItem('myItem')
: To remove individual itemsI used flutter to create iOS project. When build for Simulator, failed with the same error message. It is solved by following work.
xCode 12.3 Build Settings->Build Active Architecture Only, set it to Yes.
the & is the default value for DEFINE, which allows you to use substitution variables. I like to turn it off using
SET DEFINE OFF
then you won't have to worry about escaping or CHR(38).
As I can see the array is of String only.For each loop can be used to get individual element of the array and put them in local inner class for use.
Below is the code snippet for it :
//WorkAround
for (String color : colors ){
String pos = Character.toUpperCase(color.charAt(0)) + color.substring(1);
JMenuItem Jmi =new JMenuItem(pos);
Jmi.setIcon(new IconA(color));
Jmi.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
JMenuItem item = (JMenuItem) e.getSource();
IconA icon = (IconA) item.getIcon();
// HERE YOU USE THE String color variable and no errors!!!
Color kolorIkony = getColour(color);
textArea.setForeground(kolorIkony);
}
});
mnForeground.add(Jmi);
}
}
If you made a merge on Github and are seeing the error below. You need to pull (fetch and commit) the changes from the remote server before it will recognize the merge on your local. After doing this, Git will allow you to delete the branch without giving you the error.
error: The branch 'x' is not fully merged. If you are sure you want to delete it, run 'git branch -D 'x'.
A good example of using the Generic Repository pattern and implementing a generic solution for this might look something like this.
public IList<TEntity> Get<TParamater>(IList<Expression<Func<TEntity, TParamater>>> includeProperties)
{
foreach (var include in includeProperties)
{
query = query.Include(include);
}
return query.ToList();
}
Can you override the function? Will this not work:
function doSomething(id){}
function doSomething(id,parameters){}
function doSomething(id,parameters,callback){}
From stack trace:
HikariPool: Timeout failure pool HikariPool-0 stats (total=20, active=20, idle=0, waiting=0) Means pool reached maximum connections limit set in configuration.
The next line: HikariPool-0 - Connection is not available, request timed out after 30000ms. Means pool waited 30000ms for free connection but your application not returned any connection meanwhile.
Mostly it is connection leak (connection is not closed after borrowing from pool), set leakDetectionThreshold to the maximum value that you expect SQL query would take to execute.
otherwise, your maximum connections 'at a time' requirement is higher than 20 !
Your results will not be helpful unless the arrays are first sorted. To sort an array, run it through Sort-Object.
$x = @(5,1,4,2,3)
$y = @(2,4,6,1,3,5)
Compare-Object -ReferenceObject ($x | Sort-Object) -DifferenceObject ($y | Sort-Object)
Maybe gcc is not in your path? Try finding gcc using which gcc
and add it to your path if it's not already there.
Cross join and inner join are the same with the only difference that in inner join we booleanly filter some of the outcomes of the cartesian product
table1
x--------------------------------------x
| fieldA | fieldB | fieldC |
x----------|-------------|-------------x
| A | B | option1 |
| A | B1 | option2 |
x--------------------------------------x
table2
x--------------------------------------x
| fieldA | fieldB | fieldC |
x----------|-------------|-------------x
| A | B | optionB1 |
| A1 | B1 | optionB2 |
x--------------------------------------x
cross join
A,B,option1,A,B,optionB1
A,B,option1,A1,B1,optionB2
A,B1,option2,A,B,optionB1
A,B1,option2,A1,B1,optionB2
inner join on field1 (only with the value is the same in both tables)
A,B,option1,A,B,optionB1
A,B1,option2,A,B,optionB1
inner join on field1
A,B,option1,A,B,optionB1
It is on design of our data where we decide that there is only one case of the field we are using for the join. Join only cross join both tables and get only the lines accomplishing special boolean expression.
Note that if the fields we are doing our Joins on would be null in both tables we would pass the filter. It is up to us or the database manufacturer to add extra rules to avoid or permit nulls. Adhering to the basics it is just a cross join followed by a filter.
Maybe you can use a work around and try something like:
import datetime
#import mysql
import MySQLdb
conn = MySQLdb.connect(host = '127.0.0.1',user = 'someUser', passwd = 'foobar',db = 'foobardb')
cursor = conn.cursor()
Free, and no external DLL files. Everything is in one CS file. One download is just the CS file, another download is a very easy to understand example. Just tried it today and I can't believe how simple the setup was. It worked on first try, no errors, no nothing.
Use ngInit: https://docs.angularjs.org/api/ng/directive/ngInit
<div ng-repeat="day in forecast_days" ng-init="f = forecast[day.iso]">
{{$index}} - {{day.iso}} - {{day.name}}
Temperature: {{f.temperature}}<br>
Humidity: {{f.humidity}}<br>
...
</div>
Example: http://jsfiddle.net/coma/UV4qF/
Limiting the length of the input is definitely easier. You could accept an arbitrarily-long input by using a loop, reading in a bit at a time, re-allocating space for the string as necessary...
But that's a lot of work, so most C programmers just chop off the input at some arbitrary length. I suppose you know this already, but using fgets() isn't going to allow you to accept arbitrary amounts of text - you're still going to need to set a limit.
This is taken from feb 2018
Follow the following test
Or Click the following Link
Note : USER_NAME will replace by your username
PROJECT_NAME will replace by your repository name
https://gitlab.com/USER_NAME/PROJECT_NAME/edit
click Expand under Advanced settings portion
Click remove project bottom of the page
Convert the image to a byte[]
and store that in the database.
Add this column to your model:
public byte[] Content { get; set; }
Then convert your image to a byte array and store that like you would any other data:
public byte[] ImageToByteArray(System.Drawing.Image imageIn)
{
using(var ms = new MemoryStream())
{
imageIn.Save(ms, System.Drawing.Imaging.ImageFormat.Gif);
return ms.ToArray();
}
}
public Image ByteArrayToImage(byte[] byteArrayIn)
{
using(var ms = new MemoryStream(byteArrayIn))
{
var returnImage = Image.FromStream(ms);
return returnImage;
}
}
Source: Fastest way to convert Image to Byte array
var image = new ImageEntity()
{
Content = ImageToByteArray(image)
};
_context.Images.Add(image);
_context.SaveChanges();
When you want to get the image back, get the byte array from the database and use the ByteArrayToImage
and do what you wish with the Image
This stops working when the byte[]
gets to big. It will work for files under 100Mb
In addition what others mentioned here, note that combining the Application.DispatcherUnhandledException
(and its similars) with
<configuration>
<runtime>
<legacyUnhandledExceptionPolicy enabled="1" />
</runtime>
</configuration>
in the app.config
will prevent your secondary threads exception from shutting down the application.
A number of people found this post helpful.
Also, I needed to do first type this:
yum install mysql-devel
and then:
gem install mysql
For some people you may need to type:
gem install mysql -- --with-mysql-config=/usr/local/mysql/mysql_config
In java you can do some thing like:
if(driver.getTitle().contains("some expected text"))
//Pass
System.out.println("Page title contains \"some expected text\" ");
else
//Fail
System.out.println("Page title doesn't contains \"some expected text\" ");
You can also used like this
<a href="<?php echo 'index.php'; ?>">Index Page</a>
<a href="<?php echo 'page2.php'; ?>">Page 2</a>
In case you are trying to search for a docker image from a docker registry, I guess the easiest way to check if a docker image is present is by using the Docker V2 REST API Tags list service
Example:-
curl $CURLOPTS -H "Authorization: Bearer $token" "https://hub.docker.com:4443/v2/your-repo-name/tags/list"
if the above result returns 200Ok with a list of image tags, then we know that image exists
{"name":"your-repo-name","tags":["1.0.0.1533677221","1.0.0.1533740305","1.0.0.1535659921","1.0.0.1535665433","latest"]}
else if you see something like
{"errors":[{"code":"NAME_UNKNOWN","message":"repository name not known to registry","detail":{"name":"your-repo-name"}}]}
then you know for sure that image doesn't exist.
Even in base Python you can do the computation in generic form
result = sum(x**2 for x in some_vector) ** 0.5
x ** 2
is surely not an hack and the computation performed is the same (I checked with cpython source code). I actually find it more readable (and readability counts).
Using instead x ** 0.5
to take the square root doesn't do the exact same computations as math.sqrt
as the former (probably) is computed using logarithms and the latter (probably) using the specific numeric instruction of the math processor.
I often use x ** 0.5
simply because I don't want to add math
just for that. I'd expect however a specific instruction for the square root to work better (more accurately) than a multi-step operation with logarithms.
Always check with your business domain expert. If that's you, look for an industry standard. If, for example, the domain in question is a natural person's family name (surname) then for a UK business I'd go to the UK Govtalk data standards catalogue for person information and discover that a family name will be between 1 and 35 characters.
cleaned solution :
$.fn.donetyping = function(callback, delay){
delay || (delay = 1000);
var timeoutReference;
var doneTyping = function(elt){
if (!timeoutReference) return;
timeoutReference = null;
callback(elt);
};
this.each(function(){
var self = $(this);
self.on('keyup',function(){
if(timeoutReference) clearTimeout(timeoutReference);
timeoutReference = setTimeout(function(){
doneTyping(self);
}, delay);
}).on('blur',function(){
doneTyping(self);
});
});
return this;
};
Yes you can. You can even test it:
var i = 0;_x000D_
var timer = setInterval(function() {_x000D_
console.log(++i);_x000D_
if (i === 5) clearInterval(timer);_x000D_
console.log('post-interval'); //this will still run after clearing_x000D_
}, 200);
_x000D_
In this example, this timer clears when i
reaches 5.
A one-liner for random RGB values:
new Color((int)(Math.random() * 0x1000000))
EXPLAIN PLAN FOR
In SQL Developer, you don't have to use EXPLAIN PLAN FOR
statement. Press F10
or click the Explain Plan icon.
It will be then displayed in the Explain Plan window.
If you are using SQL*Plus then use DBMS_XPLAN.
For example,
SQL> EXPLAIN PLAN FOR
2 SELECT * FROM DUAL;
Explained.
SQL> SELECT * FROM TABLE(DBMS_XPLAN.DISPLAY);
PLAN_TABLE_OUTPUT
--------------------------------------------------------------------------
Plan hash value: 272002086
--------------------------------------------------------------------------
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time |
--------------------------------------------------------------------------
| 0 | SELECT STATEMENT | | 1 | 2 | 2 (0)| 00:00:01 |
| 1 | TABLE ACCESS FULL| DUAL | 1 | 2 | 2 (0)| 00:00:01 |
--------------------------------------------------------------------------
8 rows selected.
SQL>
You can use a fake factory to include many methods instead of using instanceof:
public class Message1 implements YourInterface {
List<YourObject1> list;
Message1(List<YourObject1> l) {
list = l;
}
}
public class Message2 implements YourInterface {
List<YourObject2> list;
Message2(List<YourObject2> l) {
list = l;
}
}
public class FactoryMessage {
public static List<YourInterface> getMessage(List<YourObject1> list) {
return (List<YourInterface>) new Message1(list);
}
public static List<YourInterface> getMessage(List<YourObject2> list) {
return (List<YourInterface>) new Message2(list);
}
}
To Trim on the right, use:
SELECT RTRIM(Names) FROM Customer
To Trim on the left, use:
SELECT LTRIM(Names) FROM Customer
To Trim on the both sides, use:
SELECT LTRIM(RTRIM(Names)) FROM Customer
The toString()
method returns a textual representation of an object. A basic implementation is already included in java.lang.Object
and so because all objects inherit from java.lang.Object
it is guaranteed that every object in Java has this method.
Overriding the method is always a good idea, especially when it comes to debugging, because debuggers often show objects by the result of the toString()
method. So use a meaningful implementation but use it for technical purposes. The application logic should use getters:
public class Contact {
private String firstName;
private String lastName;
public Contact (String firstName, String lastName) {
this.firstName = firstName;
this.lastName = lastName;
}
public String getFirstName() {return firstName;}
public String getLastName() {return lastName;}
public String getContact() {
return firstName + " " + lastName;
}
@Override
public String toString() {
return "["+getContact()+"]";
}
}
remove annotation configuration like service, repository, components
@Component
@Service
Trying to depict with venn diagrams for better understanding..
Left Semi join : A semi join returns values from the left side of the relation that has a match with the right. It is also referred to as a left semi join.
Note : There is another thing called left anti join : An anti join returns values from the left relation that has no match with the right. It is also referred to as a left anti join.
Inner join : It selects rows that have matching values in both relations.
I use Eclipse Java EE edition
Create a "Dynamic Web Project"
Install a local server in the server view, for the version of Tomcat I'm using. Then debug, and run on that server for testing.
When I deploy I export the project to a war file.
I couldn't see it as an answer here so I thought I would mention that I recieved this error using spring 4.2 when I accidentally removed the getter/setter for the class I was expecting to be returned as Json.
As far as I know, there is no such a thing as iOS emulator on windows or linux, there are only some gameengines that enable you to compile same code for both iOS and windows or linux and there is a toolchain to compile iOS application using linux. none of them are realy emulator/simulator things. and to use that toolchain you need a jailbreaked iOS device to test binary file created using toolchain. I mean linux itself can't run the binary created itself. and by the way even in mac simulator is just an intermediate program which runs mac-compiled binary, since if you change compiling for iOS from simulator or the other way, all the files are rebuild. and also there are some real differences, like iOS is a case-sensitive operation while simulator is not.
so the best solution is to buy an iOS device yourself.
Search for a null value by using \00
For example:
ldapsearch -D cn=admin -w pass -s sub -b ou=users,dc=acme 'manager=\00' uid manager
Make sure if you use the null value on the command line to use quotes around it to prevent the OS shell from sending a null character to LDAP. For example, this won't work:
ldapsearch -D cn=admin -w pass -s sub -b ou=users,dc=acme manager=\00 uid manager
There are various sites that reference this, along with other special characters. Example:
the alphanum function (self answered) have a bug, but I don't know why. For text "cas synt ls 75W140 1L" return "cassyntls75W1401", "L" from the end is missing some how.
Now I use
delimiter //
DROP FUNCTION IF EXISTS alphanum //
CREATE FUNCTION alphanum(prm_strInput varchar(255))
RETURNS VARCHAR(255)
DETERMINISTIC
BEGIN
DECLARE i INT DEFAULT 1;
DECLARE v_char VARCHAR(1);
DECLARE v_parseStr VARCHAR(255) DEFAULT ' ';
WHILE (i <= LENGTH(prm_strInput) ) DO
SET v_char = SUBSTR(prm_strInput,i,1);
IF v_char REGEXP '^[A-Za-z0-9]+$' THEN
SET v_parseStr = CONCAT(v_parseStr,v_char);
END IF;
SET i = i + 1;
END WHILE;
RETURN trim(v_parseStr);
END
//
(found on google)
You can make virtualenvwrapper use a custom Python binary instead of the one virtualenvwrapper is run with. To do that you need to use VIRTUALENV_PYTHON variable which is utilized by virtualenv:
$ export VIRTUALENV_PYTHON=/usr/bin/python3
$ mkvirtualenv -a myproject myenv
Running virtualenv with interpreter /usr/bin/python3
New python executable in myenv/bin/python3
Also creating executable in myenv/bin/python
(myenv)$ python
Python 3.2.3 (default, Oct 19 2012, 19:53:16)
[GCC 4.7.2] on linux2
Type "help", "copyright", "credits" or "license" for more information.
import sys
def hello(a, b):
print 'hello and that\'s your sum: {0}'.format(a + b)
if __name__ == '__main__':
hello(int(sys.argv[1]), int(sys.argv[2]))
Moreover see @thibauts answer about how to call python script.
I solved it doing adb reverse tcp:8081 tcp:8081
and then reload
on my phone.
As the author of the linked webpage in the popular answer, I would like to add my last version of this simple helper function. It is much more solid.
I use json_encode()
to make a check for if the variable type is not necessary and also add a buffer to solve problems with frameworks. There not have a solid return or excessive usage of header()
.
/**
* Simple helper to debug to the console
*
* @param $data object, array, string $data
* @param $context string Optional a description.
*
* @return string
*/
function debug_to_console($data, $context = 'Debug in Console') {
// Buffering to solve problems frameworks, like header() in this and not a solid return.
ob_start();
$output = 'console.info(\'' . $context . ':\');';
$output .= 'console.log(' . json_encode($data) . ');';
$output = sprintf('<script>%s</script>', $output);
echo $output;
}
// $data is the example variable, object; here an array.
$data = [ 'foo' => 'bar' ];
debug_to_console($data);`
Also a simple example as an image to understand it much easier:
ngModel
The ngModel directive binds an input,select, textarea (or custom form control) to a property on the scope.
This directive executes at priority level 1.
Example Plunker
JAVASCRIPT
angular.module('inputExample', [])
.controller('ExampleController', ['$scope', function($scope) {
$scope.val = '1';
}]);
CSS
.my-input {
-webkit-transition:all linear 0.5s;
transition:all linear 0.5s;
background: transparent;
}
.my-input.ng-invalid {
color:white;
background: red;
}
HTML
<p id="inputDescription">
Update input to see transitions when valid/invalid.
Integer is a valid value.
</p>
<form name="testForm" ng-controller="ExampleController">
<input ng-model="val" ng-pattern="/^\d+$/" name="anim" class="my-input"
aria-describedby="inputDescription" />
</form>
ngModel is responsible for:
ngBind
The ngBind attribute tells Angular to replace the text content of the specified HTML element with the value of a given expression, and to update the text content when the value of that expression changes.
This directive executes at priority level 0.
Example Plunker
JAVASCRIPT
angular.module('bindExample', [])
.controller('ExampleController', ['$scope', function($scope) {
$scope.name = 'Whirled';
}]);
HTML
<div ng-controller="ExampleController">
<label>Enter name: <input type="text" ng-model="name"></label><br>
Hello <span ng-bind="name"></span>!
</div>
ngBind is responsible for:
It's easy, use a solid shadow with 0 offset:
#foo {
border-radius: 1px;
box-shadow: 0px 0px 0px 8px rgba(0,0,0,0.3);
}
Also, if you set a border-radius to the element, it gives you pretty rounded borders
import java.sql.Timestamp;
import java.text.SimpleDateFormat;
import java.util.Date;
public class DateTest {
public static void main(String[] args) {
Timestamp timestamp = new Timestamp(System.currentTimeMillis());
Date date = new Date(timestamp.getTime());
// S is the millisecond
SimpleDateFormat simpleDateFormat = new SimpleDateFormat("MM/dd/yyyy' 'HH:mm:ss:S");
System.out.println(simpleDateFormat.format(timestamp));
System.out.println(simpleDateFormat.format(date));
}
}
You can escape (this is how this principle is called) the double quotes by prefixing them with another double quote. You can put them in a string as follows:
Dim MyVar as string = "some text ""hello"" "
This will give the MyVar
variable a value of some text "hello"
.
Ensure right margin is not exceeded
File > Settings > Editor > Code Style > Java > Wrapping and Braces > Ensure right margin is not exceeded
Reformat code
Code > Reformat code...
or press Ctrl + Alt + L
If you have something like this:
thisLineIsVeryLongAndWillBeChanged(); // comment
it will be converted to
thisLineIsVeryLongAndWillBeChanged();
// comment
instead of
// comment
thisLineIsVeryLongAndWillBeChanged();
This is why I select pieces of code before reformatting if the code looks like in the previous example.
IntelliJ IDEA 14: File > Settings > Editor > Code Style > Wrap when typing reaches right margin
IntelliJ IDEA 15, 2016 & 2017: File > Settings > Editor > Code Style > Wrap on typing
Use VerticalScrollBar
with the TextBlock
control in WPF. In your code behind, add the following code:
In the constructor, define an event handler for the scrollbar:
scrollBar1.ValueChanged += new RoutedPropertyChangedEventHandler<double>(scrollBar1_ValueChanged);
scrollBar1.Minimum = 0;
scrollBar1.Maximum = 1;
scrollBar1.SmallChange = 0.1;
Then in the event handler, add:
void scrollBar1_ValueChanged(object sender, RoutedPropertyChangedEventArgs<double> e)
{
FteHolderText.Text = scrollBar1.Value.ToString();
}
Here is the original snippet from my code... make necessary changes.. :)
public NewProjectPlan()
{
InitializeComponent();
this.Loaded += new RoutedEventHandler(NewProjectPlan_Loaded);
scrollBar1.ValueChanged += new RoutedPropertyChangedEventHandler<double>(scrollBar1_ValueChanged);
scrollBar1.Minimum = 0;
scrollBar1.Maximum = 1;
scrollBar1.SmallChange = 0.1;
// etc...
}
void scrollBar1_ValueChanged(object sender, RoutedPropertyChangedEventArgs<double> e)
{
FteHolderText.Text = scrollBar1.Value.ToString();
}
You can get a list of the first element in each tuple using a list comprehension:
>>> my_tuples = [(1, 2, 3), ('a', 'b', 'c', 'd', 'e'), (True, False), 'qwerty']
>>> first_elts = [x[0] for x in my_tuples]
>>> first_elts
[1, 'a', True, 'q']
I use this:
basename $(git remote get-url origin) .git
Which returns something like gitRepo
. (Remove the .git
at the end of the command to return something like gitRepo.git
.)
(Note: It requires Git version 2.7.0 or later)
To start Jupyter Notebook in Windows:
jupyter notebook
You can further navigate from the UI of Jupyter notebook after you launch it (if you are not directly launching the right file.)
OR you can directly drag and drop the file to the cmd, to open the file.
C:\Users\kushalatreya>jupyter notebook "C:\Users\kushalatreya\Downloads\Material\PythonCourseFolder\PythonCourse-DataTypes.ipynb"
The correct way of building client/server Microsoft Access applications where the data is stored in a RDBMS is to use the Linked Table method. This ensures Data Isolation and Concurrency is maintained between the Microsoft Access client application and the RDBMS data with no additional and unnecessary programming logic and code which makes maintenance more difficult, and adds to development time.
see: http://claysql.blogspot.com/2014/08/normal-0-false-false-false-en-us-x-none.html
My way of implementation in Swift...
ConfigurationManager.swift
import Foundation
let ConfigurationManagerSharedInstance = ConfigurationManager()
class ConfigurationManager : NSObject {
var globalDic: NSMutableDictionary = NSMutableDictionary()
class var sharedInstance:ConfigurationManager {
return ConfigurationManagerSharedInstance
}
init() {
super.init()
println ("Config Init been Initiated, this will be called only onece irrespective of many calls")
}
Access the globalDic from any screen of the application by the below.
Read:
println(ConfigurationManager.sharedInstance.globalDic)
Write:
ConfigurationManager.sharedInstance.globalDic = tmpDic // tmpDict is any value that to be shared among the application
You can use this npm package. It handles everything and has options for static and dynamic classes based on a variable or a function.
// Support for string arguments
getClassNames('class1', 'class2');
// support for Object
getClassNames({class1: true, class2 : false});
// support for all type of data
getClassNames('class1', 'class2', null, undefined, 3, ['class3', 'class4'], {
class5 : function() { return false; },
class6 : function() { return true; }
});
<div className={getClassNames('show', {class1: true, class2 : false})} /> // "show class1"
You cannot prevent people from copying text from your page. If you are trying to satisfy a "requirement" this may work for you:
<body oncopy="return false" oncut="return false" onpaste="return false">
How to disable Ctrl C/V using javascript for both internet explorer and firefox browsers
A more advanced aproach:
How to detect Ctrl+V, Ctrl+C using JavaScript?
Edit: I just want to emphasise that disabling copy/paste is annoying, won't prevent copying and is 99% likely a bad idea.
I would like to share my way of starting chrome - specificaly youtube tv - in full screen mode automatically, without the need of pressing F11. kiosk/fullscreen options doesn't seem to work (Version 41.0.2272.89). It has some steps though...
Now, whenever you click on this shortcut, chrome will start in fullscreen and at the page you defined. I guess you can put this shortcut in startup folder to run when windows starts, but I haven't tried it.
there is an important difference between delete and splice:
ORIGINAL ARRAY:
[<1 empty item>, 'one',<3 empty items>, 'five', <3 empty items>,'nine']
AFTER SPLICE (array.splice(1,1)):
[ <4 empty items>, 'five', <3 empty items>, 'nine' ]
AFTER DELETE (delete array[1]):
[ <5 empty items>, 'five', <3 empty items>, 'nine' ]
A little late to the party, but...
The other answers do a good job of explaining what effect the [ChildActionOnly]
attribute has. However, in most examples, I kept asking myself why I'd create a new action method just to render a partial view, within another view, when you could simply render @Html.Partial("_MyParialView")
directly in the view. It seemed like an unnecessary layer. However, as I investigated, I found that one benefit is that the child action can create a different model and pass that to the partial view. The model needed for the partial might not be available in the model of the view in which the partial view is being rendered. Instead of modifying the model structure to get the necessary objects/properties there just to render the partial view, you can call the child action and have the action method take care of creating the model needed for the partial view.
This can come in handy, for example, in _Layout.cshtml
. If you have a few properties common to all pages, one way to accomplish this is use a base view model and have all other view models inherit from it. Then, the _Layout
can use the base view model and the common properties. The downside (which is subjective) is that all view models must inherit from the base view model to guarantee that those common properties are always available. The alternative is to render @Html.Action
in those common places. The action method would create a separate model needed for the partial view common to all pages, which would not impact the model for the "main" view. In this alternative, the _Layout
page need not have a model. It follows that all other view models need not inherit from any base view model.
I'm sure there are other reasons to use the [ChildActionOnly]
attribute, but this seems like a good one to me, so I thought I'd share.
You can try this
$('div.easy_editor').css({'border-width':'9px', 'border-style':'solid', 'border-color':'red'});
The $('div.easy_editor')
refers to a collection of all divs that have the class easy editor already. There is no need to use each() unless there was some function that you wanted to run on each. The css() method actually applies to all the divs you find.
And just in case someone here is also not paying attention (like me):
For Microsoft SQL Server 2012, in the options dialogue box, there is a sneaky little check box that APPARENTLY hides all other setting. Although I got to say that I have missed that little monster all this time!!!
After that, you may proceed with the steps, designer, uncheck prevent saving blah blah blah...
an alternative could be (for numbers!!!)
Literally spoken:
array = -Arrays.sort(-array)
I've searched solution to similar problem and maybe my way will help You and anybody who face with it.
I used SelectedValuePath="id"
in XAML DataGrid definition, and programaticaly only thing I have to do is set DataGrid.SelectedValue
to desired value.
I know this solution has pros and cons, but in specific case is fast and easy.
Best regards
Marcin
Another alternative:
myPlanetsList.Select(i => i.Moons).Sum();
const url = 'data:image/png;base6....';
fetch(url)
.then(res => res.blob())
.then(blob => {
const file = new File([blob], "File name",{ type: "image/png" })
})
Base64 String -> Blob -> File.
Complile a Java file to generate a class:
javac filename.java
Execute the generated class:
java filename
There are some problems to import functions from other file.
First: You needn't to do this file executable. Better not to do so!
just add
. file
to import all functions. And all of them will be as if they are defined in your file.
Second: You may be define the function with the same name. It will be overwritten. It's bad. You may declare like that
declare -f new_function_name=old_function_name
and only after that do import.
So you may call old function by new name.
Third: You may import only full list of functions defined in file.
If some not needed you may unset them. But if you rewrite your functions after unset they will be lost. But if you set reference to it as described above you may restore after unset with the same name.
Finally In common procedure of import is dangerous and not so simple. Be careful! You may write script to do this more easier and safe.
If you use only part of functions(not all) better split them in different files. Unfortunately this technique not made well in bash. In python for example and some other script languages it's easy and safe. Possible to make partial import only needed functions with its own names. We all want that in next bush versions will be done the same functionality. But now We must write many additional cod so as to do what you want.
(1) SQLite has a built in rowid
pseudo-column so this works:
sqldf("select min(rowid) rowid, id, string
from test
group by id")
giving:
rowid id string
1 1 1 A
2 3 2 B
3 5 3 C
4 7 4 D
5 9 5 E
(2) Also sqldf
itself has a row.names=
argument:
sqldf("select min(cast(row_names as real)) row_names, id, string
from test
group by id", row.names = TRUE)
giving:
id string
1 1 A
3 2 B
5 3 C
7 4 D
9 5 E
(3) A third alternative which mixes the elements of the above two might be even better:
sqldf("select min(rowid) row_names, id, string
from test
group by id", row.names = TRUE)
giving:
id string
1 1 A
3 2 B
5 3 C
7 4 D
9 5 E
Note that all three of these rely on a SQLite extension to SQL where the use of min
or max
is guaranteed to result in the other columns being chosen from the same row. (In other SQL-based databases that may not be guaranteed.)
I stumbled upon this thread as I had a similar requirement where I needed to set (or update) an Environment Variable (permanently).
So I looked in to - How to set an environment variable permanently from Command Prompt and it was very simple!
setx JAVA_LOC C:/Java/JDK
Then I just implemented the same in my code Here's what I used (suppose - JAVA_LOC is the env. variable name)
String cmdCommand = "setx JAVA_LOC " + "C:/Java/JDK";
ProcessBuilder processBuilder = new ProcessBuilder();
processBuilder.command("cmd.exe", "/c", cmdCommand);
processBuilder.start();
ProcessBuilder fires-up a cmd.exe and passes the command that you want. The environment variable is retained even if you kill JVM/reboot the system as it has no relation with the JVM/Program's lifecycle.
Bit late response to this question, however I do have something to add that might be useful for others.
If you make use of an iFrame and set the pdf file path to the src, it will load zoomed out to 100%, which the equivalence of FitH
You want to look at the nodes in
/sys/class/net/
I experimented with mine:
Wire Plugged in:
eth0/carrier:1
eth0/operstate:unknown
Wire Removed:
eth0/carrier:0
eth0/operstate:down
Wire Plugged in Again:
eth0/carrier:1
eth0/operstate:up
Side Trick: harvesting all properties at once the easy way:
grep "" eth0/*
This forms a nice list of key:value
pairs.
Actually you can make it work even with an ORDER BY.
Just needs some trickery in the order by statement - we use a case statement and replace the header value with some other value that is guaranteed to sort first in the list (obviously this is dependant on the type of field and whether you are sorting ASC or DESC)
Let's say you have three fields, name (varchar), is_active (bool), date_something_happens (date), and you want to sort the second two descending:
select
'name'
, 'is_active' as is_active
, date_something_happens as 'date_something_happens'
union all
select name, is_active, date_something_happens
from
my_table
order by
(case is_active when 'is_active' then 0 else is_active end) desc
, (case date when 'date' then '9999-12-30' else date end) desc
Your resource methods won't get hit, so their headers will never get set. The reason is that there is what's called a preflight request before the actual request, which is an OPTIONS
request. So the error comes from the fact that the preflight request doesn't produce the necessary headers.
For RESTeasy, you should use CorsFilter
. You can see here for some example how to configure it. This filter will handle the preflight request. So you can remove all those headers you have in your resource methods.
See Also:
maybe this can help:
SELECT constraint_name, constraint_type, column_name
from user_constraints natural join user_cons_columns
where table_name = "my_table_name";
cheers
I wrote a fast bitcount macro for RISC machines in about 1990. It does not use advanced arithmetic (multiplication, division, %), memory fetches (way too slow), branches (way too slow), but it does assume the CPU has a 32-bit barrel shifter (in other words, >> 1 and >> 32 take the same amount of cycles.) It assumes that small constants (such as 6, 12, 24) cost nothing to load into the registers, or are stored in temporaries and reused over and over again.
With these assumptions, it counts 32 bits in about 16 cycles/instructions on most RISC machines. Note that 15 instructions/cycles is close to a lower bound on the number of cycles or instructions, because it seems to take at least 3 instructions (mask, shift, operator) to cut the number of addends in half, so log_2(32) = 5, 5 x 3 = 15 instructions is a quasi-lowerbound.
#define BitCount(X,Y) \
Y = X - ((X >> 1) & 033333333333) - ((X >> 2) & 011111111111); \
Y = ((Y + (Y >> 3)) & 030707070707); \
Y = (Y + (Y >> 6)); \
Y = (Y + (Y >> 12) + (Y >> 24)) & 077;
Here is a secret to the first and most complex step:
input output
AB CD Note
00 00 = AB
01 01 = AB
10 01 = AB - (A >> 1) & 0x1
11 10 = AB - (A >> 1) & 0x1
so if I take the 1st column (A) above, shift it right 1 bit, and subtract it from AB, I get the output (CD). The extension to 3 bits is similar; you can check it with an 8-row boolean table like mine above if you wish.
This will also work:
<Hyperlink Command="{Binding RelativeSource={RelativeSource AncestorType=ItemsControl},
Path=DataContext.AllowItemCommand}" />
ListView
will inherit its DataContext
from Window
, so it's available at this point, too.
And since ListView
, just like similar controls (e. g. Gridview
, ListBox
, etc.), is a subclass of ItemsControl
, the Binding
for such controls will work perfectly.
Simplest HTML + CSS accordion, with just CSS resize.
div {
resize: vertical;
overflow: auto;
border: 1px solid
}
.menu {
display: grid
/* Try height: 100% or height: 100vh */
}
_x000D_
<div class="menu">
<div>
Hello, World!
</div>
<div>
Hello, World!
</div>
<div>
Hello, World!
</div>
</div>
_x000D_
Simplest HTML + CSS vertical resizable panes:
div {
resize: horizontal;
overflow: auto;
border: 1px solid;
display: inline-flex;
height: 90vh
}
_x000D_
<div>
Hello, World!
</div>
<div>
Hello, World!
</div>
_x000D_
The plain HTML, details element!.
<details>
<summary>Morning</summary>
<p>Hello, World!</p>
</details>
<details>
<summary>Evening</summary>
<p>How sweat?</p>
</details>
_x000D_
Simplest HTML + CSS topbar foldable menu
div{
display: flex
}
summary,p{
margin: 0px 0 -1px 0px;
padding: 0 0 0 0.5rem;
border: 1px black solid
}
summary {
padding: 0 1rem 0 0.5rem
}
_x000D_
<div>
<details>
<summary>FILE</summary>
<p>Save</p>
<p>Save as</p>
</details>
<details>
<summary>EDIT</summary>
<p>Pump</p>
<p>Transfer</p>
<p>Review</p>
<p>Compile</p>
</details>
<details>
<summary>PREFERENCES</summary>
<p>How sweat?</p>
<p>Powered by HTML</p>
</details>
</div>
_x000D_
Fixed bottom menu bar, unfolding upward.
div{
display: flex;
position: fixed;
bottom: 0;
transform: rotate(180deg)
}
summary,p{
margin: 0px 0 -1px 0px;
padding: 0 0 0 0.5rem;
border: 1px black solid;
transform: rotate(180deg)
}
summary {
padding: 0 1rem 0 0.5rem;
}
_x000D_
<div>
<details>
<summary>FILE</summary>
<p>Save</p>
<p>Save as</p>
</details>
<details>
<summary>EDIT</summary>
<p>Pump</p>
<p>Transfer</p>
<p>Review</p>
<p>Compile</p>
</details>
<details>
<summary>PREF</summary>
<p>How?</p>
<p>Power</p>
</details>
</div>
_x000D_
Simplest resizable pane, using JavaScript.
let ismdwn = 0
rpanrResize.addEventListener('mousedown', mD)
function mD(event) {
ismdwn = 1
document.body.addEventListener('mousemove', mV)
document.body.addEventListener('mouseup', end)
}
function mV(event) {
if (ismdwn === 1) {
pan1.style.flexBasis = event.clientX + "px"
} else {
end()
}
}
const end = (e) => {
ismdwn = 0
document.body.removeEventListener('mouseup', end)
rpanrResize.removeEventListener('mousemove', mV)
}
_x000D_
div {
display: flex;
border: 1px black solid;
width: 100%;
height: 200px;
}
#pan1 {
flex-grow: 1;
flex-shrink: 0;
flex-basis: 50%; // initial status
}
#pan2 {
flex-grow: 0;
flex-shrink: 1;
overflow-x: auto;
}
#rpanrResize {
flex-grow: 0;
flex-shrink: 0;
background: #1b1b51;
width: 0.2rem;
cursor: col-resize;
margin: 0 0 0 auto;
}
_x000D_
<div>
<div id="pan1">MENU</div>
<div id="rpanrResize"> </div>
<div id="pan2">BODY</div>
</div>
_x000D_
This will work for sure I guess...
// Declare
Menu menu;
MenuItem menuDoneItem;
// Then in your onCreateOptionMenu() method write the following...
@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
this.menu=menu;
inflater.inflate(R.menu.secutity, menu);
}
// In your onOptionItemSelected() method write the following...
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.done_item:
this.menuDoneItem=item;
someOperation();
return true;
default:
return super.onOptionsItemSelected(item);
}
}
// Now Making invisible any menu item...
public void menuInvisible(){
setHasOptionsMenu(true);// Take part in populating the action bar menu
menuDoneItem=(MenuItem)menu.findItem(R.id.done_item);
menuRefresh.setVisible(false); // make true to make the menu item visible.
}
//Use the above method whenever you need to make your menu item visible or invisiable
You can also refer this link for more details, it is a very useful one.
Why the loop?
You could simply do this:
{% if 'priority' in data %}
<p>Priority: {{ data['priority'] }}</p>
{% endif %}
When you were originally doing your string comparison, you should have used ==
instead.
You could use @> operator to do this something like
SELECT info->>'name'
FROM rabbits
WHERE info->'food' @> '"carrots"';
The answer given by Simon works fine for me but you have to do it in the right sequence: First you have to be in the server that you want to insert data into which is [DATABASE.WINDOWS.NET].[basecampdev] in your case.
You can try to see if you can select some data out of the Invoice table to make sure you have access.
Select top 10 * from [DATABASE.WINDOWS.NET].[basecampdev].[dbo].[invoice]
Secondly, execute the query given by Simon in order to link to a different server. This time use the other server:
EXEC sp_addlinkedserver [BC1-PC]; -- this will create a link tempdb that you can access from where you are
GO
USE tempdb;
GO
CREATE SYNONYM MyInvoice FOR
[BC1-PC].testdabse.dbo.invoice; -- Make a copy of the table and data that you can use
GO
Now just do your insert statement.
INSERT INTO [DATABASE.WINDOWS.NET].[basecampdev].[dbo].[invoice]
([InvoiceNumber]
,[TotalAmount]
,[IsActive]
,[CreatedBy]
,[UpdatedBy]
,[CreatedDate]
,[UpdatedDate]
,[Remarks])
SELECT [InvoiceNumber]
,[TotalAmount]
,[IsActive]
,[CreatedBy]
,[UpdatedBy]
,[CreatedDate]
,[UpdatedDate]
,[Remarks] FROM MyInvoice
Hope this helps!
@WilliamJockusch, if I understood correctly your concern, it's not possible (from a mathematical point of view) to always identify an infinite recursion as it would mean to solve the Halting problem. To solve it you'd need a Super-recursive algorithm (like Trial-and-error predicates for example) or a machine that can hypercompute (an example is explained in the following section - available as preview - of this book).
From a practical point of view, you'd have to know:
Keep in mind that, with the current machines, this data is extremely mutable due to multitasking and I haven't heard of a software that does the task.
Let me know if something is unclear.
From man curl
:
-x, --proxy <[protocol://][user:password@]proxyhost[:port]>
Use the specified HTTP proxy.
If the port number is not specified, it is assumed at port 1080.
General way:
export http_proxy=http://your.proxy.server:port/
Then you can connect through proxy from (many) application.
And, as per comment below, for https:
export https_proxy=https://your.proxy.server:port/
Note: Posted this answer because OP later stated in comments that they need to select the last two elements, not just the second to last one.
The :nth-child
CSS3 selector is in fact more capable than you ever imagined!
For example, this will select the last 2 elements of #container
:
#container :nth-last-child(-n+2) {}
But this is just the beginning of a beautiful friendship.
#container :nth-last-child(-n+2) {
background-color: cyan;
}
_x000D_
<div id="container">
<div>a</div>
<div>b</div>
<div>SELECT THIS</div>
<div>SELECT THIS</div>
</div>
_x000D_
White space is important, expr
expects its operands and operators as separate arguments. You also have to capture the output. Like this:
COUNT=$(expr $FIRSTV - $SECONDV)
but it's more common to use the builtin arithmetic expansion:
COUNT=$((FIRSTV - SECONDV))
You can use transitions to delay the :hover
effect you want, if the effect is CSS-based.
For example
div{
transition: 0s background-color;
}
div:hover{
background-color:red;
transition-delay:1s;
}
this will delay applying the the hover effects (background-color
in this case) for one second.
Demo of delay on both hover on and off:
div{_x000D_
display:inline-block;_x000D_
padding:5px;_x000D_
margin:10px;_x000D_
border:1px solid #ccc;_x000D_
transition: 0s background-color;_x000D_
transition-delay:1s;_x000D_
}_x000D_
div:hover{_x000D_
background-color:red;_x000D_
}
_x000D_
<div>delayed hover</div>
_x000D_
Demo of delay only on hover on:
div{_x000D_
display:inline-block;_x000D_
padding:5px;_x000D_
margin:10px;_x000D_
border:1px solid #ccc;_x000D_
transition: 0s background-color;_x000D_
}_x000D_
div:hover{_x000D_
background-color:red; _x000D_
transition-delay:1s;_x000D_
}
_x000D_
<div>delayed hover</div>
_x000D_
Vendor Specific Extentions for Transitions and W3C CSS3 transitions
Just pass appropriate Comparator
to the constructor:
PriorityQueue(int initialCapacity, Comparator<? super E> comparator)
The only difference between offer
and add
is the interface they belong to. offer
belongs to Queue<E>
, whereas add
is originally seen in Collection<E>
interface. Apart from that both methods do exactly the same thing - insert the specified element into priority queue.
As @Egon mentioned above, there is no real folder management in BLOB storage.
You can achieve some features of a file system using '/' in the file name, but this has many limitations (for example, what happen if you need to rename a "folder"?).
As a general rule, I would keep my files as flat as possible in a container, and have my application manage whatever structure I want to expose to the end users (for example manage a nested folder structure in my database, have a record for each file, referencing the BLOB using container-name and file-name).
You probably did some history rewriting? Your local branch diverged from the one on the server. Run this command to get a better understanding of what happened:
gitk HEAD @{u}
I would strongly recommend you try to understand where this error is coming from. To fix it, simply run:
git push -f
The -f
makes this a “forced push” and overwrites the branch on the server. That is very dangerous when you are working in team. But
since you are on your own and sure that your local state is correct
this should be fine. You risk losing commit history if that is not the case.
I found the answer:
$mail->AddEmbeddedImage('img/2u_cs_mini.jpg', 'logo_2u');
and on the <img>
tag put src='cid:logo_2u'
I think a lot of times when you see this code, it's from people who are in the habit of event handlers for forms, buttons, inputs, and things of that sort.
Basically, when you have something like:
<form onsubmit="return callSomeFunction();"></form>
or
<a href="#" onclick="return callSomeFunction();"></a>`
and callSomeFunction()
returns true, then the form
or a
will submit, otherwise it won't.
Other more obvious general purposes for returning true or false as a result of a function are because they are expected to return a boolean.
You shouldn't edit any code manually jetify should do this job for you, if you are running/building from cli using react-native
you dont' need to do anything but if you are running/building Andriod studio you need to run jetify as pre-build, here is how can you automate this:
1- From the above menu go to edit configurations:
2- Add the bottom of the screen you will find before launch click on the plus and choose Run External Tool
2- Fill the following information, note that the working directory is your project root directory (not the android directory):
3- Make sure this run before anything else, in the end, your configuration should look something like this:
Not sure if this will benefit anybody, but if you are using Azure CloudShell PowerShell you can just type:
code file.txt
And Visual Studio code will popup with the file to be edit, pretty great.
If you are using Entity Framework 5 < you can use DbGeography
. Example from MSDN:
public class University
{
public int UniversityID { get; set; }
public string Name { get; set; }
public DbGeography Location { get; set; }
}
public partial class UniversityContext : DbContext
{
public DbSet<University> Universities { get; set; }
}
using (var context = new UniversityContext ())
{
context.Universities.Add(new University()
{
Name = "Graphic Design Institute",
Location = DbGeography.FromText("POINT(-122.336106 47.605049)"),
});
context. Universities.Add(new University()
{
Name = "School of Fine Art",
Location = DbGeography.FromText("POINT(-122.335197 47.646711)"),
});
context.SaveChanges();
var myLocation = DbGeography.FromText("POINT(-122.296623 47.640405)");
var university = (from u in context.Universities
orderby u.Location.Distance(myLocation)
select u).FirstOrDefault();
Console.WriteLine(
"The closest University to you is: {0}.",
university.Name);
}
https://msdn.microsoft.com/en-us/library/hh859721(v=vs.113).aspx
Something I struggled with then I started using DbGeography
was the coordinateSystemId
. See the answer below for an excellent explanation and source for the code below.
public class GeoHelper
{
public const int SridGoogleMaps = 4326;
public const int SridCustomMap = 3857;
public static DbGeography FromLatLng(double lat, double lng)
{
return DbGeography.PointFromText(
"POINT("
+ lng.ToString() + " "
+ lat.ToString() + ")",
SridGoogleMaps);
}
}
You can just compile (start debugging) your work with Ctrl+F5.
Try it. I always do it and the console shows me my results open on it. No additional code is needed.
Use Son Of Strike which has a command ObjSize
.
Note that actual memory consumed is always larger than ObjSize
reports due to a synkblk
which resides directly before the object data.
Read more about both here MSDN Magazine Issue 2005 May - Drill Into .NET Framework Internals to See How the CLR Creates Runtime Objects.
As explained in Python's super() considered super, one way is to have class eat the arguments it requires, and pass the rest on. Thus, when the call-chain reaches object
, all arguments have been eaten, and object.__init__
will be called without arguments (as it expects). So your code should look like this:
class A(object):
def __init__(self, *args, **kwargs):
print "A"
super(A, self).__init__(*args, **kwargs)
class B(object):
def __init__(self, *args, **kwargs):
print "B"
super(B, self).__init__(*args, **kwargs)
class C(A):
def __init__(self, arg, *args, **kwargs):
print "C","arg=",arg
super(C, self).__init__(*args, **kwargs)
class D(B):
def __init__(self, arg, *args, **kwargs):
print "D", "arg=",arg
super(D, self).__init__(*args, **kwargs)
class E(C,D):
def __init__(self, arg, *args, **kwargs):
print "E", "arg=",arg
super(E, self).__init__(*args, **kwargs)
print "MRO:", [x.__name__ for x in E.__mro__]
E(10, 20, 30)
Not tested, but probably something like if(preg_match("/^[0-9,]+$/", $a)) $a = str_replace(...)
Do it the other way around:
$a = "1,435";
$b = str_replace( ',', '', $a );
if( is_numeric( $b ) ) {
$a = $b;
}
The easiest would be:
$var = intval(preg_replace('/[^\d.]/', '', $var));
or if you need float:
$var = floatval(preg_replace('/[^\d.]/', '', $var));
You can solve this problem by these Commands:
First:
sudo gem install cocoapods
Desp: type user mac password now your cocoapods will be replace with a stable version.
You can find out where the CocoaPods gem is installed with:
gem which cocoapods
if you have cloned the repo then type this command:
pod repo update
close your xcode and run this command
Pod install
Create Table as select (CTAS) is possible in Hive.
You can try out below command:
CREATE TABLE new_test
row format delimited
fields terminated by '|'
STORED AS RCFile
AS select * from source where col=1
Create table like is also possible in Hive.
In my humble experience with postgres 9.6, cascade delete doesn't work in practice for tables that grow above a trivial size.
answering to your question:
How can I destroy or unset the value of the session?
I can help you by this:
$this->session->unset_userdata('some_name');
and for multiple data you can:
$array_items = array('username' => '', 'email' => '');
$this->session->unset_userdata($array_items);
and to destroy the session:
$this->session->sess_destroy();
Now for the on page change part (on the top of my mind):
you can set the config "anchor_class" of the paginator equal to the classname you want.
after that just check it with jquery onclick for that class which will send a head up to the controller function that will unset the user session.
If you want to run Java programs, but not develop them, download the Java Run-time Environment, or JRE. If you want to develop them, download the Java Development kit, or JDK
Let's called JDK is a kit, which include what are those things need to developed and run java applications.
JDK is given as development environment for building applications, component s and applets.
It contains everything you need to run Java applications in compiled form. You don't need any libraries and other stuffs. All things you need are compiled.
JRE is can not used for development, only used for run the applications.
copied from: https://android.stackexchange.com/questions/12962/flush-clear-dns-cache
Addresses are cached for 600 seconds (10 minutes) by default. Failed lookups are cached for 10 seconds. From everything I've seen, there's nothing built in to flush the cache. This is apparently a reported bug http://code.google.com/p/android/issues/detail?id=7904 in Android because of the way it stores DNS cache. Clearing the browser cache doesn't touch the DNS, the "hard reset" clears it.
Concerning trigonometric function like sin()
, cos()
,tan()
there has been no mention, after 5 years, of an important aspect of high quality trig functions: Range reduction.
An early step in any of these functions is to reduce the angle, in radians, to a range of a 2*p interval. But p is irrational so simple reductions like x = remainder(x, 2*M_PI)
introduce error as M_PI
, or machine pi, is an approximation of p. So, how to do x = remainder(x, 2*p)
?
Early libraries used extended precision or crafted programming to give quality results but still over a limited range of double
. When a large value was requested like sin(pow(2,30))
, the results were meaningless or 0.0
and maybe with an error flag set to something like TLOSS
total loss of precision or PLOSS
partial loss of precision.
Good range reduction of large values to an interval like -p to p is a challenging problem that rivals the challenges of the basic trig function, like sin()
, itself.
A good report is Argument reduction for huge arguments: Good to the last bit (1992). It covers the issue well: discusses the need and how things were on various platforms (SPARC, PC, HP, 30+ other) and provides a solution algorithm the gives quality results for all double
from -DBL_MAX
to DBL_MAX
.
If the original arguments are in degrees, yet may be of a large value, use fmod()
first for improved precision. A good fmod()
will introduce no error and so provide excellent range reduction.
// sin(degrees2radians(x))
sin(degrees2radians(fmod(x, 360.0))); // -360.0 < fmod(x,360) < +360.0
Various trig identities and remquo()
offer even more improvement. Sample: sind()
Try the below code snippet
<!doctype html>
<html>
<head>
<title>Audio</title>
</head>
<body>
<script>
function play() {
var audio = document.getElementById("audio");
audio.play();
}
</script>
<input type="button" value="PLAY" onclick="play()">
<audio id="audio" src="http://dev.interactive-creation-works.net/1/1.ogg"></audio>
</body>
</html>
#include <stdio.h>
#define BLUE(string) "\x1b[34m" string "\x1b[0m"
#define RED(string) "\x1b[31m" string "\x1b[0m"
int main(void)
{
printf("this is " RED("red") "!\n");
// a somewhat more complex ...
printf("this is " BLUE("%s") "!\n","blue");
return 0;
}
reading Wikipedia:
You can have a look at the EL (expression language) description here.
Both your code are correct, but I prefer the second one, as comparing a boolean to true
or false
is redundant.
For better readibility, you can also use the not
operator:
<c:if test="${not theBooleanVariable}">It's false!</c:if>
javap
to read the bytecodeThe javap
command takes class-names without the .class
extension. Try
javap -c ClassName
javap
will however not give you the implementations of the methods in java-syntax. It will at most give it to you in JVM bytecode format.
To actually decompile (i.e., do the reverse of javac
) you will have to use proper decompiler. See for instance the following related question:
I'm going to go against the grain here and state that the principle of separating content from layout (which would justify the answers that suggest using CSS) does not always apply to image height and width.
Each image has an innate, original height and width that can be derived from the image data. In the framework of content vs layout, I would say that this derived height and width information is content, not layout, and should therefore be rendered as HTML as element attributes.
This is much like the alt
text, which can also be said to be derived from the image. This also supports the idea that an arbitrary user agent (e.g. a speech browser) should have that information in order to relate it to the user. At the least, the aspect ratio could prove useful ("image has a width of 15 and a height of 200"). Such user agents wouldn't necessarily process any CSS.
The spec says that the width
and height
attributes can also be used to override the height and width conveyed in the actual image file. I am not suggesting they be used for this. To override height and width, I believe CSS (inline, embedded or external) is the best approach.
So depending on what you want to do, you would specify one and/or the other. I think ideally, the original height and width would always be specified as HTML element attributes, while styling information should optionally be conveyed in CSS.
@gimel's answer is correct if you can guarantee the package hierarchy he mentions. If you can't -- if your real need is as you expressed it, exclusively tied to directories and without any necessary relationship to packaging -- then you need to work on __file__
to find out the parent directory (a couple of os.path.dirname
calls will do;-), then (if that directory is not already on sys.path
) prepend temporarily insert said dir at the very start of sys.path
, __import__
, remove said dir again -- messy work indeed, but, "when you must, you must" (and Pyhon strives to never stop the programmer from doing what must be done -- just like the ISO C standard says in the "Spirit of C" section in its preface!-).
Here is an example that may work for you:
import sys
import os.path
sys.path.append(
os.path.abspath(os.path.join(os.path.dirname(__file__), os.path.pardir)))
import module_in_parent_dir
add delim_whitespace=True
argument, it's faster than regex.
Just as an empty Request body is in keeping with the original purpose of a GET request and empty response body is in keeping with the original purpose of a PUT request.
Use of Lazy quantifiers ?
with no global flag is the answer.
Eg,
If you had global flag /g
then, it would have matched all the lowest length matches as below.
One thing to note is that not all libraries will use the same meaning for pi, of course, so it never hurts to know what you're using. For example, the symbolic math library Sympy's representation of pi is not the same as math and numpy:
import math
import numpy
import scipy
import sympy
print(math.pi == numpy.pi)
> True
print(math.pi == scipy.pi)
> True
print(math.pi == sympy.pi)
> False
I just tried in place merge algorithm for merge sort in JAVA by using the insertion sort algorithm, using following steps.
1) Two sorted arrays are available.
2) Compare the first values of each array; and place the smallest value into the first array.
3) Place the larger value into the second array by using insertion sort (traverse from left to right).
4) Then again compare the second value of first array and first value of second array, and do the same. But when swapping happens there is some clue on skip comparing the further items, but just swapping required.
I have made some optimization here; to keep lesser comparisons in insertion sort.
The only drawback i found with this solutions is it needs larger swapping of array elements in the second array.
e.g)
First___Array : 3, 7, 8, 9
Second Array : 1, 2, 4, 5
Then 7, 8, 9 makes the second array to swap(move left by one) all its elements by one each time to place himself in the last.
So the assumption here is swapping items is negligible compare to comparing of two items.
https://github.com/skanagavelu/algorithams/blob/master/src/sorting/MergeSort.java
package sorting;
import java.util.Arrays;
public class MergeSort {
public static void main(String[] args) {
int[] array = { 5, 6, 10, 3, 9, 2, 12, 1, 8, 7 };
mergeSort(array, 0, array.length -1);
System.out.println(Arrays.toString(array));
int[] array1 = {4, 7, 2};
System.out.println(Arrays.toString(array1));
mergeSort(array1, 0, array1.length -1);
System.out.println(Arrays.toString(array1));
System.out.println("\n\n");
int[] array2 = {4, 7, 9};
System.out.println(Arrays.toString(array2));
mergeSort(array2, 0, array2.length -1);
System.out.println(Arrays.toString(array2));
System.out.println("\n\n");
int[] array3 = {4, 7, 5};
System.out.println(Arrays.toString(array3));
mergeSort(array3, 0, array3.length -1);
System.out.println(Arrays.toString(array3));
System.out.println("\n\n");
int[] array4 = {7, 4, 2};
System.out.println(Arrays.toString(array4));
mergeSort(array4, 0, array4.length -1);
System.out.println(Arrays.toString(array4));
System.out.println("\n\n");
int[] array5 = {7, 4, 9};
System.out.println(Arrays.toString(array5));
mergeSort(array5, 0, array5.length -1);
System.out.println(Arrays.toString(array5));
System.out.println("\n\n");
int[] array6 = {7, 4, 5};
System.out.println(Arrays.toString(array6));
mergeSort(array6, 0, array6.length -1);
System.out.println(Arrays.toString(array6));
System.out.println("\n\n");
//Handling array of size two
int[] array7 = {7, 4};
System.out.println(Arrays.toString(array7));
mergeSort(array7, 0, array7.length -1);
System.out.println(Arrays.toString(array7));
System.out.println("\n\n");
int input1[] = {1};
int input2[] = {4,2};
int input3[] = {6,2,9};
int input4[] = {6,-1,10,4,11,14,19,12,18};
System.out.println(Arrays.toString(input1));
mergeSort(input1, 0, input1.length-1);
System.out.println(Arrays.toString(input1));
System.out.println("\n\n");
System.out.println(Arrays.toString(input2));
mergeSort(input2, 0, input2.length-1);
System.out.println(Arrays.toString(input2));
System.out.println("\n\n");
System.out.println(Arrays.toString(input3));
mergeSort(input3, 0, input3.length-1);
System.out.println(Arrays.toString(input3));
System.out.println("\n\n");
System.out.println(Arrays.toString(input4));
mergeSort(input4, 0, input4.length-1);
System.out.println(Arrays.toString(input4));
System.out.println("\n\n");
}
private static void mergeSort(int[] array, int p, int r) {
//Both below mid finding is fine.
int mid = (r - p)/2 + p;
int mid1 = (r + p)/2;
if(mid != mid1) {
System.out.println(" Mid is mismatching:" + mid + "/" + mid1+ " for p:"+p+" r:"+r);
}
if(p < r) {
mergeSort(array, p, mid);
mergeSort(array, mid+1, r);
// merge(array, p, mid, r);
inPlaceMerge(array, p, mid, r);
}
}
//Regular merge
private static void merge(int[] array, int p, int mid, int r) {
int lengthOfLeftArray = mid - p + 1; // This is important to add +1.
int lengthOfRightArray = r - mid;
int[] left = new int[lengthOfLeftArray];
int[] right = new int[lengthOfRightArray];
for(int i = p, j = 0; i <= mid; ){
left[j++] = array[i++];
}
for(int i = mid + 1, j = 0; i <= r; ){
right[j++] = array[i++];
}
int i = 0, j = 0;
for(; i < left.length && j < right.length; ) {
if(left[i] < right[j]){
array[p++] = left[i++];
} else {
array[p++] = right[j++];
}
}
while(j < right.length){
array[p++] = right[j++];
}
while(i < left.length){
array[p++] = left[i++];
}
}
//InPlaceMerge no extra array
private static void inPlaceMerge(int[] array, int p, int mid, int r) {
int secondArrayStart = mid+1;
int prevPlaced = mid+1;
int q = mid+1;
while(p < mid+1 && q <= r){
boolean swapped = false;
if(array[p] > array[q]) {
swap(array, p, q);
swapped = true;
}
if(q != secondArrayStart && array[p] > array[secondArrayStart]) {
swap(array, p, secondArrayStart);
swapped = true;
}
//Check swapped value is in right place of second sorted array
if(swapped && secondArrayStart+1 <= r && array[secondArrayStart+1] < array[secondArrayStart]) {
prevPlaced = placeInOrder(array, secondArrayStart, prevPlaced);
}
p++;
if(q < r) { //q+1 <= r) {
q++;
}
}
}
private static int placeInOrder(int[] array, int secondArrayStart, int prevPlaced) {
int i = secondArrayStart;
for(; i < array.length; i++) {
//Simply swap till the prevPlaced position
if(secondArrayStart < prevPlaced) {
swap(array, secondArrayStart, secondArrayStart+1);
secondArrayStart++;
continue;
}
if(array[i] < array[secondArrayStart]) {
swap(array, i, secondArrayStart);
secondArrayStart++;
} else if(i != secondArrayStart && array[i] > array[secondArrayStart]){
break;
}
}
return secondArrayStart;
}
private static void swap(int[] array, int m, int n){
int temp = array[m];
array[m] = array[n];
array[n] = temp;
}
}
"I understand both are server cluster management software."
This statement isn't entirely true. Kubernetes doesn't manage server clusters, it orchestrates containers such that they work together with minimal hassle and exposure. Kubernetes allows you to define parts of your application as "pods" (one or more containers) that are delivered by "deployments" or "daemon sets" (and a few others) and exposed to the outside world via services. However, Kubernetes doesn't manage the cluster itself (there are tools that can provision, configure and scale clusters for you, but those are not part of Kubernetes itself).
Mesos on the other hand comes closer to "cluster management" in that it can control what's running where, but not just in terms of scheduling containers. Mesos also manages standalone software running on the cluster servers. Even though it's mostly used as an alternative to Kubernetes, Mesos can easily work with Kubernetes as while the functionality overlaps in many areas, Mesos can do more (but on the overlapping parts Kubernetes tends to be better).
Something like:
$qb = $entityManager->createQueryBuilder();
$qb->select('count(account.id)');
$qb->from('ZaysoCoreBundle:Account','account');
$count = $qb->getQuery()->getSingleScalarResult();
Some folks feel that expressions are somehow better than just using straight DQL. One even went so far as to edit a four year old answer. I rolled his edit back. Go figure.
This worked for me, mobile listens to both, so prevent the one, which is the touch event. desktop only listen to mouse.
$btnUp.bind('touchstart mousedown',function(e){
e.preventDefault();
if (e.type === 'touchstart') {
return;
}
var val = _step( _options.arrowStep );
_evt('Button', [val, true]);
});
I found this to accomplish the entire solution. The answer above fails to remove the window from the task bar.
private void ImportStatusForm_Resize(object sender, EventArgs e)
{
if (this.WindowState == FormWindowState.Minimized)
{
notifyIcon.Visible = true;
notifyIcon.ShowBalloonTip(3000);
this.ShowInTaskbar = false;
}
}
private void notifyIcon_MouseDoubleClick(object sender, MouseEventArgs e)
{
this.WindowState = FormWindowState.Normal;
this.ShowInTaskbar = true;
notifyIcon.Visible = false;
}
Also it is good to set the following properties of the notify icon control using the forms designer.
this.notifyIcon.BalloonTipIcon = System.Windows.Forms.ToolTipIcon.Info; //Shows the info icon so the user doesn't think there is an error.
this.notifyIcon.BalloonTipText = "[Balloon Text when Minimized]";
this.notifyIcon.BalloonTipTitle = "[Balloon Title when Minimized]";
this.notifyIcon.Icon = ((System.Drawing.Icon)(resources.GetObject("notifyIcon.Icon"))); //The tray icon to use
this.notifyIcon.Text = "[Message shown when hovering over tray icon]";