Your target triplet indicates that your compiler is configured for the hard-float ABI. This means that the libgcc library will also be hardfp. The error message indicates that at least part of your system is using soft-float ABI.

If the compiler has multilib enabled (you can tell with -print-multi-lib) then you can use -mfloat-abi=softfp, but if not then that option won't help you much: gcc will happily generate softfp code, but then there'll be no compatible libgcc to link against.

Basically, hardfp and softfp are just not compatible. You need to get your whole system configured one way or the other.

EDIT: some distros are, or will be, "multiarch". If you have one of those then it's possible to install both ABIs at once, but that's done by doubling everything up -- the compatibility issues still exist.

AArch64 is the 64-bit state introduced in the Armv8-A architecture (https://en.wikipedia.org/wiki/ARM_architecture#ARMv8-A). The 32-bit state which is backwards compatible with Armv7-A and previous 32-bit Arm architectures is referred to as AArch32. Therefore the GNU triplet for the 64-bit ISA is aarch64. The Linux kernel community chose to call their port of the kernel to this architecture arm64 rather than aarch64, so that's where some of the arm64 usage comes from.

As far as I know the Apple backend for aarch64 was called arm64 whereas the LLVM community-developed backend was called aarch64 (as it is the canonical name for the 64-bit ISA) and later the two were merged and the backend now is called aarch64.

So AArch64 and ARM64 refer to the same thing.

Instead of having a fat APK file, I would like to use just the armeabi files and remove the armeabi-v7a folder.

The opposite is a much better strategy. If you have minSdkVersion to 14 and upload your apk to the play store, you'll notice you'll support the same number of devices whether you support armeabi or not. Therefore, there are no devices with Android 4 or higher which would benefit from armeabi at all.

This is probably why the Android NDK doesn't even support armeabi anymore as per revision r17b. [source]

SP is the stack register a shortcut for typing r13. LR is the link register a shortcut for r14. And PC is the program counter a shortcut for typing r15.

When you perform a call, called a branch link instruction, bl, the return address is placed in r14, the link register. the program counter pc is changed to the address you are branching to.

There are a few stack pointers in the traditional ARM cores (the cortex-m series being an exception) when you hit an interrupt for example you are using a different stack than when running in the foreground, you dont have to change your code just use sp or r13 as normal the hardware has done the switch for you and uses the correct one when it decodes the instructions.

The traditional ARM instruction set (not thumb) gives you the freedom to use the stack in a grows up from lower addresses to higher addresses or grows down from high address to low addresses. the compilers and most folks set the stack pointer high and have it grow down from high addresses to lower addresses. For example maybe you have ram from 0x20000000 to 0x20008000 you set your linker script to build your program to run/use 0x20000000 and set your stack pointer to 0x20008000 in your startup code, at least the system/user stack pointer, you have to divide up the memory for other stacks if you need/use them.

Stack is just memory. Processors normally have special memory read/write instructions that are PC based and some that are stack based. The stack ones at a minimum are usually named push and pop but dont have to be (as with the traditional arm instructions).

If you go to http://github.com/lsasim I created a teaching processor and have an assembly language tutorial. Somewhere in there I go through a discussion about stacks. It is NOT an arm processor but the story is the same it should translate directly to what you are trying to understand on the arm or most other processors.

Say for example you have 20 variables you need in your program but only 16 registers minus at least three of them (sp, lr, pc) that are special purpose. You are going to have to keep some of your variables in ram. Lets say that r5 holds a variable that you use often enough that you dont want to keep it in ram, but there is one section of code where you really need another register to do something and r5 is not being used, you can save r5 on the stack with minimal effort while you reuse r5 for something else, then later, easily, restore it.

Traditional (well not all the way back to the beginning) arm syntax:

...
stmdb r13!,{r5}
...temporarily use r5 for something else...
ldmia r13!,{r5}
...

stm is store multiple you can save more than one register at a time, up to all of them in one instruction.

db means decrement before, this is a downward moving stack from high addresses to lower addresses.

You can use r13 or sp here to indicate the stack pointer. This particular instruction is not limited to stack operations, can be used for other things.

The ! means update the r13 register with the new address after it completes, here again stm can be used for non-stack operations so you might not want to change the base address register, leave the ! off in that case.

Then in the brackets { } list the registers you want to save, comma separated.

ldmia is the reverse, ldm means load multiple. ia means increment after and the rest is the same as stm

So if your stack pointer were at 0x20008000 when you hit the stmdb instruction seeing as there is one 32 bit register in the list it will decrement before it uses it the value in r13 so 0x20007FFC then it writes r5 to 0x20007FFC in memory and saves the value 0x20007FFC in r13. Later, assuming you have no bugs when you get to the ldmia instruction r13 has 0x20007FFC in it there is a single register in the list r5. So it reads memory at 0x20007FFC puts that value in r5, ia means increment after so 0x20007FFC increments one register size to 0x20008000 and the ! means write that number to r13 to complete the instruction.

Why would you use the stack instead of just a fixed memory location? Well the beauty of the above is that r13 can be anywhere it could be 0x20007654 when you run that code or 0x20002000 or whatever and the code still functions, even better if you use that code in a loop or with recursion it works and for each level of recursion you go you save a new copy of r5, you might have 30 saved copies depending on where you are in that loop. and as it unrolls it puts all the copies back as desired. with a single fixed memory location that doesnt work. This translates directly to C code as an example:

void myfun ( void )
{
   int somedata;
}

In a C program like that the variable somedata lives on the stack, if you called myfun recursively you would have multiple copies of the value for somedata depending on how deep in the recursion. Also since that variable is only used within the function and is not needed elsewhere then you perhaps dont want to burn an amount of system memory for that variable for the life of the program you only want those bytes when in that function and free that memory when not in that function. that is what a stack is used for.

A global variable would not be found on the stack.

Going back...

Say you wanted to implement and call that function you would have some code/function you are in when you call the myfun function. The myfun function wants to use r5 and r6 when it is operating on something but it doesnt want to trash whatever someone called it was using r5 and r6 for so for the duration of myfun() you would want to save those registers on the stack. Likewise if you look into the branch link instruction (bl) and the link register lr (r14) there is only one link register, if you call a function from a function you will need to save the link register on each call otherwise you cant return.

...
bl myfun
    <--- the return from my fun returns here
...


myfun:
stmdb sp!,{r5,r6,lr}
sub sp,#4 <--- make room for the somedata variable
...
some code here that uses r5 and r6
bl more_fun <-- this modifies lr, if we didnt save lr we wouldnt be able to return from myfun
   <---- more_fun() returns here
...
add sp,#4 <-- take back the stack memory we allocated for the somedata variable
ldmia sp!,{r5,r6,lr}
mov pc,lr <---- return to whomever called myfun.

So hopefully you can see both the stack usage and link register. Other processors do the same kinds of things in a different way. for example some will put the return value on the stack and when you execute the return function it knows where to return to by pulling a value off of the stack. Compilers C/C++, etc will normally have a "calling convention" or application interface (ABI and EABI are names for the ones ARM has defined). if every function follows the calling convention, puts parameters it is passing to functions being called in the right registers or on the stack per the convention. And each function follows the rules as to what registers it does not have to preserve the contents of and what registers it has to preserve the contents of then you can have functions call functions call functions and do recursion and all kinds of things, so long as the stack does not go so deep that it runs into the memory used for globals and the heap and such, you can call functions and return from them all day long. The above implementation of myfun is very similar to what you would see a compiler produce.

ARM has many cores now and a few instruction sets the cortex-m series works a little differently as far as not having a bunch of modes and different stack pointers. And when executing thumb instructions in thumb mode you use the push and pop instructions which do not give you the freedom to use any register like stm it only uses r13 (sp) and you cannot save all the registers only a specific subset of them. the popular arm assemblers allow you to use

push {r5,r6}
...
pop {r5,r6}

in arm code as well as thumb code. For the arm code it encodes the proper stmdb and ldmia. (in thumb mode you also dont have the choice as to when and where you use db, decrement before, and ia, increment after).

No you absolutly do not have to use the same registers and you dont have to pair up the same number of registers.

push {r5,r6,r7}
...
pop {r2,r3}
...
pop {r1}

assuming there is no other stack pointer modifications in between those instructions if you remember the sp is going to be decremented 12 bytes for the push lets say from 0x1000 to 0x0FF4, r5 will be written to 0xFF4, r6 to 0xFF8 and r7 to 0xFFC the stack pointer will change to 0x0FF4. the first pop will take the value at 0x0FF4 and put that in r2 then the value at 0x0FF8 and put that in r3 the stack pointer gets the value 0x0FFC. later the last pop, the sp is 0x0FFC that is read and the value placed in r1, the stack pointer then gets the value 0x1000, where it started.

The ARM ARM, ARM Architectural Reference Manual (infocenter.arm.com, reference manuals, find the one for ARMv5 and download it, this is the traditional ARM ARM with ARM and thumb instructions) contains pseudo code for the ldm and stm ARM istructions for the complete picture as to how these are used. Likewise well the whole book is about the arm and how to program it. Up front the programmers model chapter walks you through all of the registers in all of the modes, etc.

If you are programming an ARM processor you should start by determining (the chip vendor should tell you, ARM does not make chips it makes cores that chip vendors put in their chips) exactly which core you have. Then go to the arm website and find the ARM ARM for that family and find the TRM (technical reference manual) for the specific core including revision if the vendor has supplied that (r2p0 means revision 2.0 (two point zero, 2p0)), even if there is a newer rev, use the manual that goes with the one the vendor used in their design. Not every core supports every instruction or mode the TRM tells you the modes and instructions supported the ARM ARM throws a blanket over the features for the whole family of processors that that core lives in. Note that the ARM7TDMI is an ARMv4 NOT an ARMv7 likewise the ARM9 is not an ARMv9. ARMvNUMBER is the family name ARM7, ARM11 without a v is the core name. The newer cores have names like Cortex and mpcore instead of the ARMNUMBER thing, which reduces confusion. Of course they had to add the confusion back by making an ARMv7-m (cortex-MNUMBER) and the ARMv7-a (Cortex-ANUMBER) which are very different families, one is for heavy loads, desktops, laptops, etc the other is for microcontrollers, clocks and blinking lights on a coffee maker and things like that. google beagleboard (Cortex-A) and the stm32 value line discovery board (Cortex-M) to get a feel for the differences. Or even the open-rd.org board which uses multiple cores at more than a gigahertz or the newer tegra 2 from nvidia, same deal super scaler, muti core, multi gigahertz. A cortex-m barely brakes the 100MHz barrier and has memory measured in kbytes although it probably runs of a battery for months if you wanted it to where a cortex-a not so much.

sorry for the very long post, hope it is useful.

some resources:

1. ELF for the ARM architecture
   http://infocenter.arm.com/help/topic/com.arm.doc.ihi0044d/IHI0044D_aaelf.pdf
2. ELF from wiki
   http://en.wikipedia.org/wiki/Executable_and_Linkable_Format

ELF format is generally the default output of compiling. if you use GNU tool chains, you can translate it to binary format by using objcopy, such as:

  arm-elf-objcopy -O binary [elf-input-file] [binary-output-file]

or using fromELF utility(built in most IDEs such as ADS though):

 fromelf -bin -o [binary-output-file] [elf-input-file]

try the following command:

which gcc-arm-linux-gnueabi

Its very likely the command is installed in /usr/bin.

I'm gonna try to write this as a tutorial for you so it becomes easy to follow.

NOTE: This tutorial only works for older raspbian images. For the newer Raspbian based on Debian Buster see the following how-to in this thread: https://stackoverflow.com/a/58559140/869402

Pre-requirements

Before you start you need to make sure the following is installed:

apt-get install git rsync cmake libc6-i386 lib32z1 lib32stdc++6

Let's cross compile a Pie!

Start with making a folder in your home directory called raspberrypi.

Go in to this folder and pull down the ENTIRE tools folder you mentioned above:

git clone git://github.com/raspberrypi/tools.git

You wanted to use the following of the 3 ones, gcc-linaro-arm-linux-gnueabihf-raspbian, if I did not read wrong.

Go into your home directory and add:

export PATH=$PATH:$HOME/raspberrypi/tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian/bin

to the end of the file named ~/.bashrc

Now you can either log out and log back in (i.e. restart your terminal session), or run . ~/.bashrc in your terminal to pick up the PATH addition in your current terminal session.

Now, verify that you can access the compiler arm-linux-gnueabihf-gcc -v. You should get something like this:

Using built-in specs.
COLLECT_GCC=arm-linux-gnueabihf-gcc
COLLECT_LTO_WRAPPER=/home/tudhalyas/raspberrypi/tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian/bin/../libexec/gcc/arm-linux-gnueabihf/4.7.2/lto-wrapper
Target: arm-linux-gnueabihf
Configured with: /cbuild/slaves/oort61/crosstool-ng/builds/arm-linux-gnueabihf-raspbian-linux/.b
 uild/src/gcc-linaro-4.7-2012.08/configure --build=i686-build_pc-linux-gnu --host=i686-build_pc-
 linux-gnu --target=arm-linux-gnueabihf --prefix=/cbuild/slaves/oort61/crosstool-ng/builds/arm-l
 inux-gnueabihf-raspbian-linux/install --with-sysroot=/cbuild/slaves/oort61/crosstool-ng/builds/
 arm-linux-gnueabihf-raspbian-linux/install/arm-linux-gnueabihf/libc --enable-languages=c,c++,fo
 rtran --disable-multilib --with-arch=armv6 --with-tune=arm1176jz-s --with-fpu=vfp --with-float=
 hard --with-pkgversion='crosstool-NG linaro-1.13.1+bzr2458 - Linaro GCC 2012.08' --with-bugurl=
 https://bugs.launchpad.net/gcc-linaro --enable-__cxa_atexit --enable-libmudflap --enable-libgom
 p --enable-libssp --with-gmp=/cbuild/slaves/oort61/crosstool-ng/builds/arm-linux-gnueabihf-rasp
 bian-linux/.build/arm-linux-gnueabihf/build/static --with-mpfr=/cbuild/slaves/oort61/crosstool-
 ng/builds/arm-linux-gnueabihf-raspbian-linux/.build/arm-linux-gnueabihf/build/static --with-mpc
 =/cbuild/slaves/oort61/crosstool-ng/builds/arm-linux-gnueabihf-raspbian-linux/.build/arm-linux-
 gnueabihf/build/static --with-ppl=/cbuild/slaves/oort61/crosstool-ng/builds/arm-linux-gnueabihf
 -raspbian-linux/.build/arm-linux-gnueabihf/build/static --with-cloog=/cbuild/slaves/oort61/cros
 stool-ng/builds/arm-linux-gnueabihf-raspbian-linux/.build/arm-linux-gnueabihf/build/static --wi
 th-libelf=/cbuild/slaves/oort61/crosstool-ng/builds/arm-linux-gnueabihf-raspbian-linux/.build/a
 rm-linux-gnueabihf/build/static --with-host-libstdcxx='-L/cbuild/slaves/oort61/crosstool-ng/bui
 lds/arm-linux-gnueabihf-raspbian-linux/.build/arm-linux-gnueabihf/build/static/lib -lpwl' --ena
 ble-threads=posix --disable-libstdcxx-pch --enable-linker-build-id --enable-plugin --enable-gol
 d --with-local-prefix=/cbuild/slaves/oort61/crosstool-ng/builds/arm-linux-gnueabihf-raspbian-li
 nux/install/arm-linux-gnueabihf/libc --enable-c99 --enable-long-long
Thread model: posix
gcc version 4.7.2 20120731 (prerelease) (crosstool-NG linaro-1.13.1+bzr2458 - Linaro GCC 2012.08
 )

But hey! I did that and the libs still don't work!

We're not done yet! So far, we've only done the basics.

In your raspberrypi folder, make a folder called rootfs.

Now you need to copy the entire /liband /usr directory to this newly created folder. I usually bring the rpi image up and copy it via rsync:

rsync -rl --delete-after --safe-links [email protected]:/{lib,usr} $HOME/raspberrypi/rootfs

where 192.168.1.PI is replaced by the IP of your Raspberry Pi.

Now, we need to write a cmake config file. Open ~/home/raspberrypi/pi.cmake in your favorite editor and insert the following:

SET(CMAKE_SYSTEM_NAME Linux)
SET(CMAKE_SYSTEM_VERSION 1)
SET(CMAKE_C_COMPILER $ENV{HOME}/raspberrypi/tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian/bin/arm-linux-gnueabihf-gcc)
SET(CMAKE_CXX_COMPILER $ENV{HOME}/raspberrypi/tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian/bin/arm-linux-gnueabihf-g++)
SET(CMAKE_FIND_ROOT_PATH $ENV{HOME}/raspberrypi/rootfs)
SET(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
SET(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
SET(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)

Now you should be able to compile your cmake programs simply by adding this extra flag: -D CMAKE_TOOLCHAIN_FILE=$HOME/raspberrypi/pi.cmake.

Using a cmake hello world example:

git clone https://github.com/jameskbride/cmake-hello-world.git 
cd cmake-hello-world
mkdir build
cd build
cmake -D CMAKE_TOOLCHAIN_FILE=$HOME/raspberrypi/pi.cmake ../
make
scp CMakeHelloWorld [email protected]:/home/pi/
ssh [email protected] ./CMakeHelloWorld

Neither has anything specific to keyboard or mobile, other than the fact that for years ARM has had a pretty substantial advantage in terms of power consumption, which made it attractive for all sorts of battery operated devices.

As far as the actual differences: ARM has more registers, supported predication for most instructions long before Intel added it, and has long incorporated all sorts of techniques (call them "tricks", if you prefer) to save power almost everywhere it could.

There's also a considerable difference in how the two encode instructions. Intel uses a fairly complex variable-length encoding in which an instruction can occupy anywhere from 1 up to 15 byte. This allows programs to be quite small, but makes instruction decoding relatively difficult (as in: decoding instructions fast in parallel is more like a complete nightmare).

ARM has two different instruction encoding modes: ARM and THUMB. In ARM mode, you get access to all instructions, and the encoding is extremely simple and fast to decode. Unfortunately, ARM mode code tends to be fairly large, so it's fairly common for a program to occupy around twice as much memory as Intel code would. Thumb mode attempts to mitigate that. It still uses quite a regular instruction encoding, but reduces most instructions from 32 bits to 16 bits, such as by reducing the number of registers, eliminating predication from most instructions, and reducing the range of branches. At least in my experience, this still doesn't usually give quite as dense of coding as x86 code can get, but it's fairly close, and decoding is still fairly simple and straightforward. Lower code density means you generally need at least a little more memory and (generally more seriously) a larger cache to get equivalent performance.

At one time Intel put a lot more emphasis on speed than power consumption. They started emphasizing power consumption primarily on the context of laptops. For laptops their typical power goal was on the order of 6 watts for a fairly small laptop. More recently (much more recently) they've started to target mobile devices (phones, tablets, etc.) For this market, they're looking at a couple of watts or so at most. They seem to be doing pretty well at that, though their approach has been substantially different from ARM's, emphasizing fabrication technology where ARM has mostly emphasized micro-architecture (not surprising, considering that ARM sells designs, and leaves fabrication to others).

Depending on the situation, a CPU's energy consumption is often more important than its power consumption though. At least as I'm using the terms, power consumption refers to power usage on a (more or less) instantaneous basis. Energy consumption, however, normalizes for speed, so if (for example) CPU A consumes 1 watt for 2 seconds to do a job, and CPU B consumes 2 watts for 1 second to do the same job, both CPUs consume the same total amount of energy (two watt seconds) to do that job--but with CPU B, you get results twice as fast.

ARM processors tend to do very well in terms of power consumption. So if you need something that needs a processor's "presence" almost constantly, but isn't really doing much work, they can work out pretty well. For example, if you're doing video conferencing, you gather a few milliseconds of data, compress it, send it, receive data from others, decompress it, play it back, and repeat. Even a really fast processor can't spend much time sleeping, so for tasks like this, ARM does really well.

Intel's processors (especially their Atom processors, which are actually intended for low power applications) are extremely competitive in terms of energy consumption. While they're running close to their full speed, they will consume more power than most ARM processors--but they also finish work quickly, so they can go back to sleep sooner. As a result, they can combine good battery life with good performance.

So, when comparing the two, you have to be careful about what you measure, to be sure that it reflects what you honestly care about. ARM does very well at power consumption, but depending on the situation you may easily care more about energy consumption than instantaneous power consumption.

Update: Yes, I understand that this answer does not explain the difference between arm64 and armhf. There is a great answer that does explain that on this page. This answer was intended to help set the asker on the right path, as they clearly had a misunderstanding about the capabilities of the Raspberry Pi at the time of asking.

Where are you seeing that the architecture is armhf? On my Raspberry Pi 3, I get:

$ uname -a
armv7l

Anyway, armv7 indicates that the system architecture is 32-bit. The first ARM architecture offering 64-bit support is armv8. See this table for reference.

You are correct that the CPU in the Raspberry Pi 3 is 64-bit, but the Raspbian OS has not yet been updated for a 64-bit device. 32-bit software can run on a 64-bit system (but not vice versa). This is why you're not seeing the architecture reported as 64-bit.

You can follow the GitHub issue for 64-bit support here, if you're interested.

I'll give a slightly advanced answer. In Python, functions are first-class objects. This means they can be "dynamically created, destroyed, passed to a function, returned as a value, and have all the rights as other variables in the programming language have."

Calling a function/class instance in Python means invoking the __call__ method of that object. For old-style classes, class instances are also callable but only if the object which creates them has a __call__ method. The same applies for new-style classes, except there is no notion of "instance" with new-style classes. Rather they are "types" and "objects".

As quoted from the Python 2 Data Model page, for function objects, class instances(old style classes), and class objects(new-style classes), "x(arg1, arg2, ...) is a shorthand for x.__call__(arg1, arg2, ...)".

Thus whenever you define a function with the shorthand def funcname(parameters): you are really just creating an object with a method __call__ and the shorthand for __call__ is to just name the instance and follow it with parentheses containing the arguments to the call. Because functions are first class objects in Python, they can be created on the fly with dynamic parameters (and thus accept dynamic arguments). This comes into handy with decorator functions/classes which you will read about later.

For now I suggest reading the Official Python Tutorial.

I have encountered such a problem when grouping object, i always resolved them by a simple way: perform a custom filter using a java.util.Set to remove duplicate object with whatever attribute of your choice as bellow

Set<String> uniqueNames = new HashSet<>();
Map<String, String> phoneBook = people
                  .stream()
                  .filter(person -> person != null && !uniqueNames.add(person.getName()))
                  .collect(toMap(Person::getName, Person::getAddress));

Hope this helps anyone having the same problem !

iOS 5 has implemented Custom Vibrations mode. So in some cases variable vibration is acceptable. The only thing is unknown what library deals with that (pretty sure not CoreTelephony) and if it is open for developers. So keep on searching.

If you are using a third party library called apache commons-lang, the following solution can be useful:

Use StringUtils class of apache commons-lang :

int i = 5;
StringUtils.leftPad(String.valueOf(i), 3, "0"); // --> "005"

As StringUtils.leftPad() is faster than String.format()

From the manual:

-N or --LINE-NUMBERS Causes a line number to be displayed at the beginning of each line in the display.

You can also toggle line numbers without quitting less by typing -N.

It is possible to toggle any of less's command line options in this way.

Eclipse has built in JUnit functionality. Open your Run Configuration manager to create a test to run. You can also create JUnit Test Cases/Suites from New->Other.

Quick:

Laravel has a fast pagination method, paginate, which only needs to pass in the number of data displayed per page.

//use the paginate
Book::orderBy('updated_at', 'desc')->paginate(8);

how to customize paging:

you can use these method: offset,limit ,skip,take

• offset,limit : where does the offset setting start, limiting the amount of data to be queried

• skip,take: skip skips a few pieces of data and takes a lot of data

for example:

Model::offset(0)->limit(10)->get();

Model::skip(3)->take(3)->get();


//i use it in my project, work fine ~

class BookController extends Controller
{
    public function getList(Request $request) {

        $page = $request->has('page') ? $request->get('page') : 1;
        $limit = $request->has('limit') ? $request->get('limit') : 10;

        $books = Book::where('status', 0)->limit($limit)->offset(($page - 1) * $limit)->get()->toArray();

        return $this->getResponse($books, count($books));
    }
}

seems the answer is in the comments and as an edit but to clarify this should work for you:

export BUILDDIR='your path to  build directory here'
export SRCDIR='your path to source dir here'
export BOOST_ROOT="/opt/boost/boost_1_57_0"
export BOOST_INCLUDE="/opt/boost/boost-1.57.0/include"
export BOOST_LIBDIR="/opt/boost/boost-1.57.0/lib"
export BOOST_OPTS="-DBOOST_ROOT=${BOOST_ROOT} -DBOOST_INCLUDEDIR=${BOOST_INCLUDE} -DBOOST_LIBRARYDIR=${BOOST_LIBDIR}"
(cd ${BUILDDIR} && cmake ${BOOST_OPTS} ${SRCDIR})

you need to specify the arguments as command line arguments or you can use a toolchain file for that, but cmake will not touch your environment variables.

and another way:

$input = array(
    'item1'  => 'object1',
    'item2'  => 'object2',
    'item-n' => 'object-n'
);

$output = implode(', ', array_map(
    function ($v, $k) {
        if(is_array($v)){
            return $k.'[]='.implode('&'.$k.'[]=', $v);
        }else{
            return $k.'='.$v;
        }
    }, 
    $input, 
    array_keys($input)
));

or:

$output = implode(', ', array_map(
    function ($v, $k) { return sprintf("%s='%s'", $k, $v); },
    $input,
    array_keys($input)
));

Turned out there was some extra code in the AppModel that was messing things up:

in beforeFind and afterFind:

App::Import("Session");
$session = new CakeSession();
$sim_id = $session->read("Simulation.id");

I don't know why, but that was what the problem was. Removing those lines fixed the issue I was having.

Here is another way of using aggregate to count rows by group:

my.data <- read.table(text = '
    month.year    my.cov
      Jan.2000     apple
      Jan.2000      pear
      Jan.2000     peach
      Jan.2001     apple
      Jan.2001     peach
      Feb.2002      pear
', header = TRUE, stringsAsFactors = FALSE, na.strings = NA)

rows.per.group  <- aggregate(rep(1, length(my.data$month.year)),
                             by=list(my.data$month.year), sum)
rows.per.group

#    Group.1 x
# 1 Feb.2002 1
# 2 Jan.2000 3
# 3 Jan.2001 2

You can try RandomStringUtils class from apache.commons:

import org.apache.commons.lang3.RandomStringUtils;

final int SHORT_ID_LENGTH = 8;

// all possible unicode characters
String shortId = RandomStringUtils.random(SHORT_ID_LENGTH);

Please keep in mind, that it will contain all possible characters which is neither URL nor human friendly.

So check out other methods too:

// HEX: 0-9, a-f. For example: 6587fddb, c0f182c1
shortId = RandomStringUtils.random(8, "0123456789abcdef"); 

// a-z, A-Z. For example: eRkgbzeF, MFcWSksx
shortId = RandomStringUtils.randomAlphabetic(8); 

// 0-9. For example: 76091014, 03771122
shortId = RandomStringUtils.randomNumeric(8); 

// a-z, A-Z, 0-9. For example: WRMcpIk7, s57JwCVA
shortId = RandomStringUtils.randomAlphanumeric(8); 

As others said probability of id collision with smaller id can be significant. Check out how birthday problem applies to your case. You can find nice explanation how to calculate approximation in this answer.

Make sure this isn't happening from your DNS. For example Cloudflare has it where you can turn on development mode where it forces a purge on your stylesheets and images as Cloudflare offers accelerated cache. This will disable it and force it to update everytime someone visits your site.

Use the

Request.Form[]

for POST variables,

Request.QueryString[]

for GET.

I ran into this problem today and wanted to share my solution. In my case, the solution was to delete the Child items before getting the Parent from the database.

Previously I was doing it like in the code below. I will then get the same error listed in this question.

var Parent = GetParent(parentId);
var children = Parent.Children;
foreach (var c in children )
{
     Context.Children.Remove(c);
}
Context.SaveChanges();

What worked for me, is to get the children items first, using the parentId (foreign key) and then delete those items. Then I can get the Parent from the database and at that point, it should not have any children items anymore and I can add new children items.

var children = GetChildren(parentId);
foreach (var c in children )
{
     Context.Children.Remove(c);
}
Context.SaveChanges();

var Parent = GetParent(parentId);
Parent.Children = //assign new entities/items here

You have the wrong table set on the command. You should use the following on your setup:

ALTER TABLE scode_tracker.ap_visits ENGINE=MyISAM;

You said that budgetpost is alphanumeric. That means it is looking for comparisons against strings. You should try enclosing your parameters in single quotes (and you are missing the final THEN in the Case expression).

UPDATE tab1   
SET budgpost_gr1=   CASE  
                        WHEN (budgpost in ('1001','1012','50055'))  THEN 'BP_GR_A'   
                        WHEN (budgpost in ('5','10','98','0'))  THEN 'BP_GR_B'  
                        WHEN (budgpost in ('11','876','7976','67465')) THEN 'What?'
                        ELSE 'Missing' 
                        END 

This should give the list of devices available for Tensorflow (under Py-3.6):

tf = tf.Session(config=tf.ConfigProto(log_device_placement=True))
tf.list_devices()
# _DeviceAttributes(/job:localhost/replica:0/task:0/device:CPU:0, CPU, 268435456)

try use keyup.enter or keydown.enter

  <button type="submit" (keyup.enter)="search(...)">Search</button>

List of tables without Identity column based on Guillermo answer:

SELECT DISTINCT TABLE_NAME
FROM            INFORMATION_SCHEMA.COLUMNS
WHERE        (TABLE_SCHEMA = 'dbo') AND (OBJECTPROPERTY(OBJECT_ID(TABLE_NAME), 'TableHasIdentity') = 0)
ORDER BY TABLE_NAME

mysqli fetch_field() worked for me:

if ($result = $mysqli -> query($sql)) {
  // Get field information for all fields
  while ($fieldinfo = $result -> fetch_field()) {
    printf("Name: %s\n", $fieldinfo -> name);
    printf("Table: %s\n", $fieldinfo -> table);
    printf("Max. Len: %d\n", $fieldinfo -> max_length);
  }
  $result -> free_result();
}

Source: https://www.w3schools.com/pHP/func_mysqli_fetch_field.asp

One of the good things about handle.exe is that you can run it as a subprocess and parse the output.

We do this in our deployment script - works like a charm.

To be precise,

Thread.isAlive() returns true if the thread has been started (may not yet be running) but has not yet completed its run method.

Thread.getState() returns the exact state of the thread.

sudo chown -R $USER /usr/local/lib/node_modules

Because the Method2 is static, all you have to do is call like this:

public class AllMethods
{
    public static void Method2()
    {
        // code here
    }
}

class Caller
{
    public static void Main(string[] args)
    {
        AllMethods.Method2();
    }
}

If they are in different namespaces you will also need to add the namespace of AllMethods to caller.cs in a using statement.

If you wanted to call an instance method (non-static), you'd need an instance of the class to call the method on. For example:

public class MyClass
{
    public void InstanceMethod() 
    { 
        // ...
    }
}

public static void Main(string[] args)
{
    var instance = new MyClass();
    instance.InstanceMethod();
}

Update

As of C# 6, you can now also achieve this with using static directive to call static methods somewhat more gracefully, for example:

// AllMethods.cs
namespace Some.Namespace
{
    public class AllMethods
    {
        public static void Method2()
        {
            // code here
        }
    }
}

// Caller.cs
using static Some.Namespace.AllMethods;

namespace Other.Namespace
{
    class Caller
    {
        public static void Main(string[] args)
        {
            Method2(); // No need to mention AllMethods here
        }
    }
}

Further Reading

• Static Classes and Static Class Members (C# Programming Guide)
• Methods (C# Programming Guide)
• using static directive (C# Reference)

Using

border: none;

doesn't work in some versions of IE. IE9 is fine but in previous versions it displays the border even when the style is "none". I experienced this when using a print stylesheet where I didn't want borders on the input boxes.

border: 0;

seems to work fine in all browsers.

Found one solution for WIFI (works for Android 4.3, 4.4):

1. Connect to WIFI network (e.g. 'Alex')
2. Settings->WIFI
3. Long tap on connected network's name (e.g. on 'Alex')
4. Modify network config-> Show advanced options
5. Set proxy settings

Use Json class instead of Content as shown following:

    //  When I want to return an error:
    if (!isFileSupported)
    {
        Response.StatusCode = (int) HttpStatusCode.BadRequest;
        return Json("The attached file is not supported", MediaTypeNames.Text.Plain);
    }
    else
    {
        //  When I want to return sucess:
        Response.StatusCode = (int)HttpStatusCode.OK; 
        return Json("Message sent!", MediaTypeNames.Text.Plain);
    }

Also set contentType:

contentType: 'application/json; charset=utf-8',

Android now supports adding a Space view between views. It's available from 4.0 ICS onwards.

As shown in this example, you can apply a background to a canvas element through CSS and this background will not be considered part the image, e.g. when fetching the contents through toDataURL().

Here are the contents of the example, for Stack Overflow posterity:

<!DOCTYPE HTML>
<html><head>
  <meta charset="utf-8">
  <title>Canvas Background through CSS</title>
  <style type="text/css" media="screen">
    canvas, img { display:block; margin:1em auto; border:1px solid black; }
    canvas { background:url(lotsalasers.jpg) }
  </style>
</head><body>
<canvas width="800" height="300"></canvas>
<img>
<script type="text/javascript" charset="utf-8">
  var can = document.getElementsByTagName('canvas')[0];
  var ctx = can.getContext('2d');
  ctx.strokeStyle = '#f00';
  ctx.lineWidth   = 6;
  ctx.lineJoin    = 'round';
  ctx.strokeRect(140,60,40,40);
  var img = document.getElementsByTagName('img')[0];
  img.src = can.toDataURL();
</script>
</body></html>

I had the same error, because I was trying to manipulate session variables inside a custom Session class.

I had to pass the current context (system.web.httpcontext.current) into the class, and then everything worked out fine.

MA

if you have installed NDK succesfully then start with it sample application

http://developer.android.com/sdk/ndk/overview.html#samples

if you are interested another ways of this then may this will help

http://shareprogrammingtips.blogspot.com/2018/07/cross-compile-cc-based-programs-and-run.html

I also want to know is it possible to push the compiled binary into android device or AVD and run using the terminal of the android device or AVD?

here you can see NestedVM

NestedVM provides binary translation for Java Bytecode. This is done by having GCC compile to a MIPS binary which is then translated to a Java class file. Hence any application written in C, C++, Fortran, or any other language supported by GCC can be run in 100% pure Java with no source changes.

Example: Cross compile Hello world C program and run it on android

Try using String.getBytes(). It returns a byte[] representing string data. Example:

String data = "sample data";
byte[] byteData = data.getBytes();

_{New, expanded answer to an old, commonly asked question...}

Default Values

• Occurrence constraints minOccurs and maxOccurs default to 1.

Common Cases Explained

<xsd:element name="A"/>

means A is required and must appear exactly once.

<xsd:element name="A" minOccurs="0"/>

means A is optional and may appear at most once.

 <xsd:element name="A" maxOccurs="unbounded"/>

means A is required and may repeat an unlimited number of times.

 <xsd:element name="A" minOccurs="0" maxOccurs="unbounded"/>

means A is optional and may repeat an unlimited number of times.

See Also

• W3C XML Schema Part 0: Primer

  In general, an element is required to appear when the value of minOccurs is 1 or more. The maximum number of times an element may appear is determined by the value of a maxOccurs attribute in its declaration. This value may be a positive integer such as 41, or the term unbounded to indicate there is no maximum number of occurrences. The default value for both the minOccurs and the maxOccurs attributes is 1. Thus, when an element such as comment is declared without a maxOccurs attribute, the element may not occur more than once. Be sure that if you specify a value for only the minOccurs attribute, it is less than or equal to the default value of maxOccurs, i.e. it is 0 or 1. Similarly, if you specify a value for only the maxOccurs attribute, it must be greater than or equal to the default value of minOccurs, i.e. 1 or more. If both attributes are omitted, the element must appear exactly once.

• W3C XML Schema Part 1: Structures Second Edition

  <element
    maxOccurs = (nonNegativeInteger | unbounded)  : 1
    minOccurs = nonNegativeInteger : 1
    >
  
  </element>
  

To end the program, you should be using Ctrl + C. If you do that, it sends SIGINT, which allows the program to end gracefully, unbinding from any ports it is listening on.

See also: https://superuser.com/a/262948/48624

Here is what made the error disappear for me:

Close eclipse, open up a terminal window and run:

$ mvn clean eclipse:clean eclipse:eclipse

Are you using Maven? If so,

1. Right-click on the project, Build Path and go to Configure Build Path
2. Click the libraries tab. If Maven dependencies are not in the list, you need to add it.
3. Close the dialog.

To add it: Right-click on the project, Maven → Disable Maven Nature Right-click on the project, Configure → Convert to Maven Project.

And then clean

Edit 1:

If that doesn't resolve the issue try right-clicking on your project and select properties. Select Java Build Path → Library tab. Look for a JVM. If it's not there, click to add Library and add the default JVM. If VM is there, click edit and select the default JVM. Hopefully, that works.

Edit 2:

You can also try going into the folder where you have all your projects and delete the .metadata for eclipse (be aware that you'll have to re-import all the projects afterwards! Also all the environment settings you've set would also have to be redone). After it was deleted just import the project again, and hopefully, it works.

One more alternative

const decToBin = dec => {
  let bin = '';
  let f = false;

  while (!f) {
    bin = bin + (dec % 2);    
    dec = Math.trunc(dec / 2);  

    if (dec === 0 ) f = true;
  }

  return bin.split("").reverse().join("");
}

console.log(decToBin(0));
console.log(decToBin(1));
console.log(decToBin(2));
console.log(decToBin(3));
console.log(decToBin(4));
console.log(decToBin(5));
console.log(decToBin(6));

You can just use the pipe on its own:

"string1|string2"

for example:

String s = "string1, string2, string3";
System.out.println(s.replaceAll("string1|string2", "blah"));

Output:

blah, blah, string3

The main reason to use parentheses is to limit the scope of the alternatives:

String s = "string1, string2, string3";
System.out.println(s.replaceAll("string(1|2)", "blah"));

has the same output. but if you just do this:

String s = "string1, string2, string3";
System.out.println(s.replaceAll("string1|2", "blah"));

you get:

blah, stringblah, string3

because you've said "string1" or "2".

If you don't want to capture that part of the expression use ?::

String s = "string1, string2, string3";
System.out.println(s.replaceAll("string(?:1|2)", "blah"));

I also faced this issue. I was having JDK 1.8.0_121. I upgraded JDK to 1.8.0_181 and it worked like a charm.

Using JQuery would be good;

<a href="#" id="youLink">Call JavaScript </a>



$("#yourLink").click(function(e){
//do what ever you want...
});

Sounds like you should stay with the defaults ;-)

Seriously: The number of maximum parallel connections you should set depends on your expected tomcat usage and also on the number of cores on your server. More cores on your processor => more parallel threads that can be executed.

See here how to configure...

Tomcat 9: https://tomcat.apache.org/tomcat-9.0-doc/config/executor.html

Tomcat 8: https://tomcat.apache.org/tomcat-8.0-doc/config/executor.html

Tomcat 7: https://tomcat.apache.org/tomcat-7.0-doc/config/executor.html

Tomcat 6: https://tomcat.apache.org/tomcat-6.0-doc/config/executor.html

I had to change git-rm to git rm in the above to get it to work:

find . -depth -name '.DS_Store' -exec git rm --cached '{}' \; -print

You can do this:

listView.setAdapter(null);

Please follow below steps to install python 3 with pip:

Step 1 : Install Python from download here

Step 2 : you’ll need to download get-pip.py

Step 3 : After download get-pip.py , open your commant prompt and go to directory where your get-pip.py file saved .

Step 4 : Enter command python get-pip.py in cmd.

Step 5 : Pip installed successfully , Verify pip installation by type command in cmd pip --version

You could also use a URI template. If you structured your request into a restful URL Spring could parse the provided value from the url.

HTML

<li>
    <a id="byParameter" 
       class="textLink" href="<c:url value="/mapping/parameter/bar />">By path, method,and
           presence of parameter</a>
</li>

Controller

@RequestMapping(value="/mapping/parameter/{foo}", method=RequestMethod.GET)
public @ResponseBody String byParameter(@PathVariable String foo) {
    //Perform logic with foo
    return "Mapped by path + method + presence of query parameter! (MappingController)";
}

Spring URI Template Documentation

"N/A" is not a string it is an error, try this:

=if(ISNA(A1),C1)

you have to place this fomula in cell B1 so it will get the value of your formula

I use with forever:

1. Build your Angular application with angular-cli to dist folder ng build --prod --output-path ./dist

2. Create server.js file in your Angular application path:

   const express = require('express');
   const path = require('path');
   
   const app = express();
   
   app.use(express.static(__dirname + '/dist'));
   
   app.get('/*', function(req,res) {
       res.sendFile(path.join(__dirname + '/dist/index.html'));
   });
   app.listen(80);
   

3. Start forever forever start server.js

That's all! your application should be running!

The read_sql docs say this params argument can be a list, tuple or dict (see docs).

To pass the values in the sql query, there are different syntaxes possible: ?, :1, :name, %s, %(name)s (see PEP249).
But not all of these possibilities are supported by all database drivers, which syntax is supported depends on the driver you are using (psycopg2 in your case I suppose).

In your second case, when using a dict, you are using 'named arguments', and according to the psycopg2 documentation, they support the %(name)s style (and so not the :name I suppose), see http://initd.org/psycopg/docs/usage.html#query-parameters.
So using that style should work:

df = psql.read_sql(('select "Timestamp","Value" from "MyTable" '
                     'where "Timestamp" BETWEEN %(dstart)s AND %(dfinish)s'),
                   db,params={"dstart":datetime(2014,6,24,16,0),"dfinish":datetime(2014,6,24,17,0)},
                   index_col=['Timestamp'])

What about the css opacity attribute? 0 to 1 values.

But then you probably need to use a more explicit dom element than "font". For instance:

<html><body><span style=\"opacity: 0.5;\"><font color=\"black\" face=\"arial\" size=\"4\">THIS IS MY TEXT</font></span></body></html>

As an additional information I would of course suggest you use CSS declarations outside of your html elements, but as well try to use the font css style instead of the font html tag.

For cross browser css3 styles generator, have a look at http://css3please.com/

This should do what you are looking for.. It assumes your list will always be just numbers. If that is not the case, just change the references to DBMS_SQL.NUMBER_TABLE to a table type that works for all of your data:

CREATE OR REPLACE PROCEDURE insert_from_lists(
    list1_in IN VARCHAR2,
    list2_in IN VARCHAR2,
    delimiter_in IN VARCHAR2 := ','
)
IS 
    v_tbl1 DBMS_SQL.NUMBER_TABLE;
    v_tbl2 DBMS_SQL.NUMBER_TABLE;

    FUNCTION list_to_tbl
    (
        list_in IN VARCHAR2
    )
    RETURN DBMS_SQL.NUMBER_TABLE
    IS
        v_retval DBMS_SQL.NUMBER_TABLE;
    BEGIN

        IF list_in is not null
        THEN
            /*
            || Use lengths loop through the list the correct amount of times,
            || and substr to get only the correct item for that row
            */
            FOR i in 1 .. length(list_in)-length(replace(list_in,delimiter_in,''))+1
            LOOP
                /*
                || Set the row = next item in the list
                */
                v_retval(i) := 
                        substr (
                            delimiter_in||list_in||delimiter_in,
                            instr(delimiter_in||list_in||delimiter_in, delimiter_in, 1, i  ) + 1,
                            instr (delimiter_in||list_in||delimiter_in, delimiter_in, 1, i+1) - instr (delimiter_in||list_in||delimiter_in, delimiter_in, 1, i) -1
                        );
            END LOOP;
        END IF;

        RETURN v_retval;

    END list_to_tbl;
BEGIN 
   -- Put lists into collections
   v_tbl1 := list_to_tbl(list1_in);
   v_tbl2 := list_to_tbl(list2_in);

   IF v_tbl1.COUNT <> v_tbl2.COUNT
   THEN
      raise_application_error(num => -20001, msg => 'Length of lists do not match');
   END IF;

   -- Bulk insert from collections
   FORALL i IN INDICES OF v_tbl1
      insert into tmp (a, b)
      values (v_tbl1(i), v_tbl2(i));

END insert_from_lists; 

TNSPing command line will show the version. similarly, sqlPlus.exe will print its version. You can also go to the readme files in the 'relnotes' directory of your client install. Version 10.2 has a file named README_jdbc.txt, for example, which will tell you which version has been installed.

If there are multiple values for the same key, the following code will append those values to a list corresponding to their key,

d = dict()
for x,y in t:
    if(d.has_key(y)):
        d[y].append(x)
    else:
        d[y] = [x]

For more complex layouts I often used GridBagLayout, which is more complex, but that's the price. Today, I would probably check out MiGLayout.

A simple pure-Python implementation would be:

import math
import re
from collections import Counter

WORD = re.compile(r"\w+")


def get_cosine(vec1, vec2):
    intersection = set(vec1.keys()) & set(vec2.keys())
    numerator = sum([vec1[x] * vec2[x] for x in intersection])

    sum1 = sum([vec1[x] ** 2 for x in list(vec1.keys())])
    sum2 = sum([vec2[x] ** 2 for x in list(vec2.keys())])
    denominator = math.sqrt(sum1) * math.sqrt(sum2)

    if not denominator:
        return 0.0
    else:
        return float(numerator) / denominator


def text_to_vector(text):
    words = WORD.findall(text)
    return Counter(words)


text1 = "This is a foo bar sentence ."
text2 = "This sentence is similar to a foo bar sentence ."

vector1 = text_to_vector(text1)
vector2 = text_to_vector(text2)

cosine = get_cosine(vector1, vector2)

print("Cosine:", cosine)

Prints:

Cosine: 0.861640436855

The cosine formula used here is described here.

This does not include weighting of the words by tf-idf, but in order to use tf-idf, you need to have a reasonably large corpus from which to estimate tfidf weights.

You can also develop it further, by using a more sophisticated way to extract words from a piece of text, stem or lemmatise it, etc.

netlink socket is possible

man netlink(7) netlink(3) rtnetlink(7) rtnetlink(3)

#include <assert.h>
#include <stdio.h>
#include <linux/if.h>
#include <linux/rtnetlink.h>
#include <unistd.h>

#define SZ 8192

int main(){

  // Send
  typedef struct {
    struct nlmsghdr nh;
    struct ifinfomsg ifi;
  } Req_getlink;
  assert(NLMSG_LENGTH(sizeof(struct ifinfomsg))==sizeof(Req_getlink));
  int fd=-1;
  fd=socket(AF_NETLINK,SOCK_RAW,NETLINK_ROUTE);
  assert(0==bind(fd,(struct sockaddr*)(&(struct sockaddr_nl){
    .nl_family=AF_NETLINK,
    .nl_pad=0,
    .nl_pid=getpid(),
    .nl_groups=0
  }),sizeof(struct sockaddr_nl)));
  assert(sizeof(Req_getlink)==send(fd,&(Req_getlink){
    .nh={
      .nlmsg_len=NLMSG_LENGTH(sizeof(struct ifinfomsg)),
      .nlmsg_type=RTM_GETLINK,
      .nlmsg_flags=NLM_F_REQUEST|NLM_F_ROOT,
      .nlmsg_seq=0,
      .nlmsg_pid=0
    },
    .ifi={
      .ifi_family=AF_UNSPEC,
      // .ifi_family=AF_INET,
      .ifi_type=0,
      .ifi_index=0,
      .ifi_flags=0,
      .ifi_change=0,
    }
  },sizeof(Req_getlink),0));

  // Receive
  char recvbuf[SZ]={};
  int len=0;
  for(char *p=recvbuf;;){
    const int seglen=recv(fd,p,sizeof(recvbuf)-len,0);
    assert(seglen>=1);
    len += seglen;
    if(((struct nlmsghdr*)p)->nlmsg_type==NLMSG_DONE||((struct nlmsghdr*)p)->nlmsg_type==NLMSG_ERROR)
      break;
    p += seglen;
  }

  struct nlmsghdr *nh=(struct nlmsghdr*)recvbuf;
  for(;NLMSG_OK(nh,len);nh=NLMSG_NEXT(nh,len)){
    if(nh->nlmsg_type==NLMSG_DONE)
      break;

    struct ifinfomsg *ifm=(struct ifinfomsg*)NLMSG_DATA(nh);

    printf("#%d ",ifm->ifi_index);
    #ifdef _NET_IF_H
    #pragma GCC error "include <linux/if.h> instead of <net/if.h>"
    #endif

    // Part 3 rtattr
    struct rtattr *rta=IFLA_RTA(ifm); // /usr/include/linux/if_link.h
    int rtl=RTM_PAYLOAD(nh);

    for(;RTA_OK(rta,rtl);rta=RTA_NEXT(rta,rtl))switch(rta->rta_type){
    case IFLA_IFNAME:printf("%s ",(const char*)RTA_DATA(rta));break;
    case IFLA_ADDRESS:
      printf("hwaddr ");
      for(int i=0;i<5;++i)
        printf("%02X:",*((unsigned char*)RTA_DATA(rta)+i));
      printf("%02X ",*((unsigned char*)RTA_DATA(rta)+5));
      break;
    case IFLA_BROADCAST:
      printf("bcast ");
      for(int i=0;i<5;++i)
        printf("%02X:",*((unsigned char*)RTA_DATA(rta)+i));
      printf("%02X ",*((unsigned char*)RTA_DATA(rta)+5));
      break;
    case IFLA_PERM_ADDRESS:
      printf("perm ");
      for(int i=0;i<5;++i)
        printf("%02X:",*((unsigned char*)RTA_DATA(rta)+i));
      printf("%02X ",*((unsigned char*)RTA_DATA(rta)+5));
      break;
    }

    printf("\n");

  }

  close(fd);
  fd=-1;
  return 0;

}

Example

#1 lo hwaddr 00:00:00:00:00:00 bcast 00:00:00:00:00:00
#2 eth0 hwaddr 57:da:52:45:5b:1a bcast ff:ff:ff:ff:ff:ff perm 57:da:52:45:5b:1a
#3 wlan0 hwaddr 3c:7f:46:47:58:c2 bcast ff:ff:ff:ff:ff:ff perm 3c:7f:46:47:58:c2

select get_something('NAME', sys.diutil.int_to_bool(1)) from dual;

EventLog.SourceExists enumerates through the subkeys of HKLM\SYSTEM\CurrentControlSet\services\eventlog to see if it contains a subkey with the specified name. If the user account under which the code is running does not have read access to a subkey that it attempts to access (in your case, the Security subkey) before finding the target source, you will see an exception like the one you have described.

The usual approach for handling such issues is to register event log sources at installation time (under an administrator account), then assume that they exist at runtime, allowing any resulting exception to be treated as unexpected if a target event log source does not actually exist at runtime.

If you're on the Model Overview page you get a tab with the schema. If you rightclick on that tab you get an option to "edit schema". From there you can rename the schema by adding a new name, then click outside the field. This goes for MySQL Workbench 5.2.30 CE

Edit: On the model overview it's under Physical Schemata

Screenshot:

I had this problem and I couldn't find the solution here, so I want to share my solution in case someone else has this problem again.

I had this code:

public void finishAction() {
  onDestroy();
  finish();
}

and solved the problem by deleting the line "onDestroy();"

public void finishAction() {
  finish();
}

The reason I wrote the initial code: I know that when you execute "finish()" the activity calls "onDestroy()", but I'm using threads and I wanted to ensure that all the threads are destroyed before starting the next activity, and it looks like "finish()" is not always immediate. I need to process/reduce a lot of “Bitmap” and display big “bitmaps” and I’m working on improving the use of the memory in my app

Now I will kill the threads using a different method and I’ll execute this method from "onDestroy();" and when I think I need to kill all the threads.

public void finishAction() {
  onDestroyThreads();
  finish();
}

Forward Slash is special character so,you have to add a backslash before forward slash to make it work

$patterm = "/[0-9]{2}+(?:-|.|\/)+[a-zA-Z]{3}+(?:-|.|\/)+[0-9]{4}/";

where / represents search for / In this way you

Using Bytescout PDF Extractor SDK is a good option. It is cheap and gives plenty of PDF related functionality. One of the answers above points to the dead page Bytescout on GitHub. I am providing a relevant working sample to extract table from PDF. You may use it to export in any format.

Set extractor = CreateObject("Bytescout.PDFExtractor.StructuredExtractor")

extractor.RegistrationName = "demo"
extractor.RegistrationKey = "demo"

' Load sample PDF document
extractor.LoadDocumentFromFile "../../sample3.pdf"

For ipage = 0 To extractor.GetPageCount() - 1 

    ' starting extraction from page #"
    extractor.PrepareStructure ipage

    rowCount = extractor.GetRowCount(ipage)

    For row = 0 To rowCount - 1 
        columnCount = extractor.GetColumnCount(ipage, row)

        For col = 0 To columnCount-1
            WScript.Echo "Cell at page #" +CStr(ipage) + ", row=" & CStr(row) & ", column=" & _
                CStr(col) & vbCRLF & extractor.GetCellValue(ipage, row, col)
        Next
    Next
Next

Many more samples available here: https://github.com/bytescout/pdf-extractor-sdk-samples

bundle update json. Helped to get through.

Set class on your input field:

$(".digitsOnly").on('keypress',function (event) {
    var keynum
    if(window.event) {// IE8 and earlier
       keynum = event.keyCode;
    } else if(event.which) { // IE9/Firefox/Chrome/Opera/Safari
       keynum = event.which;
    } else {
       keynum = 0;
    }

    if(keynum === 8 || keynum === 0 || keynum === 9) {
        return;
    }
    if(keynum < 46 || keynum > 57 || keynum === 47) {
        event.preventDefault();
    } // prevent all special characters except decimal point
}

Restrict paste and drag-drop on your input field:

$(".digitsOnly").on('paste drop',function (event) {
    let temp=''
    if(event.type==='drop') {
        temp =$("#financialGoal").val()+event.originalEvent.dataTransfer.getData('text');
        var regex = new RegExp(/(^100(\.0{1,2})?$)|(^([1-9]([0-9])?|0)(\.[0-9]{1,2})?$)/g); //Allows only digits to be drag and dropped
        if (!regex.test(temp)) {
           event.preventDefault();
           return false;
        }
    } else if(event.type==='paste') {
        temp=$("#financialGoal").val()+event.originalEvent.clipboardData.getData('Text')
        var regex = new RegExp(/(^100(\.0{1,2})?$)|(^([1-9]([0-9])?|0)(\.[0-9]{1,2})?$)/g); //Allows only digits to be pasted
        if (!regex.test(temp)) {
           event.preventDefault();
           return false;
        }
    }
}

Call these events in componentDidMount() to apply the class as soon as the page loads.

i think it should be

select convert(varchar(10),StandardCost) +'S' from DimProduct where ProductKey = 212

or

select cast(StandardCost as varchar(10)) + 'S' from DimProduct where ProductKey = 212

<?php
/* 
 * Thanks:
 *   - The idea of extracting accents equiv chars with the help of the HTMLSpecialChars convertion was taking from ICanBoogie Package of 'Olivier Laviale' {@link http://www.weirdog.com/blog/php/supprimer-les-accents-des-caracteres-accentues.html}
*/
function accentCharsModifier($str){
    if(($length=mb_strlen($str,"UTF-8"))<strlen($str)){
        $i=$count=0;
        while($i<$length){
            if(strlen($c=mb_substr($str,$i,1,"UTF-8"))>1){
                $he=htmlentities($c); 
                if(($nC=preg_replace("#&([A-Za-z])(?:acute|cedil|caron|circ|grave|orn|ring|slash|th|tilde|uml);#", "\\1", $he))!=$he ||
                    ($nC=preg_replace("#&([A-Za-z]{2})(?:lig);#", "\\1", $he))!=$he ||
                    ($nC=preg_replace("#&[^;]+;#", "", $he))!=$he){
                    $str=str_replace($c,$nC,$str,$count);if($nC==""){$length=$length-$count;$i--;}
                }
            }
            $i++;
        }
    }
    return $str;
}
echo accentCharsModifier("&éôpkAÈû");
?>

Try loading the website in another web browser such as Safari. Recently had this problem and for some reason, it worked after loading in a different browser.

See the UIScreen Reference: http://developer.apple.com/library/ios/#documentation/uikit/reference/UIScreen_Class/Reference/UIScreen.html

if([[UIScreen mainScreen] respondsToSelector:NSSelectorFromString(@"scale")])
{
    if ([[UIScreen mainScreen] scale] < 1.1)
        NSLog(@"Standard Resolution Device");

    if ([[UIScreen mainScreen] scale] > 1.9)
        NSLog(@"High Resolution Device");
}

I can't give you graphics, but maybe I can give a clear explanation.

Suppose we have an information channel, such as a light that flashes once every day either red or green. How much information does it convey? The first guess might be one bit per day. But what if we add blue, so that the sender has three options? We would like to have a measure of information that can handle things other than powers of two, but still be additive (the way that multiplying the number of possible messages by two adds one bit). We could do this by taking log₂(number of possible messages), but it turns out there's a more general way.

Suppose we're back to red/green, but the red bulb has burned out (this is common knowledge) so that the lamp must always flash green. The channel is now useless, we know what the next flash will be so the flashes convey no information, no news. Now we repair the bulb but impose a rule that the red bulb may not flash twice in a row. When the lamp flashes red, we know what the next flash will be. If you try to send a bit stream by this channel, you'll find that you must encode it with more flashes than you have bits (50% more, in fact). And if you want to describe a sequence of flashes, you can do so with fewer bits. The same applies if each flash is independent (context-free), but green flashes are more common than red: the more skewed the probability the fewer bits you need to describe the sequence, and the less information it contains, all the way to the all-green, bulb-burnt-out limit.

It turns out there's a way to measure the amount of information in a signal, based on the the probabilities of the different symbols. If the probability of receiving symbol x_i is p_i, then consider the quantity

-log pi

The smaller p_i, the larger this value. If x_i becomes twice as unlikely, this value increases by a fixed amount (log(2)). This should remind you of adding one bit to a message.

If we don't know what the symbol will be (but we know the probabilities) then we can calculate the average of this value, how much we will get, by summing over the different possibilities:

I = -Σ pi log(pi)

This is the information content in one flash.

Red bulb burnt out: pred = 0, pgreen=1, I = -(0 + 0)  = 0
Red and green equiprobable: pred = 1/2, pgreen = 1/2, I = -(2 * 1/2 * log(1/2)) = log(2)
Three colors, equiprobable: pi=1/3, I = -(3 * 1/3 * log(1/3)) = log(3)
Green and red, green twice as likely: pred=1/3, pgreen=2/3, I = -(1/3 log(1/3) + 2/3 log(2/3)) = log(3) - 2/3 log(2)

This is the information content, or entropy, of the message. It is maximal when the different symbols are equiprobable. If you're a physicist you use the natural log, if you're a computer scientist you use log₂ and get bits.

This is what finally worked for me.

• Backend running on localhost:8080
• Fetch your IP address (ipconfig on Windows)

• Configure your Android emulator's proxy to use your IP address as host name and the port your backend is running on as port (in my case: 192.168.1.86:8080

• Have your Android app send requests to the same URL (192.168.1.86:8080) (sending requests to localhost, and http://10.0.2.2 did not work for me)

You need to add:

#include <string>

In your header file.

sum is used to add elements; nrow is used to count the number of rows in a rectangular array (typically a matrix or data.frame); length is used to count the number of elements in a vector. You need to apply these functions correctly.

Let's assume your data is a data frame named "dat". Correct solutions:

nrow(dat[dat$sCode == "CA",])
length(dat$sCode[dat$sCode == "CA"])
sum(dat$sCode == "CA")

You can use CURL for this purpose see the example code:

$url = "your url";    
$content = json_encode("your data to be sent");

$curl = curl_init($url);
curl_setopt($curl, CURLOPT_HEADER, false);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
curl_setopt($curl, CURLOPT_HTTPHEADER,
        array("Content-type: application/json"));
curl_setopt($curl, CURLOPT_POST, true);
curl_setopt($curl, CURLOPT_POSTFIELDS, $content);

$json_response = curl_exec($curl);

$status = curl_getinfo($curl, CURLINFO_HTTP_CODE);

if ( $status != 201 ) {
    die("Error: call to URL $url failed with status $status, response $json_response, curl_error " . curl_error($curl) . ", curl_errno " . curl_errno($curl));
}


curl_close($curl);

$response = json_decode($json_response, true);

Use:

var retObj ={};
$.each(ArrayOfObjects, function (index, obj) {

        if (obj.id === '5') { // id.toString() if it is int

            retObj = obj;
            return false;
        }
    });
return retObj;

It should return an object by id.

As your project is a console project you can pass the path to the text files that you want to read via the string[] args

static void Main(string[] args)
{
}

Within Main you can check if arguments are passed

if (args.Length == 0){ System.Console.WriteLine("Please enter a parameter");}

Extract an argument

string fileToRead = args[0];

Nearly all languages support the concept of argument passing and follow similar patterns to C#.

For more C# specific see http://msdn.microsoft.com/en-us/library/vstudio/cb20e19t.aspx

Try this:

mBox = new TextView(context);
mBox.setText(Html.fromHtml("<b>" + title + "</b>" +  "<br />" + 
      "<small>" + description + "</small>" + "<br />" + 
      "<small>" + DateAdded + "</small>"));

Maybe I'm misunderstanding, but if you want truly readonly Ids why not use an actual readonly field?

public class Person
{
   public Person(int id)
   {
      m_id = id;
   }

   readonly int m_id;
   public int Id { get { return m_id; } }
}

My site is hosted on MochaHost, i had a tough time to setup the .htaccess file so that i can remove the index.php from my urls. However, after some googling, i combined the answer on this thread and other answers. My final working .htaccess file has the following contents:

<IfModule mod_rewrite.c>
    # Turn on URL rewriting
    RewriteEngine On

    # If your website begins from a folder e.g localhost/my_project then 
    # you have to change it to: RewriteBase /my_project/
    # If your site begins from the root e.g. example.local/ then
    # let it as it is
    RewriteBase /

    # Protect application and system files from being viewed when the index.php is missing
    RewriteCond $1 ^(application|system|private|logs)

    # Rewrite to index.php/access_denied/URL
    RewriteRule ^(.*)$ index.php/access_denied/$1 [PT,L]

    # Allow these directories and files to be displayed directly:
    RewriteCond $1 ^(index\.php|robots\.txt|favicon\.ico|public|app_upload|assets|css|js|images)

    # No rewriting
    RewriteRule ^(.*)$ - [PT,L]

    # Rewrite to index.php/URL
    RewriteRule ^(.*)$ index.php?/$1 [PT,L]
</IfModule>

I think below link might help you -

http://svenaelterman.wordpress.com/2012/04/14/step-by-step-enabling-semantic-search-on-sql-server-2012/

just like in C and C++, the boolean or operator is ||

if (ActionsLogWriter.Close || ErrorDumpWriter.Close == true)
{
    // Do stuff here
}

For this issue need to add the partition for date column values, If last partition 20201231245959, then inserting the 20210110245959 values, this issue will occurs.

For that need to add the 2021 partition into that table

ALTER TABLE TABLE_NAME ADD PARTITION PARTITION_NAME VALUES LESS THAN (TO_DATE('2021-12-31 24:59:59', 'SYYYY-MM-DD HH24:MI:SS', 'NLS_CALENDAR=GREGORIAN')) NOCOMPRESS

There are already many answers, but it's worth to look into iterators as well, especially as it has been asked for a standard way:

$arr = range(1, 3);

$it = new CachingIterator(new ArrayIterator($arr));
foreach($it as $key => $value)
{
  if (!$it->hasNext()) echo 'Last:';
  echo $value, "\n";
}

You might find something that does work more flexible for other cases, too.

I had the same problem once.
Follow these steps to delete proxy values:

1.To delete proxy in npm:
(-g is Important)
npm config delete proxy -g
npm config delete http-proxy -g
npm config delete https-proxy -g

Check the npm config file using:
npm config list

2.To delete system proxy: set HTTP_PROXY=null set HTTPS_PROXY=null

Now close the command line and open it to refresh the variables(proxy).

The other answers are missing the obvious. Simply call an async function from your constructor:

constructor() {
    setContentAsync();
}

async setContentAsync() {
    let uid = this.getAttribute('data-uid')
    let message = await grabUID(uid)

    const shadowRoot = this.attachShadow({mode: 'open'})
    shadowRoot.innerHTML = `
      <div id="email">A random email message has appeared. ${message}</div>
    `
}

Accepted answer of Kapil is flawed, it will update more than one record if there are 2 or more than one records available with same timestamps, not a true top 1 query.

    ;With cte as (
                    SELECT TOP(1) email_fk FROM abc WHERE id= 177 ORDER BY created DESC   
            )
    UPDATE cte SET email_fk = 10

Ref Remus Rusanu Ans:- SQL update top1 row query

There are two ways of closing an alert dialog.

Option 1:

AlertDialog#create().dismiss();

Option 2:

The DialogInterface#dismiss();

Out of the box, the framework calls DialogInterface#dismiss(); when you define event listeners for the buttons:

1. AlertDialog#setNegativeButton();
2. AlertDialog#setPositiveButton();
3. AlertDialog#setNeutralButton();

for the Alert dialog.

Use a setter for the ViewChild:

 private contentPlaceholder: ElementRef;

 @ViewChild('contentPlaceholder') set content(content: ElementRef) {
    if(content) { // initially setter gets called with undefined
        this.contentPlaceholder = content;
    }
 }

The setter is called with an element reference once *ngIf becomes true.

Note, for Angular 8 you have to make sure to set { static: false }, which is a default setting in other Angular versions:

 @ViewChild('contentPlaceholder', { static: false })

Note: if contentPlaceholder is a component you can change ElementRef to your component Class:

  private contentPlaceholder: MyCustomComponent;

  @ViewChild('contentPlaceholder') set content(content: MyCustomComponent) {
     if(content) { // initially setter gets called with undefined
          this.contentPlaceholder = content;
     }
  }

Without CSS, you basically are stuck with using an image tag. Basically make an image of the text and add the underline. That basically means your page is useless to a screen reader.

With CSS, it is simple.

HTML:

<u class="dotted">I like cheese</u>

CSS:

u.dotted{
  border-bottom: 1px dashed #999;
  text-decoration: none; 
}

Running Example

Example page

<!DOCTYPE HTML>
<html>
<head>
    <style>
        u.dotted{
          border-bottom: 1px dashed #999;
          text-decoration: none; 
        }
    </style>
</head>
<body>
    <u class="dotted">I like cheese</u>
</body>
</html>

For Python 3

Remove the rb argument and use either r or don't pass argument (default read mode).

with open( <path-to-file>, 'r' ) as theFile:
    reader = csv.DictReader(theFile)
    for line in reader:
        # line is { 'workers': 'w0', 'constant': 7.334, 'age': -1.406, ... }
        # e.g. print( line[ 'workers' ] ) yields 'w0'
        print(line)

For Python 2

import csv
with open( <path-to-file>, "rb" ) as theFile:
    reader = csv.DictReader( theFile )
    for line in reader:
        # line is { 'workers': 'w0', 'constant': 7.334, 'age': -1.406, ... }
        # e.g. print( line[ 'workers' ] ) yields 'w0'

Python has a powerful built-in CSV handler. In fact, most things are already built in to the standard library.

ravgs = [sum(data[i:i+5])/5. for i in range(len(data)-4)]

This isn't the most efficient approach but it will give your answer and I'm unclear if your window is 5 points or 10. If its 10, replace each 5 with 10 and the 4 with 9.

 LayoutInflater factory = LayoutInflater.from(this);
final View textEntryView = factory.inflate(R.layout.text_entry, null);
//text_entry is an Layout XML file containing two text field to display in alert dialog
final EditText input1 = (EditText) textEntryView.findViewById(R.id.EditText1);
final EditText input2 = (EditText) textEntryView.findViewById(R.id.EditText2);             
input1.setText("DefaultValue", TextView.BufferType.EDITABLE);
input2.setText("DefaultValue", TextView.BufferType.EDITABLE);
final AlertDialog.Builder alert = new AlertDialog.Builder(this);

alert.setIcon(R.drawable.icon)
     .setTitle("Enter the Text:")
     .setView(textEntryView)
     .setPositiveButton("Save", 
         new DialogInterface.OnClickListener() {
             public void onClick(DialogInterface dialog, int whichButton) {
                    Log.i("AlertDialog","TextEntry 1 Entered "+input1.getText().toString());
                    Log.i("AlertDialog","TextEntry 2 Entered "+input2.getText().toString());
                    /* User clicked OK so do some stuff */
             }
         })
     .setNegativeButton("Cancel",
         new DialogInterface.OnClickListener() {
             public void onClick(DialogInterface dialog,
                    int whichButton) {
             }
         });
alert.show();

I read through this question, and feel the best way to implement useEffect is not mentioned in the answers. Let's say you have a network call, and would like to do something once you have the response. For the sake of simplicity, let's store the network response in a state variable. One might want to use action/reducer to update the store with the network response.

const [data, setData] = useState(null);

/* This would be called on initial page load */
useEffect(()=>{
    fetch(`https://www.reddit.com/r/${subreddit}.json`)
    .then(data => {
        setData(data);
    })
    .catch(err => {
        /* perform error handling if desired */
    });
}, [])

/* This would be called when store/state data is updated */
useEffect(()=>{
    if (data) {
        setPosts(data.children.map(it => {
            /* do what you want */
        }));
    }
}, [data]);

Reference => https://reactjs.org/docs/hooks-effect.html#tip-optimizing-performance-by-skipping-effects

Why are they using <i> tag to display icons ?

Because it is:

• Short
• i stands for icon (although not in HTML)

Is it not a bad practice ?

Awful practice. It is a triumph of performance over semantics.

I was having the exact same problem in Windows.

I noticed that in OP's gist, he uses string("open ") in line 21, however, by using it one comes across this error:

'open' is not recognized as an internal or external command

After researching, I have found that open is MacOS the default command to open things. It is different on Windows or Linux.

Linux: xdg-open <URL>

Windows: start <URL>

For those of you that are using Windows, as I am, you can use the following:

std::string op = std::string("start ").append(url);
system(op.c_str());

You need add masksToBounds = true for combined between corderRadius shadowRadius.

button.layer.masksToBounds = false;

Pair would be a good stuff, to be a basic construction unit for a complex generics, for instance, this is from my code:

WeakHashMap<Pair<String, String>, String> map = ...

It is just the same as Haskell's Tuple

java

java -Xdebug -Xrunjdwp:transport=dt_socket,server=y,address=8001,suspend=y -jar target/cxf-boot-simple-0.0.1-SNAPSHOT.jar

address specifies the port at which it will allow to debug

Maven

**Debug Spring Boot app with Maven:

mvn spring-boot:run -Drun.jvmArguments=**"-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8001"

This work for me very simple just add attribute align="center". Tested on Bootstrap 4.

<!-- The slideshow -->
            <div class="carousel-inner" align="center">             
                <div class="carousel-item active">
                    <img src="image1.jpg" alt="no image" height="550">
                </div>
                <div class="carousel-item">
                    <img src="image2.jpg" alt="no image" height="550">
                </div>                
                <div class="carousel-item">
                    <img src="image3.png" alt="no image" height="550">
                </div>
             </div>

An iterative function to free your list:

void freeList(struct node* head)
{
   struct node* tmp;

   while (head != NULL)
    {
       tmp = head;
       head = head->next;
       free(tmp);
    }

}

What the function is doing is the follow:

1. check if head is NULL, if yes the list is empty and we just return

2. Save the head in a tmp variable, and make head point to the next node on your list (this is done in head = head->next

3. Now we can safely free(tmp) variable, and head just points to the rest of the list, go back to step 1

Try moving ValueDate:

select sum(CASE  
             WHEN ValueDate > @startMonthDate THEN cash 
              ELSE 0 
           END) 
 from Table a
where a.branch = p.branch 
  and a.transID = p.transID

(reformatted for clarity)

You might also consider using '0' instead of NULL, as you are doing a sum. It works correctly both ways, but is maybe more indicitive of what your intentions are.

Since curl 7.67.0 (2019-11-06) there is --no-progress-meter, which does exactly this, and nothing else. From the man page:

   --no-progress-meter
         Option to switch off the progress meter output without muting or
         otherwise affecting warning and informational messages like  -s,
         --silent does.

         Note  that  this  is the negated option name documented. You can
         thus use --progress-meter to enable the progress meter again.

         See also -v, --verbose and -s, --silent. Added in 7.67.0.

It's available in Ubuntu =20.04 and Debian =11 (Bullseye).

For a bit of history on curl's verbosity options, you can read Daniel Stenberg's blog post.

From the documentation for FileSystemWatcher:

The OnCreated event is raised as soon as a file is created. If a file is being copied or transferred into a watched directory, the OnCreated event will be raised immediately, followed by one or more OnChanged events.

So, if the copy fails, (catch the exception), add it to a list of files that still need to be moved, and attempt the copy during the OnChanged event. Eventually, it should work.

Something like (incomplete; catch specific exceptions, initialize variables, etc):

public static void listener_Created(object sender, FileSystemEventArgs e)
{
    Console.WriteLine
            (
                "File Created:\n"
               + "ChangeType: " + e.ChangeType
               + "\nName: " + e.Name
               + "\nFullPath: " + e.FullPath
            );
    try {
        File.Copy(e.FullPath, @"D:\levani\FolderListenerTest\CopiedFilesFolder\" + e.Name);
    }
    catch {
        _waitingForClose.Add(e.FullPath);
    }
    Console.Read();
}

public static void listener_Changed(object sender, FileSystemEventArgs e)
{
     if (_waitingForClose.Contains(e.FullPath))
     {
          try {
              File.Copy(...);
              _waitingForClose.Remove(e.FullPath);
          }
          catch {}
     }

}

There is a list of fragments in the fragmentMananger. Be aware that removing a fragment, does not make the list size decrease (the fragment entry just turn to null). Therefore, a valid solution would be:

public Fragment getTopFragment() {
 List<Fragment> fragentList = fragmentManager.getFragments();
 Fragment top = null;
  for (int i = fragentList.size() -1; i>=0 ; i--) {
   top = (Fragment) fragentList.get(i);
     if (top != null) {
       return top;
     }
   }
 return top;
}

Try to declare UseHttpGet over your method.

[ScriptMethod(UseHttpGet = true)]
public string HelloWorld()
{
    return "Hello World";
}

I tried all the answers above ,none resolved my question. So I create a new project and diff the build settings one by one. Only "Alternate Permissions Files" is different. The project build failed has a value armv7. Delete it then clean->build->archive . Succeed! Hope can solve you question

Your DOS command 2> nul

Read page Using command redirection operators. Besides the "2>" construct mentioned by Tanuki Software, it lists some other useful combinations.

My 5 (wrong) cents

'a' in "".join(['A']).lower()

UPDATE

Ouch, totally agree @jpp, I'll keep as an example of bad practice :(

import array
integerValue = array.array("I", 'y\xcc\xa6\xbb')[0]

Warning: the above is strongly platform-specific. Both the "I" specifier and the endianness of the string->int conversion are dependent on your particular Python implementation. But if you want to convert many integers/strings at once, then the array module does it quickly.

Best & Recommended way to set App Icon in Flutter.

I found one plugin to set app icon in flutter named flutter_launcher_icons. We can use this plugin to set the app icon in flutter.

1. Add this plugin in pubspec.yaml file in project root directory. Please check below code,

dependencies:    
 flutter:    
  sdk: flutter    
 cupertino_icons: ^0.1.2    
 flutter_launcher_icons: ^0.7.2+1**    

Save the file and run flutter pub get on terminal.

2. Create a folder assets in the root of the project in folder assets also create a folder icon and place your app icon inside this folder. I will recommend to user 1024x1024 app icon size. I have placed app icon inside icon folder and now I have app icon path as assets/icon/icon.png

3. Now, in pubspec.yaml add the below code,

flutter_icons:    
 android: "launcher_icon"    
 ios: true    
 image_path: "assets/icon/icon.png"

4. Save the file and run flutter pub get on terminal. After running command run second command as below

flutter pub run flutter_launcher_icons:main -f pubspec.yaml 

Then Run App

It varies on implementation and version, but usually it depends on the VM used (e.g. client or server, see -client and -server parameters) and on your system memory.

Often for client the default value is 1/4th of your physical memory or 1GB (whichever is smaller).

Also Java configuration options (command line parameters) can be "outsourced" to environment variables including the -Xmx, which can change the default (meaning specify a new default). Specifically the JAVA_TOOL_OPTIONS environment variable is checked by all Java tools and used if exists (more details here and here).

You can run the following command to see default values:

java -XX:+PrintFlagsFinal -version

It gives you a loooong list, -Xmx is in MaxHeapSize, -Xms is in InitialHeapSize. Filter your output (e.g. |grep on linux) or save it in a file so you can search in it.

I wrote my own library to achieve the intended behaviour in ios Maps app. It is a protocol oriented solution. So you don't need to inherit any base class instead create a sheet controller and configure as you wish. It also supports inner navigation/presentation with or without UINavigationController.

See below link for more details.

https://github.com/OfTheWolf/UBottomSheet

In PHP 7 anonymous objects can be created this way:

$res = new class {
    public $success = false;
};

https://www.php.net/manual/en/language.oop5.anonymous.php http://sandbox.onlinephpfunctions.com/code/ab774707a8219c0f35bdba49cc84228b580b52ee

Have you tried NetBeans 6? Zend Studio and NetBeans 6 are the best IDEs with PHP support you'll come across and NetBeans is free.

df.shape, where df is your DataFrame.

This would work:

declare @test varchar(100)
set @test = 'this   is  a    test'

while charindex('  ',@test  ) > 0
begin
   set @test = replace(@test, '  ', ' ')
end

select @test

An array isn't immutable by nature; you can't make it constant.

The nearest you can get is:

var letter_goodness = [...]float32 {.0817, .0149, .0278, .0425, .1270, .0223, .0202, .0609, .0697, .0015, .0077, .0402, .0241, .0675, .0751, .0193, .0009, .0599, .0633, .0906, .0276, .0098, .0236, .0015, .0197, .0007 }

Note the [...] instead of []: it ensures you get a (fixed size) array instead of a slice. So the values aren't fixed but the size is.

According to mongoDB documentation: "...That is, for MongoDB to use indexes to evaluate an $or expression, all the clauses in the $or expression must be supported by indexes."

So add indexes for your other fields and it will work. I had a similar problem and this solved it.

You can read more here: https://docs.mongodb.com/manual/reference/operator/query/or/

In case it helps someone, in my case I was using a custom package in release mode instead of in debug mode.

I just changed the package from "release" to "debug" and it worked.

From Python 3.7, there is a new math.remainder() function:

from math import remainder
print(remainder(26,7))

Output:

-2.0  # not 5

Note, as above, it's not the same as %.

Quoting the documentation:

math.remainder(x, y)

Return the IEEE 754-style remainder of x with respect to y. For finite x and finite nonzero y, this is the difference x - n*y, where n is the closest integer to the exact value of the quotient x / y. If x / y is exactly halfway between two consecutive integers, the nearest even integer is used for n. The remainder r = remainder(x, y) thus always satisfies abs(r) <= 0.5 * abs(y).

Special cases follow IEEE 754: in particular, remainder(x, math.inf) is x for any finite x, and remainder(x, 0) and remainder(math.inf, x) raise ValueError for any non-NaN x. If the result of the remainder operation is zero, that zero will have the same sign as x.

On platforms using IEEE 754 binary floating-point, the result of this operation is always exactly representable: no rounding error is introduced.

Issue29962 describes the rationale for creating the new function.

This answer applies to Jackson versions prior to 2+ (originally written for 1.8). See @SupunSameera's answer for a version that works with newer versions of Jackson.

The JSON terms for "node name" is "key." Since JsonNode#iterator() does not include keys, you need to iterate differently:

for (Map.Entry<String, JsonNode> elt : rootNode.fields())
{
    if ("foo".equals(elt.getKey()))
    {
        // bar
    }
}

If you only need to see the keys, you can simplify things a bit with JsonNode#fieldNames():

for (String key : rootNode.fieldNames())
{
    if ("foo".equals(key))
    {
        // bar
    }
}

And if you just want to find the node with key "foo", you can access it directly. This will yield better performance (constant-time lookup) and cleaner/clearer code than using a loop:

JsonNode foo = rootNode.get("foo");
if (foo != null)
{
    // frob that widget
}

to check button call event first we need to spy on method which will be called after button click so our first line will be spyOn spy methode take two arguments 1) component name 2) method to be spy i.e: 'onSubmit' remember not use '()' only name required then we need to make object of button to be clicked now we have to trigger the event handler on which we will add click event then we expect our code to call the submit method once

it('should call onSubmit method',() => {
    spyOn(component, 'onSubmit');
    let submitButton: DebugElement = 
    fixture.debugElement.query(By.css('button[type=submit]'));
    fixture.detectChanges();
    submitButton.triggerEventHandler('click',null);
    fixture.detectChanges();
    expect(component.onSubmit).toHaveBeenCalledTimes(1);
});

There are two ways you can count the number of rows.

$query = "SELECT count(*) as total from table1";
$prepare = $link->prepare($query);
$prepare->execute();
$row = $prepare->fetch(PDO::FETCH_ASSOC);
echo $row['total']; // This will return you a number of rows.

Or second way is

$query = "SELECT field1, field2 from table1";
$prepare = $link->prepare($query);
$prepare->execute();
$row = $prepare->fetch(PDO::FETCH_NUM);
echo $rows[0]; // This will return you a number of rows as well.

You can use this regex to get the yyyy-MM-dd format:

((?:19|20)\\d\\d)-(0?[1-9]|1[012])-([12][0-9]|3[01]|0?[1-9])

You can find example for date validation: How to validate date with regular expression.

A recursive algorithm that parses through an XmlDocument

Here is an example - Recursively reading an xml document and using regex to get contents

Here is another recursive example - http://www.java2s.com/Tutorial/CSharp/0540__XML/LoopThroughXmlDocumentRecursively.html

Use NupenGL Nuget package. It is actively updated and works with VS 2013 and 2015, whereas Freeglut Nuget package works with earlier versions of Visual Studio only (as of 10/14/2015).

Also, follow this blog post for easy instructions on working with OpenGL and Glut in VS.

User ID For element, then

document.getElementById('selValue').value=Your Value;
$('#selValue').selectpicker('refresh');

Use iloc to access by position (rather than label):

In [11]: df = pd.DataFrame([[1, 2], [3, 4]], ['a', 'b'], ['A', 'B'])

In [12]: df
Out[12]: 
   A  B
a  1  2
b  3  4

In [13]: df.iloc[0]  # first row in a DataFrame
Out[13]: 
A    1
B    2
Name: a, dtype: int64

In [14]: df['A'].iloc[0]  # first item in a Series (Column)
Out[14]: 1

I was getting this error due to the BasicHttpBinding not sending a compatible messageVersion to the service i was calling. My solution was to use a custom binding like below

 <bindings>
  <customBinding>
    <binding name="Soap11UserNameOverTransport" openTimeout="00:01:00" receiveTimeout="00:1:00" >
      <security authenticationMode="UserNameOverTransport">
      </security>          
      <textMessageEncoding messageVersion="Soap11WSAddressing10" writeEncoding="utf-8" />
      <httpsTransport></httpsTransport>
    </binding>
  </customBinding>      
</bindings>

if you really want to get rid of the scrollbar, split the information up into two separate pages.

Usability guidelines on scrollbars by Jakob Nielsen:

There are five essential usability guidelines for scrolling and scrollbars:

• Offer a scrollbar if an area has scrolling content. Don't rely on auto-scrolling or on dragging, which people might not notice.
• Hide scrollbars if all content is visible. If people see a scrollbar, they assume there's additional content and will be frustrated if they can't scroll.
• Comply with GUI standards and use scrollbars that look like scrollbars.
• Avoid horizontal scrolling on Web pages and minimize it elsewhere.
• Display all important information above the fold. Users often decide whether to stay or leave based on what they can see without scrolling. Plus they only allocate 20% of their attention below the fold.

To make your scrollbar only visible when it is needed (i.e. when there is content to scroll down to), use overflow: auto.

Found this on OzGrid courtesy of Mr. Aaron Blood - simple direct and works.

Code:
Cells(1, 3).Copy Cells(1, 1)
Cells(1, 1).Value = Cells(1, 3).Value

However, I kinda suspect you were just providing us with an oversimplified example to ask the question. If you just want to copy formats from one range to another it looks like this...

Code:
Cells(1, 3).Copy
    Cells(1, 1).PasteSpecial (xlPasteFormats)
    Application.CutCopyMode = False

These answers does not work if i don't have addToBackStack() added to my fragment transaction but, you can use:

getActivity().onBackPressed();

from your any fragment to go back one step;

When you set keys (primary or foreign) you are setting constraints on how they can be used, which in turn limits what you can do with them. If you really want to alter the column, you could re-create the table without the constraints, although I'd recommend against it. Generally speaking, if you have a situation in which you want to do something, but it is blocked by a constraint, it's best resolved by changing what you want to do rather than the constraint.

In Java 8 it is:

LocalDateTime.now()

and in case you need time zone info:

ZonedDateTime.now()

and in case you want to print fancy formatted string:

System.out.println(ZonedDateTime.now().format(DateTimeFormatter.RFC_1123_DATE_TIME))

It's used in case of a class method. Check this reference for further details.

EDIT: As clarified by Adrien, it's a convention. You can actually use anything but cls and self are used (PEP8).

In your example, because you use CurrentDB to execute your INSERT you've made it harder for yourself. Instead, this will work:

  Dim query As String
  Dim newRow As Long  ' note change of data type
  Dim db As DAO.Database

  query = "INSERT INTO InvoiceNumbers (date) VALUES (" & NOW() & ");"
  Set db = CurrentDB
  db.Execute(query)
  newRow = db.OpenRecordset("SELECT @@IDENTITY")(0)
  Set db = Nothing

I used to do INSERTs by opening an AddOnly recordset and picking up the ID from there, but this here is a lot more efficient. And note that it doesn't require ADO.

I am not sure about your DBMS. So, I created a temporary table in Redshift and from my experience, I think this query should return what you are looking for:

select min(Id), distinct MailId, EmailAddress, Name
    from yourTableName
    group by MailId, EmailAddress, Name

I see that I am using a GROUP BY clause but you still won't have two rows against any particular MailId.

pure JS (no JQuery)

document.addEventListener('keydown', function(e) {
    if(e.keyCode == 27){
      //add your code here
    }
});

Android

In Android the package name is in the AndroidManifest:

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    ...
    package="com.example.appname">

iOS

In iOS the package name is the bundle identifier in Info.plist:

<key>CFBundleIdentifier</key>
<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>

which is found in Runner.xcodeproj/project.pbxproj:

PRODUCT_BUNDLE_IDENTIFIER = com.example.appname;

Changing the name

The package name is found in more than one location, so to change the name you should search the whole project for occurrences of your old project name and change them all.

Android Studio and VS Code:

• Mac: Command + Shift + F
• Linux/Windows: Ctrl + Shift + F

Thanks to diegoveloper for help with iOS.

Update:

After coming back to this page a few different times, I'm thinking it's just easier and cleaner to start a new project with the right name and then copy the old files over.

The error TypeError: 'numpy.ndarray' object is not callable means that you tried to call a numpy array as a function. We can reproduce the error like so in the repl:

In [16]: import numpy as np

In [17]: np.array([1,2,3])()
---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
/home/user/<ipython-input-17-1abf8f3c8162> in <module>()
----> 1 np.array([1,2,3])()

TypeError: 'numpy.ndarray' object is not callable

If we are to assume that the error is indeed coming from the snippet of code that you posted (something that you should check,) then you must have reassigned either pd.rolling_mean or pd.rolling_std to a numpy array earlier in your code.

What I mean is something like this:

In [1]: import numpy as np

In [2]: import pandas as pd

In [3]: pd.rolling_mean(np.array([1,2,3]), 20, min_periods=5) # Works
Out[3]: array([ nan,  nan,  nan])

In [4]: pd.rolling_mean = np.array([1,2,3])

In [5]: pd.rolling_mean(np.array([1,2,3]), 20, min_periods=5) # Doesn't work anymore...
---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
/home/user/<ipython-input-5-f528129299b9> in <module>()
----> 1 pd.rolling_mean(np.array([1,2,3]), 20, min_periods=5) # Doesn't work anymore...

TypeError: 'numpy.ndarray' object is not callable

So, basically you need to search the rest of your codebase for pd.rolling_mean = ... and/or pd.rolling_std = ... to see where you may have overwritten them.

You (or Joomla) is likely including this file multiple times. Enclose your function in a conditional block:

if (!function_exists('parseDate')) {
    // ... proceed to declare your function
}

I have a similar problem (at least I think it is similar). In one of the replies here the solution is as follows:

select
    A.*
from
    table_A A
inner join table_B B
    on A.id = B.id
where
    B.tag = 'chair'

That WHERE clause I would like to be:

WHERE B.tag = A.<col_name>

or, in my specific case:

WHERE B.val BETWEEN A.val1 AND A.val2

More detailed:

Table A carries status information of a fleet of equipment. Each status record carries with it a start and stop time of that status. Table B carries regularly recorded, timestamped data about the equipment, which I want to extract for the duration of the period indicated in table A.

 <script type="text/javascript">

    var options={
            format: 'mm/dd/yyyy',
            todayHighlight: true,
            autoclose: true,
        };

    $('#datetimepicker').datepicker(options);

</script>

Use xsd:include to bring in an XSD from the same or no namespace.

Use xsd:import to bring in an XSD from a different namespace.

mongoimport --jsonArray  -d DatabaseN -c collectionName /filePath/filename.json

This is the first post on google so I thought I'd post different ways that are available and how they compare. Unfortunately I can't figure out how to create a table here, so it's an image. The code for each is below the image using fully qualified names.

My.Application.Info.DirectoryPath

Environment.CurrentDirectory

System.Windows.Forms.Application.StartupPath

AppDomain.CurrentDomain.BaseDirectory

System.Reflection.Assembly.GetExecutingAssembly.Location

System.Reflection.Assembly.GetExecutingAssembly.CodeBase

New System.UriBuilder(System.Reflection.Assembly.GetExecutingAssembly.CodeBase)

Path.GetDirectoryName(Uri.UnescapeDataString((New System.UriBuilder(System.Reflection.Assembly.GetExecutingAssembly.CodeBase).Path)))

Uri.UnescapeDataString((New System.UriBuilder(System.Reflection.Assembly.GetExecutingAssembly.CodeBase).Path))

For what I understand, VSCode is not in AppData anymore.

So Set the default git editor by executing that command in a command prompt window:

git config --global core.editor "'C:\Program Files (x86)\Microsoft VS Code\code.exe' -w"

The parameter -w, --wait is to wait for window to be closed before returning. Visual Studio Code is base on Atom Editor. if you also have atom installed execute the command atom --help. You will see the last argument in the help is wait.

Next time you do a git rebase -i HEAD~3 it will popup Visual Studio Code. Once VSCode is close then Git will take back the lead.

Note: My current version of VSCode is 0.9.2

I hope that help.

Edit: If you know which package manager was used to install, it is best to uninstall with the same package manager. Examples for apt, make, yum are in other answers.

This is a manual approach:

Running which node will return something like /path/bin/node.

Then run cd /path

This is all that is added by Node.JS.

rm -r bin/node bin/node-waf include/node lib/node lib/pkgconfig/nodejs.pc share/man/man1/node.1

Now the only thing I don't know about is npm and what it has installed. If you install npm again into a custom path that starts off empty, then you can see what it adds and then you will be able to make a list for npm similar to the above list I made for node.

This can be achieved through LINQ with grouping, here a list of items pointed as a data source to the actual grid view. Sample pseudo code which could help coding the actual.

var tabelDetails =(from li in dc.My_table
    join m in dc.Table_One on li.ID equals m.ID
    join c in dc.Table_two on li.OtherID equals c.ID
    where //Condition
group new { m, li, c } by new
{
    m.ID,
    m.Name
} into g
select new
{
    g.Key.ID,
    Name = g.Key.FullName,
    sponsorBonus= g.Where(s => s.c.Name == "sponsorBonus").Count(),
    pairingBonus = g.Where(s => s.c.Name == "pairingBonus").Count(),
    staticBonus = g.Where(s => s.c.Name == "staticBonus").Count(),   
    leftBonus = g.Where(s => s.c.Name == "leftBonus").Count(),  
    rightBonus = g.Where(s => s.c.Name == "rightBonus").Count(),  
    Total = g.Count()  //Row wise Total
}).OrderBy(t => t.Name).ToList();

tabelDetails.Insert(tabelDetails.Count(), new  //This data will be the last row of the grid
{
    Name = "Total",  //Column wise total
    sponsorBonus = tabelDetails.Sum(s => s.sponsorBonus),
    pairingBonus = tabelDetails.Sum(s => s.pairingBonus),
    staticBonus = tabelDetails.Sum(s => s.staticBonus),
    leftBonus = tabelDetails.Sum(s => s.leftBonus),
    rightBonus = tabelDetails.Sum(s => s.rightBonus ),
    Total = tabelDetails.Sum(s => s.Total)
});

Also DevExpress have Charts (see DevExpress.Com).

I experienced this error when I ran a find condition on a JSONArray within a for loop. The problem I faced was the result of one of the values in the for loop returning null. Hence, when I tried to access a property on that it failed.

So if you are doing anything within JSONArrays where you are not sure of the data source and its integrity I thinks its a good habit to deal with null and undefined exceptions in this case.

I fixed it by checking for null on the returned value of find on the JSONArray and handling exceptions appropriately.

Thought this might help.

SQL does not do that. The order of the tuples in the table are not ordered by insertion date. A lot of people include a column that stores that date of insertion in order to get around this issue.

I had the same issue, what worked for me:

1. Copy your folders and files to another place, say to a folder (I changed my files recently and the commitment failed and led to the addressed problem)
2. check out a new working copy
3. copy your changed files from folder to your working copy and override existing files. Commiting / Updating should work now

Consider using a higher dimensional datastructure (a Panel), rather than storing an array in your column:

In [11]: p = pd.Panel({'df': df, 'csc': csc})

In [12]: p.df
Out[12]: 
   0  1  2
0  1  2  3
1  4  5  6
2  7  8  9

In [13]: p.csc
Out[13]: 
   0  1  2
0  0  1  0
1  0  0  1
2  1  0  0

Look at cross-sections etc, etc, etc.

In [14]: p.xs(0)
Out[14]: 
   csc  df
0    0   1
1    1   2
2    0   3

See the docs for more on Panels.

It's always dangerous to have NULL in the IN list - it often behaves as expected for the IN but not for the NOT IN:

IF 1 NOT IN (1, 2, 3, NULL) PRINT '1 NOT IN (1, 2, 3, NULL)'
IF 1 NOT IN (2, 3, NULL) PRINT '1 NOT IN (2, 3, NULL)'
IF 1 NOT IN (2, 3) PRINT '1 NOT IN (2, 3)' -- Prints
IF 1 IN (1, 2, 3, NULL) PRINT '1 IN (1, 2, 3, NULL)' -- Prints
IF 1 IN (2, 3, NULL) PRINT '1 IN (2, 3, NULL)'
IF 1 IN (2, 3) PRINT '1 IN (2, 3)'

With df.plot()

Normally when quickly plotting a DataFrame, I use pd.DataFrame.plot(). This takes the index as the x value, the value as the y value and plots each column separately with a different color. A DataFrame in this form can be achieved by using set_index and unstack.

import matplotlib.pyplot as plt
import pandas as pd

carat = [5, 10, 20, 30, 5, 10, 20, 30, 5, 10, 20, 30]
price = [100, 100, 200, 200, 300, 300, 400, 400, 500, 500, 600, 600]
color =['D', 'D', 'D', 'E', 'E', 'E', 'F', 'F', 'F', 'G', 'G', 'G',]

df = pd.DataFrame(dict(carat=carat, price=price, color=color))

df.set_index(['color', 'carat']).unstack('color')['price'].plot(style='o')
plt.ylabel('price')

With this method you do not have to manually specify the colors.

This procedure may make more sense for other data series. In my case I have timeseries data, so the MultiIndex consists of datetime and categories. It is also possible to use this approach for more than one column to color by, but the legend is getting a mess.

Also see...

How can I tell if I have uncommitted work in an Oracle transaction?

For me this worked

Add these attributes to your EditText

android:focusable="true"
android:focusableInTouchMode="true"

After this in your code you can simply write

editText.clearFocus()

Consider the following:

class Bad(object):
    def __eq__(self, other):
        return True

c = Bad()
c is None # False, equivalent to id(c) == id(None)
c == None # True, equivalent to c.__eq__(None)

Adding msecs was the better option, Thanks. Here is my amendment using this with Python 3.5.3 in Blender

import logging
logging.basicConfig(level=logging.DEBUG, format='%(asctime)s.%(msecs)03d %(levelname)s:\t%(message)s', datefmt='%Y-%m-%d %H:%M:%S')
log = logging.getLogger(__name__)
log.info("Logging Info")
log.debug("Logging Debug")

var funcs = [];
for (var i = 0; i < 3; i++) {      // let's create 3 functions
  funcs[i] = function(param) {          // and store them in funcs
    console.log("My value: " + param); // each should log its value.
  };
}
for (var j = 0; j < 3; j++) {
  funcs[j](j);                      // and now let's run each one to see with j
}

Fileservice.cs:

public class FileService : IFileService
{
    private readonly IWebHostEnvironment env;

    public FileService(IWebHostEnvironment env)
    {
        this.env = env;
    }

    public string Upload(IFormFile file)
    {
        var uploadDirecotroy = "uploads/";
        var uploadPath = Path.Combine(env.WebRootPath, uploadDirecotroy);

        if (!Directory.Exists(uploadPath))
            Directory.CreateDirectory(uploadPath);

        var fileName = Guid.NewGuid() + Path.GetExtension(file.FileName);
        var filePath = Path.Combine(uploadPath, fileName);

        using (var strem = File.Create(filePath))
        {
            file.CopyTo(strem);
        }
        return fileName;
    }
}

IFileService:

namespace studentapps.Services
{
    public interface IFileService
    {
        string Upload(IFormFile file);
    }
}

StudentController:

[HttpGet]
public IActionResult Create()
{
    var student = new StudentCreateVM();
    student.Colleges = dbContext.Colleges.ToList();
    return View(student);
}

[HttpPost]
public IActionResult Create([FromForm] StudentCreateVM vm)
{
    Student student = new Student()
    {
        DisplayImage = vm.DisplayImage.FileName,
        Name = vm.Name,
        Roll_no = vm.Roll_no,
        CollegeId = vm.SelectedCollegeId,
    };


    if (ModelState.IsValid)
    {
        var fileName = fileService.Upload(vm.DisplayImage);
        student.DisplayImage = fileName;
        getpath = fileName;

        dbContext.Add(student);
        dbContext.SaveChanges();
        TempData["message"] = "Successfully Added";
    }
    return RedirectToAction("Index");
}

Since you say "semantically equivalent" I assume you mean that you want to do more than just literally verify that the xml outputs are (string) equals, and that you'd want something like

<foo> some stuff here</foo></code>

and

<foo>some stuff here</foo></code>

do read as equivalent. Ultimately it's going to matter how you're defining "semantically equivalent" on whatever object you're reconstituting the message from. Simply build that object from the messages and use a custom equals() to define what you're looking for.

You can use the BlockingCollection and ConcurrentQueue in the System.Collections.Concurrent Namespace

 public class ProducerConsumerQueue<T> : BlockingCollection<T>
{
    /// <summary>
    /// Initializes a new instance of the ProducerConsumerQueue, Use Add and TryAdd for Enqueue and TryEnqueue and Take and TryTake for Dequeue and TryDequeue functionality
    /// </summary>
    public ProducerConsumerQueue()  
        : base(new ConcurrentQueue<T>())
    {
    }

  /// <summary>
  /// Initializes a new instance of the ProducerConsumerQueue, Use Add and TryAdd for Enqueue and TryEnqueue and Take and TryTake for Dequeue and TryDequeue functionality
  /// </summary>
  /// <param name="maxSize"></param>
    public ProducerConsumerQueue(int maxSize)
        : base(new ConcurrentQueue<T>(), maxSize)
    {
    }



}

Filezilla is available for Linux. If you are using Ubuntu:

sudo apt-get install filezilla

Otherwise, you can download it from the Filezilla website.

FWIW, this config worked for me:

location = /logpush.html {
  if ($request_method = POST) {
    access_log /var/log/nginx/push.log push_requests;
    proxy_pass $scheme://127.0.0.1/logsink;
    break;
  }   
  return 200 $scheme://$host/serviceup.html;
}   
#
location /logsink {
  return 200;
}

If using 3rd Pary Libaries is ok cyclops-react defines Lazy extended collections with this functionality built in. For example we could simply write

ListX myListToParse;

ListX myFinalList = myListToParse.filter(elt -> elt != null) .map(elt -> doSomething(elt));

myFinalList is not evaluated until first access (and there after the materialized list is cached and reused).

[Disclosure I am the lead developer of cyclops-react]

From the output of java -X:

    -Xloggc:<file>    log GC status to a file with time stamps

Documented here:

-Xloggc:filename

Sets the file to which verbose GC events information should be redirected for logging. The information written to this file is similar to the output of -verbose:gc with the time elapsed since the first GC event preceding each logged event. The -Xloggc option overrides -verbose:gc if both are given with the same java command.

Example:

    -Xloggc:garbage-collection.log

So the output looks something like this:

0.590: [GC 896K->278K(5056K), 0.0096650 secs]
0.906: [GC 1174K->774K(5056K), 0.0106856 secs]
1.320: [GC 1670K->1009K(5056K), 0.0101132 secs]
1.459: [GC 1902K->1055K(5056K), 0.0030196 secs]
1.600: [GC 1951K->1161K(5056K), 0.0032375 secs]
1.686: [GC 1805K->1238K(5056K), 0.0034732 secs]
1.690: [Full GC 1238K->1238K(5056K), 0.0631661 secs]
1.874: [GC 62133K->61257K(65060K), 0.0014464 secs]

Firstly, the below method doesn't compile as it is missing the return type and it should be Long.MAX_VALUE in place of Long.Max_value.

public static boolean isBiggerThanMaxLong(long value) {
      return value > Long.Max_value;
}

The above method can never return true as you are comparing a long value with Long.MAX_VALUE , see the method signature you can pass only long there.Any long can be as big as the Long.MAX_VALUE, it can't be bigger than that.

You can try something like this with BigInteger class :

public static boolean isBiggerThanMaxLong(BigInteger l){
    return l.compareTo(BigInteger.valueOf(Long.MAX_VALUE))==1?true:false;
}

The below code will return true :

BigInteger big3 = BigInteger.valueOf(Long.MAX_VALUE).
                  add(BigInteger.valueOf(Long.MAX_VALUE));
System.out.println(isBiggerThanMaxLong(big3)); // prints true

As you want to specifically search for a wildcard character you need to escape that

This is done by adding the ESCAPE clause to your LIKE expression. The character that is specified with the ESCAPE clause will "invalidate" the following wildcard character.

You can use any character you like (just not a wildcard character). Most people use a \ because that is what many programming languages also use

So your query would result in:

select * 
from Manager
where managerid LIKE '\_%' escape '\'
and managername like '%\_%' escape '\';

But you can just as well use any other character:

select * 
from Manager
where managerid LIKE '#_%' escape '#'
and managername like '%#_%' escape '#';

Here is an SQLFiddle example: http://sqlfiddle.com/#!6/63e88/4

Very simple by using the string format

on .ToSTring("") :

• if you use "hh" ->> The hour, using a 12-hour clock from 01 to 12.

• if you use "HH" ->> The hour, using a 24-hour clock from 00 to 23.

• if you add "tt" ->> The Am/Pm designator.

exemple converting from 23:12 to 11:12 Pm :

DateTime d = new DateTime(1, 1, 1, 23, 12, 0);
var res = d.ToString("hh:mm tt");   // this show  11:12 Pm
var res2 = d.ToString("HH:mm");  // this show  23:12

Console.WriteLine(res);
Console.WriteLine(res2);

Console.Read();

wait a second that is not all you need to care about something else is the system Culture because the same code executed on windows with other langage especialy with difrent culture langage will generate difrent result with the same code

exemple of windows set to Arabic langage culture will show like that :

// 23:12 ?

? means Evening (first leter of ????) .

in another system culture depend on what is set on the windows regional and language option, it will show // 23:12 du.

you can change between different format on windows control panel under windows regional and language -> current format (combobox) and change... apply it do a rebuild (execute) of your app and watch what iam talking about.

so who can I force showing Am and Pm Words in English event if the culture of the current system isn't set to English ?

easy just by adding two lines : ->

the first step add using System.Globalization; on top of your code

and modifing the Previous code to be like this :

DateTime d = new DateTime(1, 1, 1, 23, 12, 0);
var res = d.ToString("HH:mm tt", CultureInfo.InvariantCulture); // this show  11:12 Pm

InvariantCulture => using default English Format.

another question I want to have the pm to be in Arabic or specific language, even if I use windows set to English (or other language) regional format?

Soution for Arabic Exemple :

DateTime d = new DateTime(1, 1, 1, 23, 12, 0);
var res = d.ToString("HH:mm tt", CultureInfo.CreateSpecificCulture("ar-AE")); 

this will show // 23:12 ?

event if my system is set to an English region format. you can change "ar-AE" if you want to another language format. there is a list of each language and its format.

exemples : ar ar-SA Arabic ar-BH ar-BH Arabic (Bahrain) ar-DZ ar-DZ Arabic (Algeria) ar-EG ar-EG Arabic (Egypt)

All the above answers are of great technical help. Recently I also faced the same issue due to a blunder I did with my project.

I created venv inside my project root by issuing the command python -m venv . and then for some reason I didn't like the name of my project. So I changed it and boom.

pip started behaving erratically and I searched dozens of forums thinking some corrupt file had crept inside my python installation. I didn't find any solution there that could help me. Finally, I opened my activate.bat file to know how this script was changing my environment and there I saw the old project name mentioned. Eureka!

I reverted back to my old project name and everything became smooth. Without any reinstallation. Without any change request to office admin. Without any delay.

SOLUTION: If you have changed the name of your project after creating your venv, you might face this error. Reverting the new name into the old name will save your time and effort. Also please don't forget to upvote if this answer helped.

That's not possible. localhost always defaults to the loopback device on the local operating system.
As your virtual machine runs its own operating system it has its own loopback device which you cannot access from the outside.

If you want to access it e.g. in a browser, connect to it using the local IP instead:

http://192.168.180.1:8000

This is just an example of course, you can find out the actual IP by issuing an ifconfig command on a shell in the guest operating system.

You can use the Time.String() method to convert a time.Time to a string. This uses the format string "2006-01-02 15:04:05.999999999 -0700 MST".

If you need other custom format, you can use Time.Format(). For example to get the timestamp in the format of yyyy-MM-dd HH:mm:ss use the format string "2006-01-02 15:04:05".

Example:

t := time.Now()
fmt.Println(t.String())
fmt.Println(t.Format("2006-01-02 15:04:05"))

Output (try it on the Go Playground):

2009-11-10 23:00:00 +0000 UTC
2009-11-10 23:00:00

Note: time on the Go Playground is always set to the value seen above. Run it locally to see current date/time.

Also note that using Time.Format(), as the layout string you always have to pass the same time –called the reference time– formatted in a way you want the result to be formatted. This is documented at Time.Format():

Format returns a textual representation of the time value formatted according to layout, which defines the format by showing how the reference time, defined to be

Mon Jan 2 15:04:05 -0700 MST 2006

would be displayed if it were the value; it serves as an example of the desired output. The same display rules will then be applied to the time value.

Bcrypt is a one-way hashing algorithm, you can't decrypt hashes. Use password_verify to check whether a password matches the stored hash:

<?php
// See the password_hash() example to see where this came from.
$hash = '$2y$07$BCryptRequires22Chrcte/VlQH0piJtjXl.0t1XkA8pw9dMXTpOq';

if (password_verify('rasmuslerdorf', $hash)) {
    echo 'Password is valid!';
} else {
    echo 'Invalid password.';
}

In your case, run the SQL query using only the username:

$sql_script = 'SELECT * FROM USERS WHERE username=?';

And do the password validation in PHP using a code that is similar to the example above.

The way you are constructing the query is very dangerous. If you don't parameterize the input properly, the code will be vulnerable to SQL injection attacks. See this Stack Overflow answer on how to prevent SQL injection.

ul {_x000D_
  list-style-type: none;_x000D_
  padding-left: 0px;_x000D_
}_x000D_
_x000D_
ul li span {_x000D_
  float: left;_x000D_
  width: 40px;_x000D_
}

<ul>_x000D_
  <li><span></span> The lazy dog.</li>_x000D_
  <li><span>AND</span> The lazy cat.</li>_x000D_
  <li><span>OR</span> The active goldfish.</li>_x000D_
</ul>

Like Eoin said, you need to put a non-breaking space into your "empty" spans, but you can't assign a width to an inline element, only padding/margin so you'll need to make it float so that you can give it a width.

For a jsfiddle example, see http://jsfiddle.net/laurensrietveld/JZ2Lg/

This is a recursive version that works with letter drives as well as UNC. I used the error catching to implement it but if anyone can do one without, I would be interested to see it. This approach works from the branches to the root so it will be somewhat usable when you don't have permissions in the root and lower parts of the directory tree.

' Reverse create directory path. This will create the directory tree from the top    down to the root.
' Useful when working on network drives where you may not have access to the directories close to the root
Sub RevCreateDir(strCheckPath As String)
    On Error GoTo goUpOneDir:
    If Len(Dir(strCheckPath, vbDirectory)) = 0 And Len(strCheckPath) > 2 Then
        MkDir strCheckPath
    End If
    Exit Sub
' Only go up the tree if error code Path not found (76).
goUpOneDir:
    If Err.Number = 76 Then
        Call RevCreateDir(Left(strCheckPath, InStrRev(strCheckPath, "\") - 1))
        Call RevCreateDir(strCheckPath)
    End If
End Sub

Nothing worked. but this one perfectly

google and download Jlayer library first.

import javazoom.jl.player.Player;
import java.io.FileInputStream;

public class MusicPlay {

  public static void main(String[] args)  {

    try{

      FileInputStream fs = new FileInputStream("audio_file_path.mp3");
      Player player = new Player(fs);
      player.play();

    } catch (Exception e){
      // catch exceptions.
    }

  }
}

Old version includes kafka-simple-consumer-shell.sh (https://kafka.apache.org/downloads#1.1.1) which is convenient since we do not need cltr+c to exit.

For example

kafka-simple-consumer-shell.sh --broker-list $BROKERIP:$BROKERPORT --topic $TOPIC1 --property print.key=true --property key.separator=":"  --no-wait-at-logend

You need to set the height on the <html> and <body> elements as well; otherwise, they will only be large enough to fit the content. For example:

<!DOCTYPE html>_x000D_
<title>Example of 100% width and height</title>_x000D_
<style>_x000D_
html, body { height: 100%; margin: 0; }_x000D_
div { height: 100%; width: 100%; background: red; }_x000D_
</style>_x000D_
<div></div>

Using the C# language constructs, you cannot explicitly call the base function from outside the scope of A or B. If you really need to do that, then there is a flaw in your design - i.e. that function shouldn't be virtual to begin with, or part of the base function should be extracted to a separate non-virtual function.

You can from inside B.X however call A.X

class B : A
{
  override void X() { 
    base.X();
    Console.WriteLine("y"); 
  }
}

But that's something else.

As Sasha Truf points out in this answer, you can do it through IL. You can probably also accomplish it through reflection, as mhand points out in the comments.

Yes, you can put arrays in sessions, example:

$_SESSION['name_here'] = $your_array;

Now you can use the $_SESSION['name_here'] on any page you want but make sure that you put the session_start() line before using any session functions, so you code should look something like this:

 session_start();
 $_SESSION['name_here'] = $your_array;

Possible Example:

 session_start();
 $_SESSION['name_here'] = $_POST;

Now you can get field values on any page like this:

 echo $_SESSION['name_here']['field_name'];

As for the second part of your question, the session variables remain there unless you assign different array data:

 $_SESSION['name_here'] = $your_array;

Session life time is set into php.ini file.

More Info Here

Maybe not safe and pretty but if you must:

class string
{
    private $Text;
    public function __construct($value)
    {
        $this->Text = $value;
    }

    public function __toString()
    {
        return $this->Text;
    }
}

function Test123(string $s)
{
    echo $s;
}

Test123(new string("Testing"));

For parsing command line arguments on posix systems, the standard is to use the getopt() family of library routines to handle command line arguments.

A good reference is the GNU getopt manual

This variable can be saved in json. For example envsettings.json with content as below

  {
   // Possible string values reported below. When empty it use ENV variable value or 
     // Visual Studio setting.
     // - Production
     // - Staging
     // - Test
     // - Development

   "ASPNETCORE_ENVIRONMENT": "Development"
  }

Later modify your program.cs as below

  public class Program
  {
    public static IConfiguration Configuration { get; set; }
    public static void Main(string[] args)
    {
        var currentDirectoryPath = Directory.GetCurrentDirectory();
        var envSettingsPath = Path.Combine(currentDirectoryPath, "envsettings.json");
        var envSettings = JObject.Parse(File.ReadAllText(envSettingsPath));
        var environmentValue = envSettings["ASPNETCORE_ENVIRONMENT"].ToString();

        var builder = new ConfigurationBuilder()
               .SetBasePath(Directory.GetCurrentDirectory())
               .AddJsonFile("appsettings.json");

        Configuration = builder.Build();
          var webHostBuilder = new WebHostBuilder()
            .UseKestrel()
            .CaptureStartupErrors(true)
            .UseContentRoot(currentDirectoryPath)
            .UseIISIntegration()
            .UseStartup<Startup>();

        // If none is set it use Operative System hosting enviroment
        if (!string.IsNullOrWhiteSpace(environmentValue))
        {
            webHostBuilder.UseEnvironment(environmentValue);
        }

        var host = webHostBuilder.Build();

        host.Run();
     }
 }

This way it will always be included in publish and you can change to required value according to environment where website is hosted. This method can also be used in console app as the changes are in Program.cs

In your test, you are comparing the two TestParent beans, not the single TestedChild bean.

Also, Spring proxies your @Configuration class so that when you call one of the @Bean annotated methods, it caches the result and always returns the same object on future calls.

See here:

• How does Spring @Configuration cache references to beans

I would suggest WMIC Service WHERE "Name = 'SericeName'" GET Started

or WMIC Service WHERE "Name = 'ServiceName'" GET ProcessId (ProcessId will be zero if service isn't started)

You can set the error level based on whether the former returns "TRUE" or the latter returns nonzero

Pointers can be used like any other iterators:

int x[3] = {1, 2, 3};
std::vector<int> v(x, x + 3);
test(v)

Well, the only thing I can make it work is like so:

servers: >
    dev.example.com,
    another.example.com

@Value("${servers}")
private String[] array;

And dont forget the @Configuration above your class....

Without the "," separation, no such luck...

Works too (boot 1.5.8 versie)

servers: 
       dev.example.com,
       another.example.com

To create multiple sub-folders

mkdir -p parentfolder/{subfolder1,subfolder2,subfolder3}

See my cross browser compatible resizer.

    <!doctype html>_x000D_
    <html xmlns="http://www.w3.org/1999/xhtml">_x000D_
    <head>_x000D_
        <title>resizer</title>_x000D_
        <meta name="author" content="Andrej Hristoliubov [email protected]">_x000D_
        <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />_x000D_
        <script type="text/javascript" src="https://rawgit.com/anhr/resizer/master/Common.js"></script>_x000D_
        <script type="text/javascript" src="https://rawgit.com/anhr/resizer/master/resizer.js"></script>_x000D_
        <style>_x000D_
            .element {_x000D_
                border: 1px solid #999999;_x000D_
                border-radius: 4px;_x000D_
                margin: 5px;_x000D_
                padding: 5px;_x000D_
            }_x000D_
        </style>_x000D_
        <script type="text/javascript">_x000D_
            function onresize() {_x000D_
                var element1 = document.getElementById("element1");_x000D_
                var element2 = document.getElementById("element2");_x000D_
                var element3 = document.getElementById("element3");_x000D_
                var ResizerY = document.getElementById("resizerY");_x000D_
                ResizerY.style.top = element3.offsetTop - 15 + "px";_x000D_
                var topElements = document.getElementById("topElements");_x000D_
                topElements.style.height = ResizerY.offsetTop - 20 + "px";_x000D_
                var height = topElements.clientHeight - 32;_x000D_
                if (height < 0)_x000D_
                    height = 0;_x000D_
                height += 'px';_x000D_
                element1.style.height = height;_x000D_
                element2.style.height = height;_x000D_
            }_x000D_
            function resizeX(x) {_x000D_
                //consoleLog("mousemove(X = " + e.pageX + ")");_x000D_
                var element2 = document.getElementById("element2");_x000D_
                element2.style.width =_x000D_
                    element2.parentElement.clientWidth_x000D_
                    + document.getElementById('rezizeArea').offsetLeft_x000D_
                    - x_x000D_
                    + 'px';_x000D_
            }_x000D_
            function resizeY(y) {_x000D_
                //consoleLog("mousemove(Y = " + e.pageY + ")");_x000D_
                var element3 = document.getElementById("element3");_x000D_
                var height =_x000D_
                    element3.parentElement.clientHeight_x000D_
                    + document.getElementById('rezizeArea').offsetTop_x000D_
                    - y_x000D_
                ;_x000D_
                //consoleLog("mousemove(Y = " + e.pageY + ") height = " + height + " element3.parentElement.clientHeight = " + element3.parentElement.clientHeight);_x000D_
                if ((height + 100) > element3.parentElement.clientHeight)_x000D_
                    return;//Limit of the height of the elemtnt 3_x000D_
                element3.style.height = height + 'px';_x000D_
                onresize();_x000D_
            }_x000D_
            var emailSubject = "Resizer example error";_x000D_
        </script>_x000D_
    </head>_x000D_
    <body>_x000D_
        <div id='Message'></div>_x000D_
        <h1>Resizer</h1>_x000D_
        <p>Please see example of resizing of the HTML element by mouse dragging.</p>_x000D_
        <ul>_x000D_
            <li>Drag the red rectangle if you want to change the width of the Element 1 and Element 2</li>_x000D_
            <li>Drag the green rectangle if you want to change the height of the Element 1 Element 2 and Element 3</li>_x000D_
            <li>Drag the small blue square at the left bottom of the Element 2, if you want to resize of the Element 1 Element 2 and Element 3</li>_x000D_
        </ul>_x000D_
        <div id="rezizeArea" style="width:1000px; height:250px; overflow:auto; position: relative;" class="element">_x000D_
            <div id="topElements" class="element" style="overflow:auto; position:absolute; left: 0; top: 0; right:0;">_x000D_
                <div id="element2" class="element" style="width: 30%; height:10px; float: right; position: relative;">_x000D_
                    Element 2_x000D_
                    <div id="resizerXY" style="width: 10px; height: 10px; background: blue; position:absolute; left: 0; bottom: 0;"></div>_x000D_
                    <script type="text/javascript">_x000D_
                        resizerXY("resizerXY", function (e) {_x000D_
                                resizeX(e.pageX + 10);_x000D_
                                resizeY(e.pageY + 50);_x000D_
                            });_x000D_
                    </script>_x000D_
                </div>_x000D_
                <div id="resizerX" style="width: 10px; height:100%; background: red; float: right;"></div>_x000D_
                <script type="text/javascript">_x000D_
                    resizerX("resizerX", function (e) {_x000D_
                        resizeX(e.pageX + 25);_x000D_
                    });_x000D_
                </script>_x000D_
                <div id="element1" class="element" style="height:10px; overflow:auto;">Element 1</div>_x000D_
            </div>_x000D_
            <div id="resizerY" style="height:10px; position:absolute; left: 0; right:0; background: green;"></div>_x000D_
            <script type="text/javascript">_x000D_
                resizerY("resizerY", function (e) {_x000D_
                    resizeY(e.pageY + 25);_x000D_
                });_x000D_
            </script>_x000D_
            <div id="element3" class="element" style="height:100px; position:absolute; left: 0; bottom: 0; right:0;">Element 3</div>_x000D_
        </div>_x000D_
        <script type="text/javascript">_x000D_
            onresize();_x000D_
        </script>_x000D_
    </body>_x000D_
    </html>

Also see my example of resizer

If you also want it to be a command you can reference without remembering the arguments, you could simply alias it:

alias df-gb='df -BG'

So if you type:

df-gb

into a terminal, you'll get your intended output of the disk usage in GB.

EDIT: or even use just df -h to get it in a standard, human readable format.

http://www.thegeekstuff.com/2012/05/df-examples/

If the server accessible with RPC (basically, if you can access a shared folder on it), you could free some memory and thus let the RDP service work properly. The following windows native commands can be used:

To get the list of memory consuming tasks:

tasklist /S <remote_server> /V /FI "MEMUSAGE gt 10000"

To kill a task by its name:

taskkill /S <remote_server> /IM <process_image_name> /F

To show the list of desktop sessions:

qwinsta.exe /SERVER:<remote_server>

To close an old abandoned desktop session:

logoff <session_id> /SERVER:<remote_server> 

After some memory is freed, the RDP should start working.

JS Code:

<script type="text/javascript">
         function ShowCurrentTime(name) {
         PageMethods.GetCurrentTime(name, OnSuccess);
         }
         function OnSuccess(response, userContext, methodName) {
          alert(response);
         }
</script>

HTML Code:

<asp:ImageButton ID="IMGBTN001" runat="server" ImageUrl="Images/ico/labaniat.png"
class="img-responsive em-img-lazy" OnClientClick="ShowCurrentTime('01')" />

Code Behind C#

[System.Web.Services.WebMethod]
public static string GetCurrentTime(string name)
{
    return "Hello " + name + Environment.NewLine + "The Current Time is: "
            + DateTime.Now.ToString();
}

You could calculate the determinant of the matrix which is recursive and then form the adjoined matrix

Here is a short tutorial

I think this only works for square matrices

Another way of computing these involves gram-schmidt orthogonalization and then transposing the matrix, the transpose of an orthogonalized matrix is its inverse!

It is called 'favicon' and you need to add below code to the header section of your website.

Simply add this to the <head> section.

<link rel="icon" href="/your_path_to_image/favicon.jpg">

As the accepted solution of @Shane is not supported in RStudio (see here) as of now (Sep 2015), I would like to add an advice to @James Thompson answer regarding workflow:

If you use SumatraPDF as viewer you do not need to close the PDF file before making changes to it. Sumatra does not put a opened file in read-only and thus does not prevent it from being overwritten. Therefore, once you opened your PDF file with Sumatra, changes out of RStudio (or any other R IDE) are immediately displayed in Sumatra.

A plugin is probably your best option. Look in the wordpress plugins directory or google to see if you can find one. I found the one below and that seemed to work perfect.

https://wordpress.org/plugins/woocommerce-products-filter/

This one seems to do exactly what you are after

I use several mysql connections (connecting to different sets of databases) in localhost.

This happened to me after I shut my computer down and mysql was not properly shutdown. After starting my machine I was able to successfully connect to multiple db connections except one (I used this a lot before my machine shutdown). As per the instructions in this posts I doubled connect_timeout but I was not able to connect to that one database connection.

I restarted my machine and i can successfully connect now. This will help you unblock yourself but it'd be great if it can be fixed without restarting the machine.

Another concern is: connection_timeout seemed to me delay related problem but I was getting the error immediately in localhost when there is no network in the equation.

Most of the time that I use AsyncTask my business logic is on a separated business class instead of being on the UI. In that case, I couldn't have a loop at doInBackground(). An example would be a synchronization process that consumes services and persist data one after another.

I end up handing on my task to the business object so it can handle cancelation. My setup is like this:

public abstract class MyActivity extends Activity {

    private Task mTask;
    private Business mBusiness;

    public void startTask() {
        if (mTask != null) {
            mTask.cancel(true);
        }
        mTask = new mTask();
        mTask.execute();
    }
}

protected class Task extends AsyncTask<Void, Void, Boolean> {
    @Override
    protected void onCancelled() {
        super.onCancelled();

        mTask.cancel(true);

        // ask if user wants to try again
    }

    @Override
    protected Boolean doInBackground(Void... params) {
        return mBusiness.synchronize(this);
    }

    @Override
    protected void onPostExecute(Boolean result) {
        super.onPostExecute(result);

        mTask = null;

        if (result) {
            // done!
        }
        else {
            // ask if user wants to try again
        }
    }
}

public class Business {
    public boolean synchronize(AsyncTask<?, ?, ?> task) {
        boolean response = false;
        response = loadStuff(task);

        if (response)
            response = loadMoreStuff(task);

        return response;
    }

    private boolean loadStuff(AsyncTask<?, ?, ?> task) {
        if (task != null && task.isCancelled()) return false;

        // load stuff

        return true;
    }
}

You can use below code sample also for achieving the same

ViewCompat.setElevation(sourceView, ViewCompat.getElevation(mCardView)+1);

This is backward compatible. Here mCardView is a view which should be below sourceView.