If you think a 64-bit DIV instruction is a good way to divide by two, then no wonder the compiler's asm output beat your hand-written code, even with -O0
(compile fast, no extra optimization, and store/reload to memory after/before every C statement so a debugger can modify variables).
See Agner Fog's Optimizing Assembly guide to learn how to write efficient asm. He also has instruction tables and a microarch guide for specific details for specific CPUs. See also the x86 tag wiki for more perf links.
See also this more general question about beating the compiler with hand-written asm: Is inline assembly language slower than native C++ code?. TL:DR: yes if you do it wrong (like this question).
Usually you're fine letting the compiler do its thing, especially if you try to write C++ that can compile efficiently. Also see is assembly faster than compiled languages?. One of the answers links to these neat slides showing how various C compilers optimize some really simple functions with cool tricks. Matt Godbolt's CppCon2017 talk “What Has My Compiler Done for Me Lately? Unbolting the Compiler's Lid” is in a similar vein.
even:
mov rbx, 2
xor rdx, rdx
div rbx
On Intel Haswell, div r64
is 36 uops, with a latency of 32-96 cycles, and a throughput of one per 21-74 cycles. (Plus the 2 uops to set up RBX and zero RDX, but out-of-order execution can run those early). High-uop-count instructions like DIV are microcoded, which can also cause front-end bottlenecks. In this case, latency is the most relevant factor because it's part of a loop-carried dependency chain.
shr rax, 1
does the same unsigned division: It's 1 uop, with 1c latency, and can run 2 per clock cycle.
For comparison, 32-bit division is faster, but still horrible vs. shifts. idiv r32
is 9 uops, 22-29c latency, and one per 8-11c throughput on Haswell.
As you can see from looking at gcc's -O0
asm output (Godbolt compiler explorer), it only uses shifts instructions. clang -O0
does compile naively like you thought, even using 64-bit IDIV twice. (When optimizing, compilers do use both outputs of IDIV when the source does a division and modulus with the same operands, if they use IDIV at all)
GCC doesn't have a totally-naive mode; it always transforms through GIMPLE, which means some "optimizations" can't be disabled. This includes recognizing division-by-constant and using shifts (power of 2) or a fixed-point multiplicative inverse (non power of 2) to avoid IDIV (see div_by_13
in the above godbolt link).
gcc -Os
(optimize for size) does use IDIV for non-power-of-2 division,
unfortunately even in cases where the multiplicative inverse code is only slightly larger but much faster.
(summary for this case: use uint64_t n
)
First of all, it's only interesting to look at optimized compiler output. (-O3
). -O0
speed is basically meaningless.
Look at your asm output (on Godbolt, or see How to remove "noise" from GCC/clang assembly output?). When the compiler doesn't make optimal code in the first place: Writing your C/C++ source in a way that guides the compiler into making better code is usually the best approach. You have to know asm, and know what's efficient, but you apply this knowledge indirectly. Compilers are also a good source of ideas: sometimes clang will do something cool, and you can hand-hold gcc into doing the same thing: see this answer and what I did with the non-unrolled loop in @Veedrac's code below.)
This approach is portable, and in 20 years some future compiler can compile it to whatever is efficient on future hardware (x86 or not), maybe using new ISA extension or auto-vectorizing. Hand-written x86-64 asm from 15 years ago would usually not be optimally tuned for Skylake. e.g. compare&branch macro-fusion didn't exist back then. What's optimal now for hand-crafted asm for one microarchitecture might not be optimal for other current and future CPUs. Comments on @johnfound's answer discuss major differences between AMD Bulldozer and Intel Haswell, which have a big effect on this code. But in theory, g++ -O3 -march=bdver3
and g++ -O3 -march=skylake
will do the right thing. (Or -march=native
.) Or -mtune=...
to just tune, without using instructions that other CPUs might not support.
My feeling is that guiding the compiler to asm that's good for a current CPU you care about shouldn't be a problem for future compilers. They're hopefully better than current compilers at finding ways to transform code, and can find a way that works for future CPUs. Regardless, future x86 probably won't be terrible at anything that's good on current x86, and the future compiler will avoid any asm-specific pitfalls while implementing something like the data movement from your C source, if it doesn't see something better.
Hand-written asm is a black-box for the optimizer, so constant-propagation doesn't work when inlining makes an input a compile-time constant. Other optimizations are also affected. Read https://gcc.gnu.org/wiki/DontUseInlineAsm before using asm. (And avoid MSVC-style inline asm: inputs/outputs have to go through memory which adds overhead.)
In this case: your n
has a signed type, and gcc uses the SAR/SHR/ADD sequence that gives the correct rounding. (IDIV and arithmetic-shift "round" differently for negative inputs, see the SAR insn set ref manual entry). (IDK if gcc tried and failed to prove that n
can't be negative, or what. Signed-overflow is undefined behaviour, so it should have been able to.)
You should have used uint64_t n
, so it can just SHR. And so it's portable to systems where long
is only 32-bit (e.g. x86-64 Windows).
BTW, gcc's optimized asm output looks pretty good (using unsigned long n
): the inner loop it inlines into main()
does this:
# from gcc5.4 -O3 plus my comments
# edx= count=1
# rax= uint64_t n
.L9: # do{
lea rcx, [rax+1+rax*2] # rcx = 3*n + 1
mov rdi, rax
shr rdi # rdi = n>>1;
test al, 1 # set flags based on n%2 (aka n&1)
mov rax, rcx
cmove rax, rdi # n= (n%2) ? 3*n+1 : n/2;
add edx, 1 # ++count;
cmp rax, 1
jne .L9 #}while(n!=1)
cmp/branch to update max and maxi, and then do the next n
The inner loop is branchless, and the critical path of the loop-carried dependency chain is:
Total: 5 cycle per iteration, latency bottleneck. Out-of-order execution takes care of everything else in parallel with this (in theory: I haven't tested with perf counters to see if it really runs at 5c/iter).
The FLAGS input of cmov
(produced by TEST) is faster to produce than the RAX input (from LEA->MOV), so it's not on the critical path.
Similarly, the MOV->SHR that produces CMOV's RDI input is off the critical path, because it's also faster than the LEA. MOV on IvyBridge and later has zero latency (handled at register-rename time). (It still takes a uop, and a slot in the pipeline, so it's not free, just zero latency). The extra MOV in the LEA dep chain is part of the bottleneck on other CPUs.
The cmp/jne is also not part of the critical path: it's not loop-carried, because control dependencies are handled with branch prediction + speculative execution, unlike data dependencies on the critical path.
GCC did a pretty good job here. It could save one code byte by using inc edx
instead of add edx, 1
, because nobody cares about P4 and its false-dependencies for partial-flag-modifying instructions.
It could also save all the MOV instructions, and the TEST: SHR sets CF= the bit shifted out, so we can use cmovc
instead of test
/ cmovz
.
### Hand-optimized version of what gcc does
.L9: #do{
lea rcx, [rax+1+rax*2] # rcx = 3*n + 1
shr rax, 1 # n>>=1; CF = n&1 = n%2
cmovc rax, rcx # n= (n&1) ? 3*n+1 : n/2;
inc edx # ++count;
cmp rax, 1
jne .L9 #}while(n!=1)
See @johnfound's answer for another clever trick: remove the CMP by branching on SHR's flag result as well as using it for CMOV: zero only if n was 1 (or 0) to start with. (Fun fact: SHR with count != 1 on Nehalem or earlier causes a stall if you read the flag results. That's how they made it single-uop. The shift-by-1 special encoding is fine, though.)
Avoiding MOV doesn't help with the latency at all on Haswell (Can x86's MOV really be "free"? Why can't I reproduce this at all?). It does help significantly on CPUs like Intel pre-IvB, and AMD Bulldozer-family, where MOV is not zero-latency. The compiler's wasted MOV instructions do affect the critical path. BD's complex-LEA and CMOV are both lower latency (2c and 1c respectively), so it's a bigger fraction of the latency. Also, throughput bottlenecks become an issue, because it only has two integer ALU pipes. See @johnfound's answer, where he has timing results from an AMD CPU.
Even on Haswell, this version may help a bit by avoiding some occasional delays where a non-critical uop steals an execution port from one on the critical path, delaying execution by 1 cycle. (This is called a resource conflict). It also saves a register, which may help when doing multiple n
values in parallel in an interleaved loop (see below).
LEA's latency depends on the addressing mode, on Intel SnB-family CPUs. 3c for 3 components ([base+idx+const]
, which takes two separate adds), but only 1c with 2 or fewer components (one add). Some CPUs (like Core2) do even a 3-component LEA in a single cycle, but SnB-family doesn't. Worse, Intel SnB-family standardizes latencies so there are no 2c uops, otherwise 3-component LEA would be only 2c like Bulldozer. (3-component LEA is slower on AMD as well, just not by as much).
So lea rcx, [rax + rax*2]
/ inc rcx
is only 2c latency, faster than lea rcx, [rax + rax*2 + 1]
, on Intel SnB-family CPUs like Haswell. Break-even on BD, and worse on Core2. It does cost an extra uop, which normally isn't worth it to save 1c latency, but latency is the major bottleneck here and Haswell has a wide enough pipeline to handle the extra uop throughput.
Neither gcc, icc, nor clang (on godbolt) used SHR's CF output, always using an AND or TEST. Silly compilers. :P They're great pieces of complex machinery, but a clever human can often beat them on small-scale problems. (Given thousands to millions of times longer to think about it, of course! Compilers don't use exhaustive algorithms to search for every possible way to do things, because that would take too long when optimizing a lot of inlined code, which is what they do best. They also don't model the pipeline in the target microarchitecture, at least not in the same detail as IACA or other static-analysis tools; they just use some heuristics.)
Simple loop unrolling won't help; this loop bottlenecks on the latency of a loop-carried dependency chain, not on loop overhead / throughput. This means it would do well with hyperthreading (or any other kind of SMT), since the CPU has lots of time to interleave instructions from two threads. This would mean parallelizing the loop in main
, but that's fine because each thread can just check a range of n
values and produce a pair of integers as a result.
Interleaving by hand within a single thread might be viable, too. Maybe compute the sequence for a pair of numbers in parallel, since each one only takes a couple registers, and they can all update the same max
/ maxi
. This creates more instruction-level parallelism.
The trick is deciding whether to wait until all the n
values have reached 1
before getting another pair of starting n
values, or whether to break out and get a new start point for just one that reached the end condition, without touching the registers for the other sequence. Probably it's best to keep each chain working on useful data, otherwise you'd have to conditionally increment its counter.
You could maybe even do this with SSE packed-compare stuff to conditionally increment the counter for vector elements where n
hadn't reached 1
yet. And then to hide the even longer latency of a SIMD conditional-increment implementation, you'd need to keep more vectors of n
values up in the air. Maybe only worth with 256b vector (4x uint64_t
).
I think the best strategy to make detection of a 1
"sticky" is to mask the vector of all-ones that you add to increment the counter. So after you've seen a 1
in an element, the increment-vector will have a zero, and +=0 is a no-op.
# starting with YMM0 = [ n_d, n_c, n_b, n_a ] (64-bit elements)
# ymm4 = _mm256_set1_epi64x(1): increment vector
# ymm5 = all-zeros: count vector
.inner_loop:
vpaddq ymm1, ymm0, xmm0
vpaddq ymm1, ymm1, xmm0
vpaddq ymm1, ymm1, set1_epi64(1) # ymm1= 3*n + 1. Maybe could do this more efficiently?
vprllq ymm3, ymm0, 63 # shift bit 1 to the sign bit
vpsrlq ymm0, ymm0, 1 # n /= 2
# FP blend between integer insns may cost extra bypass latency, but integer blends don't have 1 bit controlling a whole qword.
vpblendvpd ymm0, ymm0, ymm1, ymm3 # variable blend controlled by the sign bit of each 64-bit element. I might have the source operands backwards, I always have to look this up.
# ymm0 = updated n in each element.
vpcmpeqq ymm1, ymm0, set1_epi64(1)
vpandn ymm4, ymm1, ymm4 # zero out elements of ymm4 where the compare was true
vpaddq ymm5, ymm5, ymm4 # count++ in elements where n has never been == 1
vptest ymm4, ymm4
jnz .inner_loop
# Fall through when all the n values have reached 1 at some point, and our increment vector is all-zero
vextracti128 ymm0, ymm5, 1
vpmaxq .... crap this doesn't exist
# Actually just delay doing a horizontal max until the very very end. But you need some way to record max and maxi.
You can and should implement this with intrinsics instead of hand-written asm.
Besides just implementing the same logic with more efficient asm, look for ways to simplify the logic, or avoid redundant work. e.g. memoize to detect common endings to sequences. Or even better, look at 8 trailing bits at once (gnasher's answer)
@EOF points out that tzcnt
(or bsf
) could be used to do multiple n/=2
iterations in one step. That's probably better than SIMD vectorizing; no SSE or AVX instruction can do that. It's still compatible with doing multiple scalar n
s in parallel in different integer registers, though.
So the loop might look like this:
goto loop_entry; // C++ structured like the asm, for illustration only
do {
n = n*3 + 1;
loop_entry:
shift = _tzcnt_u64(n);
n >>= shift;
count += shift;
} while(n != 1);
This may do significantly fewer iterations, but variable-count shifts are slow on Intel SnB-family CPUs without BMI2. 3 uops, 2c latency. (They have an input dependency on the FLAGS because count=0 means the flags are unmodified. They handle this as a data dependency, and take multiple uops because a uop can only have 2 inputs (pre-HSW/BDW anyway)). This is the kind that people complaining about x86's crazy-CISC design are referring to. It makes x86 CPUs slower than they would be if the ISA was designed from scratch today, even in a mostly-similar way. (i.e. this is part of the "x86 tax" that costs speed / power.) SHRX/SHLX/SARX (BMI2) are a big win (1 uop / 1c latency).
It also puts tzcnt (3c on Haswell and later) on the critical path, so it significantly lengthens the total latency of the loop-carried dependency chain. It does remove any need for a CMOV, or for preparing a register holding n>>1
, though. @Veedrac's answer overcomes all this by deferring the tzcnt/shift for multiple iterations, which is highly effective (see below).
We can safely use BSF or TZCNT interchangeably, because n
can never be zero at that point. TZCNT's machine-code decodes as BSF on CPUs that don't support BMI1. (Meaningless prefixes are ignored, so REP BSF runs as BSF).
TZCNT performs much better than BSF on AMD CPUs that support it, so it can be a good idea to use REP BSF
, even if you don't care about setting ZF if the input is zero rather than the output. Some compilers do this when you use __builtin_ctzll
even with -mno-bmi
.
They perform the same on Intel CPUs, so just save the byte if that's all that matters. TZCNT on Intel (pre-Skylake) still has a false-dependency on the supposedly write-only output operand, just like BSF, to support the undocumented behaviour that BSF with input = 0 leaves its destination unmodified. So you need to work around that unless optimizing only for Skylake, so there's nothing to gain from the extra REP byte. (Intel often goes above and beyond what the x86 ISA manual requires, to avoid breaking widely-used code that depends on something it shouldn't, or that is retroactively disallowed. e.g. Windows 9x's assumes no speculative prefetching of TLB entries, which was safe when the code was written, before Intel updated the TLB management rules.)
Anyway, LZCNT/TZCNT on Haswell have the same false dep as POPCNT: see this Q&A. This is why in gcc's asm output for @Veedrac's code, you see it breaking the dep chain with xor-zeroing on the register it's about to use as TZCNT's destination when it doesn't use dst=src. Since TZCNT/LZCNT/POPCNT never leave their destination undefined or unmodified, this false dependency on the output on Intel CPUs is a performance bug / limitation. Presumably it's worth some transistors / power to have them behave like other uops that go to the same execution unit. The only perf upside is interaction with another uarch limitation: they can micro-fuse a memory operand with an indexed addressing mode on Haswell, but on Skylake where Intel removed the false dep for LZCNT/TZCNT they "un-laminate" indexed addressing modes while POPCNT can still micro-fuse any addr mode.
@hidefromkgb's answer has a nice observation that you're guaranteed to be able to do one right shift after a 3n+1. You can compute this more even more efficiently than just leaving out the checks between steps. The asm implementation in that answer is broken, though (it depends on OF, which is undefined after SHRD with a count > 1), and slow: ROR rdi,2
is faster than SHRD rdi,rdi,2
, and using two CMOV instructions on the critical path is slower than an extra TEST that can run in parallel.
I put tidied / improved C (which guides the compiler to produce better asm), and tested+working faster asm (in comments below the C) up on Godbolt: see the link in @hidefromkgb's answer. (This answer hit the 30k char limit from the large Godbolt URLs, but shortlinks can rot and were too long for goo.gl anyway.)
Also improved the output-printing to convert to a string and make one write()
instead of writing one char at a time. This minimizes impact on timing the whole program with perf stat ./collatz
(to record performance counters), and I de-obfuscated some of the non-critical asm.
@Veedrac's code
I got a minor speedup from right-shifting as much as we know needs doing, and checking to continue the loop. From 7.5s for limit=1e8 down to 7.275s, on Core2Duo (Merom), with an unroll factor of 16.
code + comments on Godbolt. Don't use this version with clang; it does something silly with the defer-loop. Using a tmp counter k
and then adding it to count
later changes what clang does, but that slightly hurts gcc.
See discussion in comments: Veedrac's code is excellent on CPUs with BMI1 (i.e. not Celeron/Pentium)
When I change my django version to 1.9, it don't arise the error.
pip uninstall django
pip install django==1.9
mysqli_select_db()
should have 2 parameters, the connection link and the database name -
mysqli_select_db($con, 'phpcadet') or die(mysqli_error($con));
Using mysqli_error
in the die statement will tell you exactly what is wrong as opposed to a generic error message.
Use FileSaver.js
. It supports Chrome, Edge, Firefox, and IE 10+ (and probably IE < 10 with a few "polyfills" - see Note 4). FileSaver.js
implements the saveAs() FileSaver interface in browsers that do not natively support it:
https://github.com/eligrey/FileSaver.js
Minified version is really small at < 2.5KB, gzipped < 1.2KB.
Usage:
/* TODO: replace the blob content with your byte[] */
var blob = new Blob([yourBinaryDataAsAnArrayOrAsAString], {type: "application/octet-stream"});
var fileName = "myFileName.myExtension";
saveAs(blob, fileName);
You might need Blob.js in some browsers (see Note 3). Blob.js implements the W3C Blob interface in browsers that do not natively support it. It is a cross-browser implementation:
https://github.com/eligrey/Blob.js
Consider StreamSaver.js if you have files larger than blob's size limitations.
Complete example:
/* Two options_x000D_
* 1. Get FileSaver.js from here_x000D_
* https://github.com/eligrey/FileSaver.js/blob/master/FileSaver.min.js -->_x000D_
* <script src="FileSaver.min.js" />_x000D_
*_x000D_
* Or_x000D_
*_x000D_
* 2. If you want to support only modern browsers like Chrome, Edge, Firefox, etc., _x000D_
* then a simple implementation of saveAs function can be:_x000D_
*/_x000D_
function saveAs(blob, fileName) {_x000D_
var url = window.URL.createObjectURL(blob);_x000D_
_x000D_
var anchorElem = document.createElement("a");_x000D_
anchorElem.style = "display: none";_x000D_
anchorElem.href = url;_x000D_
anchorElem.download = fileName;_x000D_
_x000D_
document.body.appendChild(anchorElem);_x000D_
anchorElem.click();_x000D_
_x000D_
document.body.removeChild(anchorElem);_x000D_
_x000D_
// On Edge, revokeObjectURL should be called only after_x000D_
// a.click() has completed, atleast on EdgeHTML 15.15048_x000D_
setTimeout(function() {_x000D_
window.URL.revokeObjectURL(url);_x000D_
}, 1000);_x000D_
}_x000D_
_x000D_
(function() {_x000D_
// convert base64 string to byte array_x000D_
var byteCharacters = atob("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");_x000D_
var byteNumbers = new Array(byteCharacters.length);_x000D_
for (var i = 0; i < byteCharacters.length; i++) {_x000D_
byteNumbers[i] = byteCharacters.charCodeAt(i);_x000D_
}_x000D_
var byteArray = new Uint8Array(byteNumbers);_x000D_
_x000D_
// now that we have the byte array, construct the blob from it_x000D_
var blob1 = new Blob([byteArray], {type: "application/octet-stream"});_x000D_
_x000D_
var fileName1 = "cool.gif";_x000D_
saveAs(blob1, fileName1);_x000D_
_x000D_
// saving text file_x000D_
var blob2 = new Blob(["cool"], {type: "text/plain"});_x000D_
var fileName2 = "cool.txt";_x000D_
saveAs(blob2, fileName2);_x000D_
})();
_x000D_
Tested on Chrome, Edge, Firefox, and IE 11 (use FileSaver.js
for supporting IE 11).
You can also save from a canvas
element. See https://github.com/eligrey/FileSaver.js#saving-a-canvas.
Demos: https://eligrey.com/demos/FileSaver.js/
Blog post by author of FileSaver.js
: http://eligrey.com/blog/post/saving-generated-files-on-the-client-side
Note 1: Browser support: https://github.com/eligrey/FileSaver.js#supported-browsers
Note 2: Failed to execute 'atob' on 'Window'
Note 3: Polyfill for browsers not supporting Blob: https://github.com/eligrey/Blob.js
See http://caniuse.com/#search=blob
Note 4: IE < 10 support (I've not tested this part):
https://github.com/eligrey/FileSaver.js#ie--10
https://github.com/eligrey/FileSaver.js/issues/56#issuecomment-30917476
Downloadify is a Flash-based polyfill for supporting IE6-9: https://github.com/dcneiner/downloadify (I don't recommend Flash-based solutions in general, though.)
Demo using Downloadify and FileSaver.js for supporting IE6-9 also: http://sheetjs.com/demos/table.html
Note 5: Creating a BLOB from a Base64 string in JavaScript
Note 6: FileSaver.js
examples: https://github.com/eligrey/FileSaver.js#examples
This answer seems to be the catch-all for CSV encoding issues. If you are getting a strange encoding problem with your header like this:
>>> f = open(filename,"r")
>>> reader = DictReader(f)
>>> next(reader)
OrderedDict([('\ufeffid', '1'), ... ])
Then you have a byte order mark (BOM) character at the beginning of your CSV file. This answer addresses the issue:
Python read csv - BOM embedded into the first key
The solution is to load the CSV with encoding="utf-8-sig"
:
>>> f = open(filename,"r", encoding="utf-8-sig")
>>> reader = DictReader(f)
>>> next(reader)
OrderedDict([('id', '1'), ... ])
Hopefully this helps someone.
Very nice solution by praneybehl, but if someone wants to save the data as a csv
file and using a blob
method then they can refer this:
function JSONToCSVConvertor(JSONData, ReportTitle, ShowLabel) {
//If JSONData is not an object then JSON.parse will parse the JSON string in an Object
var arrData = typeof JSONData != 'object' ? JSON.parse(JSONData) : JSONData;
var CSV = '';
//This condition will generate the Label/Header
if (ShowLabel) {
var row = "";
//This loop will extract the label from 1st index of on array
for (var index in arrData[0]) {
//Now convert each value to string and comma-seprated
row += index + ',';
}
row = row.slice(0, -1);
//append Label row with line break
CSV += row + '\r\n';
}
//1st loop is to extract each row
for (var i = 0; i < arrData.length; i++) {
var row = "";
//2nd loop will extract each column and convert it in string comma-seprated
for (var index in arrData[i]) {
row += '"' + arrData[i][index] + '",';
}
row.slice(0, row.length - 1);
//add a line break after each row
CSV += row + '\r\n';
}
if (CSV == '') {
alert("Invalid data");
return;
}
//this trick will generate a temp "a" tag
var link = document.createElement("a");
link.id = "lnkDwnldLnk";
//this part will append the anchor tag and remove it after automatic click
document.body.appendChild(link);
var csv = CSV;
blob = new Blob([csv], { type: 'text/csv' });
var csvUrl = window.webkitURL.createObjectURL(blob);
var filename = (ReportTitle || 'UserExport') + '.csv';
$("#lnkDwnldLnk")
.attr({
'download': filename,
'href': csvUrl
});
$('#lnkDwnldLnk')[0].click();
document.body.removeChild(link);
}
Try this to remove the first and last bracket of string ex.[1,2,3]
String s =str.replaceAll("[", "").replaceAll("]", "");
Exptected result = 1,2,3
As it turns out, this has to do with Microsoft's "intelligent" choice to make all intranet sites force to compatibility mode, even if X-UA-Compatible
is set to IE=edge
.
The solution I use is.
Using firefox
1. using web developer --> Web Console
2. open the java-script file in new tab.
3. Refresh the new tab you should see your new code.
4. Refresh the original page
5. You should see your changes.
Dont know if this is going to be faster or not, but it seems easier to do it this way, and you avoid the error by not passing in a function to end()...
it just needed a variable... not a big deal to write one more line of code, then unset it if you needed to.
$array = array(
'first' => 123,
'second' => 456,
'last' => 789,
);
$keys = array_keys($array);
$last = end($keys);
The below changes fixed my problem.
I struggled with the same error for a week. I would like to share with you all that the solution is simply host = ''
in the server and the client host = ip
of the server.
If you want to pass the variable to your proxy backend, you have to set it with the proxy module.
location / {
proxy_pass http://example.com;
proxy_set_header Host example.com;
proxy_set_header HTTP_Country-Code $geoip_country_code;
proxy_pass_request_headers on;
}
And now it's passed to the proxy backend.
You can achieve it using this single line code :
String numbers = text.substring(text.length() - 7, text.length());
But be sure to catch Exception if the input string length is less than 7.
You can replace 7 with any number say N, if you want to get last 'N' characters.
Hibernate creators discourage doing so in a production environment in their book "Java Persistence with Hibernate":
WARNING: We've seen Hibernate users trying to use SchemaUpdate to update the schema of a production database automatically. This can quickly end in disaster and won't be allowed by your DBA.
Following from Ryan's answer, I think that the interface you are looking for is defined as follows:
interface Param {
title: string;
callback: () => void;
}
Solution with o(n) time complexity and o(1) space complexity.
void reverse(int[] array) {
int start = 0;
int end = array.length - 1;
while (start < end) {
int temp = array[start];
array[start] = array[end];
array[end] = temp;
start++;
end--;
}
}
node --max_old_space_size=4096 ./node_modules/@angular/cli/bin/ng build --prod --build-optimizer
adding parameter --build-optimizer
resolved the issue in my case.
Update:
I am not sure why adding only --build-optimizer solves the issue but as per angular docs it should be used with aot enabled, so updated command should be like below
--build-optimizer=true --aot=true
Specify a 'display-image' and 'full-size-image' as described here: http://www.informit.com/articles/article.aspx?p=1829415&seqNum=16
iOS8 requires these images
Run Below Commands in Line:-
You could achieve that simply by wrapping the image by a <div>
and adding overflow: hidden
to that element:
<div class="img-wrapper">
<img src="..." />
</div>
.img-wrapper {
display: inline-block; /* change the default display type to inline-block */
overflow: hidden; /* hide the overflow */
}
Also it's worth noting that <img>
element (like the other inline elements) sits on its baseline by default. And there would be a 4~5px
gap at the bottom of the image.
That vertical gap belongs to the reserved space of descenders like: g j p q y. You could fix the alignment issue by adding vertical-align
property to the image with a value other than baseline
.
Additionally for a better user experience, you could add transition
to the images.
Thus we'll end up with the following:
.img-wrapper img {
transition: all .2s ease;
vertical-align: middle;
}
Although I have attended the above, I have come to this point after many attempts. 1- If you want access to the certificate from the store, you can do this as an example 2- It is much easier and cleaner to produce the certificate and use it via a path
Asp.net Core 2.2 OR1:
using Org.BouncyCastle.Asn1;
using Org.BouncyCastle.Asn1.Pkcs;
using Org.BouncyCastle.Asn1.X509;
using Org.BouncyCastle.Crypto;
using Org.BouncyCastle.Crypto.Generators;
using Org.BouncyCastle.Crypto.Operators;
using Org.BouncyCastle.Crypto.Parameters;
using Org.BouncyCastle.Crypto.Prng;
using Org.BouncyCastle.Math;
using Org.BouncyCastle.Pkcs;
using Org.BouncyCastle.Security;
using Org.BouncyCastle.Utilities;
using Org.BouncyCastle.X509;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Security.Cryptography;
using System.Security.Cryptography.X509Certificates;
using System.Text;
using System.Threading.Tasks;
namespace Tursys.Pool.Storage.Api.Utility
{
class CertificateManager
{
public static X509Certificate2 GetCertificate(string caller)
{
AsymmetricKeyParameter caPrivateKey = null;
X509Certificate2 clientCert;
X509Certificate2 serverCert;
clientCert = GetCertificateIfExist("CN=127.0.0.1", StoreName.My, StoreLocation.LocalMachine);
serverCert = GetCertificateIfExist("CN=MyROOTCA", StoreName.Root, StoreLocation.LocalMachine);
if (clientCert == null || serverCert == null)
{
var caCert = GenerateCACertificate("CN=MyROOTCA", ref caPrivateKey);
addCertToStore(caCert, StoreName.Root, StoreLocation.LocalMachine);
clientCert = GenerateSelfSignedCertificate("CN=127.0.0.1", "CN=MyROOTCA", caPrivateKey);
var p12 = clientCert.Export(X509ContentType.Pfx);
addCertToStore(new X509Certificate2(p12, (string)null, X509KeyStorageFlags.Exportable | X509KeyStorageFlags.PersistKeySet), StoreName.My, StoreLocation.LocalMachine);
}
if (caller == "client")
return clientCert;
return serverCert;
}
public static X509Certificate2 GenerateSelfSignedCertificate(string subjectName, string issuerName, AsymmetricKeyParameter issuerPrivKey)
{
const int keyStrength = 2048;
// Generating Random Numbers
CryptoApiRandomGenerator randomGenerator = new CryptoApiRandomGenerator();
SecureRandom random = new SecureRandom(randomGenerator);
// The Certificate Generator
X509V3CertificateGenerator certificateGenerator = new X509V3CertificateGenerator();
// Serial Number
BigInteger serialNumber = BigIntegers.CreateRandomInRange(BigInteger.One, BigInteger.ValueOf(Int64.MaxValue), random);
certificateGenerator.SetSerialNumber(serialNumber);
// Signature Algorithm
//const string signatureAlgorithm = "SHA256WithRSA";
//certificateGenerator.SetSignatureAlgorithm(signatureAlgorithm);
// Issuer and Subject Name
X509Name subjectDN = new X509Name(subjectName);
X509Name issuerDN = new X509Name(issuerName);
certificateGenerator.SetIssuerDN(issuerDN);
certificateGenerator.SetSubjectDN(subjectDN);
// Valid For
DateTime notBefore = DateTime.UtcNow.Date;
DateTime notAfter = notBefore.AddYears(2);
certificateGenerator.SetNotBefore(notBefore);
certificateGenerator.SetNotAfter(notAfter);
// Subject Public Key
AsymmetricCipherKeyPair subjectKeyPair;
var keyGenerationParameters = new KeyGenerationParameters(random, keyStrength);
var keyPairGenerator = new RsaKeyPairGenerator();
keyPairGenerator.Init(keyGenerationParameters);
subjectKeyPair = keyPairGenerator.GenerateKeyPair();
certificateGenerator.SetPublicKey(subjectKeyPair.Public);
// Generating the Certificate
AsymmetricCipherKeyPair issuerKeyPair = subjectKeyPair;
ISignatureFactory signatureFactory = new Asn1SignatureFactory("SHA512WITHRSA", issuerKeyPair.Private, random);
// selfsign certificate
Org.BouncyCastle.X509.X509Certificate certificate = certificateGenerator.Generate(signatureFactory);
// correcponding private key
PrivateKeyInfo info = PrivateKeyInfoFactory.CreatePrivateKeyInfo(subjectKeyPair.Private);
// merge into X509Certificate2
X509Certificate2 x509 = new System.Security.Cryptography.X509Certificates.X509Certificate2(certificate.GetEncoded());
Asn1Sequence seq = (Asn1Sequence)Asn1Object.FromByteArray(info.PrivateKeyAlgorithm.GetDerEncoded());
if (seq.Count != 9)
{
//throw new PemException("malformed sequence in RSA private key");
}
RsaPrivateKeyStructure rsa = RsaPrivateKeyStructure.GetInstance(info.ParsePrivateKey());
RsaPrivateCrtKeyParameters rsaparams = new RsaPrivateCrtKeyParameters(
rsa.Modulus, rsa.PublicExponent, rsa.PrivateExponent, rsa.Prime1, rsa.Prime2, rsa.Exponent1, rsa.Exponent2, rsa.Coefficient);
try
{
var rsap = DotNetUtilities.ToRSA(rsaparams);
x509 = x509.CopyWithPrivateKey(rsap);
//x509.PrivateKey = ToDotNetKey(rsaparams);
}
catch(Exception ex)
{
;
}
//x509.PrivateKey = DotNetUtilities.ToRSA(rsaparams);
return x509;
}
public static AsymmetricAlgorithm ToDotNetKey(RsaPrivateCrtKeyParameters privateKey)
{
var cspParams = new CspParameters
{
KeyContainerName = Guid.NewGuid().ToString(),
KeyNumber = (int)KeyNumber.Exchange,
Flags = CspProviderFlags.UseMachineKeyStore
};
var rsaProvider = new RSACryptoServiceProvider(cspParams);
var parameters = new RSAParameters
{
Modulus = privateKey.Modulus.ToByteArrayUnsigned(),
P = privateKey.P.ToByteArrayUnsigned(),
Q = privateKey.Q.ToByteArrayUnsigned(),
DP = privateKey.DP.ToByteArrayUnsigned(),
DQ = privateKey.DQ.ToByteArrayUnsigned(),
InverseQ = privateKey.QInv.ToByteArrayUnsigned(),
D = privateKey.Exponent.ToByteArrayUnsigned(),
Exponent = privateKey.PublicExponent.ToByteArrayUnsigned()
};
rsaProvider.ImportParameters(parameters);
return rsaProvider;
}
public static X509Certificate2 GenerateCACertificate(string subjectName, ref AsymmetricKeyParameter CaPrivateKey)
{
const int keyStrength = 2048;
// Generating Random Numbers
CryptoApiRandomGenerator randomGenerator = new CryptoApiRandomGenerator();
SecureRandom random = new SecureRandom(randomGenerator);
// The Certificate Generator
X509V3CertificateGenerator certificateGenerator = new X509V3CertificateGenerator();
// Serial Number
BigInteger serialNumber = BigIntegers.CreateRandomInRange(BigInteger.One, BigInteger.ValueOf(Int64.MaxValue), random);
certificateGenerator.SetSerialNumber(serialNumber);
// Signature Algorithm
//const string signatureAlgorithm = "SHA256WithRSA";
//certificateGenerator.SetSignatureAlgorithm(signatureAlgorithm);
// Issuer and Subject Name
X509Name subjectDN = new X509Name(subjectName);
X509Name issuerDN = subjectDN;
certificateGenerator.SetIssuerDN(issuerDN);
certificateGenerator.SetSubjectDN(subjectDN);
// Valid For
DateTime notBefore = DateTime.UtcNow.Date;
DateTime notAfter = notBefore.AddYears(2);
certificateGenerator.SetNotBefore(notBefore);
certificateGenerator.SetNotAfter(notAfter);
// Subject Public Key
AsymmetricCipherKeyPair subjectKeyPair;
KeyGenerationParameters keyGenerationParameters = new KeyGenerationParameters(random, keyStrength);
RsaKeyPairGenerator keyPairGenerator = new RsaKeyPairGenerator();
keyPairGenerator.Init(keyGenerationParameters);
subjectKeyPair = keyPairGenerator.GenerateKeyPair();
certificateGenerator.SetPublicKey(subjectKeyPair.Public);
// Generating the Certificate
AsymmetricCipherKeyPair issuerKeyPair = subjectKeyPair;
// selfsign certificate
//Org.BouncyCastle.X509.X509Certificate certificate = certificateGenerator.Generate(issuerKeyPair.Private, random);
ISignatureFactory signatureFactory = new Asn1SignatureFactory("SHA512WITHRSA", issuerKeyPair.Private, random);
// selfsign certificate
Org.BouncyCastle.X509.X509Certificate certificate = certificateGenerator.Generate(signatureFactory);
X509Certificate2 x509 = new System.Security.Cryptography.X509Certificates.X509Certificate2(certificate.GetEncoded());
CaPrivateKey = issuerKeyPair.Private;
return x509;
//return issuerKeyPair.Private;
}
public static bool addCertToStore(System.Security.Cryptography.X509Certificates.X509Certificate2 cert, System.Security.Cryptography.X509Certificates.StoreName st, System.Security.Cryptography.X509Certificates.StoreLocation sl)
{
bool bRet = false;
try
{
X509Store store = new X509Store(st, sl);
store.Open(OpenFlags.ReadWrite);
store.Add(cert);
store.Close();
}
catch
{
}
return bRet;
}
protected internal static X509Certificate2 GetCertificateIfExist(string subjectName, StoreName store, StoreLocation location)
{
using (var certStore = new X509Store(store, location))
{
certStore.Open(OpenFlags.ReadOnly);
var certCollection = certStore.Certificates.Find(
X509FindType.FindBySubjectDistinguishedName, subjectName, false);
X509Certificate2 certificate = null;
if (certCollection.Count > 0)
{
certificate = certCollection[0];
}
return certificate;
}
}
}
}
OR 2:
services.AddDataProtection()
//.PersistKeysToFileSystem(new DirectoryInfo(@"c:\temp-keys"))
.ProtectKeysWithCertificate(
new X509Certificate2(Path.Combine(Directory.GetCurrentDirectory(), "clientCert.pfx"), "Password")
)
.UnprotectKeysWithAnyCertificate(
new X509Certificate2(Path.Combine(Directory.GetCurrentDirectory(), "clientCert.pfx"), "Password")
);
The ||
and &&
operators are short circuit, so if the left side of ||
evaluates to true
or the left side of &&
evaluates to false, the right side will not be evaluated. That's equivalent to a break.
If you're looking for an alternative that doesn't involve a third-party library (e.g. Commons I/O), you can use the Scanner class:
private String readFile(String pathname) throws IOException {
File file = new File(pathname);
StringBuilder fileContents = new StringBuilder((int)file.length());
try (Scanner scanner = new Scanner(file)) {
while(scanner.hasNextLine()) {
fileContents.append(scanner.nextLine() + System.lineSeparator());
}
return fileContents.toString();
}
}
select max(id) from customers
You can use the following code to both work with the command line and a web browser. Put this code above your PHP code. It creates a $_GET variable for each command line parameter.
In your code you only need to check for $_GET
variables then, not worrying about if the script is called from the web browser or command line.
if(isset($argv))
foreach ($argv as $arg) {
$e=explode("=",$arg);
if(count($e)==2)
$_GET[$e[0]]=$e[1];
else
$_GET[$e[0]]=0;
}
$("tr.item").each(function() {
$this = $(this);
var value = $this.find("span.value").html();
var quantity = $this.find("input.quantity").val();
});
You can also try this to get the text.
foo.encode('ascii', 'ignore')
I was having the same issue. My problem was that the computer that generated the initial certificate request had crashed before the extended ssl validation process was completed. I needed to generate a new private key and then import the updated certificate from the certificate provider. If the private key doesn't exist on your computer then you can't export the certificate as pfx. They option is greyed out.
The second answer provided by nickf is very clever. However, it only works for a character length of the target sub-string of 1 and ignores spaces. Specifically, there were two leading spaces in my data, which SQL helpfully removes (I didn't know this) when all the characters on the right-hand-side are removed. Which meant that
" John Smith"
generated 12 using Nickf's method, whereas:
" Joe Bloggs, John Smith"
generated 10, and
" Joe Bloggs, John Smith, John Smith"
Generated 20.
I've therefore modified the solution slightly to the following, which works for me:
Select (len(replace(Sales_Reps,' ',''))- len(replace((replace(Sales_Reps, ' ','')),'JohnSmith','')))/9 as Count_JS
I'm sure someone can think of a better way of doing it!
There don't seem to be a variable which holds exactly what you want.
However, quoting the docs:
Also available,
inventory_dir
is the pathname of the directory holding Ansible’s inventory host file,inventory_file
is the pathname and the filename pointing to the Ansible’s inventory host file.playbook_dir contains the playbook base directory.
And finally,
role_path
will return the current role’s pathname (since 1.8). This will only work inside a role.
Dependent on your setup, those or the $ pwd
-based solution might be enough.
For Meteor, this can be solved by changing twbs:[email protected] to twbs:[email protected] in .versions
You have to give a valid username. For example, to run query with user root
you have to type the following command and then enter password when prompted:
mysql -u root -p
Once you are connected, prompt will be something like:
mysql>
Here you can write your query, after database selection, for example:
mysql> USE your_database;
mysql> SELECT * FROM your_table;
Although it is quite an old question, another approach is to change AppendDataBoundItems property. So the code will be:
<asp:DropDownList ID="DropDownList1" runat="server" AutoPostBack="True"
OnSelectedIndexChanged="DropDownList1_SelectedIndexChanged"
AppendDataBoundItems="True">
<asp:ListItem Selected="True" Value="0" Text="Select"></asp:ListItem>
</asp:DropDownList>
Try to use another config file (not the one from your project) and RESTART Visual Studio:
C:\Program Files (x86)\Microsoft Visual Studio 11.0\Common7\IDE\CommonExtensions\Microsoft\TestWindow\vstest.executionengine.x86.exe.config
(32-bit)
or
C:\Program Files (x86)\Microsoft Visual Studio 11.0\Common7\IDE\CommonExtensions\Microsoft\TestWindow\vstest.executionengine.exe.config
(64-bit)
This isn't necessarily an answer to the original question, but a sharing of some results from my own testing. This:
<<test > print.sh
#!/bin/bash
echo \$PWD
echo $PWD
test
will produce the same file as:
cat <<test > print.sh
#!/bin/bash
echo \$PWD
echo $PWD
test
So, I don't see the point of using the cat command.
I think the solution is to download install Microsoft windows sdk for server 2008 with .net framework 3.5
or just install Visual studio 2008.
The issue is for windows builds node-gyp executes vcbuid.exe file, and for some reason it can't find it.
Thanks
You can install openssl
using one single line if you have chocolatey installed
choco install openssl
I know I'm kinda late to the party but I was looking for a solution for this..and I bumped into this post. Here is my take on this, maybe it will help some of you.
The html part:
<button type="button" class="btn btn-lg btn-danger" data-content="test" data-placement="right" data-toggle="popover" title="Popover title" >Hover to toggle popover</button><br>
// with custom html stored in a separate element, using "data-target"
<button type="button" class="btn btn-lg btn-danger" data-target="#custom-html" data-placement="right" data-toggle="popover" >Hover to toggle popover</button>
<div id="custom-html" style="display: none;">
<strong>Helloooo!!</strong>
</div>
The js part:
$(function () {
let popover = '[data-toggle="popover"]';
let popoverId = function(element) {
return $(element).popover().data('bs.popover').tip.id;
}
$(popover).popover({
trigger: 'manual',
html: true,
animation: false
})
.on('show.bs.popover', function() {
// hide all other popovers
$(popover).popover("hide");
})
.on("mouseenter", function() {
// add custom html from element
let target = $(this).data('target');
$(this).popover().data('bs.popover').config.content = $(target).html();
// show the popover
$(this).popover("show");
$('#' + popoverId(this)).on("mouseleave", () => {
$(this).popover("hide");
});
}).on("mouseleave", function() {
setTimeout(() => {
if (!$("#" + popoverId(this) + ":hover").length) {
$(this).popover("hide");
}
}, 100);
});
})
I think todays, it is better to use, but only with C++17.
#include <type_traits>
template <typename T>
void foo() {
if constexpr (std::is_same_v<T, animal>) {
// use type specific operations...
}
}
If you use some type specific operations in if expression body without constexpr
, this code will not compile.
Login into the machine as oracle login user id( where oracle is installed)..
Add ORACLE_HOME = <Oracle installation Directory>
in Environment variable
Open a command prompt
Change the directory to %ORACLE_HOME%\bin
type the command sqlplus /nolog
SQL> connect /as sysdba
SQL> alter user SYS identified by "newpassword";
One more check, while oracle installation and database confiuration assistant setup, if you configure any database then you might have given password and checked the same password for all other accounts.. If so, then you try with the password which you have given in your database configuration assistant setup.
Hope this will work for you..
Player.cpp
require the definition of Ball
class. So simply add #include "Ball.h"
Player.cpp:
#include "Player.h"
#include "Ball.h"
void Player::doSomething(Ball& ball) {
ball.ballPosX += 10; // incomplete type error occurs here.
}
Had the same problem and solved it by:
Project/Module/build/source/r/debug/package/R.java
Probably it was even there before the project was build, but I didn't test that.
I hope this was helpful, even though the answer comes a bit late and by now the bug with the
Settings->Compiler->[ ] Use external build
should be fixed afaik ;-)
Using the approach described in Fabio Iotti's answer I have created a more generic solution:
public abstract class ValidatedTextBox : TextBox {
private string m_lastText = string.Empty;
protected abstract bool IsValid(string text);
protected sealed override void OnTextChanged(EventArgs e) {
if (!IsValid(Text)) {
var pos = SelectionStart - Text.Length + m_lastText.Length;
Text = m_lastText;
SelectionStart = Math.Max(0, pos);
}
m_lastText = Text;
base.OnTextChanged(e);
}
}
"ValidatedTextBox", which contains all nontrivial validation behavior. All that's left to do is inherit from this class and override "IsValid" method with whatever validation logic is required. For example, using this class, it is possible to create "RegexedTextBox" which will accept only strings which match specific regular expression:
public abstract class RegexedTextBox : ValidatedTextBox {
private readonly Regex m_regex;
protected RegexedTextBox(string regExpString) {
m_regex = new Regex(regExpString);
}
protected override bool IsValid(string text) {
return m_regex.IsMatch(Text);
}
}
After that, inheriting from the "RegexedTextBox" class, we can easily create "PositiveNumberTextBox" and "PositiveFloatingPointNumberTextBox" controls:
public sealed class PositiveNumberTextBox : RegexedTextBox {
public PositiveNumberTextBox() : base(@"^\d*$") { }
}
public sealed class PositiveFloatingPointNumberTextBox : RegexedTextBox {
public PositiveFloatingPointNumberTextBox()
: base(@"^(\d+\" + CultureInfo.CurrentCulture.NumberFormat.NumberDecimalSeparator + @")?\d*$") { }
}
As a general rule, converting a Web Forms or MVC5 application to ASP.NET Core will require a significant amount of refactoring.
HttpContext.Current
was removed in ASP.NET Core. Accessing the current HTTP context from a separate class library is the type of messy architecture that ASP.NET Core tries to avoid. There are a few ways to re-architect this in ASP.NET Core.
You can access the current HTTP context via the HttpContext
property on any controller. The closest thing to your original code sample would be to pass HttpContext
into the method you are calling:
public class HomeController : Controller
{
public IActionResult Index()
{
MyMethod(HttpContext);
// Other code
}
}
public void MyMethod(Microsoft.AspNetCore.Http.HttpContext context)
{
var host = $"{context.Request.Scheme}://{context.Request.Host}";
// Other code
}
If you're writing custom middleware for the ASP.NET Core pipeline, the current request's HttpContext
is passed into your Invoke
method automatically:
public Task Invoke(HttpContext context)
{
// Do something with the current HTTP context...
}
Finally, you can use the IHttpContextAccessor
helper service to get the HTTP context in any class that is managed by the ASP.NET Core dependency injection system. This is useful when you have a common service that is used by your controllers.
Request this interface in your constructor:
public MyMiddleware(IHttpContextAccessor httpContextAccessor)
{
_httpContextAccessor = httpContextAccessor;
}
You can then access the current HTTP context in a safe way:
var context = _httpContextAccessor.HttpContext;
// Do something with the current HTTP context...
IHttpContextAccessor
isn't always added to the service container by default, so register it in ConfigureServices
just to be safe:
public void ConfigureServices(IServiceCollection services)
{
services.AddHttpContextAccessor();
// if < .NET Core 2.2 use this
//services.TryAddSingleton<IHttpContextAccessor, HttpContextAccessor>();
// Other code...
}
Edit: The plugin now works with trailing whitespace characters. Thanks for pointing it out @JavaSpyder
Since most other answers didn't match what I needed(or simply didn't work at all) I modified Adrian B's answer into a proper jQuery plugin that results in pixel perfect scaling of input without requiring you to change your css or html.
Example:https://jsfiddle.net/587aapc2/
Usage:$("input").autoresize({padding: 20, minWidth: 20, maxWidth: 300});
Plugin:
//JQuery plugin:_x000D_
$.fn.textWidth = function(_text, _font){//get width of text with font. usage: $("div").textWidth();_x000D_
var fakeEl = $('<span>').hide().appendTo(document.body).text(_text || this.val() || this.text()).css({font: _font || this.css('font'), whiteSpace: "pre"}),_x000D_
width = fakeEl.width();_x000D_
fakeEl.remove();_x000D_
return width;_x000D_
};_x000D_
_x000D_
$.fn.autoresize = function(options){//resizes elements based on content size. usage: $('input').autoresize({padding:10,minWidth:0,maxWidth:100});_x000D_
options = $.extend({padding:10,minWidth:0,maxWidth:10000}, options||{});_x000D_
$(this).on('input', function() {_x000D_
$(this).css('width', Math.min(options.maxWidth,Math.max(options.minWidth,$(this).textWidth() + options.padding)));_x000D_
}).trigger('input');_x000D_
return this;_x000D_
}_x000D_
_x000D_
_x000D_
_x000D_
//have <input> resize automatically_x000D_
$("input").autoresize({padding:20,minWidth:40,maxWidth:300});
_x000D_
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>_x000D_
<input value="i magically resize">_x000D_
<br/><br/>_x000D_
called with:_x000D_
$("input").autoresize({padding: 20, minWidth: 40, maxWidth: 300});
_x000D_
I've just created a javascript shim to achieve this goal. Take a look if you want, it's a proof-of-concept, but take care: it's a early version and still needs some work.
Where do these characters occur? Do you see them if you examine the XML data in, say, notepad? Or do you see them when examining the XML data in the debugger. If it is the latter, they are only escape characters for the "
characters, and so part of the actual XML data.
Install tesseract from https://github.com/UB-Mannheim/tesseract/wiki and add the path of tesseract.exe to the Path environment variable.
For those who using version 7.8.5, the Auto-indent settings is now located at "Settings" -> "Preferences..." -> "Auto-Completion".
The simplest way:
td:nth-child(2) {
padding-right: 20px;
}?
But that won't work if you need to work with background color or images in your table. In that case, here is a slightly more advanced solution (CSS3):
td:nth-child(2) {
border-right: 10px solid transparent;
-webkit-background-clip: padding;
-moz-background-clip: padding;
background-clip: padding-box;
}
It places a transparent border to the right of the cell and pulls the background color/image away from the border, creating the illusion of spacing between the cells.
Note: For this to work, the parent table must have border-collapse: separate
. If you have to work with border-collapse: collapse
then you have to apply the same border style to the next table cell, but on the left side, to accomplish the same results.
Unidirectional. Just add the inversedBy:(Foreign Column Name) to make it Bidirectional.
# config/yaml/ProductStore.dcm.yml
ProductStore:
type: entity
id:
product:
associationKey: true
store:
associationKey: true
fields:
status:
type: integer(1)
createdAt:
type: datetime
updatedAt:
type: datetime
manyToOne:
product:
targetEntity: Product
joinColumn:
name: product_id
referencedColumnName: id
store:
targetEntity: Store
joinColumn:
name: store_id
referencedColumnName: id
I hope it helps. See you.
There is nothing called background opacity. Opacity is applied to the element, its contents and all its child elements. And this behavior cannot be changed just by overriding the opacity in child elements.
Child vs parent opacity has been a long standing issue and the most common fix for it is using rgba(r,g,b,alpha)
background colors. But in this case, since it is a background-image, that solution won't work. One solution would be to generate the image as a PNG with the required opacity in the image itself. Another solution would be to take the child div out and make it absolutely positioned.
TL:DR; return promises from you actions only when necessary, but DRY chaining the same actions.
For a long time I also though that returning actions contradicts the Vuex cycle of uni-directional data flow.
But, there are EDGE CASES where returning a promise from your actions might be "necessary".
Imagine a situation where an action can be triggered from 2 different components, and each handles the failure case differently. In that case, one would need to pass the caller component as a parameter to set different flags in the store.
Dumb example
Page where the user can edit the username in navbar and in /profile page (which contains the navbar). Both trigger an action "change username", which is asynchronous. If the promise fails, the page should only display an error in the component the user was trying to change the username from.
Of course it is a dumb example, but I don't see a way to solve this issue without duplicating code and making the same call in 2 different actions.
In Windows CMD line, find out the Process ID that hold a connection on the bind port by entering following command:
C:> netstat -a -o
-a show all connections
-o show process identifier
And then Terminate the process.
In my case, I am restricted to only using the sftp command.
So, I had to use a batchfile with sftp. I created a script such as the following. This assumes you are working in the /tmp directory, and you want to put the files in the destdir_on_remote_system on the remote system. This also only works with a noninteractive login. You need to set up public/private keys so you can login without entering a password. Change as needed.
#!/bin/bash
cd /tmp
# start script with list of files to transfer
ls -1 fileset1* > batchfile1
ls -1 fileset2* >> batchfile1
sed -i -e 's/^/put /' batchfile1
echo "cd destdir_on_remote_system" > batchfile
cat batchfile1 >> batchfile
rm batchfile1
sftp -b batchfile user@host
Add into the global properties section in the pom file:
<project>
...
<properties>
<additionalparam>-Xdoclint:none</additionalparam>
</properties>
The common solution provided here in the other answers (adding that property in the plugins section) did not work for some reason. Only by setting it globally I could build the javadoc jar successfully.
I just upgraded a WXWindows project to Python 2.7 and had no end of trouble getting Pydev to recognize the new interpreter. Did the same thing as above configuring the interpreter, made a fresh install of Eclipse and Pydev. Thought some part of python must have been corrupt, so I re-installed everything again. Arghh! Closed and reopened the project, and restarted Eclipse between all of these changes.
FINALLY noticed you can 'remove the PyDev project config' by right clicking on project. Then it can be made into a PyDev project again, now it is good as gold!
if you want to populate a table in SQL SERVER you can use while statement as follows:
declare @llenandoTabla INT = 0;
while @llenandoTabla < 10000
begin
insert into employeestable // Name of my table
(ID, FIRSTNAME, LASTNAME, GENDER, SALARY) // Parameters of my table
VALUES
(555, 'isaias', 'perez', 'male', '12220') //values
set @llenandoTabla = @llenandoTabla + 1;
end
Hope it helps.
I received A server with the specified hostname could not be found.
. I figured out my MacOS app had turned on App Sandboxing. The easiest way to avoid problem is to turn off Sandbox.
The biggest benefit is that the code is more succinct. The VS editor will also have the IntelliSense support that some of the other view engines don't have.
Declarative HTML Helpers also look pretty cool as doing HTML helpers within C# code reminds me of custom controls in ASP.NET. I think they took a page from partials but with the inline code.
So some definite benefits over the asp.net view engine.
With contrast to a view engine like spark though:
Spark is still more succinct, you can keep the if's and loops within a html tag itself. The markup still just feels more natural to me.
You can code partials exactly how you would do a declarative helper, you'd just pass along the variables to the partial and you have the same thing. This has been around with spark for quite awhile.
The code you have at the moment seems to be all right. Check what the checkboxes array contains using this. Add this code on the top of your php script and see whether the checkboxes are being passed to your script.
echo '<pre>'.print_r($_POST['myCheckboxes'], true).'</pre>';
exit;
I think you want to give Share button, clicking on which the suitable media/website option should be there to share with it. In Android, you need to create createChooser
for the same.
Sharing Text:
Intent sharingIntent = new Intent(Intent.ACTION_SEND);
sharingIntent.setType("text/plain");
sharingIntent.putExtra(android.content.Intent.EXTRA_TEXT, "This is the text that will be shared.");
startActivity(Intent.createChooser(sharingIntent,"Share using"));
Sharing binary objects (Images, videos etc.)
Intent sharingIntent = new Intent(Intent.ACTION_SEND);
Uri screenshotUri = Uri.parse(path);
sharingIntent.setType("image/png");
sharingIntent.putExtra(Intent.EXTRA_STREAM, screenshotUri);
startActivity(Intent.createChooser(sharingIntent, "Share image using"));
FYI, above code are referred from Sharing content in Android using ACTION_SEND Intent
Easy way:
Open the file bootstrap-datepicker.js
Go to line 1399 and find format: 'mm/dd/yyyy'
.
Now you can change the date format here.
Tried it and working well
$('#MyModal').on('hidden.bs.modal', function () {
$(this).find('form').trigger('reset');
})
reset
is dom build-in funtion, you can also use $(this).find('form')[0].reset();
And Bootstrap's modal class exposes a few events for hooking into modal functionality, detail at here.
hide.bs.modal
This event is fired immediately when the hide instance method has been called.
hidden.bs.modal
This event is fired when the modal has finished being hidden from the user (will wait for CSS transitions to complete).
It depends on the kind of numbers and what you will allow. Handling numbers with decimals is more difficult than simple integers. Handling situations where multiple cultures are allowed is more complicated again.
The basics are these:
What a great misunderstanding between events and delegates!!! A delegate specifies a TYPE (such as a class
, or an interface
does), whereas an event is just a kind of MEMBER (such as fields, properties, etc). And, just like any other kind of member an event also has a type. Yet, in the case of an event, the type of the event must be specified by a delegate. For instance, you CANNOT declare an event of a type defined by an interface.
Concluding, we can make the following Observation: the type of an event MUST be defined by a delegate. This is the main relation between an event and a delegate and is described in the section II.18 Defining events of ECMA-335 (CLI) Partitions I to VI:
In typical usage, the TypeSpec (if present) identifies a delegate whose signature matches the arguments passed to the event’s fire method.
However, this fact does NOT imply that an event uses a backing delegate field. In truth, an event may use a backing field of any different data structure type of your choice. If you implement an event explicitly in C#, you are free to choose the way you store the event handlers (note that event handlers are instances of the type of the event, which in turn is mandatorily a delegate type---from the previous Observation). But, you can store those event handlers (which are delegate instances) in a data structure such as a List
or a Dictionary
or any other else, or even in a backing delegate field. But don’t forget that it is NOT mandatory that you use a delegate field.
Another option might be node-querystring.
It's available in both npm
and bower
, which is why I have been using it.
I have encountered the same issue. This command didn't work for me either:
npm config set strict-ssl false
After digging deeper, I found out that this link was block by our IT admin.
http://registry.npmjs.org/npm
So if you are facing the same issue, make sure this link is accessible to your browser first.
import java.util.*;
public class matrixcecil {
public static void main(String args[]){
List<Integer> k1=new ArrayList<Integer>(10);
k1.add(23);
k1.add(10);
k1.add(20);
k1.add(24);
int i=0;
while(k1.size()<10){
if(i==(k1.get(k1.size()-1))){
}
i=k1.get(k1.size()-1);
k1.add(30);
i++;
break;
}
System.out.println(k1);
}
}
I think this example will help you for better solution.
In kotlin, you can create extensions functions on resources (activities|fragments |context) that will convert your string to an html span
e.g.
fun Resources.getHtmlSpannedString(@StringRes id: Int): Spanned = getString(id).toHtmlSpan()
fun Resources.getHtmlSpannedString(@StringRes id: Int, vararg formatArgs: Any): Spanned = getString(id, *formatArgs).toHtmlSpan()
fun Resources.getQuantityHtmlSpannedString(@PluralsRes id: Int, quantity: Int): Spanned = getQuantityString(id, quantity).toHtmlSpan()
fun Resources.getQuantityHtmlSpannedString(@PluralsRes id: Int, quantity: Int, vararg formatArgs: Any): Spanned = getQuantityString(id, quantity, *formatArgs).toHtmlSpan()
fun String.toHtmlSpan(): Spanned = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
Html.fromHtml(this, Html.FROM_HTML_MODE_LEGACY)
} else {
Html.fromHtml(this)
}
Usage
//your strings.xml
<string name="greeting"><![CDATA[<b>Hello %s!</b><br>]]>This is newline</string>
//in your fragment or activity
resources.getHtmlSpannedString(R.string.greeting, "World")
EDIT even more extensions
fun Context.getHtmlSpannedString(@StringRes id: Int): Spanned = getString(id).toHtmlSpan()
fun Context.getHtmlSpannedString(@StringRes id: Int, vararg formatArgs: Any): Spanned = getString(id, *formatArgs).toHtmlSpan()
fun Context.getQuantityHtmlSpannedString(@PluralsRes id: Int, quantity: Int): Spanned = resources.getQuantityString(id, quantity).toHtmlSpan()
fun Context.getQuantityHtmlSpannedString(@PluralsRes id: Int, quantity: Int, vararg formatArgs: Any): Spanned = resources.getQuantityString(id, quantity, *formatArgs).toHtmlSpan()
fun Activity.getHtmlSpannedString(@StringRes id: Int): Spanned = getString(id).toHtmlSpan()
fun Activity.getHtmlSpannedString(@StringRes id: Int, vararg formatArgs: Any): Spanned = getString(id, *formatArgs).toHtmlSpan()
fun Activity.getQuantityHtmlSpannedString(@PluralsRes id: Int, quantity: Int): Spanned = resources.getQuantityString(id, quantity).toHtmlSpan()
fun Activity.getQuantityHtmlSpannedString(@PluralsRes id: Int, quantity: Int, vararg formatArgs: Any): Spanned = resources.getQuantityString(id, quantity, *formatArgs).toHtmlSpan()
fun Fragment.getHtmlSpannedString(@StringRes id: Int): Spanned = getString(id).toHtmlSpan()
fun Fragment.getHtmlSpannedString(@StringRes id: Int, vararg formatArgs: Any): Spanned = getString(id, *formatArgs).toHtmlSpan()
fun Fragment.getQuantityHtmlSpannedString(@PluralsRes id: Int, quantity: Int): Spanned = resources.getQuantityString(id, quantity).toHtmlSpan()
fun Fragment.getQuantityHtmlSpannedString(@PluralsRes id: Int, quantity: Int, vararg formatArgs: Any): Spanned = resources.getQuantityString(id, quantity, *formatArgs).toHtmlSpan()
100% working Concept to send email with attachment in php :
if (isset($_POST['submit'])) {
extract($_POST);
require_once('mail/class.phpmailer.php');
$subject = "$name Applied For - $position";
$email_message = "<div>Thanks for Applying ....</div> ";
$mail = new PHPMailer;
$mail->IsSMTP(); // telling the class to use SMTP
$mail->Host = "mail.companyname.com"; // SMTP server
$mail->SMTPDebug = 0;
$mail->SMTPAuth = true;
$mail->SMTPSecure = "ssl";
$mail->Host = "smtp.gmail.com";
$mail->Port = 465;
$mail->IsHTML(true);
$mail->Username = "[email protected]"; // GMAIL username
$mail->Password = "mailPassword"; // GMAIL password
$mail->SetFrom('[email protected]', 'new application submitted');
$mail->AddReplyTo("[email protected]","First Last");
$mail->Subject = "your subject";
$mail->AltBody = "To view the message, please use an HTML compatible email viewer!"; // optional, comment out and test
$mail->MsgHTML($email_message);
$address = '[email protected]';
$mail->AddAddress($address, "companyname");
$mail->AddAttachment($_FILES['file']['tmp_name'], $_FILES['file']['name']); // attachment
if (!$mail->Send()) {
/* Error */
echo 'Message not Sent! Email at [email protected]';
} else {
/* Success */
echo 'Sent Successfully! <b> Check your Mail</b>';
}
}
I used this code for google smtp mail sending with Attachment....
Note: Download PHPMailer Library from here -> https://github.com/PHPMailer/PHPMailer
Try BeanComparator from Apache Commons.
import org.apache.commons.beanutils.BeanComparator;
BeanComparator fieldComparator = new BeanComparator("fruitName");
Collections.sort(fruits, fieldComparator);
You can select the rows from the table you want to export in the MySQL Workbench SQL Editor. You will find an Export button in the resultset that will allow you to export the records to a CSV file, as shown in the following image:
Please also keep in mind that by default MySQL Workbench limits the size of the resultset to 1000 records. You can easily change that in the Preferences dialog:
Hope this helps.
I am posting a way to use _netrc
to download materials from the site www.course.com.
If someone is going to use the coursera-dl to download the open-class materials on www.coursera.com, and on the Windows OS someone wants to use a file like ".netrc" which is in like-Unix OS to add the option -n
instead of -U <username> -P <password>
for convenience. He/she can do it like this:
Check the home path on Windows OS: setx HOME %USERPROFILE%
(refer to VonC's answer). It will save the HOME
environment variable as C:\Users\"username"
.
Locate into the directory C:\Users\"username"
and create a file name _netrc
.NOTE: there is NOT any suffix.
the content is like: machine coursera-dl login <user> password <pass>
Use a command like coursera-dl -n --path PATH <course name>
to download the class materials. More coursera-dl options details for this page.
Until all modern browsers will start support css-selector :focus-visible,
the simplest and possibly best way to save accessibility is to remove this tricky focus only for mouse users and to save it for keyboard users:
1.Use this tiny polyfill (about 10kb): https://github.com/WICG/focus-visible
2.Add next code somewhere in your css:
.js-focus-visible :focus:not(.focus-visible) {
outline: none;
}
Browser-support of css4-selector :focus-visible right now very weak:
https://caniuse.com/#search=focus-visible
Have you tried to increase output_buffering in your php.ini?
(Edit: Forget my previous babble...)
Ok, there might be situations where you would go either to the model or to some other url... But I don't really think this belongs in the model, the view (or maybe the model) sounds more apropriate.
About the routes, as far as I know the routes is for the actions in controllers (wich usually "magically" uses a view), not directly to views. The controller should handle all requests, the view should present the results and the model should handle the data and serve it to the view or controller. I've heard a lot of people here talking about routes to models (to the point I'm allmost starting to beleave it), but as I understand it: routes goes to controllers. Of course a lot of controllers are controllers for one model and is often called <modelname>sController
(e.g. "UsersController" is the controller of the model "User").
If you find yourself writing nasty amounts of logic in a view, try to move the logic somewhere more appropriate; request and internal communication logic probably belongs in the controller, data related logic may be placed in the model (but not display logic, which includes link tags etc.) and logic that is purely display related would be placed in a helper.
For my example :first 'MainActivity' implements 'View.OnClickListener' than start the code ....
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
init();}
public void init(){
foryou = (Button) this.findViewById(R.id.btn_foryou);
following = (Button) findViewById(R.id.btn_following);
popular = (Button) findViewById(R.id.btn_popular);
watching = (Button) findViewById(R.id.btn_continuewatching);
mProgress = (ProgressBar) findViewById(R.id.pb);
foryou.setOnClickListener(this);
following.setOnClickListener(this);
popular.setOnClickListener(this);
watching.setOnClickListener(this);
mProgress.setOnClickListener(this);
public void onClick(View v) {
switch (v.getId()) {
case R.id.btn_foryou:
foryou.setPaintFlags(foryou.getPaintFlags() | Paint.UNDERLINE_TEXT_FLAG);
break;
case R.id.btn_following:
following.setPaintFlags(following.getPaintFlags() | Paint.UNDERLINE_TEXT_FLAG);
break;
case R.id.btn_popular:
popular.setPaintFlags(popular.getPaintFlags() | Paint.UNDERLINE_TEXT_FLAG);
break;
case R.id.btn_continuewatching:
watching.setPaintFlags(watching.getPaintFlags() | Paint.UNDERLINE_TEXT_FLAG);
break;
case R.id.btn_5:
// foryou.setPaintFlags(foryou.getPaintFlags() | Paint.UNDERLINE_TEXT_FLAG);
break;
default:
foryou.setPaintFlags(foryou.getPaintFlags() | Paint.UNDERLINE_TEXT_FLAG);
}
}
1) What is the difference between awk and sed ?
Both are tools that transform text. BUT awk can do more things besides just manipulating text. Its a programming language by itself with most of the things you learn in programming, like arrays, loops, if/else flow control etc You can "program" in sed as well, but you won't want to maintain the code written in it.
2) What kind of application are best use cases for sed and awk tools ?
Conclusion: Use sed for very simple text parsing. Anything beyond that, awk is better. In fact, you can ditch sed altogether and just use awk. Since their functions overlap and awk can do more, just use awk. You will reduce your learning curve as well.
Just remove the border and add a background image in css
Example:
$("#form").on('submit', function() {_x000D_
alert($("#submit-icon").val());_x000D_
});
_x000D_
#submit-icon {_x000D_
background-image: url("https://pixabay.com/static/uploads/photo/2016/10/18/21/22/california-1751455__340.jpg"); /* Change url to wanted image */_x000D_
background-size: cover;_x000D_
border: none;_x000D_
width: 32px;_x000D_
height: 32px;_x000D_
cursor: pointer;_x000D_
color: transparent;_x000D_
}
_x000D_
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>_x000D_
<form id="form">_x000D_
<input type="submit" id="submit-icon" value="test">_x000D_
</form>
_x000D_
Either change the collation of one (or both) of the strings so that they match, or else add a COLLATE
clause to your expression.
What is this "collation" stuff anyway?
As documented under Character Sets and Collations in General:
A character set is a set of symbols and encodings. A collation is a set of rules for comparing characters in a character set. Let's make the distinction clear with an example of an imaginary character set.
Suppose that we have an alphabet with four letters: “
A
”, “B
”, “a
”, “b
”. We give each letter a number: “A
” = 0, “B
” = 1, “a
” = 2, “b
” = 3. The letter “A
” is a symbol, the number 0 is the encoding for “A
”, and the combination of all four letters and their encodings is a character set.Suppose that we want to compare two string values, “
A
” and “B
”. The simplest way to do this is to look at the encodings: 0 for “A
” and 1 for “B
”. Because 0 is less than 1, we say “A
” is less than “B
”. What we've just done is apply a collation to our character set. The collation is a set of rules (only one rule in this case): “compare the encodings.” We call this simplest of all possible collations a binary collation.But what if we want to say that the lowercase and uppercase letters are equivalent? Then we would have at least two rules: (1) treat the lowercase letters “
a
” and “b
” as equivalent to “A
” and “B
”; (2) then compare the encodings. We call this a case-insensitive collation. It is a little more complex than a binary collation.In real life, most character sets have many characters: not just “
A
” and “B
” but whole alphabets, sometimes multiple alphabets or eastern writing systems with thousands of characters, along with many special symbols and punctuation marks. Also in real life, most collations have many rules, not just for whether to distinguish lettercase, but also for whether to distinguish accents (an “accent” is a mark attached to a character as in German “Ö
”), and for multiple-character mappings (such as the rule that “Ö
” = “OE
” in one of the two German collations).
Further examples are given under Examples of the Effect of Collation.
Okay, but how does MySQL decide which collation to use for a given expression?
As documented under Collation of Expressions:
In the great majority of statements, it is obvious what collation MySQL uses to resolve a comparison operation. For example, in the following cases, it should be clear that the collation is the collation of column
charset_name
:SELECT x FROM T ORDER BY x; SELECT x FROM T WHERE x = x; SELECT DISTINCT x FROM T;
However, with multiple operands, there can be ambiguity. For example:
SELECT x FROM T WHERE x = 'Y';
Should the comparison use the collation of the column
x
, or of the string literal'Y'
? Bothx
and'Y'
have collations, so which collation takes precedence?Standard SQL resolves such questions using what used to be called “coercibility” rules.
[ deletia ]MySQL uses coercibility values with the following rules to resolve ambiguities:
Use the collation with the lowest coercibility value.
If both sides have the same coercibility, then:
If both sides are Unicode, or both sides are not Unicode, it is an error.
If one of the sides has a Unicode character set, and another side has a non-Unicode character set, the side with Unicode character set wins, and automatic character set conversion is applied to the non-Unicode side. For example, the following statement does not return an error:
SELECT CONCAT(utf8_column, latin1_column) FROM t1;
It returns a result that has a character set of
utf8
and the same collation asutf8_column
. Values oflatin1_column
are automatically converted toutf8
before concatenating.For an operation with operands from the same character set but that mix a
_bin
collation and a_ci
or_cs
collation, the_bin
collation is used. This is similar to how operations that mix nonbinary and binary strings evaluate the operands as binary strings, except that it is for collations rather than data types.
So what is an "illegal mix of collations"?
An "illegal mix of collations" occurs when an expression compares two strings of different collations but of equal coercibility and the coercibility rules cannot help to resolve the conflict. It is the situation described under the third bullet-point in the above quotation.
The particular error given in the question, Illegal mix of collations (latin1_general_cs,IMPLICIT) and (latin1_general_ci,IMPLICIT) for operation '='
, tells us that there was an equality comparison between two non-Unicode strings of equal coercibility. It furthermore tells us that the collations were not given explicitly in the statement but rather were implied from the strings' sources (such as column metadata).
That's all very well, but how does one resolve such errors?
As the manual extracts quoted above suggest, this problem can be resolved in a number of ways, of which two are sensible and to be recommended:
Change the collation of one (or both) of the strings so that they match and there is no longer any ambiguity.
How this can be done depends upon from where the string has come: Literal expressions take the collation specified in the collation_connection
system variable; values from tables take the collation specified in their column metadata.
Force one string to not be coercible.
I omitted the following quote from the above:
MySQL assigns coercibility values as follows:
An explicit
COLLATE
clause has a coercibility of 0. (Not coercible at all.)The concatenation of two strings with different collations has a coercibility of 1.
The collation of a column or a stored routine parameter or local variable has a coercibility of 2.
A “system constant” (the string returned by functions such as
USER()
orVERSION()
) has a coercibility of 3.The collation of a literal has a coercibility of 4.
NULL
or an expression that is derived fromNULL
has a coercibility of 5.
Thus simply adding a COLLATE
clause to one of the strings used in the comparison will force use of that collation.
Whilst the others would be terribly bad practice if they were deployed merely to resolve this error:
Force one (or both) of the strings to have some other coercibility value so that one takes precedence.
Use of CONCAT()
or CONCAT_WS()
would result in a string with a coercibility of 1; and (if in a stored routine) use of parameters/local variables would result in strings with a coercibility of 2.
Change the encodings of one (or both) of the strings so that one is Unicode and the other is not.
This could be done via transcoding with CONVERT(expr USING transcoding_name)
; or via changing the underlying character set of the data (e.g. modifying the column, changing character_set_connection
for literal values, or sending them from the client in a different encoding and changing character_set_client
/ adding a character set introducer). Note that changing encoding will lead to other problems if some desired characters cannot be encoded in the new character set.
Change the encodings of one (or both) of the strings so that they are both the same and change one string to use the relevant _bin
collation.
Methods for changing encodings and collations have been detailed above. This approach would be of little use if one actually needs to apply more advanced collation rules than are offered by the _bin
collation.
JULI logging levels for Tomcat
SEVERE - Serious failures
WARNING - Potential problems
INFO - Informational messages
CONFIG - Static configuration messages
FINE - Trace messages
FINER - Detailed trace messages
FINEST - Highly detailed trace messages
You can find here more https://documentation.progress.com/output/ua/OpenEdge_latest/index.html#page/pasoe-admin/tomcat-logging.html
The aptitude --download-only ...
approach only works if you have a debian distro with internet connection in your hands.
If you don't, I think it is better to run the following script on the disconnected debian machine:
apt-get --print-uris --yes install <my_package_name> | grep ^\' | cut -d\' -f2 >downloads.list
move the downloads.list file into a connected linux (or non linux) machine, and run:
wget --input-file myurilist
this downloads all your files into the current directory.After that you can copy them on an USB key and install in your disconnected debian machine.
credits: http://www.tuxradar.com/answers/517
PS I basically copied the blog post because it was not very readable, and in case the post will disappear.
Maybe you want to track the remote branch with a local branch:
git branch new-local-branch
git branch --set-upstream-to=origin/remote-branch new-local-branch
git checkout new-local-branch
git pull
The Read method takes a byte parameter because that is the buffer it will read into. It's a common Idiom in some circles and makes some sense when you think about it.
This way you can determine how many bytes will be read by the reader and inspect the return to see how many bytes actually were read and handle any errors appropriately.
As others have pointed in their answers bufio is probably what you want for reading from most files.
I'll add one other hint since it's really useful. Reading a line from a file is best accomplished not by the ReadLine method but the ReadBytes or ReadString method instead.
You can't insert comments inside xml tags.
Bad
<Window xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
<!-- Cool comment -->
xmlns:System="clr-namespace:System;assembly=mscorlib">
Good
<Window xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:System="clr-namespace:System;assembly=mscorlib">
<!-- Cool comment -->
Try something like this:
var node=document.createElement("LI");
var textnode=document.createTextNode(firstname);
node.appendChild(textnode);
document.getElementById("demo").appendChild(node);
Simple one, just do like this..
ListViewItem lvi = new ListViewItem(pet.Name);
lvi.SubItems.Add(pet.Type);
lvi.SubItems.Add(pet.Age);
listView.Items.Add(lvi);
Use \x
Example from postgres manual:
postgres=# \x
postgres=# SELECT * FROM pg_stat_statements ORDER BY total_time DESC LIMIT 3;
-[ RECORD 1 ]------------------------------------------------------------
userid | 10
dbid | 63781
query | UPDATE branches SET bbalance = bbalance + $1 WHERE bid = $2;
calls | 3000
total_time | 20.716706
rows | 3000
-[ RECORD 2 ]------------------------------------------------------------
userid | 10
dbid | 63781
query | UPDATE tellers SET tbalance = tbalance + $1 WHERE tid = $2;
calls | 3000
total_time | 17.1107649999999
rows | 3000
-[ RECORD 3 ]------------------------------------------------------------
userid | 10
dbid | 63781
query | UPDATE accounts SET abalance = abalance + $1 WHERE aid = $2;
calls | 3000
total_time | 0.645601
rows | 3000
To make little more easy to understand use like below, which i prefer the most. Also it permits to call multiple function at once. Obviously
setTimeout(function(){
startTimer();
function2();
function3();
}, startInterval);
Once after we build the jar will have the resource files under BOOT-INF/classes or target/classes folder, which is in classpath, use the below method and pass the file under the src/main/resources as method call getAbsolutePath("certs/uat_staging_private.ppk"), even we can place this method in Utility class and the calling Thread instance will be taken to load the ClassLoader to get the resource from class path.
public String getAbsolutePath(String fileName) throws IOException {
return Thread.currentThread().getContextClassLoader().getResource(fileName).getFile();
}
we can add the below tag to tag in pom.xml to include these resource files to build target/classes folder
<resources>
<resource>
<directory>src/main/resources</directory>
<includes>
<include>**/*.properties</include>
<include>**/*.ppk</include>
</includes>
</resource>
</resources>
My preferred way is canvas.toBlob()
But anyhow here is yet another way to convert base64 to a blob using fetch ^^,
var url = "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAACNbyblAAAAHElEQVQI12P4//8/w38GIAXDIBKE0DHxgljNBAAO9TXL0Y4OHwAAAABJRU5ErkJggg=="_x000D_
_x000D_
fetch(url)_x000D_
.then(res => res.blob())_x000D_
.then(blob => {_x000D_
var fd = new FormData()_x000D_
fd.append('image', blob, 'filename')_x000D_
_x000D_
console.log(blob)_x000D_
_x000D_
// Upload_x000D_
// fetch('upload', {method: 'POST', body: fd})_x000D_
})
_x000D_
You can load the images at the beginning and change the css attributes to show every image.
var images = array();
for( url in your_urls_array ){
var img = document.createElement( "img" );
//here the image attributes ( width, height, position, etc )
images.push( img );
}
function player( position )
{
images[position-1].style.display = "none" //be careful working with the first position
images[position].style.display = "block";
//reset position if needed
timer = setTimeOut( "player( position )", time );
}
Nowadays, in 90% of case if you working with URL in Python you probably use python-requests. Hence the question here - why not reuse URL validation from requests?
from requests.models import PreparedRequest
import requests.exceptions
def check_url(url):
prepared_request = PreparedRequest()
try:
prepared_request.prepare_url(url, None)
return prepared_request.url
except requests.exceptions.MissingSchema, e:
raise SomeException
Features:
1) for example HTML code:
<ul>
<li>
<a href="#">firstlink</a>
<span><a href="#">second link</a>
</li>
</ul>
and css rules:
1) ul li a {color:red;}
2) ul > li > a {color:blue;}
">" - symbol mean that that will be searching only child selector (parentTag > childTag)
so first css rule will apply to all links (first and second) and second rule will apply anly to first link
2) As for efficiency - I think second will be more fast - as in case with JavaScript selectors. This rule read from right to left, this mean that when rule will parse by browser, it get all links on page: - in first case it will find all parent elements for each link on page and filter all links where exist parent tags "ul" and "li" - in second case it will check only parent node of link if it is "li" tag then -> check if parent tag of "li" is "ul"
some thing like this. Hope I describe all properly for you
Use util method of java.util.Collections class, i.e
Collections.sort(list)
In fact, if you want to sort custom object you can use
Collections.sort(List<T> list, Comparator<? super T> c)
see collections api
I would store a user ID and a token. When the user comes back to the site, compare those two pieces of information against something persistent like a database entry.
As for security, just don't put anything in there that will allow someone to modify the cookie to gain extra benefits. For example, don't store their user groups or their password. Anything that can be modified that would circumvent your security should not be stored in the cookie.
I use EasyGit (a.k.a. "eg") as a super lightweight wrapper on top of (or along side of) Git. EasyGit has an "info" subcommand that gives you all kinds of super useful information, including the current branches remote tracking branch. Here's an example (where the current branch name is "foo"):
pknotz@s883422: (foo) ~/workspace/bd $ eg info Total commits: 175 Local repository: .git Named remote repositories: (name -> location) origin -> git://sahp7577/home/pknotz/bd.git Current branch: foo Cryptographic checksum (sha1sum): bd248d1de7d759eb48e8b5ff3bfb3bb0eca4c5bf Default pull/push repository: origin Default pull/push options: branch.foo.remote = origin branch.foo.merge = refs/heads/aal_devel_1 Number of contributors: 3 Number of files: 28 Number of directories: 20 Biggest file size, in bytes: 32473 (pygooglechart-0.2.0/COPYING) Commits: 62
You can also use the combination of find and awk commands to print the directory tree. For details, please refer to "How to print a multilevel tree directory structure using the linux find and awk combined commands"
find . -type d | awk -F'/' '{
depth=3;
offset=2;
str="| ";
path="";
if(NF >= 2 && NF < depth + offset) {
while(offset < NF) {
path = path "| ";
offset ++;
}
print path "|-- "$NF;
}}'
By postfixing the URL with ?WSDL
If the URL is for example:
http://webservice.example:1234/foo
You use:
http://webservice.example:1234/foo?WSDL
And the wsdl will be delivered.
winrm set winrm/config/client '@{TrustedHosts="machineA,machineB"}'
Add the following lines to the files ~/.bashrc
and ~/.bash_profile
:
# NVM changes
export NVM_DIR="$HOME/.nvm"
[ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh"
and restart the terminal or do source ~/.bashrc
or source ~/.bash_profile
. If you need command completion for nvm then also add the line:
[ -s "$NVM_DIR/bash_completion" ] && \. "$NVM_DIR/bash_completion"
Along with the above lines to ~/.bashrc
and ~/.bash_profile
.
You can do this:
git diff branch1:path/to/file branch2:path/to/file
If you have difftool configured, then you can also:
git difftool branch1:path/to/file branch2:path/to/file
Related question: How do I view git diff output with visual diff program
Either manually, like
var str = "www.test.com",
rmv = "www.";
str = str.slice( str.indexOf( rmv ) + rmv.length );
or just use .replace()
:
str = str.replace( rmv, '' );
To round out the various options suggested, here is one more: the daemon
command in GNU/Linux, which you can read about here: http://libslack.org/daemon/manpages/daemon.1.html. (apologies if this is already mentioned in one of the comments above).
select column1..... from table1
where column1=''
union
select column1..... from table2
where column1= ''
On Windows there is an experimental build that does this, as described on the mailing list, Filter by local process name
First create a class to represent your json data.
public class MyFlightDto
{
public string err_code { get; set; }
public string org { get; set; }
public string flight_date { get; set; }
// Fill the missing properties for your data
}
Using Newtonsoft JSON serializer to Deserialize a json string to it's corresponding class object.
var jsonInput = "{ org:'myOrg',des:'hello'}";
MyFlightDto flight = Newtonsoft.Json.JsonConvert.DeserializeObject<MyFlightDto>(jsonInput);
Or Use JavaScriptSerializer
to convert it to a class(not recommended as the newtonsoft json serializer seems to perform better).
string jsonInput="have your valid json input here"; //
JavaScriptSerializer jsonSerializer = new JavaScriptSerializer();
Customer objCustomer = jsonSerializer.Deserialize<Customer >(jsonInput)
Assuming you want to convert it to a Customer
classe's instance. Your class should looks similar to the JSON
structure (Properties)
One thing that needs to be mentioned. You have to use the x86 version of Python 2.7. OpenCV doesn't support Python x64. I banged my head on this for a bit until I figured that out.
That said, follow the steps in Abid Rahman K's answer. And as Antimony said, you'll need to do a 'from cv2 import cv'
Detach
is unnecessary.
The answer (as of 2013) is simple:
$('#parentNode').append($('#childNode'));
According to http://api.jquery.com/append/
You can also select an element on the page and insert it into another:
$('.container').append($('h2'));
If an element selected this way is inserted into a single location elsewhere in the DOM, it will be moved into the target (not cloned).
In JUnit 5 TestInfo
acts as a drop-in replacement for the TestName rule from JUnit 4.
From the documentation :
TestInfo is used to inject information about the current test or container into to @Test, @RepeatedTest, @ParameterizedTest, @TestFactory, @BeforeEach, @AfterEach, @BeforeAll, and @AfterAll methods.
To retrieve the method name of the current executed test, you have two options : String TestInfo.getDisplayName()
and
Method TestInfo.getTestMethod()
.
To retrieve only the name of the current test method TestInfo.getDisplayName()
may not be enough as the test method default display name is methodName(TypeArg1, TypeArg2, ... TypeArg3)
.
Duplicating method names in @DisplayName("..")
is not necessary a good idea.
As alternative you could use
TestInfo.getTestMethod()
that returns a Optional<Method>
object.
If the retrieval method is used inside a test method, you don't even need to test the Optional
wrapped value.
import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.TestInfo;
import org.junit.jupiter.api.Test;
@Test
void doThat(TestInfo testInfo) throws Exception {
Assertions.assertEquals("doThat(TestInfo)",testInfo.getDisplayName());
Assertions.assertEquals("doThat",testInfo.getTestMethod().get().getName());
}
This worked for me:
https://blog.dotkam.com/2007/04/10/mysql-reset-lost-root-password/
Step 1: Stop MySQL daemon if it is currently running
ps -ef | grep mysql - checks if mysql/mysqld is one of the running processes.
pkill mysqld - kills the daemon, if it is running.
Step 2: Run MySQL safe daemon with skipping grant tables
mysqld_safe --skip-grant-tables &
mysql -u root mysql
Step 3: Login to MySQL as root with no password
mysql -u root mysql
Step 4: Run UPDATE query to reset the root password
UPDATE user SET password=PASSWORD("value=42") WHERE user="root";
FLUSH PRIVILEGES;
In MySQL 5.7, the 'password' field was removed, now the field name is 'authentication_string':
UPDATE user SET authentication_string=PASSWORD("42") WHERE
user="root";
FLUSH PRIVILEGES;
Step 5: Stop MySQL safe daemon
Step 6: Start MySQL daemon
Use ifelse
df %>%
mutate(g = ifelse(a == 2 | a == 5 | a == 7 | (a == 1 & b == 4), 2,
ifelse(a == 0 | a == 1 | a == 4 | a == 3 | c == 4, 3, NA)))
Added - if_else: Note that in dplyr 0.5 there is an if_else
function defined so an alternative would be to replace ifelse
with if_else
; however, note that since if_else
is stricter than ifelse
(both legs of the condition must have the same type) so the NA
in that case would have to be replaced with NA_real_
.
df %>%
mutate(g = if_else(a == 2 | a == 5 | a == 7 | (a == 1 & b == 4), 2,
if_else(a == 0 | a == 1 | a == 4 | a == 3 | c == 4, 3, NA_real_)))
Added - case_when Since this question was posted dplyr has added case_when
so another alternative would be:
df %>% mutate(g = case_when(a == 2 | a == 5 | a == 7 | (a == 1 & b == 4) ~ 2,
a == 0 | a == 1 | a == 4 | a == 3 | c == 4 ~ 3,
TRUE ~ NA_real_))
Added - arithmetic/na_if If the values are numeric and the conditions (except for the default value of NA at the end) are mutually exclusive, as is the case in the question, then we can use an arithmetic expression such that each term is multiplied by the desired result using na_if
at the end to replace 0 with NA.
df %>%
mutate(g = 2 * (a == 2 | a == 5 | a == 7 | (a == 1 & b == 4)) +
3 * (a == 0 | a == 1 | a == 4 | a == 3 | c == 4),
g = na_if(g, 0))
Leaving aside the fact that your text file is broken (U+2018 is a left quotation mark, not an apostrophe): iconv can be used to transliterate unicode characters to ascii.
You'll have to google for "iconvcodec", since the module seems not to be supported anymore and I can't find a canonical home page for it.
>>> import iconvcodec
>>> from locale import setlocale, LC_ALL
>>> setlocale(LC_ALL, '')
>>> u'\u2018'.encode('ascii//translit')
"'"
Alternatively you can use the iconv
command line utility to clean up your file:
$ xxd foo
0000000: e280 980a ....
$ iconv -t 'ascii//translit' foo | xxd
0000000: 270a '.
You can use the break keyword.
You can do this through straight javascript and DOM, but I really recommend learning JQuery. Here is a function you can use to actually toggle that object.
EDIT: Adding the actual code:
Solution:
HTML snippet:
<a href="#" id="showAll" title="Show Tags">Show All Tags</a>
<ul id="tags" class="subforums" style="display:none;overflow-x: visible; overflow-y: visible; ">
<li>Tag 1</li>
<li>Tag 2</li>
<li>Tag 3</li>
<li>Tag 4</li>
<li>Tag 5</li>
</ul>
Javascript code using JQuery from Google's Content Distribution Network: https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js
$(function() {
$('#showAll').click(function(){ //Adds click event listener
$('#tags').toggle('slow'); // Toggles visibility. Use the 'slow' parameter to add a nice effect.
});
});
You can test directly from this link: http://jsfiddle.net/vssJr/5/
Additional Comments on JQuery:
Someone has suggested that using JQuery for something like this is wrong because it is a 50k Library. I have a strong opinion against that.
JQuery is widely used because of the huge advantages it offers (like many other javascript frameworks). Additionally, JQuery is hosted by Content Distribution Networks (CDNs) like Google's CDN that will guarantee that the library is cached in the client's browser. It will have minimal impact on the client.
Additionally, with JQuery you can use powerful selectors, adding event listener, and use functions that are for the most part guaranteed to be cross-browser.
If you are a beginner and want to learn Javascript, please don't discount frameworks like JQuery. It will make your life so much easier.
You can check it with utility method "isEmpty" from TextUtils,
isEmpty(CharSequence str) method check both condition, for null and length.
public static boolean isEmpty(CharSequence str) {
if (str == null || str.length() == 0)
return true;
else
return false;
}
@Cort3z: if the problem is still present, this hotfix: https://support.microsoft.com/en-us/kb/2891362 should solve it (from win7 sp1 to 8.1)
To Encrypt:
$ openssl bf < arquivo.txt > arquivo.txt.bf
To Decrypt:
$ openssl bf -d < arquivo.txt.bf > arquivo.txt
bf === Blowfish in CBC mode
My opinion,
Task.Delay()
is asynchronous. It doesn't block the current thread. You can still do other operations within current thread. It returns a Task return type (Thread.Sleep()
doesn't return anything ). You can check if this task is completed(use Task.IsCompleted
property) later after another time-consuming process.
Thread.Sleep()
doesn't have a return type. It's synchronous. In the thread, you can't really do anything other than waiting for the delay to finish.
As for real-life usage, I have been programming for 15 years. I have never used Thread.Sleep()
in production code. I couldn't find any use case for it.
Maybe that's because I mostly do web application development.
The soapAction must passed as a http-header parameter - when used, it's not part of the http-body/payload.
Look here for an example with apache httpclient: http://svn.apache.org/repos/asf/httpcomponents/oac.hc3x/trunk/src/examples/PostSOAP.java
Check this article. One example from there:
@Test
public void listEquality() {
List<Integer> expected = new ArrayList<Integer>();
expected.add(5);
List<Integer> actual = new ArrayList<Integer>();
actual.add(5);
assertEquals(expected, actual);
}
XMLBlueprint 7.5 can do the following: - generate sample xml from dtd - generate sample xml from relax ng schema - generate sample xml from xml schema
You can scale the image with pygame.transform.scale
:
import pygame
picture = pygame.image.load(filename)
picture = pygame.transform.scale(picture, (1280, 720))
You can then get the bounding rectangle of picture
with
rect = picture.get_rect()
and move the picture with
rect = rect.move((x, y))
screen.blit(picture, rect)
where screen
was set with something like
screen = pygame.display.set_mode((1600, 900))
To allow your widgets to adjust to various screen sizes, you could make the display resizable:
import os
import pygame
from pygame.locals import *
pygame.init()
screen = pygame.display.set_mode((500, 500), HWSURFACE | DOUBLEBUF | RESIZABLE)
pic = pygame.image.load("image.png")
screen.blit(pygame.transform.scale(pic, (500, 500)), (0, 0))
pygame.display.flip()
while True:
pygame.event.pump()
event = pygame.event.wait()
if event.type == QUIT:
pygame.display.quit()
elif event.type == VIDEORESIZE:
screen = pygame.display.set_mode(
event.dict['size'], HWSURFACE | DOUBLEBUF | RESIZABLE)
screen.blit(pygame.transform.scale(pic, event.dict['size']), (0, 0))
pygame.display.flip()
This is similar to PierreBdR
, without copying the map.
#include <map>
using namespace std;
bool create_map(map<int,int> &m)
{
m[1] = 2;
m[3] = 4;
m[5] = 6;
return true;
}
static map<int,int> m;
static bool _dummy = create_map (m);
Feedback Guys, first create database example live; before execute sql file below.
sqlcmd -U SA -P yourPassword -S YourHost -d live -i live.sql
Here's what's been working for me:
<plugin>
<artifactId>exec-maven-plugin</artifactId>
<groupId>org.codehaus.mojo</groupId>
<executions>
<execution><!-- Run our version calculation script -->
<id>Version Calculation</id>
<phase>generate-sources</phase>
<goals>
<goal>exec</goal>
</goals>
<configuration>
<executable>${basedir}/scripts/calculate-version.sh</executable>
</configuration>
</execution>
</executions>
</plugin>
Its a start, it can list:
models = Dir.new("#{RAILS_ROOT}/app/models").entries
Looking some more...
You can set the timeout value in the connection string, but after you've connected it's read-only. You can read more at http://msdn.microsoft.com/en-us/library/system.data.sqlclient.sqlconnection.connectiontimeout.aspx
As Anil implies, ConnectionTimeout may not be what you need; it controls how long the ADO driver will wait when establishing a new connection. Your usage seems to indicate a need to wait longer than normal for a particular SQL query to execute, and in that case Anil is exactly right; use CommandTimeout (which is R/W) to change the expected completion time for an individual SqlCommand.
You can't extend Enum
as it's a static class. You can only extend instances of a type. With this in mind, you're going to have to create a static method yourself to do this; the following should work when combined with your existing method GetDescription
:
public static class EnumHelper
{
public static T GetEnumFromString<T>(string value)
{
if (Enum.IsDefined(typeof(T), value))
{
return (T)Enum.Parse(typeof(T), value, true);
}
else
{
string[] enumNames = Enum.GetNames(typeof(T));
foreach (string enumName in enumNames)
{
object e = Enum.Parse(typeof(T), enumName);
if (value == GetDescription((Enum)e))
{
return (T)e;
}
}
}
throw new ArgumentException("The value '" + value
+ "' does not match a valid enum name or description.");
}
}
And the usage of it would be something like this:
Animal giantPanda = EnumHelper.GetEnumFromString<Animal>("Giant Panda");
It appears that powershell.exe does not fully evaluate script arguments when the -File
parameter is used. In particular, the $false
argument is being treated as a string value, in a similar way to the example below:
PS> function f( [bool]$b ) { $b }; f -b '$false'
f : Cannot process argument transformation on parameter 'b'. Cannot convert value
"System.String" to type "System.Boolean", parameters of this type only accept
booleans or numbers, use $true, $false, 1 or 0 instead.
At line:1 char:36
+ function f( [bool]$b ) { $b }; f -b <<<< '$false'
+ CategoryInfo : InvalidData: (:) [f], ParentContainsErrorRecordException
+ FullyQualifiedErrorId : ParameterArgumentTransformationError,f
Instead of using -File
you could try -Command
, which will evaluate the call as script:
CMD> powershell.exe -NoProfile -Command .\RunScript.ps1 -Turn 1 -Unify $false
Turn: 1
Unify: False
As David suggests, using a switch argument would also be more idiomatic, simplifying the call by removing the need to pass a boolean value explicitly:
CMD> powershell.exe -NoProfile -File .\RunScript.ps1 -Turn 1 -Unify
Turn: 1
Unify: True
I usually think fairly highly of http://cdnjs.com/ and they are listing:
//cdnjs.cloudflare.com/ajax/libs/placeholder-shiv/0.2/placeholder-shiv.js
Not sure who's code that is but it looks straightforward:
document.observe('dom:loaded', function(){
var _test = document.createElement('input');
if( ! ('placeholder' in _test) ){
//we are in the presence of a less-capable browser
$$('*[placeholder]').each(function(elm){
if($F(elm) == ''){
var originalColor = elm.getStyle('color');
var hint = elm.readAttribute('placeholder');
elm.setStyle('color:gray').setValue(hint);
elm.observe('focus',function(evt){
if($F(this) == hint){
this.clear().setStyle({color: originalColor});
}
});
elm.observe('blur', function(evt){
if($F(this) == ''){
this.setValue(hint).setStyle('color:gray');
}
});
}
}).first().up('form').observe('submit', function(evt){
evt.stop();
this.select('*[placeholder]').each(function(elm){
if($F(elm) == elm.readAttribute('placeholder')) elm.clear();
});
this.submit();
});
}
});
This code uses vanilla JavaScript. It creates a new <style>
element. It sets the text content of that element to be a string containing the new CSS. And it appends that element directly to the iframe document's head.
Keep in mind, however, that accessing elements of a document loaded from another origin is not permitted (for security reasons) -- contentDocument
of the iframe
element will evaluate to null when attempted from the browsing context of the page embedding the frame.
var iframe = document.getElementById('the-iframe');
var style = document.createElement('style');
style.textContent =
'body {' +
' background-color: some-color;' +
' background-image: some-image;' +
'}'
;
iframe.contentDocument.head.appendChild(style);
Note that this answer is outdated! The mysql extension is no longer available out of the box as of PHP7. If you want to use the old mysql functions in PHP7, you will have to compile ext/mysql from PECL. See the other answers for more current solutions.
This would work, see more documentation here : http://php.net/manual/en/function.mysql-fetch-array.php
$result = mysql_query("SELECT names FROM Customers");
$storeArray = Array();
while ($row = mysql_fetch_array($result, MYSQL_ASSOC)) {
$storeArray[] = $row['names'];
}
// now $storeArray will have all the names.
Fast forward to 2018 and C++17.
static_assert 'works' at compile time only
using namespace std::literals;
namespace STANDARD {
constexpr
inline
auto
compiletime_static_string_view_constant() {
// make and return string view literal
// will stay the same for the whole application lifetime
// will exhibit standard and expected interface
// will be usable at both
// runtime and compile time
// by value semantics implemented for you
auto when_needed_ = "compile time"sv;
return when_needed_ ;
}
};
Above is a proper and legal standard C++ citizen. It can get readily involved in any and all std:: algorithms, containers, utilities and a such. For example:
// test the resilience
auto return_by_val = []() {
auto return_by_val = []() {
auto return_by_val = []() {
auto return_by_val = []() {
return STANDARD::compiletime_static_string_view_constant();
};
return return_by_val();
};
return return_by_val();
};
return return_by_val();
};
// actually a run time
_ASSERTE(return_by_val() == "compile time");
// compile time
static_assert(
STANDARD::compiletime_static_string_view_constant()
== "compile time"
);
Enjoy the standard C++
These are the easiest solutions.
By Index of
string title = "STRING";
if (title.IndexOf("string", 0, StringComparison.CurrentCultureIgnoreCase) != -1)
{
// contains
}
By Changing case
string title = "STRING";
bool contains = title.ToLower().Contains("string")
By Regex
Regex.IsMatch(title, "string", RegexOptions.IgnoreCase);
Here's a different approach. The heart of it was created by turning on the Macro Recorder and filtering the columns per your specifications. Then there's a bit of code to copy the results. It will run faster than looping through each row and column:
Sub FilterAndCopy()
Dim LastRow As Long
Sheets("Sheet2").UsedRange.Offset(0).ClearContents
With Worksheets("Sheet1")
.Range("$A:$E").AutoFilter
.Range("$A:$E").AutoFilter field:=1, Criteria1:="#N/A"
.Range("$A:$E").AutoFilter field:=2, Criteria1:="=String1", Operator:=xlOr, Criteria2:="=string2"
.Range("$A:$E").AutoFilter field:=3, Criteria1:=">0"
.Range("$A:$E").AutoFilter field:=5, Criteria1:="Number"
LastRow = .Range("A" & .Rows.Count).End(xlUp).Row
.Range("A1:A" & LastRow).SpecialCells(xlCellTypeVisible).EntireRow.Copy _
Destination:=Sheets("Sheet2").Range("A1")
End With
End Sub
As a side note, your code has more loops and counter variables than necessary. You wouldn't need to loop through the columns, just through the rows. You'd then check the various cells of interest in that row, much like you did.
This is a quick example
plot(rnorm(30), xlab = expression(paste("4"^"th")))
JavaScript validation is not secure as anybody can change what your script does in the browser. Using it for enhancing the visual experience is ok though.
var textBox = document.getElementById("myTextBox");
var textLength = textBox.value.length;
if(textLength > 5)
{
//red
textBox.style.backgroundColor = "#FF0000";
}
else
{
//green
textBox.style.backgroundColor = "#00FF00";
}
You can solve it using Android support compat libraries. :)
// mutate to not share its state with any other drawable
Drawable drawableWrap = DrawableCompat.wrap(drawable).mutate();
DrawableCompat.setTint(drawableWrap, ContextCompat.getColor(getContext(), R.color.your_color))
Even there exist an accepted answer, I'll like to demonstrate the following (with Python 2.7.2 and Numpy 1.6.0 on Vista):
In []: x= rand(1e5)
In []: %timeit isnan(x.min())
10000 loops, best of 3: 200 us per loop
In []: %timeit isnan(x.sum())
10000 loops, best of 3: 169 us per loop
In []: %timeit isnan(dot(x, x))
10000 loops, best of 3: 134 us per loop
In []: x[5e4]= NaN
In []: %timeit isnan(x.min())
100 loops, best of 3: 4.47 ms per loop
In []: %timeit isnan(x.sum())
100 loops, best of 3: 6.44 ms per loop
In []: %timeit isnan(dot(x, x))
10000 loops, best of 3: 138 us per loop
Thus, the really efficient way might be heavily dependent on the operating system. Anyway dot(.)
based seems to be the most stable one.
You may not have any collation issues in your database whatsoever, but if you restored a copy of your database from a backup on a server with a different collation than the origin, and your code is creating temporary tables, those temporary tables would inherit collation from the server and there would be conflicts with your database.
Using map (halfdanrump's answer) is best for me, though haven't timed it...
But if you go for a dictionary, and if you have a big_dict:
so e.g.:
big_dict = {'a':1,'b':2,'c':3,................................................}
req = ['a','c','w']
{k:big_dict.get(k,None) for k in req )
# or
{k:big_dict[k] for k in req if k in big_dict)
Note that in the converse case, that the req is big, but my_dict is small, you should loop through my_dict instead.
In general, we are doing an intersection and the complexity of the problem is O(min(len(dict)),min(len(req))). Python's own implementation of intersection considers the size of the two sets, so it seems optimal. Also, being in c and part of the core library, is probably faster than most not optimized python statements. Therefore, a solution that I would consider is:
dict = {'a':1,'b':2,'c':3,................................................}
req = ['a','c','w',...................]
{k:dic[k] for k in set(req).intersection(dict.keys())}
It moves the critical operation inside python's c code and will work for all cases.
Geometric calculations for GIS or cartography, such as finding the edge of a circle.
join
methodThe join
method is built exactly for these types of situations. You can join any number of DataFrames together with it. The calling DataFrame joins with the index of the collection of passed DataFrames. To work with multiple DataFrames, you must put the joining columns in the index.
The code would look something like this:
filenames = ['fn1', 'fn2', 'fn3', 'fn4',....]
dfs = [pd.read_csv(filename, index_col=index_col) for filename in filenames)]
dfs[0].join(dfs[1:])
With @zero's data, you could do this:
df1 = pd.DataFrame(np.array([
['a', 5, 9],
['b', 4, 61],
['c', 24, 9]]),
columns=['name', 'attr11', 'attr12'])
df2 = pd.DataFrame(np.array([
['a', 5, 19],
['b', 14, 16],
['c', 4, 9]]),
columns=['name', 'attr21', 'attr22'])
df3 = pd.DataFrame(np.array([
['a', 15, 49],
['b', 4, 36],
['c', 14, 9]]),
columns=['name', 'attr31', 'attr32'])
dfs = [df1, df2, df3]
dfs = [df.set_index('name') for df in dfs]
dfs[0].join(dfs[1:])
attr11 attr12 attr21 attr22 attr31 attr32
name
a 5 9 5 19 15 49
b 4 61 14 16 4 36
c 24 9 4 9 14 9
ReactJs defines the following synthetic events for mouse events:
onClick onContextMenu onDoubleClick onDrag onDragEnd onDragEnter onDragExit
onDragLeave onDragOver onDragStart onDrop onMouseDown onMouseEnter onMouseLeave
onMouseMove onMouseOut onMouseOver onMouseUp
As you can see there is no hover event, because browsers do not define a hover event natively.
You will want to add handlers for onMouseEnter and onMouseLeave for hover behavior.
This feature has been added in dplyr v0.3. You can now pass a named character vector to the by
argument in left_join
(and other joining functions) to specify which columns to join on in each data frame. With the example given in the original question, the code would be:
left_join(test_data, kantrowitz, by = c("first_name" = "name"))
There are an awful lot of stabs in the dark here, so I'll add my own.
In my case, I also got a message that there was a missing lock file, and a recommendation to run dnu restore
in the package manager console. I did so, restarted VS, and everything is now working.
The language
attribute has been deprecated for a long time, and should not be used.
When W3C was working on HTML5, they discovered all browsers have "text/javascript" as the default script type
, so they standardized it to be the default value. Hence, you don't need type
either.
For pages in XHTML 1.0 or HTML 4.01 omitting type
is considered invalid. Try validating the following:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<script src="http://example.com/test.js"></script>
</head>
<body/>
</html>
You will be informed of the following error:
Line 4, Column 41: required attribute "type" not specified
So if you're a fan of standards, use it. It should have no practical effect, but, when in doubt, may as well go by the spec.
In bash scripts (non-interactive) by default JOB CONTROL is disabled so you can't do the the commands: job, fg, and bg.
Here is what works well for me:
#!/bin/sh
set -m # Enable Job Control
for i in `seq 30`; do # start 30 jobs in parallel
sleep 3 &
done
# Wait for all parallel jobs to finish
while [ 1 ]; do fg 2> /dev/null; [ $? == 1 ] && break; done
The last line uses "fg" to bring a background job into the foreground. It does this in a loop until fg returns 1 ($? == 1), which it does when there are no longer any more background jobs.
The outcome sql will be different but the result should be the same:
var shifts = Shifts.Where(s => !EmployeeShifts.Where(es => es.ShiftID == s.ShiftID).Any());
You can assign default parameter values inline when you first create the mixin:
@mixin clearfix($width: 'auto') {
@if $width == 'auto' {
// if width is not passed, or empty do this
} @else {
display: inline-block;
width: $width;
}
}
Make a temporary copy of your working copy, then merge into that, and diff the two.
I like this way:
ActiveSheet.UsedRange.Rows.Count
The same can be done with columns count. For me, always work. But, if you have data in another column, the code above will consider them too, because the code is looking for all cell range in the sheet.
An efficient Regexp
solution which avoids brute force
Starts with the entire string length and works downwards to 2 characters, exists as soon as a match is made
For "abaccddccefe"
the regexp tests 7 matches before returning ccddcc
.
(.)(.)(.)(.)(.)(.)(\6)(\5)(\4)(\3)(\2)(\1)
(.)(.)(.)(.)(.)(.)(\5)(\4)(\3)(\2)(\1)
(.)(.)(.)(.)(.)(\5)(\4)(\3)(\2)(\1)
(.)(.)(.)(.)(.)(\4)(\3)(\2)(\1)
(.)(.)(.)(.)(\4)(\3)(\2)(\1)
(.)(.)(.)(.)(\3)(\2)(\1)
(.)(.)(.)(\3)(\2)(\1)
Dim strTest
wscript.echo Palindrome("abaccddccefe")
Sub Test()
Dim strTest
MsgBox Palindrome("abaccddccefe")
End Sub
function
Function Palindrome(strIn)
Set objRegex = CreateObject("vbscript.regexp")
For lngCnt1 = Len(strIn) To 2 Step -1
lngCnt = lngCnt1 \ 2
strPal = vbNullString
For lngCnt2 = lngCnt To 1 Step -1
strPal = strPal & "(\" & lngCnt2 & ")"
Next
If lngCnt1 Mod 2 = 1 Then strPal = "(.)" & strPal
With objRegex
.Pattern = Replace(Space(lngCnt), Chr(32), "(.)") & strPal
If .Test(strIn) Then
Palindrome = .Execute(strIn)(0)
Exit For
End If
End With
Next
End Function
Try this... Replace you field ID with #name... a-z(a to z), A-Z(A to Z), 0-9(0 to 9)
jQuery(document).ready(function($){
$('#name').keypress(function (e) {
var regex = new RegExp("^[a-zA-Z0-9\s]+$");
var str = String.fromCharCode(!e.charCode ? e.which : e.charCode);
if (regex.test(str)) {
return true;
}
e.preventDefault();
return false;
});
});
Use \b
for word boundaries:
sed -i 's/\boldtext\b/newtext/g' <file>
You can get round this by replacing the object (and therefore the tie with the scope):
def foo(a=[]):
a = list(a)
a.append(5)
return a
Ugly, but it works.
Sometime in the future Comment out the following code in web.config
<!--<system.codedom>
<compilers>
<compiler language="c#;cs;csharp" extension=".cs" type="Microsoft.CodeDom.Providers.DotNetCompilerPlatform.CSharpCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" warningLevel="4" compilerOptions="/langversion:6 /nowarn:1659;1699;1701" />
<compiler language="vb;vbs;visualbasic;vbscript" extension=".vb" type="Microsoft.CodeDom.Providers.DotNetCompilerPlatform.VBCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" warningLevel="4" compilerOptions="/langversion:14 /nowarn:41008 /define:_MYTYPE=\"Web\" /optionInfer+" />
</compilers>
</system.codedom>-->
update the to the following code.
<system.web>
<authentication mode="None" />
<compilation debug="true" targetFramework="4.6.1" />
<httpRuntime targetFramework="4.6.1" />
<customErrors mode="Off"/>
<trust level="Full"/>
</system.web>
SELECT name, create_date, modify_date
FROM sys.objects
WHERE type = 'P'
ORDER BY modify_date DESC
The type
for a function is FN
rather than P
for procedure. Or you can filter on the name column.
If the keystore is PKCS12 type (.pfx
) you have to specify it with -storetype PKCS12
(line breaks added for readability):
keytool -list -v -keystore <path to keystore.pfx> \
-storepass <password> \
-storetype PKCS12
You can transfer array from javascript to PHP...
Javascript... ArraySender.html
<script language="javascript">
//its your javascript, your array can be multidimensional or associative
plArray = new Array();
plArray[1] = new Array(); plArray[1][0]='Test 1 Data'; plArray[1][1]= 'Test 1'; plArray[1][2]= new Array();
plArray[1][2][0]='Test 1 Data Dets'; plArray[1][2][1]='Test 1 Data Info';
plArray[2] = new Array(); plArray[2][0]='Test 2 Data'; plArray[2][1]= 'Test 2';
plArray[3] = new Array(); plArray[3][0]='Test 3 Data'; plArray[3][1]= 'Test 3';
plArray[4] = new Array(); plArray[4][0]='Test 4 Data'; plArray[4][1]= 'Test 4';
plArray[5] = new Array(); plArray[5]["Data"]='Test 5 Data'; plArray[5]["1sss"]= 'Test 5';
function convertJsArr2Php(JsArr){
var Php = '';
if (Array.isArray(JsArr)){
Php += 'array(';
for (var i in JsArr){
Php += '\'' + i + '\' => ' + convertJsArr2Php(JsArr[i]);
if (JsArr[i] != JsArr[Object.keys(JsArr)[Object.keys(JsArr).length-1]]){
Php += ', ';
}
}
Php += ')';
return Php;
}
else{
return '\'' + JsArr + '\'';
}
}
function ajaxPost(str, plArrayC){
var xmlhttp;
if (window.XMLHttpRequest){xmlhttp = new XMLHttpRequest();}
else{xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");}
xmlhttp.open("POST",str,true);
xmlhttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
xmlhttp.send('Array=' + plArrayC);
}
ajaxPost('ArrayReader.php',convertJsArr2Php(plArray));
</script>
and PHP Code... ArrayReader.php
<?php
eval('$plArray = ' . $_POST['Array'] . ';');
print_r($plArray);
?>
For eg: you are using two activity, if you want to switch over from Activity A to Activity B
Simply give like this.
Intent intent = new Intent(A.this, B.class);
startActivity(intent);
finish();
Much easier way to view the signing certificate:
jarsigner.exe -verbose -verify -certs myapk.apk
This will only show the DN, so if you have two certs with the same DN, you might have to compare by fingerprint.
Remove all the texts in android/settings.gradle and paste the below code
rootProject.name = '****Your Project Name****'
apply from: file("../node_modules/@react-native-community/cli-platform-android/native_modules.gradle"); applyNativeModulesSettingsGradle(settings)
include ':app'
This issue will usually happen when you migrate from react-native < 0.60 to react-native >0.60. If you create a new project in react-native >0.60 you will see the same settings as above mentioned
$.fn.outerHtml = function(){
if (this.length) {
var div = $('<div style="display:none"></div>');
var clone =
$(this[0].cloneNode(false)).html(this.html()).appendTo(div);
var outer = div.html();
div.remove();
return outer;
}
else {
return null;
}
};
from http://forum.jquery.com/topic/jquery-getting-html-and-the-container-element-12-1-2010
Swift 3:
let escapedString = originalString.addingPercentEncoding(withAllowedCharacters:NSCharacterSet.urlQueryAllowed)
I need to integrate with a class that need a Stream to Write on it:
XmlSchema schema;
// ... Use "schema" ...
var ret = "";
using (var ms = new MemoryStream())
{
schema.Write(ms);
ret = Encoding.ASCII.GetString(ms.ToArray());
}
//here you can use "ret"
// 6 Lines of code
I create a simple class that can help to reduce lines of code for multiples use:
public static class MemoryStreamStringWrapper
{
public static string Write(Action<MemoryStream> action)
{
var ret = "";
using (var ms = new MemoryStream())
{
action(ms);
ret = Encoding.ASCII.GetString(ms.ToArray());
}
return ret;
}
}
then you can replace the sample with a single line of code
var ret = MemoryStreamStringWrapper.Write(schema.Write);
I see that neither is faster. The compiler generates the same machine code in each condition with a different value.
if(a < 901)
cmpl $900, -4(%rbp)
jg .L2
if(a <=901)
cmpl $901, -4(%rbp)
jg .L3
My example if
is from GCC on x86_64 platform on Linux.
Compiler writers are pretty smart people, and they think of these things and many others most of us take for granted.
I noticed that if it is not a constant, then the same machine code is generated in either case.
int b;
if(a < b)
cmpl -4(%rbp), %eax
jge .L2
if(a <=b)
cmpl -4(%rbp), %eax
jg .L3
As per the question, i have listed the answers in javascript
By Selecting TagName
document.getElementsByTagName('textarea')[0].style.resize = "none";
By Selecting Id
document.getElementById('textArea').style.resize = "none";
public static void PrintFileToDefaultPrinter(string FilePath)
{
try
{
var file = File.ReadAllBytes(FilePath);
var printQueue = LocalPrintServer.GetDefaultPrintQueue();
using (var job = printQueue.AddJob())
using (var stream = job.JobStream)
{
stream.Write(file, 0, file.Length);
}
}
catch (Exception)
{
throw;
}
}
Answer for your question is below:
Swift 2.1
do {
if let postData : NSData = try NSJSONSerialization.dataWithJSONObject(dictDataToBeConverted, options: NSJSONWritingOptions.PrettyPrinted){
let json = NSString(data: postData, encoding: NSUTF8StringEncoding)! as String
print(json)}
}
catch {
print(error)
}
Not all browsers have native JSON support so there will be times where you need to use eval()
to the JSON string. Use JSON parser from http://json.org as that handles everything a lot easier for you.
Eval()
is an evil but against some browsers its a necessary evil but where you can avoid it, do so!!!!!
$Group
is an object, but you will actually need to check if $Group.samaccountname.StartsWith("string")
.
Change $Group.StartsWith("S_G_")
to $Group.samaccountname.StartsWith("S_G_")
.
You guys are doing way too much for selecting. Just select by value:
$("#mySelect").val( 3 );
They're two completely different things. ==
compares the object reference, if any, contained by a variable. .equals()
checks to see if two objects are equal according to their contract for what equality means. It's entirely possible for two distinct object instances to be "equal" according to their contract. And then there's the minor detail that since equals
is a method, if you try to invoke it on a null
reference, you'll get a NullPointerException
.
For instance:
class Foo {
private int data;
Foo(int d) {
this.data = d;
}
@Override
public boolean equals(Object other) {
if (other == null || other.getClass() != this.getClass()) {
return false;
}
return ((Foo)other).data == this.data;
}
/* In a real class, you'd override `hashCode` here as well */
}
Foo f1 = new Foo(5);
Foo f2 = new Foo(5);
System.out.println(f1 == f2);
// outputs false, they're distinct object instances
System.out.println(f1.equals(f2));
// outputs true, they're "equal" according to their definition
Foo f3 = null;
System.out.println(f3 == null);
// outputs true, `f3` doesn't have any object reference assigned to it
System.out.println(f3.equals(null));
// Throws a NullPointerException, you can't dereference `f3`, it doesn't refer to anything
System.out.println(f1.equals(f3));
// Outputs false, since `f1` is a valid instance but `f3` is null,
// so one of the first checks inside the `Foo#equals` method will
// disallow the equality because it sees that `other` == null
You could use Google Guava's:
//module dependent on ngRoute
var app=angular.module("myApp",['ngRoute']);
//spa-Route Config file
app.config(function($routeProvider,$locationProvider){
$locationProvider.hashPrefix('');
$routeProvider
.when('/',{template:'HOME'})
.when('/about/:paramOne/:paramTwo',{template:'ABOUT',controller:'aboutCtrl'})
.otherwise({template:'Not Found'});
}
//aboutUs controller
app.controller('aboutCtrl',function($routeParams){
$scope.paramOnePrint=$routeParams.paramOne;
$scope.paramTwoPrint=$routeParams.paramTwo;
});
in index.html
<a ng-href="#/about/firstParam/secondParam">About</a>
firstParam and secondParam can be anything according to your needs.
Windows 10:
open cmd
change directory where you want to create text file(movie_list.txt) for the folder (d:\videos\movies)
type following command
d:\videos\movies> dir /b /a-d > movie_list.txt
In reply to Dimitrys answer but using Ajax.BeginForm
the following works at least with MVC >5 (4 not tested).
write a model as shown in the other answers,
In the "parent view" you will probably use a table to show the data.
Model should be an ienumerable. I assume, the model has an id
-property. Howeverm below the template, a placeholder for the modal and corresponding javascript
<table>
@foreach (var item in Model)
{
<tr> <td id="[email protected]">
@Html.Partial("dataRowView", item)
</td> </tr>
}
</table>
<div class="modal fade" id="editor-container" tabindex="-1"
role="dialog" aria-labelledby="editor-title">
<div class="modal-dialog modal-lg" role="document">
<div class="modal-content" id="editor-content-container"></div>
</div>
</div>
<script type="text/javascript">
$(function () {
$('.editor-container').click(function () {
var url = "/area/controller/MyEditAction";
var id = $(this).attr('data-id');
$.get(url + '/' + id, function (data) {
$('#editor-content-container').html(data);
$('#editor-container').modal('show');
});
});
});
function success(data,status,xhr) {
$('#editor-container').modal('hide');
$('#editor-content-container').html("");
}
function failure(xhr,status,error) {
$('#editor-content-container').html(xhr.responseText);
$('#editor-container').modal('show');
}
</script>
note the "editor-success-id" in data table rows.
The dataRowView
is a partial containing the presentation of an model's item.
@model ModelView
@{
var item = Model;
}
<div class="row">
// some data
<button type="button" class="btn btn-danger editor-container" data-id="@item.Id">Edit</button>
</div>
Write the partial view that is called by clicking on row's button (via JS $('.editor-container').click(function () ...
).
@model Model
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal" aria-label="Close">
<span aria-hidden="true">×</span>
</button>
<h4 class="modal-title" id="editor-title">Title</h4>
</div>
@using (Ajax.BeginForm("MyEditAction", "Controller", FormMethod.Post,
new AjaxOptions
{
InsertionMode = InsertionMode.Replace,
HttpMethod = "POST",
UpdateTargetId = "editor-success-" + @Model.Id,
OnSuccess = "success",
OnFailure = "failure",
}))
{
@Html.ValidationSummary()
@Html.AntiForgeryToken()
@Html.HiddenFor(model => model.Id)
<div class="modal-body">
<div class="form-horizontal">
// Models input fields
</div>
</div>
<div class="modal-footer">
<button type="button" class="btn btn-default" data-dismiss="modal">Cancel</button>
<button type="submit" class="btn btn-primary">Save</button>
</div>
}
This is where magic happens: in AjaxOptions
, UpdateTargetId will replace the data row after editing, onfailure and onsuccess will control the modal.
This is, the modal will only close when editing was successful and there have been no errors, otherwise the modal will be displayed after the ajax-posting to display error messages, e.g. the validation summary.
But how to get ajaxform to know if there is an error? This is the controller part, just change response.statuscode as below in step 5:
the corresponding controller action method for the partial edit modal
[HttpGet]
public async Task<ActionResult> EditPartData(Guid? id)
{
// Find the data row and return the edit form
Model input = await db.Models.FindAsync(id);
return PartialView("EditModel", input);
}
[HttpPost, ValidateAntiForgeryToken]
public async Task<ActionResult> MyEditAction([Bind(Include =
"Id,Fields,...")] ModelView input)
{
if (TryValidateModel(input))
{
// save changes, return new data row
// status code is something in 200-range
db.Entry(input).State = EntityState.Modified;
await db.SaveChangesAsync();
return PartialView("dataRowView", (ModelView)input);
}
// set the "error status code" that will redisplay the modal
Response.StatusCode = 400;
// and return the edit form, that will be displayed as a
// modal again - including the modelstate errors!
return PartialView("EditModel", (Model)input);
}
This way, if an error occurs while editing Model data in a modal window, the error will be displayed in the modal with validationsummary methods of MVC; but if changes were committed successfully, the modified data table will be displayed and the modal window disappears.
Note: you get ajaxoptions working, you need to tell your bundles configuration to bind jquery.unobtrusive-ajax.js
(may be installed by NuGet):
bundles.Add(new ScriptBundle("~/bundles/jqueryajax").Include(
"~/Scripts/jquery.unobtrusive-ajax.js"));
It's really simple to fix the issue, however keep in mind that you should fork and commit your changes for each library you are using in their repositories to help others as well.
Let's say you have something like this in your code:
$str = "test";
echo($str{0});
since PHP 7.4 curly braces method to get individual characters inside a string has been deprecated, so change the above syntax into this:
$str = "test";
echo($str[0]);
Fixing the code in the question will look something like this:
public function getRecordID(string $zoneID, string $type = '', string $name = ''): string
{
$records = $this->listRecords($zoneID, $type, $name);
if (isset($records->result[0]->id)) {
return $records->result[0]->id;
}
return false;
}
As per https://kb.informatica.com/solution/23/Pages/69/570664.aspx adding this property works
CryptoProtocolVersion=TLSv1.2
This is a condensed version of the information found on cryptography's installation docs page. Consult that page for the latest details.
Since this SO question keeps coming up I'll drop a response here too (I am one of the pyca/cryptography developers). Here's what you need to reliably install pyca/cryptography on the 3 major platforms.
Please note in all these cases it is highly recommended that you install into a virtualenv and not into the global package space. This is not specific to cryptography but rather is generic advice to keep your Python installation reliable. The global package space in OS provided Pythons is owned by the system and installing things via pip into it is asking for trouble.
Windows
Upgrade to the latest pip and just pip install cryptography
cryptography and cffi are both shipped as statically linked wheels.
macOS (OS X)
Upgrade to the latest pip and just pip install cryptography
cryptography and cffi are both shipped as statically linked wheels. This will work for pyenv Python, system Python, homebrew Python, etc. As long as you're on the latest pip you won't even need a compiler.
Linux
Users with the latest pip running on a glibc-based distribution (almost everything except Alpine Linux) and on x86/x86-64/aarch64 no longer need a compiler or headers because you'll get a precompiled wheel automatically. So, first thing you should try is upgrading your pip!
If you aren't manylinux compatible then here's what you need to do:
You'll need a C compiler, a Rust compiler, libffi + its development headers, and openssl + its development headers.
Debian or Ubuntu derived distributions
apt-get install build-essential libssl-dev libffi-dev python-dev
followed by
pip install cryptography
Red Hat derived distributions
yum install gcc openssl-devel libffi-devel python-devel
followed by
pip install cryptography
Note that as of version 3.4 cryptography now requires a Rust compiler at build time (not at runtime) so you will additionally need Rust >= 1.41.0. Check your distribution's rust or install it via rustup
I had a hard time making this work too, the solution for me was to use both hyui and konstantin answers,
class ExampleTask extends AsyncTask<String, String, String> {
// Your onPreExecute method.
@Override
protected String doInBackground(String... params) {
// Your code.
if (condition_is_true) {
this.publishProgress("Show the dialog");
}
return "Result";
}
@Override
protected void onProgressUpdate(String... values) {
super.onProgressUpdate(values);
YourActivity.this.runOnUiThread(new Runnable() {
public void run() {
alertDialog.show();
}
});
}
}
This answer has been resolved for a while and all the available options are already out there. However in this answer I'll attempt to shed a bit more light on these options to help you understand when to use what.
This post will go through the following topics:
merge
, join
, concat
There are a few options, some simpler than others depending on the use case.
DataFrame.merge
withleft_index
andright_index
(orleft_on
andright_on
using named indexes)DataFrame.join
(joins on index)pd.concat
(joins on index)
PROS | CONS | |
---|---|---|
merge |
• supports inner/left/right/full |
• can only join two frames at a time |
join |
• supports inner/left (default)/right/full |
• only supports index-index joins |
concat |
• specializes in joining multiple DataFrames at a time |
• only supports inner/full (default) joins |
Typically, an inner join on index would look like this:
left.merge(right, left_index=True, right_index=True)
Other types of joins (left, right, outer) follow similar syntax (and can be controlled using how=...
).
Notable Alternatives
DataFrame.join
defaults to a left outer join on the index.
left.join(right, how='inner',)
If you happen to get ValueError: columns overlap but no suffix specified
, you will need to specify lsuffix
and rsuffix=
arguments to resolve this. Since the column names are same, a differentiating suffix is required.
pd.concat
joins on the index and can join two or more DataFrames at once. It does a full outer join by default.
pd.concat([left, right], axis=1, sort=False)
For more information on concat
, see this post.
To perform an inner join using index of left, column of right, you will use DataFrame.merge
a combination of left_index=True
and right_on=...
.
left.merge(right, left_index=True, right_on='key')
Other joins follow a similar structure. Note that only merge
can perform index to column joins. You can join on multiple levels/columns, provided the number of index levels on the left equals the number of columns on the right.
join
and concat
are not capable of mixed merges. You will need to set the index as a pre-step using DataFrame.set_index
.
This post is an abridged version of my work in Pandas Merging 101. Please follow this link for more examples and other topics on merging.
For fast, OS-independent search, use scandir
https://github.com/benhoyt/scandir/#readme
Read http://bugs.python.org/issue11406 for details why.
A simpler solution would be to use sessionStorage
, in this case:
var myVariable = "Hello World";
sessionStorage['myvariable'] = myVariable;
var readValue = sessionStorage['myvariable'];
console.log(readValue);
However, keep in mind that sessionStorage
saves everything as a string, so when working with arrays / objects, you can use JSON to store them:
var myVariable = {a:[1,2,3,4], b:"some text"};
sessionStorage['myvariable'] = JSON.stringify(myVariable);
var readValue = JSON.parse(sessionStorage['myvariable']);
A page session lasts for as long as the browser is open and survives over page reloads and restores. Opening a page in a new tab or window will cause a new session to be initiated.
So, when you close the page / tab, the data is lost.
CSS properties should be set by cssText
property or setAttribute
method.
// Set multiple styles in a single statement
elt.style.cssText = "color: blue; border: 1px solid black";
// Or
elt.setAttribute("style", "color:red; border: 1px solid blue;");
Styles should not be set by assigning a string directly to the style
property (as in elt.style = "color: blue;"
), since it is considered read-only, as the style
attribute returns a CSSStyleDeclaration
object which is also read-only.
First off, I think mplot3D
worked a bit differently in matplotlib
version 0.99
than it does in the current version of matplotlib
.
Which version are you using? (Try running: python -c 'import matplotlib; print matplotlib."__version__")
I'm guessing you're running version 0.99
, in which case you'll need to either use a slightly different syntax or update to a more recent version of matplotlib
.
If you're running version 0.99
, try doing this instead of using using the projection
keyword argument:
import matplotlib.pyplot as plt
from mpl_toolkits.mplot3d import axes3d, Axes3D #<-- Note the capitalization!
fig = plt.figure()
ax = Axes3D(fig) #<-- Note the difference from your original code...
X, Y, Z = axes3d.get_test_data(0.05)
cset = ax.contour(X, Y, Z, 16, extend3d=True)
ax.clabel(cset, fontsize=9, inline=1)
plt.show()
This should work in matplotlib
1.0.x
, as well, not just 0.99
.
MS Sql
UPDATE c4 SET Price=cp.Price*p.FactorRate FROM TableNamea_A c4
inner join TableNamea_B p on c4.Calcid=p.calcid
inner join TableNamea_A cp on c4.Calcid=cp.calcid
WHERE c4..Name='MyName';
Oracle 11g
MERGE INTO TableNamea_A u
using
(
SELECT c4.TableName_A_ID,(cp.Price*p.FactorRate) as CalcTot
FROM TableNamea_A c4
inner join TableNamea_B p on c4.Calcid=p.calcid
inner join TableNamea_A cp on c4.Calcid=cp.calcid
WHERE p.Name='MyName'
) rt
on (u.TableNamea_A_ID=rt.TableNamea_B_ID)
WHEN MATCHED THEN
Update set Price=CalcTot ;
Did you import it? Importing matplotlib
is not enough.
>>> import matplotlib
>>> matplotlib.pyplot
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
AttributeError: 'module' object has no attribute 'pyplot'
but
>>> import matplotlib.pyplot
>>> matplotlib.pyplot
works.
pyplot is a submodule of matplotlib and not immediately imported when you import matplotlib.
The most common form of importing pyplot is
import matplotlib.pyplot as plt
Thus, your statements won't be too long, e.g.
plt.plot([1,2,3,4,5])
instead of
matplotlib.pyplot.plot([1,2,3,4,5])
And: pyplot
is not a function, it's a module! So don't call it, use the functions defined inside this module instead. See my example above
{{ wpis.entry.lastChangeDate|date:"SHORT_DATETIME_FORMAT" }}
Yes, it is both compiled and interpreted language. Then why we generally call it as interpreted language?
see how it is both- compiled and interpreted?
First of all I want to tell that you will like my answer more if you are from the Java world.
In the Java the source code first gets converted to the byte code through javac compiler then directed to the JVM(responsible for generating the native code for execution purpose). Now I want to show you that we call the Java as compiled language because we can see that it really compiles the source code and gives the .class file(nothing but bytecode) through:
javac Hello.java -------> produces Hello.class file
java Hello -------->Directing bytecode to JVM for execution purpose
The same thing happens with python i.e. first the source code gets converted to the bytecode through the compiler then directed to the PVM(responsible for generating the native code for execution purpose). Now I want to show you that we usually call the Python as an interpreted language because the compilation happens behind the scene and when we run the python code through:
python Hello.py -------> directly excutes the code and we can see the output provied that code is syntactically correct
@ python Hello.py it looks like it directly executes but really it first generates the bytecode that is interpreted by the interpreter to produce the native code for the execution purpose.
CPython- Takes the responsibility of both compilation and interpretation.
Look into the below lines if you need more detail:
As I mentioned that CPython compiles the source code but actual compilation happens with the help of cython then interpretation happens with the help of CPython
Now let's talk a little bit about the role of Just-In-Time compiler in Java and Python
In JVM the Java Interpreter exists which interprets the bytecode line by line to get the native machine code for execution purpose but when Java bytecode is executed by an interpreter, the execution will always be slower. So what is the solution? the solution is Just-In-Time compiler which produces the native code which can be executed much more quickly than that could be interpreted. Some JVM vendors use Java Interpreter and some use Just-In-Time compiler. Reference: click here
In python to get around the interpreter to achieve the fast execution use another python implementation(PyPy) instead of CPython. click here for other implementation of python including PyPy.
Yes, LINQ to Objects supports this with Enumerable.Concat
:
var together = first.Concat(second);
NB: Should first
or second
be null you would receive a ArgumentNullException
. To avoid this & treat nulls as you would an empty set, use the null coalescing operator like so:
var together = (first ?? Enumerable.Empty<string>()).Concat(second ?? Enumerable.Empty<string>()); //amending `<string>` to the appropriate type
As the rank doesn't depend at all from the contacts
RANKED_RSLTS
QRY_ID | RES_ID | SCORE | RANK
-------------------------------------
A | 1 | 15 | 3
A | 2 | 32 | 1
A | 3 | 29 | 2
C | 7 | 61 | 1
C | 9 | 30 | 2
Thus :
SELECT
C.*
,R.SCORE
,MYRANK
FROM CONTACTS C LEFT JOIN
(SELECT *,
MYRANK = RANK() OVER (PARTITION BY QRY_ID ORDER BY SCORE DESC)
FROM RSLTS) R
ON C.RES_ID = R.RES_ID
AND C.QRY_ID = R.QRY_ID
You could use range(10)[::-1]
which is the same thing as range(9, -1, -1)
and arguably more readable (if you're familiar with the common sequence[::-1]
Python idiom).
// The integer I want to convert
int myInt = 100;
// Casting of integer to float
float newFloat = (float) myInt
Below is an alternative implementation of a 'create user' controller method using Claims based roles.
The created claims then work with the Authorize attribute e.g. [Authorize(Roles = "Admin, User.*, User.Create")]
// POST api/User/Create
[Route("Create")]
public async Task<IHttpActionResult> Create([FromBody]CreateUserModel model)
{
if (!ModelState.IsValid)
{
return BadRequest(ModelState);
}
// Generate long password for the user
var password = System.Web.Security.Membership.GeneratePassword(25, 5);
// Create the user
var user = new ApiUser() { UserName = model.UserName };
var result = await UserManager.CreateAsync(user, password);
if (!result.Succeeded)
{
return GetErrorResult(result);
}
// Add roles (permissions) for the user
foreach (var perm in model.Permissions)
{
await UserManager.AddClaimAsync(user.Id, new Claim(ClaimTypes.Role, perm));
}
return Ok<object>(new { UserName = user.UserName, Password = password });
}
Delete
operation available on Arrays. We can symbolically delete an element by setting it to some specific value, e.g. -1, 0, etc. depending on our requirementsInsert
for arrays is basically Set
as mentioned in the beginningThe question is about doing this in bash and there's no need for python or perl as there is in fact a single command that does exactly what you want - "urlencode".
value=$(urlencode "${2}")
This is also much better, as the above perl answer, for example, doesn't encode all characters correctly. Try it with the long dash you get from Word and you get the wrong encoding.
Note, you need "gridsite-clients" installed to provide this command.
Using Java 8 you can do this in a very clean way:
String.join(delimiter, elements);
This works in three ways:
1) directly specifying the elements
String joined1 = String.join(",", "a", "b", "c");
2) using arrays
String[] array = new String[] { "a", "b", "c" };
String joined2 = String.join(",", array);
3) using iterables
List<String> list = Arrays.asList(array);
String joined3 = String.join(",", list);
You can still use HttpResponseMessage
. That capability will not go away. I felt the same way as you and argued extensively with the team that there was no need for an additional abstraction. There were a few arguments thrown around to try and justify its existence but nothing that convinced me that it was worthwhile.
That is, until I saw this sample from Brad Wilson. If you construct IHttpActionResult
classes in a way that can be chained, you gain the ability to create a "action-level" response pipeline for generating the HttpResponseMessage
. Under the covers, this is how ActionFilters
are implemented however, the ordering of those ActionFilters
is not obvious when reading the action method which is one reason I'm not a fan of action filters.
However, by creating an IHttpActionResult
that can be explicitly chained in your action method you can compose all kinds of different behaviour to generate your response.
To disable all access to sub dirs (safest) use:
<Directory full-path-to/USERS>
Order Deny,Allow
Deny from All
</Directory>
If you want to block only PHP files from being served directly, then do:
1 - Make sure you know what file extensions the server recognizes as PHP (and dont' allow people to override in htaccess). One of my servers is set to:
# Example of existing recognized extenstions:
AddType application/x-httpd-php .php .phtml .php3
2 - Based on the extensions add a Regular Expression to FilesMatch (or LocationMatch)
<Directory full-path-to/USERS>
<FilesMatch "(?i)\.(php|php3?|phtml)$">
Order Deny,Allow
Deny from All
</FilesMatch>
</Directory>
Or use Location to match php files (I prefer the above files approach)
<LocationMatch "/USERS/.*(?i)\.(php3?|phtml)$">
Order Deny,Allow
Deny from All
</LocationMatch>
Yes you can (provided you have at least the professional version of visual studio), although it requires a little setting up once you've done this it's not much different from debugging code. MSDN has a basic walkthrough.
First dump the keystore from JKS to PKCS12
1. keytool -importkeystore -srckeystore ~/.android/debug.keystore -destkeystore intermediate.p12 -srcstoretype JKS -deststoretype PKCS12
Dump the new pkcs12 file into pem
You should have both the cert and private key in pem format. Split them up. Put the part between “BEGIN CERTIFICATE” and “END CERTIFICATE” into cert.x509.pem Put the part between “BEGIN RSA PRIVATE KEY” and “END RSA PRIVATE KEY” into private.rsa.pem Convert the private key into pk8 format as expected by signapk
3. openssl pkcs8 -topk8 -outform DER -in private.rsa.pem -inform PEM -out private.pk8 -nocrypt
make sure you have these permissions:
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
Then make some activity and register a LocationListener
package com.example.location;
import android.content.Context;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.view.View;
import com.actionbarsherlock.app.SherlockFragmentActivity;
import com.google.android.gms.maps.CameraUpdate;
import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.SupportMapFragment;
import com.google.android.gms.maps.model.LatLng;
public class LocationActivity extends SherlockFragmentActivity implements LocationListener {
private GoogleMap map;
private LocationManager locationManager;
private static final long MIN_TIME = 400;
private static final float MIN_DISTANCE = 1000;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.map);
map = ((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map)).getMap();
locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, MIN_TIME, MIN_DISTANCE, this); //You can also use LocationManager.GPS_PROVIDER and LocationManager.PASSIVE_PROVIDER
}
@Override
public void onLocationChanged(Location location) {
LatLng latLng = new LatLng(location.getLatitude(), location.getLongitude());
CameraUpdate cameraUpdate = CameraUpdateFactory.newLatLngZoom(latLng, 10);
map.animateCamera(cameraUpdate);
locationManager.removeUpdates(this);
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) { }
@Override
public void onProviderEnabled(String provider) { }
@Override
public void onProviderDisabled(String provider) { }
}
map.xml
<?xml version="1.0" encoding="utf-8"?>
<fragment xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/map"
android:layout_width="match_parent"
android:layout_height="match_parent"
class="com.google.android.gms.maps.SupportMapFragment"/>
I found a website that will do this for you: http://tmpvar.com/markdown.html. Paste in your Markdown, and it'll display it for you. It seems to work just fine!
However, it doesn't seem to handle the syntax highlighting option for code; that is, the ~~~ruby
feature doesn't work. It just prints 'ruby'.