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Inserting multiple rows in mysql
...
BEGIN;
INSERT INTO test_b (price_sum)
SELECT price
FROM test_a;
INSERT INTO test_c (price_summ)
SELECT price
FROM test_a;
COMMIT;
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Explicitly calling return in a function or not
...unction's body
not using return is marginally faster (according to @Alan's test, 4.3 microseconds versus 5.1)
should we all stop using return at the end of a function? I certainly won't, and I'd like to explain why. I hope to hear if other people share my opinion. And I apologize if it is not a s...
Set custom HTML5 required field validation message
...urn a string which is then displayed as the error message.
Compatibility
Tested in:
Chrome Canary 47.0.2
IE 11
Microsoft Edge (using the up-to-date version as of 28/08/2015)
Firefox 40.0.3
Opera 31.0
Old answer
You can see the old revision here: https://stackoverflow.com/revisions/16069817/...
How Do I Convert an Integer to a String in Excel VBA?
...ng was not found.
But adding an empty string to the value works, too.
Dim Test As Integer, Test2 As Variant
Test = 10
Test2 = Test & ""
//Test2 is now "10" not 10
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How to set caret(cursor) position in contenteditable element (div)?
...pan tag like this : <<div id="editable" contenteditable="true"> test1<br>test2<br><span></span> </div>
– Med Akram Z
Mar 29 '12 at 1:21
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Get the index of the object inside an array, matching a condition
...big arrays a simple loop will perform much better than findIndex:
let test = [];
for (let i = 0; i < 1e6; i++)
test.push({prop: i});
let search = test.length - 1;
let count = 100;
console.time('findIndex/predefined function');
let fn = obj => obj.prop === search;
...
How do I get the coordinates of a mouse click on a canvas element?
...PeppeL-G bounding client rectangle calculates that for you. You can easily test it in console before you post a comment (that's what I did).
– Tomáš Zato - Reinstate Monica
Nov 29 '14 at 17:10
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How to run Visual Studio post-build events for debug build only
...one line):
if "$(ConfigurationName)"=="My Debug CFG" ( xcopy "$(TargetDir)test1.tmp" "$(TargetDir)test.xml" /y) else ( xcopy "$(TargetDir)test2.tmp" "$(TargetDir)test.xml" /y)
No error 255 here.
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How to catch curl errors in PHP
...TTP errors, the following provides a better approach:
function curl_error_test($url) {
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$responseBody = curl_exec($ch);
/*
* if curl_exec failed then
* $responseBody...
How can you find and replace text in a file using the Windows command-line environment?
...shorter aliases, but this gives you something to Google for.
(Get-Content test.txt) | ForEach-Object { $_ -replace "foo", "bar" } | Set-Content test2.txt
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