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How to show line number when executing bash script
...ut, I use set -x or set -v and set -e , so the script would stop when error occurs. However, it's still rather difficult for me to locate which line did the execution stop in order to locate the problem.
Is there a method which can output the line number of the script before each line is execut...
How to wait for several Futures?
...hing else.
The difference with for comprehension is that here you get the error of the first to fail, whereas with for comprehension you get the first error in traversal order of the input collection (even if another one failed first). For example:
val f1 = Future { Thread.sleep(1000) ; 5 / 0 }
va...
What is a method group in C#?
I have often encountered an error such as "cannot convert from 'method group' to 'string'" in cases like:
5 Answers
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Is it a good practice to place C++ definitions in header files?
... abomination that is a singleton) as you will run into multiple definition errors. NOTE: C++17's inline variables will make this particular example doable in the future.
As a final point, when using boost as an example of header only code, a huge detail often gets missed.
Boost is library, not use...
How do you create a random string that's suitable for a session ID in PostgreSQL?
...quire over 3000 years for a single processor. Since the unrecoverable read error rate of drives is 1 bit per 1018 bits read, at best, while the file would contain about 1020 bits, just reading the file once from end to end would result, at least, in about 100 times more mis-read UUIDs than duplicate...
Calling virtual functions inside constructors
...g a polymorphic (virtual in C++ terminology) methods is a common source of errors. In C++, at least you have the guarantee that it will never call a method on a yet unconstructed object...
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How to pip install a package with min and max version range?
...ersioning works wouldn't write ~=0.2.1 in a requirements file. That's user error, not a disadvantage of the ~= prefix.
– Brad Root
Nov 7 '19 at 18:15
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JS Client-Side Exif Orientation: Rotate and Mirror JPEG Images
...
window.loadImage("/your-image.jpg", function (img) {
if (img.type === "error") {
console.log("couldn't load image:", img);
} else {
window.EXIF.getData(img, function () {
var orientation = EXIF.getTag(this, "Orientation");
var canvas = window.loadImage.scale(img, {orien...
Application Loader: “Cannot proceed with delivery: an existing transporter instance is currently upl
I have been unable to overcome this error in Application Loader. I've quit, restarted, tried different computers - it's like the server is hung up on an op that I never initiated and it won't time out. Has anyone seen it before and beaten it?
...
Return empty cell from formula in Excel
... a formula in a cell in Excel must be a number, text, logical (boolean) or error. There is no formula cell value type of "empty" or "blank".
One practice that I have seen followed is to use NA() and ISNA(), but that may or may not really solve your issue since there is a big differrence in the way ...