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Checking Bash exit status of several commands efficiently
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"$@"
local status=$?
if (( status != 0 )); then
echo "error with $1" >&2
fi
return $status
}
mytest "$command1"
mytest "$command2"
share
|
improve this answer
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Remove Object from Array using JavaScript
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Won't that cause an error because $.each() caches the array length before looping so if you remove an element $.each() will run past the end of the (now shorter) array. (So then someArray[i] will be undefined and undefined.name will crash.)
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How to dismiss keyboard iOS programmatically when pressing return
... when I connect the delegate, though, I get warnings and/or errors. I've seen your way before, but for some reason can't get it to work.Would these methods go in viewDidLoad?
– noobsmcgoobs
Sep 12 '13 at 7:27
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Efficient way to return a std::vector in c++
...s "return by value" might be, it's the kind of code that can lead one into error. Consider the following program:
#include <string>
#include <vector>
#include <iostream>
using namespace std;
static std::vector<std::string> strings;
std::vector<std...
How to process POST data in Node.js?
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You may also return HTTP 413 Error Code (Request Entity Too Large)
– neoascetic
Jul 23 '12 at 2:03
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Is null an Object?
...ype null
According to OpenJDKs 12.0.1 javac it is:
true.toString(); // error: boolean cannot be dereferenced
null.toString(); // error: <null> cannot be dereferenced
Where the angle brackets imply that null is of an other than a primitive type. And according to JLS 4.1:
There are tw...
Cordova: start specific iOS emulator image
... I don't really know why but for me Cordova CLI would throw "Error: Cannot read property 'name' of undefined" when specifying the target with quotes, I could only get it to work by running it like this cordova run ios --target=iPhone-6. Hope this saves someone else some trouble!
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Bundling data files with PyInstaller (--onefile)
I'm trying to build a one-file EXE with PyInstaller which is to include an image and an icon. I cannot for the life of me get it to work with --onefile .
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What is the advantage of GCC's __builtin_expect in if else statements?
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I guess it should be something like:
cmp $x, 0
jne _foo
_bar:
call bar
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jmp after_if
_foo:
call foo
...
after_if:
You can see that the instructions are arranged in such an order that the bar case precedes the foo case (as opposed to the C code). This can utilise the CPU ...
Java JDBC - How to connect to Oracle using Service Name instead of SID
...elped me resolve the issue I was struggling with for days. I looked around all over the internet until I found the answered by Jim Tough on May 18 '11 at 15:17. With that answer I was able to connect. Now I want to give back and help others with a complete example. Here goes:
import java.sql.*;
p...