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Returning multiple values from a C++ function
... put the function definition of divide into a separate cpp file? I get the error error: use of ‘auto divide(int, int)’ before deduction of ‘auto’. How do I solve this?
– Adriaan
Feb 23 '18 at 20:26
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Django connection to PostgreSQL: “Peer authentication failed”
This is the error I am receiving when I try to get to my Django admin site. I had been using MySQL database no problem. I am new to PostgreSQL, but decided to switch because the host I ultimately plan to use for this project does not have MySQL.
...
Truncate Two decimal places without rounding
... of decimal places (say 25) it will cause the end result to have precision error. I fixed it by changing the factor type to decimal.
– TheKingDave
Aug 19 '13 at 14:34
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Forward host port to docker container
Is it possible to have a Docker container access ports opened by the host? Concretely I have MongoDB and RabbitMQ running on the host and I'd like to run a process in a Docker container to listen to the queue and (optionally) write to the database.
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Check if a string matches a regex in Bash script
...e your answer as it lets the date function deal with the dates and not the error-prone regexs'
– Ali
Feb 1 '17 at 1:38
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How to use a link to call JavaScript?
...e it will work for browsers with javascript not enabled, or if there is an error in the javascript code that doesn't work.
javascript runs on page load:
window.onload = function(){
document.getElementById("DaLink").onclick = function(){
if(funcitonToCall()){
...
Sample random rows in dataframe
...ow make it better by checking first if n<=nrow(df) and stopping with an error.
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Using ZXing to create an Android barcode scanning app [duplicate]
..." and paste to your project.
Clean and build project. If your project show error about "switch - case", you should change them to "if - else".
Completed. Clean and build project. You can click on "Proprties" > "Android" > click on "Is Libraries" to use for your project.
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Android get free size of internal/external memory
...rmatSize(availableBlocks * blockSize);
} else {
return ERROR;
}
}
public static String getTotalExternalMemorySize() {
if (externalMemoryAvailable()) {
File path = Environment.getExternalStorageDirectory();
StatFs stat = new StatFs(...
Check if a variable is of function type
...rence (open your javascript console and reload page, there might be logged error messages). Note: Revision 3 added isFunctionD (based on only typeof == "function") - and it seems to be much faster than Underscore's "fast" version.
– Joel Purra
Feb 2 '12 at 18:3...