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Current time in microseconds in java
... current time in microseconds (six digits of decimal fraction). Actual results and accuracy depend on the underlying clock hardware of the host computer.
– Basil Bourque
Nov 7 '17 at 21:42
...
How to use WPF Background Worker
...ct sender, DoWorkEventArgs e)
{
for (int i = 0; i < 200; i++)
{
if (backgroundWorker.CancellationPending)
{
e.Cancel = true;
return;
}
backgro...
Devise - How do I forbid certain users from signing in?
...r the User model.
Then add the code below to the User model:
class User < ActiveRecord::Base
#this method is called by devise to check for "active" state of the model
def active_for_authentication?
#remember to call the super
#then put our own check to determine "active" state using...
Compare two Byte Arrays? (Java)
...condLength ) {
return false;
}
for( int index = 0; index < firstLength; ++index ) {
if( first[firstOffset+index] != second[secondOffset+index]) {
return false;
}
}
return true;
}
...
How can Xcode 6 adaptive UIs be backwards-compatible with iOS 7 and iOS 6?
...ard compatible.
Size classes are backward compatible when:
- The app is built using Xcode version 6 or later
- The deployment target of the app is earlier than iOS 8
- Size classes are specified in a storyboard or xib
- The value of the height component is not compact
Because iOS 7 doesn't respect ...
Objective-C implicit conversion loses integer precision 'NSUInteger' (aka 'unsigned long') to 'int'
...
Change key in Project > Build Setting
"typecheck calls to printf/scanf : NO"
Explanation : [How it works]
Check calls to printf and scanf, etc., to make sure that the arguments supplied have types appropriate to the format string specified, an...
How to export table as CSV with headings on Postgresql?
... @arilwan psql -c "\COPY (SELECT * FROM mytable) TO STDOUT" > mytable.csv
– Juha Palomäki
Jun 6 '19 at 16:00
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show 6 more...
Python glob multiple filetypes
...
glob.glob -> glob.iglob so that the iterators chain is fully lazy evaluated
– rodrigob
Aug 6 '13 at 13:57
1
...
What's the difference between git reset --mixed, --soft, and --hard?
... C (master)
Now let's do git reset --mixed B. (Note: --mixed is the default option). Once again, master and HEAD point to B, but this time the index is also modified to match B. If we run git commit at this point, nothing will happen since the index matches HEAD. We still have the changes in the w...
UITableView didSelectRowAtIndexPath: not being called on first tap
...
I experienced the following issue:
first tap in row -> no effect, no selection, never
second tap and following -> correct selection behavior, always
In my case, my error was checking Show Selection on Touch in Interface Builder. You can uncheck it in IB here:
Hope tha...