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How do I use floating-point division in bash?
...IDTH/$IMG2_WIDTH") without $(( )) (double parentheses) ; which is expanded by the bash before executing command
– Nahuel Fouilleul
Oct 4 '12 at 7:32
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Sample random rows in dataframe
...red Nov 25 '11 at 19:15
John ColbyJohn Colby
20.3k33 gold badges5151 silver badges6767 bronze badges
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Best way to test exceptions with Assert to ensure they will be thrown
...is not sufficient. The exception may not be catchable - since it's thrown by a method that is invoked by reflection - or perhaps I just want to check that other conditions hold, say a transaction is rolled back or some value has still been set. In these cases I wrap it in a try/catch block that ex...
What's the difference between setWebViewClient vs. setWebChromeClient?
...ry about those things... you can just do this:
webView= (WebView) findViewById(R.id.webview);
webView.setWebChromeClient(new WebChromeClient());
webView.setWebViewClient(new WebViewClient());
webView.getSettings().setJavaScriptEnabled(true);
webView.loadUrl(url);
And your WebView will (in th...
Can't subtract offset-naive and offset-aware datetimes
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UTC doesn't need a timezone, by definition. If the other datetime object is timezone aware then surely that provides the offset relative to UTC. UTC times may not have a timezone but they are not 'naive' and Python is handling this wrongly.
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jQuery how to bind onclick event to dynamically added HTML element [duplicate]
... Indeed, when you are targeting known markup structures created by some other code. But here he was inserting the elements himself, and there is no clear selector for them (it's just an anchor, which there might be many of), so he would have to add additional markup to be able to target t...
Python unittest - opposite of assertRaises?
...hiwaylon - No, this is the correct solution in fact. The solution proposed by user9876 is conceptually flawed: if you test for the non-raising of say ValueError, but ValueError is instead raised, your test must exit with a failure condition, not an error one. On the other hand, if in running the sam...
Why would you use Oracle database? [closed]
...performance tuning tools, and finicky optimizer. Whatever savings you get by foregoing an MS Win Server license will immediately be eaten up by lost productivity.
– engil
May 13 '14 at 20:42
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How to convert string to boolean php
...valuate to boolean true unless they have a value that's considered "empty" by PHP (taken from the documentation for empty):
"" (an empty string);
"0" (0 as a string)
If you need to set a boolean based on the text value of a string, then you'll need to check for the presence or otherwise of that ...
Error: “Cannot modify the return value” c#
...n you access the Origin property you're accessing a copy of the value held by the class, not the value itself as you would with a reference type (class), so if you set the X property on it then you're setting the property on the copy and then discarding it, leaving the original value unchanged. This...