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What is the proper way to test if a parameter is empty in a batch file?
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if "!param1!"=="" ( echo it is empty )
rem ... or use the DEFINED keyword now
if defined param1 echo There is something
The advantage of this is that dealing with param1 is absolutly safe.
And the setting of param1 will work in many cases, like
test.bat hello"this is"a"test
test.bat you^&...
ValueError: setting an array element with a sequence
...itrary Python objects:
numpy.array([1.2, "abc"], dtype=object)
Without knowing what your code shall accomplish, I can't judge if this is what you want.
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Where am I? - Get country
An android mobile actually does know quite well where it is - but is there a way of retrieving the country by something like a country code?
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How to make ruler always be shown in Sublime text 2?
...s": [],
to
"rulers": [80],
in order to display one ruler at column 80.
Now for the rub, it seems that one must use a monospaced font in order to display rulers so you'll also need to change
"font_face": "",
to
"font_face": "Monospace",
or any other monospaced font.
Thinking about it, this ...
Android: Remove all the previous activities from the back stack
...you will launch any activity using intent and finish the current activity. Now use ActivityCompat.finishAffinity() instead finish(). it will finish all stacked activity below current activity. It works fine for me.
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Days between two dates? [duplicate]
...ee how many full days have passed between two dates?
Here's what I'm doing now.
4 Answers
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How to pass a variable from Activity to Fragment, and pass it back?
... args = getArguments();
int index = args.getInt("index", 0);
If you want now communicate from your fragment with your activity (sending or not data), you need to use interfaces. The way you can do this is explained really good in the documentation tutorial of communication between fragments. Becau...
Must JDBC Resultsets and Statements be closed separately although the Connection is closed afterward
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I'm now using Oracle with Java. Here my point of view :
You should close ResultSet and Statement explicitly because Oracle has problems previously with keeping the cursors open even after closing the connection. If you don't clo...
How should I use Outlook to send code snippets?
...spell checker to ignore the text with this style.
With this style you can now paste the code as text and select your new style. Outlook will not correct the text and will not perform the spell check on it.
Below is the summary of the style I have defined for emailing the code snippets.
Do not che...
What is the purpose of flush() in Java streams?
...ust Flush It. Calls to writer.flush() say, "send whatever's in the buffer, now!
reference book: https://www.amazon.com/Head-First-Java-Kathy-Sierra/dp/0596009208
pages:453
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