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How to check whether an object is a date?
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As an alternative to duck typing via
typeof date.getMonth === 'function'
you can use the instanceof operator, i.e. But it will return true for invalid dates too, e.g. new Date('random_string') is also instance of Date
date instanceof Date
This...
Print number of keys in Redis
Is there a way to print the number of keys in Redis?
8 Answers
8
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In Bash, how do I add a string after each line in a file?
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sed -e 's/$/string after each line/' -i filename
If not, you have to make a temporary file:
typeset TMP_FILE=$( mktemp )
touch "${TMP_FILE}"
cp -p filename "${TMP_FILE}"
sed -e 's/$/string after each line/' "${TMP_FILE}" > filename
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android button selector
...ur layout file.
<Button
android:id="@+id/button1"
android:background="@drawable/selector_xml_name"
android:layout_width="200dp"
android:layout_height="126dp"
android:text="Hello" />
and done.
Edit
Following is button_effect.xml file in drawable directory
<?xml...
Script not served by static file handler on IIS7.5
...deploy my first web application to IIS on my Windows 7 Home Premium notebook. After creating the application, I had to change to the Classic App Pool, then set that pool for framework 4.0. Now I get the following error:
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What is a MIME type?
I have been reading about how to build plug-ins and this "MIME type" keeps getting discussed in it. I have tried to look into it and know that it is Multipurpose Internet Mail Extensions (MIME) but no suitable explanation of how it relates to browser plug-ins, as in what I need to know about it for ...
Best content type to serve JSONP?
I have a webservice that when called without specifying a callback will return a JSON string using application/json as the content type.
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Returning the product of a list
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Ruggero TurraRuggero Turra
13.4k1313 gold badges6666 silver badges118118 bronze badges
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Hour from DateTime? in 24 hours format
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vtortolavtortola
30.8k2424 gold badges137137 silver badges237237 bronze badges
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Plot two graphs in same plot in R
I would like to plot y1 and y2 in the same plot.
16 Answers
16
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