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Postgres: clear entire database before re-creating / re-populating from bash script
... q TEXT;
r RECORD;
BEGIN
-- triggers
FOR r IN (SELECT pns.nspname, pc.relname, pt.tgname
How to create EditText with cross(x) button at end of it?
...n, or is there any property for EditText by which it is created automatically? I want the cross button to delete whatever text written in EditText .
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Convert data.frame columns from factors to characters
... can create a logical vector of which columns are factors, and use that to selectively apply factor
f <- sapply(bobf, class) == "factor"
bobc[,f] <- lapply(bobc[,f], factor)
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Tools to search for strings inside files without indexing [closed]
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Found my text. However, did not allow me to select in the results which values to replace and which to keep. All or nothing?
– ofer.sheffer
Mar 13 '15 at 20:22
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How do I specify unique constraint for multiple columns in MySQL?
... For those people using MySQL workbench: go to the Indexes tab and select UNIQUE as your type. Give your index a name and check the appropriate columns under the section "Index Columns"
– Pakman
Jun 3 '13 at 20:42
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HTML: How to limit file upload to be only images?
...t will show all files. So the Javascript part validates whether or not the selected file is an actual image.
<div class="col-sm-8 img-upload-section">
<input name="image3" type="file" accept="image/*" id="menu_images"/>
<img id="menu_image" class="preview_img" />
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How to programmatically show next view in ViewPager?
...siest way is:
nextButton.setOnClickListener { pager.arrowScroll(View.FOCUS_RIGHT) }
prevButton.setOnClickListener { pager.arrowScroll(View.FOCUS_LEFT) }
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A Regex that will never be matched by anything
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This is actually quite simple, although it depends on the implementation / flags*:
$a
Will match a character a after the end of the string. Good luck.
WARNING:
This expression is expensive -- it will scan the entire line, find the en...
Python: What OS am I running on?
...ion of Darwin that comes with Catalina 10.15.2: en.wikipedia.org/wiki/MacOS_Catalina#Release_history
– philshem
Aug 21 at 13:28
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How do I run IDEA IntelliJ on Mac OS X with JDK 7?
...will not work with JDK 1.7 on Mac.
At the moment you must have JDK 1.6 installed so that you can run IDEA 11 and older versions.
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