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Pandas read_csv low_memory and dtype options
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The deprecated low_memory option
The low_memory option is not properly deprecated, but it should be, since it does not actually do anything differently[source]
The reason you get this low_memory warning is because guessing dtypes for each column i...
Initializing multiple variables to the same value in Java
I'm looking for a clean and efficient method of declaring multiple variables of the same type and of the same value. Right now I have:
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td widths, not working?
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It should be:
<td width="200">
or
<td style="width: 200px">
Note that if your cell contains some content that doesn't fit into the 200px (like somelongwordwithoutanyspaces), the cell will stretch nevertheless, unless your CSS contains table-layout...
How to check if AlarmManager already has an alarm set?
...om google seem to indicate that there is no way to do this. Is this still correct? I need to do this check in order to advise the user before any action is taken to create a new alarm.
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How can I make git do the “did you mean” suggestion?
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According to git-config(1), you want to set help.autocorrect appropriately. For example, git config --global help.autocorrect 5 will make it wait half a second before running the command so you can see the message first.
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cannot load such file — zlib even after using rvm pkg install zlib
...ling zlib from apt-get and then reinstalling ruby to not use the rvm directory for zlib.
Here's how do:
$ sudo apt-get install zlib1g-dev
$ rvm reinstall 1.9.3
[Edit] As commenter @chrisfinne mentions, on CentOS/RedHat based systems:
$ sudo yum install zlib-devel
$ rvm reinstall 1.9.3
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What does the question mark and the colon (?: ternary operator) mean in objective-c?
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This is the C ternary operator (Objective-C is a superset of C):
label.frame = (inPseudoEditMode) ? kLabelIndentedRect : kLabelRect;
is semantically equivalent to
if(inPseudoEditMode) {
label.frame = kLabelIndentedRect;
} else {
label.frame = kLab...
Check if two lists are equal [duplicate]
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Use SequenceEqual to check for sequence equality because Equals method checks for reference equality.
var a = ints1.SequenceEqual(ints2);
Or if you don't care about elements order use Enumerable.All method:
var a = ints1.All(ints2.Contains);
The s...
How can I remove a key and its value from an associative array?
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+1: Thanks for the help. PHP newb here, but it's worth noting that if you are trying to perform these edits inside of a foreach loop, then you need to prepend an ampersand to your enumeration variable to allow write access.
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How do I change the IntelliJ IDEA default JDK?
I use IntelliJ IDEA as my development environment, and Maven for dependency management. I frequently build my project structure (directories, poms, etc) outside of IDEA and then import the project into IDEA using Import project from external model . This works great, except that in my poms I spec...