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How to estimate how much memory a Pandas' DataFrame will need?
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103
df.memory_usage() will return how many bytes each column occupies:
>>> df.memory_usag...
Understanding Linux /proc/id/maps
...tch to kernel mode. Here's a good article about it: "What is linux-gate.so.1?"
You might notice a lot of anonymous regions. These are usually created by mmap but are not attached to any file. They are used for a lot of miscellaneous things like shared memory or buffers not allocated on the heap. F...
NuGet for solutions with multiple projects
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edited Mar 9 '16 at 14:39
user3638471
answered Dec 28 '11 at 7:59
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How can I rotate an HTML 90 degrees?
...g);
transform: rotate(90deg);
}
Demo:
#container_2 {
width: 100px;
height: 100px;
border: 1px solid red;
-webkit-transform: rotate(45deg);
-moz-transform: rotate(45deg);
-o-transform: rotate(45deg);
-ms-transform: rotate(45deg);
transform: rotate(45deg);
}
<d...
Diff files present in two different directories
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You can use the diff command for that:
diff -bur folder1/ folder2/
This will output a recursive diff that ignore spaces, with a unified context:
b flag means ignoring whitespace
u flag means a unified context (3 lines before and after)
r flag means recursive
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How to create a temporary directory/folder in Java?
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18 Answers
18
Active
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How can I get the font size and font name of a UILabel?
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edited Jun 1 '14 at 20:46
answered Feb 1 '11 at 19:04
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Can I browse other people's (Apple) bug reports? [closed]
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107
As other people have said here, you can't see the bugs that other people have reported to Appl...
How to use shell commands in Makefile
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152
With:
FILES = $(shell ls)
indented underneath all like that, it's a build command. So this...
SELECT INTO using Oracle
... never be true:
create table new_table as
select * from old_table
where 1 = 2
/
Remember that CREATE TABLE ... AS SELECT creates only a table with the same projection as the source table. The new table does not have any constraints, triggers or indexes which the original table might have. Those...