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sometimes my file just freezes in my vi |vim, what happened?
...trl-S from freezing your screen, but it's not working on my local Solaris 10 login.
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Changing a specific column name in pandas DataFrame
...columns = {'two':'new_name'})
In [28]: df
Out[28]:
one three new_name
0 1 a 9
1 2 b 8
2 3 c 7
3 4 d 6
4 5 e 5
Following is the docstring for the rename method.
Definition: df.rename(self, index=None, columns=None, co...
jQuery posting valid json in request body
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300
An actual JSON request would look like this:
data: '{"command":"on"}',
Where you're sending ...
What are the “standard unambiguous date” formats for string-to-date conversion in R?
...n-'NA' element,
and give an error if neither works.
as.Date("01 Jan 2000") yields an error because the format isn't one of the two listed above. as.Date("01/01/2000") yields an incorrect answer because the date isn't in one of the two formats listed above.
I take "standard unambiguo...
How do I parse a YAML file in Ruby?
...
Nathan
10.2k1212 gold badges4848 silver badges6262 bronze badges
answered Oct 6 '10 at 22:21
Mike WoodhouseMi...
ADB Install Fails With INSTALL_FAILED_TEST_ONLY
...y need to push the apk to device first.
$ adb push bin/hello.apk /tmp/
5210 KB/s (825660 bytes in 0.154s)
$ adb shell pm install /tmp/hello.apk
pkg: /tmp/hello.apk
Failure [INSTALL_FAILED_TEST_ONLY]
$ adb shell pm install -t /tmp/hello.apk
pkg: /tmp/hello.apk
Success
I was able to rep...
What is the Objective-C equivalent for “toString()”, for use with NSLog?
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250
It is the description instance method, declared as:
- (NSString *)description
Here's an examp...
What's the difference between .so, .la and .a library files?
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320
.so files are dynamic libraries. The suffix stands for "shared object", because all the applicat...
Class constants in python
...
edited Sep 23 '16 at 13:20
lord_t
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answered May ...
Does MySQL ignore null values on unique constraints?
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440
Yes, MySQL allows multiple NULLs in a column with a unique constraint.
CREATE TABLE table1 (x I...