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Summarizing multiple columns with dplyr? [duplicate]
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Need test on the large dataset.
– Artem Klevtsov
Mar 1 '16 at 19:21
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HMAC-SHA1 in bash
...bash scripts to invalidate CloudFront entries on AWS (like me!) (I haven't tested it yet, but I think this is the thing that is the cause of why my bash script does not work, and my PHP one does...)
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Make Div overlay ENTIRE page (not just viewport)?
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@Arve It gets you close, but it's better to use a time-tested reset sheet instead. Check out meyerweb.com/eric/tools/css/reset for more information - you'll love it, I assure you :)
– Sampson
May 17 '10 at 20:06
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How to read data From *.CSV file using javascript?
...that the op provided and included a link to the demo where the data can be tested for validity.
Update2:
Due to the shuttering of Google Code. jquery-csv has moved to GitHub
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What is the difference between `git merge` and `git merge --no-ff`?
.../ecc-config.php
# modified: ecc/readme.txt
# modified: ecc/test.php
# deleted: passthru-adapter.igs
# deleted: shop/mickey/index.php
#
# Untracked files:
# (use "git add <file>..." to include in what will be committed)
#
# ecc/upgrade.php
# ecc/w...
How to rename items in values() in Django?
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Without using any other manager method (tested on v3.0.4):
from django.db.models import F
MyModel.objects.values(renamed_value=F('cryptic_value_name'))
Excerpt from Django docs:
An F() object represents the value of a model field or annotated
column. It m...
Difference between os.getenv and os.environ.get
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Which version of Python have you tested with. On 3.7.2, os.getenv is just a wrapper for os.environ.get, so I am getting very minimal overhead.
– Preslav Rachev
Jan 7 '19 at 15:19
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What is the difference between required and ng-required?
...g-required allows you to set the required attribute depending on a boolean test (for instance, only require field B - say, a student number - if the field A has a certain value - if you selected "student" as a choice)
As an example, <input required> and <input ng-required="true"> are es...
iOS: Compare two dates
...bellow lines of code in viewDidload or according to your scenario.
-(void)testDateComaparFunc{
NSString *getTokon_Time1 = @"2016-05-31 03:19:05 +0000";
NSString *getTokon_Time2 = @"2016-05-31 03:18:05 +0000";
NSDateFormatter *dateFormatter=[NSDateFormatter new];
[dateFormatter setDateFormat:@"yyyy...
Comparing two java.util.Dates to see if they are in the same day
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This is by way the fastest solution -- thanks a lot, exactly what I was looking for; as I have to check a lot of dates ...
– Ridcully
May 11 '12 at 19:20
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