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What is the difference between HTTP and REST?
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@aefxx thank you, i didnt know that, and never read the full dissertation. i would change the votedown to voteup if it wasnt locked. you have an interesting way of debating, you could just give me a link and be done with that. shish.
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Remove duplicated rows using dplyr
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Note: dplyr now contains the distinct function for this purpose.
Original answer below:
library(dplyr)
set.seed(123)
df <- data.frame(
x = sample(0:1, 10, replace = T),
y = sample(0:1, 10, replace = T),
z = 1:10
)
One appr...
How do I tell git-svn about a remote branch created after I fetched the repo?
...3917e05ca5654a8a1e (refs/remotes/newbranch)
git-svn did all the work and now knows about the remote:
# git show-ref | grep newbranch
2df23af4733f36f5ad3c14cc1fa582ceeb3edb5c refs/remotes/newbranch
Step 3: Create your new local branch tracking the remote one:
# git checkout -b git...
How to remove all callbacks from a Handler?
...sed by sub-classes to postDelay some Runnables, and I can't manage them. Now, in the onStop event, I need to remove them before finishing the Activity (somehow I called finish() , but it still call again and again). Is there anyway to remove all callbacks from a Handler?
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How to merge 2 JSON objects from 2 files using jq?
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Since 1.4 this is now possible with the * operator. When given two objects, it will merge them recursively. For example,
jq -s '.[0] * .[1]' file1 file2
Important: Note the -s (--slurp) flag, which puts files in the same array.
Would get y...
Join vs. sub-query
...old-school MySQL user and have always preferred JOIN over sub-query. But nowadays everyone uses sub-query, and I hate it; I don't know why.
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Finding which process was killed by Linux OOM killer
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Now dstat provides the feature to find out in your running system which process is candidate for getting killed by oom mechanism
dstat --top-oom
--out-of-memory---
kill score
java 77
java 77
java ...
What is the difference between RegExp’s exec() function and String’s match() function?
...^\/]+/g;
var match;
while (match = re.exec('/a/b/c/d')) {
// match is now the next match, in array form.
}
// No more matches.
String.match does this for you and discards the captured groups.
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String to Dictionary in Python
...ring = u'{ "id":"123456789", ... }'
obj = json.loads(json_string) # obj now contains a dict of the data
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Rails ActionMailer - format sender and recipient name/email address
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It looks like the Mail gem now dupes the string passed in, so name.dup doesn't seem necessary anymore. Source reads: @display_name = str.nil? ? nil : str.dup
– philoye
Sep 7 '16 at 4:38
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