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Understanding exactly when a data.table is a reference to (vs a copy of) another data.table
...pies at all.
Or, we can modify the original DT by reference :
DT[2, b := 600]
# a b
# [1,] 1 11
# [2,] 2 600
.Internal(inspect(DT))
# @0000000003B7E2A0 19 VECSXP g0c7 [OBJ,NAM(2),ATT] (len=2, tl=100)
# @00000000040C2288 14 REALSXP g0c2 [NAM(2)] (len=2, tl=0) 1,2
# @00000000040C2250 14...
Ruby max integer
...
Jordan Running
87.4k1414 gold badges154154 silver badges156156 bronze badges
answered Feb 11 '09 at 23:59
Andrew Gri...
Output of git branch in tree like fashion
.../release-0.8.1 is NOT merged in (1 commit ahead)
- bump to 0.8.1 [dab43fb] (wmorgan-sup@...; 2 days ago)
[ ] labels-before-subj is NOT merged in (1 commit ahead)
- put labels before subject in thread index view [790b64d] (marka@...; 4 weeks ago)
{x} origin/enclosed-message-display-tweaks mer...
Git: Cannot see new remote branch
...bc3ee5 refs/heads/fix/PROJECT-352
179b545ac9dab49f85cecb5aca0d85cec8fb152d refs/heads/fix/PROJECT-5
e850a29846ee1ecc9561f7717205c5f2d78a992b refs/heads/master
ab4539faa42777bf98fb8785cec654f46f858d2a refs/heads/release/1.0.5
dee135fb65685cec287c99b9d195d92441a60c2d ...
Example for sync.WaitGroup correct?
...g.Add(1)
go dosomething(150, &wg)
wg.Add(1)
go dosomething(600, &wg)
wg.Wait()
fmt.Println("Done")
}
However, it is rather pointless to call wg.Add over and over again when you already know how many times it will be called.
Waitgroups panic if the counter falls belo...
Convenient C++ struct initialisation
...d in C++ and you don't want style B then how about using style BX:
FooBar fb = { /*.foo=*/ 12, /*.bar=*/ 3.4 }; // :)
At least help at some extent.
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How to Configure SSL for Amazon S3 bucket
...
Custom domain SSL certs were just added today for $600/cert/month. Sign up for your invite below:
http://aws.amazon.com/cloudfront/custom-ssl-domains/
Update: SNI customer provided certs are now available for no additional charge. Much cheaper than $600/mo, and with XP nearl...
Unicode equivalents for \w and \b in Java regular expressions?
...-\u11A2\uD7B0-\uD7C6]*|[\uAC01\uAC02\uAC03\uAC04])[\u11A8-\u11F9\uD7CB-\uD7FB]*))|[\u11A8-\u11F9\uD7CB-\uD7FB]+|[^[\p{Zl}\p{Zp}\p{Cc}\p{Cf}&&[^\u000D\u000A\u200C\u200D]]\u000D\u000A])[[\p{Mn}\p{Me}\u200C\u200D\u0488\u0489\u20DD\u20DE\u20DF\u20E0\u20E2\u20E3\u20E4\uA670\uA671\uA672\uFF9E\uFF9...
Optional Parameters in Go?
...uctor:
func NewFoobar(options ...func(*Foobar) error) (*Foobar, error){
fb := &Foobar{}
// ... (write initializations with default values)...
for _, op := range options{
err := op(fb)
if err != nil {
return nil, err
}
}
return fb, nil
}
where each option is a funct...
Difference between and
...B@cd5f8b
creating bean C: com.xxx.C@15ac3c9
creating bean A: com.yyy.A@ec4a87
setting A.bbb with com.xxx.B@cd5f8b
setting A.ccc with com.xxx.C@15ac3c9
And that's it! Now you don't have XML definitions anymore, you have annotations.
As a final example, keeping the annotated classes A, B and C and ...