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How to get last items of a list in Python?
...ence:
>>> list(range(100))[last_nine_slice]
[91, 92, 93, 94, 95, 96, 97, 98, 99]
islice
islice from the itertools module is another possibly performant way to get this. islice doesn't take negative arguments, so ideally your iterable has a __reversed__ special method - which list does h...
Retrieve specific commit from a remote Git repository
...e or checkout.
You can also specify only a SHA1 commit:
git fetch origin 96de5297df870:refs/remotes/origin/foo-commit
This will download only the commit of the specified SHA-1 96de5297df870 (and its ancestors that you miss), and store it as (non-existing) remote branch origin/foo-commit.
...
How do I install an R package from source?
...re in ‘/private/var/folders/Ey/EyzhYjoKESmsmsZ6K87PeU+++TI/-Tmp-/Rtmpe3C96p/downloaded_packages’ Updating HTML index of packages in '.Library' Warning message: In install.packages("RJSONIO", repos = "omegahat.org/R", : installation of package 'RJSONIO' had non-zero exit status
...
Detect application heap size in Android
...6870912
getMemoryClass: 192
Galaxy Nexus (4.3) normal
maxMemory: 100663296
getMemoryClass: 96
Galaxy Nexus (4.3) large heap
maxMemory: 268435456
getMemoryClass: 96
Galaxy S4 Play Store Edition (4.4.2) normal
maxMemory: 201326592
getMemoryClass: 192
Galaxy S4 Play Store Edition (4.4.2) larg...
Set transparent background of an imageview on Android
...ctor.
Some opacity code:
Hex Opacity Values
100% — FF
95% — F2
90% — E6
85% — D9
80% — CC
75% — BF
70% — B3
65% — A6
60% — 99
55% — 8C
50% — 80
45% — 73
40% — 66
35% — 59
30% — 4D
25% — 40
20% — 33
15% — 26
10% — 1A
5% — 0D
0% — 00
You can also set opacit...
Remove columns from dataframe where ALL values are NA
...tion(x)!all(is.na(x))))),with=F]
examples using large data (30 columns, 1e6 rows)
big_data <- replicate(10, data.frame(rep(NA, 1e6), sample(c(1:8,NA),1e6,T), sample(250,1e6,T)),simplify=F)
bd <- do.call(data.frame,big_data)
names(bd) <- paste0('X',seq_len(30))
DT <- as.data.table(bd)
...
gradle build fails on lint task
...e inspiration from
https://android.googlesource.com/platform/tools/base/+/e6a5b9c7c1bca4da402de442315b5ff1ada819c7
(implementation:
https://android.googlesource.com/platform/tools/base/+/e6a5b9c7c1bca4da402de442315b5ff1ada819c7/build-system/gradle/src/main/groovy/com/android/build/gradle/interna...
mfc里面的140种颜色宏 - C/C++ - 清泛网 - 专注C/C++及内核技术
...237) // 矢车菊蓝
#define CLR_LIGHTSTEELBLUE RGB(176, 196, 222) // 亮钢蓝
#define CLR_LIGHTSLATEGRAY RGB(119, 136, 153) // 亮石板灰
#define CLR_SLATEGRAY RGB(112, 128, 144) // 石板灰
#define CLR_DODGERBLUE RGB(...
Regular expression to match URLs in Java
...
96
The best way to do it now is:
android.util.Patterns.WEB_URL.matcher(linkUrl).matches();
EDIT...
Java equivalent to #region in C#
...
96
No equivalent in the language... Based on IDEs...
For example in netbeans:
NetBeans/Creator s...