大约有 3,000 项符合查询结果(耗时:0.0237秒) [XML]
How to use Comparator in Java to sort
...arable vs Comparator
Sorting an ArrayList of Contacts
Also, do not use raw types in new code. Raw types are unsafe, and it's provided only for compatibility.
That is, instead of this:
ArrayList peps = new ArrayList(); // BAD!!! No generic safety!
you should've used the typesafe generic decla...
Append value to empty vector in R?
...aster than appending for larger vectors.
set.seed(21)
values <- sample(letters, 1e4, TRUE)
vector <- character(0)
# slow
system.time( for (i in 1:length(values)) vector[i] <- values[i] )
# user system elapsed
# 0.340 0.000 0.343
vector <- character(length(values))
# fast(er)
s...
When to use %r instead of %s in Python? [duplicate]
...
Use the %r for debugging, since it displays the "raw" data of the variable,
but the others are used for displaying to users.
That's how %r formatting works; it prints it the way you wrote it (or close to it). It's the "raw" format for debugging. Here \n used to display to...
Can the Android layout folder contain subfolders?
...
Is it possible to do this with the drawable folders? I just tried with no luck, even taking into account the declaration ordering.
– trevor-e
Mar 31 '14 at 21:22
...
Difference between CLOCK_REALTIME and CLOCK_MONOTONIC?
...
Note that on newer kernels, CLOCK_MONOTONIC_RAW is available which is even better (no NTP adjustments).
– Joseph Garvin
Aug 20 '12 at 13:59
14
...
How to get the raw value an field?
How can i get the "real" value of an <input type="number"> field?
4 Answers
...
Combine two data frames by rows (rbind) when they have different sets of columns
... c(1:5), b = c(6:10))
df2 <- data.frame(a = c(11:15), b = c(16:20), c = LETTERS[1:5])
dplyr::bind_rows(df1, df2)
a b c
1 1 6 <NA>
2 2 7 <NA>
3 3 8 <NA>
4 4 9 <NA>
5 5 10 <NA>
6 11 16 A
7 12 17 B
8 13 18 C
9 14 19 D
10 15 20 E
...
Razor MVC Populating Javascript array with Model Array
...opGrpViewModel = {
availableComputeOfferings: ko.observableArray(@Html.Raw(JsonConvert.SerializeObject(ViewBag.ComputeOfferings))),
desktopGrpComputeOfferingSelected: ko.observable(),
};
ko.applyBindings(desktopGrpViewModel);
...
<select name="ComputeOffering" class="form-control valid...
Escape @ character in razor view engine
...
@Html.Raw("@") seems to me to be even more reliable than @@, since not in all cases @@ will escape.
Therefore:
<meta name="twitter:site" content="@twitterSite">
would be:
<meta name="twitter:site" content="@Html.Raw("...
How do you do a limit query in JPQL or HQL?
...ry, refer this.
@Query(value =
"SELECT * FROM user_metric UM WHERE UM.user_id = :userId AND UM.metric_id = :metricId LIMIT :limit", nativeQuery = true)
List<UserMetricValue> findTopNByUserIdAndMetricId(
@Param("userId") String userId, @Param("metricId") Long metricId,
@Param("limi...