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Convert a JSON string to object in Java ME?
...json = (JSONObject)new JSONParser().parse("{\"name\":\"MyNode\", \"width\":200, \"height\":100}");
System.out.println("name=" + json.get("name"));
System.out.println("width=" + json.get("width"));
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How to drop rows of Pandas DataFrame whose value in a certain column is NaN
...s dropped. So if there was a null value in row-index 10 in a df of length 200. The dataframe after running the drop function has index values from 1 to 9 and then 11 to 200. Anyway to "re-index" it
– Aakash Gupta
Mar 4 '16 at 6:03
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JavaScript window resize event
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window.addEventListener('resize', debounce(() => console.log('hello'),
200, false), false);
It will never fire more than once every 200ms.
For mobile orientation changes use:
window.addEventListener('orientationchange', () => console.log('hello'), false);
Here's a small library I put to...
Understanding exactly when a data.table is a reference to (vs a copy of) another data.table
.....snip..
tracemem(newDT)
# [1] "<0x0000000003b7e2a0"
newDT$b[2] <- 200
# tracemem[0000000003B7E2A0 -> 00000000040ED948]:
# tracemem[00000000040ED948 -> 00000000040ED830]: .Call copy $<-.data.table $<-
.Internal(inspect(DT))
# @0000000003B7E2A0 19 VECSXP g0c7 [OBJ,NAM(2),TR,ATT...
Maximum filename length in NTFS (Windows XP and Windows Vista)?
... msdn.microsoft.com/en-us/library/… and blogs.msdn.com/b/bclteam/archive/2007/02/13/…
– Michael Olesen
Nov 3 '11 at 12:34
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Why is volatile not considered useful in multithreaded C or C++ programming?
...le unnecessary. We can just remove the volatile qualifier entirely.
Since C++11, atomic variables (std::atomic<T>) give us all of the relevant guarantees.
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Passing variable arguments to another function that accepts a variable argument list
...
Maybe throwin a rock in a pond here, but it seems to work pretty OK with C++11 variadic templates:
#include <stdio.h>
template<typename... Args> void test(const char * f, Args... args) {
printf(f, args...);
}
int main()
{
int a = 2;
test("%s\n", "test");
test("%s %d %d %p\n"...
家政O2O百家争鸣后的卡位战：烧钱补贴并非良药 - 资讯 - 清泛网移动版 - 专...
...烧钱家政O2O市场自前年开始爆发以来，创业者与风投资金不断进入，在今年更是掀起了惊涛骇浪，这一点我们从最近该行业的投融资情况可见一斑，仅在本月家政O2O平台就有“小马管家”宣布获得了5000万人民币的A+轮融、好慷在...
家政O2O百家争鸣后的卡位战：烧钱补贴并非良药 - 资讯 - 清泛网移动版 - 专...
...烧钱家政O2O市场自前年开始爆发以来，创业者与风投资金不断进入，在今年更是掀起了惊涛骇浪，这一点我们从最近该行业的投融资情况可见一斑，仅在本月家政O2O平台就有“小马管家”宣布获得了5000万人民币的A+轮融、好慷在...
家政O2O百家争鸣后的卡位战：烧钱补贴并非良药 - 资讯 - 清泛网移动版 - 专...
...烧钱家政O2O市场自前年开始爆发以来，创业者与风投资金不断进入，在今年更是掀起了惊涛骇浪，这一点我们从最近该行业的投融资情况可见一斑，仅在本月家政O2O平台就有“小马管家”宣布获得了5000万人民币的A+轮融、好慷在...