大约有 23,000 项符合查询结果(耗时:0.0418秒) [XML]
Why do people say there is modulo bias when using a random number generator?
... klutt
19.6k1414 gold badges3737 silver badges6464 bronze badges
answered Jun 12 '12 at 0:10
Nick DandoulakisNick Dandoulakis
...
Detect Windows version in .net
...:
edition = "Enterprise Server for Itanium-based Systems";
break;
case PRODUCT_ENTERPRISE_SERVER_V:
edition = "Enterprise Server without Hyper-V";
...
Remove rows with all or some NAs (missing values) in data.frame
...ata.frame does not support cols=.
Benchmark result
Here is a comparison of base (blue), dplyr (pink), and data.table (yellow) methods for dropping either all or select missing observations, on notional dataset of 1 million observations of 20 numeric variables with independent 5% likelihood of being ...
How to check if any flags of a flag combination are set?
... {
CheckIsEnum<T>(true);
long lValue = Convert.ToInt64(value);
long lFlag = Convert.ToInt64(flag);
return (lValue & lFlag) != 0;
}
public static IEnumerable<T> GetFlags<T>(this T value) where T : struct
{
CheckIsEnum<T>...
How to hide columns in HTML table?
I have created a table in ASPX. I want to hide one of the columns based on the requirement but there is no attribute like visible in the HTML table building. How can I solve my problem?
...
Programmatically get the cache line size?
...
@android : I use fedora-18 x64 machine with core-i5 processor. cat /sys/devices/system/cpu/cpu0/cache/index0/coherency_line_size returns 64 in my system. Same for index1,2,3 folders also.
– Abid Rahman K
Aug 8 '13 ...
Pandas percentage of total with groupby
...e level='state' kwarg in div tells pandas to broadcast/join the dataframes base on the values in the state level of the index.
share
|
improve this answer
|
follow
...
Mercurial move changes to a new branch
...n is one solution for you problem. IMHO a simpler workflow is to use the rebase extension. Suppose you have a history like this:
@ changeset: 2:81b92083cb1d
| tag: tip
| summary: my new feature: edit file a
|
o changeset: 1:8bdc4508ac7b
| summary: my new feature: add file b...
hexadecimal string to byte array in python
... bits = ''
for i in range(len(s)):
bits += hex_table[int(s[i], base=16)]
return bits
share
|
improve this answer
|
follow
|
...
Fastest hash for non-cryptographic uses?
I'm essentially preparing phrases to be put into the database, they may be malformed so I want to store a short hash of them instead (I will be simply comparing if they exist or not, so hash is ideal).
...