大约有 47,000 项符合查询结果（耗时：0.0249秒） [XML]
How do I iterate through the files in a directory in Java?
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209
You can use File#isDirectory() to test if the given file (path) is a directory. If this is tru...
How to extract a floating number from a string [duplicate]
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209
If your float is always expressed in decimal notation something like
>>> import re
&...
Different names of JSON property during serialization and deserialization
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209
Just tested and this works:
public class Coordinates {
byte red;
@JsonProperty("r")
...
How to check if variable is string with python 2 and 3 compatibility
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209
If you're writing 2.x-and-3.x-compatible code, you'll probably want to use six:
from six impo...
Fast check for NaN in NumPy
... us per loop
In [42]: %timeit np.isnan(np.sum(x))
10000 loops, best of 3: 95.9 us per loop
In [43]: x[50000] = np.nan
In [44]: %timeit np.isnan(np.min(x))
1000 loops, best of 3: 239 us per loop
In [45]: %timeit np.isnan(np.sum(x))
10000 loops, best of 3: 95.8 us per loop
In [46]: x[0] = np.nan
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What is P99 latency?
...from here
Request latency:
min: 0.1
max: 7.2
median: 0.2
p95: 0.5
p99: 1.3
So we can say, 99 percent of web requests, the latency found was 1.3ms (ms/microseconds depends on your system latency measures configured) or lower.
Like @tranmq told if we decrease the P99 latency of ...
IBOutlet and IBAction
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209
IBAction and IBOutlet are macros defined to denote variables and methods that can be referred ...
Checking if a blob exists in Azure Storage
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209
The new API has the .Exists() function call. Just make sure that you use the GetBlockBlobRefe...
Regular expression to match numbers with or without commas and decimals in text
...+286E000024.487900 -78.4500e.14500 .0140E789. ',
' 081,12.40E07,95.0120 0045,78,123.03500e-0.00 ',
' 0096,78,473.0380e-0. 0008,78,373.066000E0. 0004512300.E0000 ',
' ..18000 25..00 36...77 2..8 ',
' 3.8..9 .12500. 12.51.400 ',
' 00099,11...
How to test which port MySQL is running on and whether it can be connected to?
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209
To find a listener on a port, do this:
netstat -tln
You should see a line that looks like t...