大约有 40,000 项符合查询结果（耗时：0.0444秒） [XML]
How to query nested objects?
...ndividual fields in the subdocument:
Equality matches within subdocuments select documents if the subdocument matches exactly the specified subdocument, including the field order.
In the following example, the query matches all documents where the value of the field producer is a subdocument tha...
How to ignore certain files in Git
...n worked for @Kohan95! Though this question should be renamed based on the selected answer. My comments are just a warning to devs that may not be aware what the command does.
– OrwellHindenberg
Mar 24 '15 at 14:21
...
How to read lines of a file in Ruby
... to Linux standard "\n" before parsing the lines.
To support the "\r" EOL character along with the regular "\n", and "\r\n" from Windows, here's what I would do:
line_num=0
text=File.open('xxx.txt').read
text.gsub!(/\r\n?/, "\n")
text.each_line do |line|
print "#{line_num += 1} #{line}"
end
Of...
The provider is not compatible with the version of Oracle client
... or 64-bit Oracle Data Access Components (ODAC) Downloads) or you have to select according option in Oracle Universal Installer (OUI).
Note, when installing the Oracle Data Provider >= 12.1, then the provider is not automatically registered into GAC. You have to register it manually if needed,...
Automatically start a Windows Service on install
...d for cases where you need to be able to perform other processing (e.g. to select which service).
PowerShell: execute Start-Service via RunspaceInvoke or by creating your own Runspace and using its CreatePipeline method to execute. This is good for cases where you need to be able to perform other pr...
What is INSTALL_PARSE_FAILED_NO_CERTIFICATES error?
...
No need to check both, Select V1 if you are supporting OS 7.0 and below Check V2 if you are supporting the devices running on 7.0 and above.
–
Calculate distance between 2 GPS coordinates
...
This is very easy to do with geography type in SQL Server 2008.
SELECT geography::Point(lat1, lon1, 4326).STDistance(geography::Point(lat2, lon2, 4326))
-- computes distance in meters using eliptical model, accurate to the mm
4326 is SRID for WGS84 elipsoidal Earth model
...
Why does base64 encoding require padding if the input length is not divisible by 3?
... either have to decode 4 bytes at a time or split the string after padding characters. It seems like those implementations just ignore the padding chars, even when they are in the middle of a string.
– Roman
May 30 at 7:02
...
How to properly import a selfsigned certificate into Java keystore that is available to all Java app
...\cacerts to another folder.
In Portecle click File > Open Keystore File
Select the cacerts file
Enter this password: changeit
Click Tools > Import Trusted Certificate
Browse for the file mycertificate.pem
Click Import
Click OK for the warning about the trust path.
Click OK when it displays the...
What techniques can be used to speed up C++ compilation times?
...rated binary sizes.
Changing visibility options
In newer compilers you can select your symbols to be either visible or invisible in the Dynamic Shared Objects (DSOs). Ideally, changing the visibility can improve compiler performance, link time optimizations (LTOs), and generated binary sizes. If yo...