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Getting the encoding of a Postgres database
...
A programmatic solution:
SELECT pg_encoding_to_char(encoding) FROM pg_database WHERE datname = 'yourdb';
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iOS开发调试技巧总结 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...ntroller.h"
#defineNSLog(format,...)do{\
fprintf(stderr,"%s\n",\
[[[NSStringstringWithUTF8String:__FILE__]lastPathComponent]UTF8String],\
__LINE__,__func__);\
(NSLog)((format),##__VA_ARGS__);\
fprintf(stderr,"-------\n");\
}while(0)
@interfaceViewController
@end
@implementationView...
Convert floats to ints in Pandas?
...ll edit all the floats, so it may be better to convert your FK column to a string, do the manipulation, and then save.
– Ryan G
Jan 22 '14 at 19:30
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Preferred way to create a Scala list
..., but if applying a fold in any given situation requires writing a cryptic string of punctuation symbols, I'd consider a different approach.
– Matt R
Aug 7 '09 at 9:12
11
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Installing python module within code
...(but with each option as a separate entry in the list, instead of a single string). And to specify which version of the package you want, do the same as on the command line.. ex: pip.main(['install', 'pip==7.1.0'])
– Kaos
Jul 20 '15 at 10:18
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How do I efficiently iterate over each entry in a Java Map?
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Map<String, String> map = ...
for (Map.Entry<String, String> entry : map.entrySet()) {
System.out.println(entry.getKey() + "/" + entry.getValue());
}
...
Use of 'prototype' vs. 'this' in JavaScript?
...ect-oriented language, i.e. most values are objects, including functions. (Strings, numbers, and booleans are not objects.)
So here are the snippets in question:
var A = function () {
this.x = function () {
//do something
};
};
In this case, variable A is assigned a value that i...
Can Selenium interact with an existing browser session?
...r : RemoteWebDriver
{
public static bool newSession;
public static string capPath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "TestFiles", "tmp", "sessionCap");
public static string sessiodIdPath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "TestFiles", "tmp", "session...
Using Python String Formatting with Lists
I construct a string s in Python 2.6.5 which will have a varying number of %s tokens, which match the number of entries in list x . I need to write out a formatted string. The following doesn't work, but indicates what I'm trying to do. In this example, there are three %s tokens and the list ...
Catch multiple exceptions at once?
...ompleteness, since .NET 4.0 the code can rewritten as:
Guid.TryParse(queryString["web"], out WebId);
TryParse never throws exceptions and returns false if format is wrong, setting WebId to Guid.Empty.
Since C# 7 you can avoid introducing a variable on a separate line:
Guid.TryParse(queryStrin...