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Using variables inside a bash heredoc
...ost.
local=$(uname)
ssh -t remote <<:
echo "$local is the value from the host which ran the ssh command"
# Prevent here doc from expanding locally; remote won't see backslash
remote=\$(uname)
# Same here
echo "\$remote is the value from the host we ssh:ed to"
:
...
How to get the first column of a pandas DataFrame as a Series?
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From v0.11+, ... use df.iloc.
In [7]: df.iloc[:,0]
Out[7]:
0 1
1 2
2 3
3 4
Name: x, dtype: int64
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Pandas read_csv low_memory and dtype options
...oken data that breaks when dtypes are defined
import pandas as pd
try:
from StringIO import StringIO
except ImportError:
from io import StringIO
csvdata = """user_id,username
1,Alice
3,Bob
foobar,Caesar"""
sio = StringIO(csvdata)
pd.read_csv(sio, dtype={"user_id": int, "username": "string"...
Passing HTML to template using Flask/Jinja2
...
You can also declare it HTML safe from the code:
from flask import Markup
value = Markup('<strong>The HTML String</strong>')
Then pass that value to the templates and they don't have to |safe it.
...
Best way to add page specific JavaScript in a Rails 3 app?
...f you want them precompiled. However, if you require every javascript file from application.js.coffee then all the javacsripts will be loaded every time you navigate to a different page, and the purpose of doing page-specific javascripts will be defeated.
Therefore, you need to create your own man...
How do I call ::std::make_shared on a class with only protected or private constructors?
...e (tested with g++ 4.9.0). Without real parameters it tries to construct A from {}, although I have no idea why, and fails. I think making the this_is_private constructor private and providing a static method to create it fixes it, as there should be no way to access this method from the outside unl...
Declare a block method parameter without using a typedef
...
Another example (this issue benefits from multiple):
@implementation CallbackAsyncClass {
void (^_loginCallback) (NSDictionary *response);
}
// …
- (void)loginWithCallback:(void (^) (NSDictionary *response))handler {
// Do something async / call URL
...
Why is it string.join(list) instead of list.join(string)?
...s difficult for new-comers.
seq.join(str) introduces unexpected dependency from sequences to str/unicode.
join() as a built-in function would support only specific data types. So using a built in namespace is not good. If join() supports many datatypes, creating optimized implementation would be dif...
class name and method name dropdown list is missing (visual studio setting)
...s...
Text Editor-->All Languages
Check "Navigation Bar."
(Picture is from VS2013)
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Inno Setup for Windows service?
...e switch --start to your c# application and start windows service directly from the program by using ServiceController class (msdn.microsoft.com/en-us/library/…).
– lubos hasko
Sep 20 '09 at 2:52
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