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How can I specify a branch/tag when adding a Git submodule?
...ule object into your Git repository.
git submodule add -b is not some magically way to keep everything up to date with a branch. It is simply adds information about a branch in the .gitmodules file and gives you the option to update the submodule object to the latest commit of a specified branch be...
Counting the Number of keywords in a dictionary in python
...
Calling len() directly on your dictionary works, and is faster than building an iterator, d.keys(), and calling len() on it, but the speed of either will negligible in comparison to whatever else your program is doing.
d = {...
.net localhost website consistently making get arterySignalR/poll?transport=longPolling&connectionTo
...iewed the default.aspx page with the Firefox browser. When I check the net calls it has made, I see it making constant calls to:
...
Difference between .keystore file and .jks file
...cific file format, but the API can also be used with other file types, typically PKCS#12. When you want to load a keystore, you must specify its keystore type. The conventional extensions would be:
.jks for type "JKS",
.p12 or .pfx for type "PKCS12" (the specification name is PKCS#12, but the # is...
Shallow copy of a Map in Java
...m the specified map to this map
(optional operation). The effect of this call is equivalent to that of
calling put(k, v) on this map once for each mapping from key k to
value v in the specified map.
Example:
// HashMap here, but it works for every implementation of the Map interface
Map<...
When to use an object instance variable versus passing an argument to the method
...ou can follow whenever creating your classes.
Instance variables are typically considered to be attributes of a class. Think of these as adjectives of the object that will be created from your class. If your instance data can be used to help describe the object, then it's probably safe to bet it's...
Ruby custom error classes: inheritance of the message attribute
...
Your idea is right, but the way you call it is wrong. It should be
raise MyCustomError.new(an_object, "A message")
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How to apply a CSS filter to a background image
...content.
You can also use backdrop-filter
There is a supported property called backdrop-filter, and it is currently
supported in Chrome 76, Edge, Safari, and iOS Safari (see caniuse.com for statistics).
From Mozilla devdocs:
The backdrop-filter property provides for effects like blurring or...
SQL Server 2008: How to query all databases sizes?
...
with fs
as
(
select database_id, type, size * 8.0 / 1024 size
from sys.master_files
)
select
name,
(select sum(size) from fs where type = 0 and fs.database_id = db.database_id) DataFileSizeMB,
(select sum(size) from fs where type = 1 and...
How to choose an AES encryption mode (CBC ECB CTR OCB CFB)?
...e ciphertext and only decrypt it if it has not been tampered with. This is called encrypt-then-mac and should be preferred to any other order. Except for very few use cases authenticity is as important as confidentiality (the latter of which is the aim of encryption). Authenticated encryption scheme...