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When to wrap quotes around a shell variable?
...
I will note that this is item #0 and a recurring theme on the mywiki.wooledge.org/BashPitfalls collection of common Bash mistakes. Many, many of the individual items on that list are basically about this issue.
– tripleee
...
How can javascript upload a blob?
...s also a Blob).
jQuery example:
var file = $('#fileInput').get(0).files.item(0); // instance of File
$.ajax({
type: 'POST',
url: 'upload.php',
data: file,
contentType: 'application/my-binary-type', // set accordingly
processData: false
});
Vanilla JavaScript example:
var file = $('#f...
How to compute the similarity between two text documents?
... in string.punctuation)
def stem_tokens(tokens):
return [stemmer.stem(item) for item in tokens]
'''remove punctuation, lowercase, stem'''
def normalize(text):
return stem_tokens(nltk.word_tokenize(text.lower().translate(remove_punctuation_map)))
vectorizer = TfidfVectorizer(tokenizer=norm...
MFC学习总结 (90个技巧) dlg 上建立View - C/C++ - 清泛网 - 专注C++内核技术
.../ ComboBox
{
//找到指定的工具项
while(m_wndToolBar.GetItemID(index)!=ID_TOOL_COMBO)
index++;
//设置指定工具项的宽度并获取新的区域 120是宽度
m_wndToolBar.SetButtonInfo(index, ID_TOOL_COMBO, TBBS_SEPARATOR, 120);
m_wndToolBar.GetItemRe...
How to create a UIView bounce animation?
...ior* gravityBehavior =
[[UIGravityBehavior alloc] initWithItems:@[self.redSquare]];
[self.animator addBehavior:gravityBehavior];
UICollisionBehavior* collisionBehavior =
[[UICollisionBehavior alloc] initWithItems:@[self.redSquare]];
collisionBehavior.translatesRef...
How do you add an in-app purchase to an iOS application?
...or product id put tld.websitename.appname.referencename this will work the best, so for example, you could use com.jojodmo.blix.removeads
Choose cleared for sale and then choose price tier as 1 (99¢). Tier 2 would be $1.99, and tier 3 would be $2.99. The full list is available if you click view pri...
How can I add a third button to an Android Alert Dialog?
...lertDialog.Builder(context);
builder.setTitle("Title");
builder.setItems(new CharSequence[]
{"button 1", "button 2", "button 3", "button 4"},
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
...
Why is there no Constant feature in Java?
... care than a mutable class.
This goes back to Josh Bloch's Effective Java Item 15 - Minimize Mutability. If you haven't read the book, pick up a copy and read it over a few times I guarantee it will up your figurative "java game".
In item 15 Bloch suggest that you should limit the mutability of cl...
What is the difference between “Rollback…” and “Back Out Submitted Changelist #####” in Perforce P4V
...ce changelists to a stack (from data structures).
Backing out removes one item from anywhere in the stack.
Rolling back removes n items from the top of the stack.
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Django dynamic model fields
...d field types.
This approach is good in a sense that it lets you have the best of both worlds: dynamic fields and relational database. However, hstore is not ideal performance-wise, especially if you are going to end up storing thousands of items in one field. It also only supports strings for val...