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Fix warning “Capturing [an object] strongly in this block is likely to lead to a retain cycle” in AR
...ed code, how to fix a warning about a potential retain cycle, when using a block-based API?
7 Answers
...
Commands out of sync; you can't run this command now
I am trying to execute my PHP code, which calls two MySQL queries via mysqli, and get the error "Commands out of sync; you can't run this command now".
...
TextEnhancer拓展 - 增强App中的文本格式 - App Inventor 2 拓展 - 清泛IT社区，为创新赋能！
...t features to your app, making it more dynamic and engaging for your users.Blocks[size=15.008px]SetTextJustification:Set or unset text justification for the specified label. Justification values: true to justify, false for no justification.
blocks (26)[size=15.008px]800×162 15.8 KB
[size=15.0...
How can I get the sha1 hash of a string in node.js?
...hing the UTF-8 representation of the string. Other languages (like Python, PHP or PERL...) are hashing the byte string.
We can add binary argument to use the byte string.
const crypto = require("crypto");
function sha1(data) {
return crypto.createHash("sha1").update(data, "binary").digest("hex...
How to break out from a ruby block?
... want to continue to the next item, use break.
When next is used within a block, it causes the block to exit immediately, returning control to the iterator method, which may then begin a new iteration by invoking the block again:
f.each do |line| # Iterate over the lines in file f
n...
How to get past the login page with Wget?
...=foo&password=bar' \
--delete-after \
http://server.com/auth.php
# Now grab the page or pages we care about.
wget --load-cookies cookies.txt \
http://server.com/interesting/article.php
Make sure the --post-data parameter is properly percent-encoded (especially ampersands!) or t...
How to align an image dead center with bootstrap
...
Twitter Bootstrap v3.0.3 has a class: center-block
Center content blocks
Set an element to display: block and center via margin. Available as a mixin and class.
Just need to add a class .center-block in the img tag, looks like this
<div class="container">
<...
What is the scope of variables in JavaScript?
...everything
Function - visible within a function (and its sub-functions and blocks)
Block - visible within a block (and its sub-blocks)
Module - visible within a module
Outside of the special cases of global and module scope, variables are declared using var (function scope), let (block scope), and ...
Using OpenSSL what does “unable to write 'random state'” mean?
...
Yes, if you run from php web server, the user is www-data, and you should add "export" before every openssl: shell_exec('export RANDFILE=".rnd";openssl ecparam -genkey -name secp256k1'))
– diyism
Jun 21 '13...
How do I convert an object to an array?
...es with nested objects.
in your case you have to do something like;
<?php
print_r(get_object_vars($response->response->docs));
?>
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