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Why exactly is eval evil?
...PPLY - call a function with a list as the arguments: (apply '+ '(1 2 3)).
Q: do I really need eval or does the compiler/evaluator already what I really want?
The main reasons to avoid EVAL for slightly more advanced users:
you want to make sure that your code is compiled, because the compiler can ...
Best way to store a key=>value array in JavaScript?
....
Well, now that we know javascript arrays are used typically for numeric indexing and objects more flexibly for associative indexing, we will use them together to create an array of objects that we can loop through, like so -
JSON array (array of objects) -
$(document).ready(function(){
var...
HTTP redirect: 301 (permanent) vs. 302 (temporary)
... searches for location header in response pick the new URL and replace the indexed URL with the new one and also transfer pagerank.
So search engine refreshes all indexed URL that no longer exist (301 found) with the new URL, this will retain your old webpage traffic, pagerank and divert it to the ...
The Guava library: What are its most useful and/or hidden features? [closed]
...s great for building Comparators that behave just how you want.
Maps.uniqueIndex and Multimaps.index: these methods take an Iterable and a Function and build an ImmutableMap or ImmutableListMultimap that indexes the values in the Iterable by the result of applying the function to each. So with a fu...
JSON formatter in C#?
...end(ch);
bool escaped = false;
var index = i;
while (index > 0 && str[--index] == '\\')
escaped = !escaped;
if (!escaped)
quoted = !quoted;
b...
HTML5 Canvas Resize (Downscale) Image High Quality?
... = Math.floor(sh * scale); // target image height
var sx = 0, sy = 0, sIndex = 0; // source x,y, index within source array
var tx = 0, ty = 0, yIndex = 0, tIndex = 0; // target x,y, x,y index within target array
var tX = 0, tY = 0; // rounded tx, ty
var w = 0, nw = 0, wx = 0, nwx = 0...
What is the difference between SqlCommand.CommandTimeout and SqlConnection.ConnectionTimeout?
Is there any difference between SqlCommand.CommandTimeout and SqlConnection.ConnectionTimeout in .NET?
6 Answers
...
git stash -> merge stashed change with current changes
...irst.
I just discovered that if your uncommitted changes are added to the index (i.e. "staged", using git add ...), then git stash apply (and, presumably, git stash pop) will actually do a proper merge. If there are no conflicts, you're golden. If not, resolve them as usual with git mergetool, or ...
How to read a file in reverse order?
... yield segment
segment = lines[0]
for index in range(len(lines) - 1, 0, -1):
if lines[index]:
yield lines[index]
# Don't yield None if the file was empty
if segment is not None:
yield segment
...
ORA-30926: unable to get a stable set of rows in the source tables
...ed if this has not recently been done. Rebuilding (or dropping/recreating) indexes may help too.
3.1) Is the SQL statement a MERGE?
evaluate the data returned by the USING clause to ensure that there are no duplicate values in the join. Modify the merge statement to include a deterministic where ...